Patent Publication Number: US-6705712-B2

Title: Ink cartridge, ink jet recording device using the same, and method for controlling the cleaning of a recording head of the ink jet recording device

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This is a continuation application of International Application No. PCT/JP01/00231 filed on Jan. 16, 2001. 
    
    
     TECHNICAL FIELD 
     The present invention relates to an ink jet recording device which includes a recording head being movable in the widthwise direction of a recording sheet of paper, and ejects from the recording head ink droplets toward a recording sheet in accordance with print data, thereby printing an image on the recording sheet. More specifically, the invention relates to an ink cartridge to which a cleaning process is effectively applicable for sucking ink from the nozzle apertures of the recording head to restore the printing function of the recording head, and an ink jet recording device using the ink cartridge, and a method for controlling the cleaning of the recording head of the ink jet recording device. 
     BACKGROUND ART 
     The ink jet recording device includes an ink jet recording head for receiving ink from an ink cartridge and a sheet feeder for moving a recording sheet relative to the recording head. The recording head mounted on a carriage ejects ink droplets onto the recording sheet while being moved in the widthwise direction of the recording sheet, thereby executing recording. 
     The recording head which is able to eject black ink and color ink of yellow, cyan and magenta is mounted on the carriage, so that not only text printing with black ink but also full color printing by varying a ejecting ratio of color ink can be executed. 
     The recording head mentioned above suffers from a problem in that print failure may occur due to increased ink viscosity or solidification of ink, which will be caused, for instance, due to evaporation of solvent from nozzle apertures, adhered dust, entry of air bubbles, etc. because the recording head is designed to eject ink, pressurized in a pressure generating chamber, as ink droplets from the nozzles toward a recording sheet. 
     To cope with this, the following function is incorporated. When the nozzle apertures are clogged or an ink cartridge is exchanged, a nozzle formed surface of the recording head is sealed with a capping system. In this state, a suction pump applies a negative pressure to the nozzle formed surface to suck ink from the nozzle apertures. In this way, the clogging in the nozzle apertures or the like due to ink solidification, and ink ejection failure due to the entry of air bubbles into the ink passage are eliminated. This operation is called a cleaning operation. 
     In performing the cleaning operation, it is effective to generate a fastest possible ink flow within an ink passage, for example, the ink passage ranging from the ink cartridge to the nozzle apertures of the recording head. This also makes it possible to discharge the air bubbles, present in the passage, together with the ink whose viscosity is increased. 
     In this approach, however, to increase a velocity of the ink in the cleaning operation, the performance of the suction pump must be increased to produce a large negative pressure. This requires the size increase of the pump and the motor for driving the pump, resulting in inevitable increase in cost and size of the entire device. 
     Further, since a large amount of ink is ejected from the recording head, the lifetime of the ink cartridge is reduced, and the user is compelled to accept an increase of running cost. 
     To cope with the problem, there is proposed a recording device in JP-A-4-1055, for example. In the proposal, a valve unit operable for opening and closing is located in an ink passage ranging from the ink cartridge to the recording head. In the cleaning operation, the valve unit is put in a closing state, and a negative pressure is applied to the capping system. When a negative pressure increases, the valve unit is opened so that a velocity of the ink flowing within the recording head is instantaneously increased. 
     In the proposal, there is no need of providing a suction pump specially designed to produce a large negative pressure. Therefore, it is estimated that the ink solidified or increased in its viscosity at positions near the nozzles of the recording head will readily be discharged. Further, the ink is instantaneously sucked from the nozzles. Therefore, it is estimated that the discharging of a relatively small amount of ink will provide a satisfactory cleaning operation. 
     Many ink jet recording devices as mentioned above are each constructed such that ink cartridges containing black and color ink are detachably attached to the carriage on which the recording head is mounted, from its top. Each ink cartridge is constructed to supply ink to the recording head via a hollow ink supplying needle (referred to frequently as a hollow needle) as an ink introducing portion which is mounted faceup on the carriage. 
     In the ink jet recording device, the ink passages within the recording head are very fine in structure. Accordingly, the ink to be supplied from the ink cartridge to the recording head must be in such a clean state that foreign matter, e.g., dust, is completely removed from the ink. 
     If such foreign material as dust is contained in the ink, the clogging problem will arise: the ink passage of the recording head, in particular an extremely thin ink supply port, the nozzle apertures, and the like are clogged with the foreign material. Where the clogging problem arises, the recording head cannot perform a proper ink ejecting operation. In most cases, it is impossible to restore the function of the recording head. 
     To solve the clogging problem, it is a common practice that a filter for filtering out foreign materials is located at a position upstream of the recording head in the ink passage, e.g., between the hollow needle and the head case for supporting the needle, thereby preventing foreign matters from flowing to the head side. 
     FIG. 1 shows a structure showing its state. In the figure, reference numeral  21  indicates a hollow needle, which is mounted on the ink cartridge. The hollow needle  21  leads the ink from the ink cartridge storing the ink therein to the recording head. The top end of the hollow needle  21  is sharpened, and its tip is opened to form ink introducing holes  21   a . The hollow needle  21 , which is closely joined to a packing member being made of rubber and mounted on the ink cartridge, introduces the ink from the ink cartridge via the ink introducing holes  21   a . The base end of the hollow needle  21  radially and downwardly expands, and hence a tapered space  21   b  is formed within the base end. 
     Another space  20   f  is formed also in a case  20   a  of the recording head on which the base of the hollow needle  21  is mounted. A filter member  22  is placed between the base of the hollow needle  21  and the head case  20   a  that enclose those spaces. An effective area of the filter member  22  is increased by forming the spaces above and below the filter member  22 , thereby suppressing a dynamic pressure (pressure loss) of the filter member. 
     As seen also from the structure shown in FIG. 1, in a state that the ink passage formed in the hollow needle  21  and the filter member  22  are arranged in the gravity direction, an air bubble A, as shown in FIG.  1 (A), is left within the tapered space  21   b  which is located within the hollow needle  21  and above the filter member  22 , when the ink passage within the recording head is first filled up with ink. Also when the ink cartridge is exchanged with another one, an air bubble A enters the space  21   b  above the filter member  22  and stays within the space  21   b.    
     In a case where the printing process is executed in a state that the air bubble A stays and a state of the printing is in a full duty (all the nozzle apertures simultaneously eject droplets at the highest frequency), the air bubble A staying upstream of the filter member  22  slowly moves to a position near the filter member  22 , together with the ink flow, and it is put in a state that it balances with the velocity of ink flow. 
     When the full duty printing further continues, the air bubble A comes in contact with the filter member, a slight part of the air bubble passes through the filter member  22  and reaches the ink passage within the recording head, and it stays in the ink passage within the recording head. When such a state is caused, a phenomenon, called a cushion operation, occurs in which the air bubble absorbs a pressure variation generated in the pressure chamber in accordance with print data. This results in that the recording head fails to eject ink droplets. 
     The cleaning operation to remove the air bubble as mentioned above is performed. As mentioned above, the negative pressure within the capping system increases, ink flows thereinto from the ink cartridge, and a velocity of the ink flow within the hollow needle  21  is not so high. With this, the air bubble A approximates to or comes in close contact with the filter member  22 . However, the air bubble fails to pass through the filter. 
     Accordingly, in a first mode of the invention, there are provided an ink cartridge which can close an upstream side of the recording head without elongating an ink passage between the recording head and the ink cartridge, in particular, a structure in which a closing system is provided on the ink cartridge, and an ink jet recording device to which the ink cartridge thus constructed is well adaptable. 
     In a second mode of the invention, a passage control system capable of closing the ink passage or increasing a flow resistance thereof is provided on an ink cartridge, which is located upstream of the filter member at which the air bubbles inevitably stay, whereby a negative pressure is effectively applied to the air bubbles staying on or above the filter member within the hollow needle, and the air bubbles can be allowed to pass through the filter member by instantaneously canceling this. The invention is purposed to provide a structure of an ink cartridge capable of increasing air bubble discharging effects using this, an ink jet recording device to which the ink cartridge can be adopted and a method for controlling the cleaning of a recording head of the recording device. 
     In a third mode of the invention, similarly, a passage control system capable of closing an ink flow passage is provided on an ink cartridge, and the passage control system is controlled to be open and closed by a pressing force of an ink introducing part of the recording device. The invention is purposed to provide a structure of an ink cartridge producing the effects similar to those mentioned above, an ink jet recording device to which the ink cartridge is well adaptable, and a method for controlling the cleaning of a recording head of the recording device. 
     DISCLOSURE OF THE INVENTION 
     In a first mode of the present invention, there is provided an ink cartridge which is detachably mounted to a recording device and supplies ink to a recording head through an ink introducing part provided on the recording device. In the ink cartridge, an ink supply passage, provided on the ink cartridge, for supplying ink to the recording device includes a region capable of closing an ink flow passage. 
     In this case, the ink cartridge preferably includes a container including an ink storage chamber for storing ink; an ink supply port for supplying ink from the ink storage chamber to the recording head when the ink supply port is coupled to an ink supplying needle communicating with the recording head. 
     The invention also provides an ink jet recording device to which the ink cartridge of the first mode is well adaptable. An ink supply passage for supplying ink to the recording device includes a region capable of closing an ink flow passage, is detachably mounted to that recording device. The recording device comprises: a member for pressing the region of the ink cartridge; a recording head for executing a printing operation when receiving ink from the ink cartridge; a capping system for sealing the recording head; and a negative pressure generating system for supplying a negative pressure to the capping system. 
     In this case, an ink supplying needle communicating with the recording head is further provided on the recording device, and the ink cartridge is mounted to the recording device in a state that the ink supply port is coupled to the ink supplying needle. 
     In the combination of the ink cartridge of the first mode and the ink jet recording device, the ink cartridge includes a region capable of closing the ink flow passage when receiving a pressure from exterior. When a negative pressure is applied to the ink cartridge in a state that the region is closed, a negative pressure is accumulated in the capping system. When the region is opened, a strong negative pressure instantaneously acts on the ink cartridge. As a result, a strong ink flow is caused in the recording head. And, the air bubbles staying there move and are discharged to the capping system on the ink flow caused by the continuously acting negative pressure from the negative pressure generating system. 
     According to another aspect, there is provided an ink cartridge of a second mode. The ink cartridge is detachably mounted to a recording device and supplies ink to a recording head through an ink introducing part provided on the recording device. In the ink cartridge, a passage control system is located in an ink flow passage formed from an ink storage chamber for storing ink to the ink supply port, and the passage control system closes the ink flow passage or increases flow resistance of the ink flow passage by receiving a drive force from an actuator. 
     In this case, a packing member is preferably disposed in the ink supply port formed in the ink cartridge to be coupled to the ink introducing part in a state that the ink cartridge is mounted to the recording device. 
     The passage control system forms a passage opening/closing system capable of opening and closing the ink flow passage by receiving a drive force from the actuator. 
     The passage control system forms a passage varying system capable of varying flow resistance of the ink flow passage by receiving a drive force from the actuator. 
     The passage control system includes a sealing member formed of an elastic material which is deformed by receiving a drive force of the actuator, and the ink flow passage is closed or its flow resistance is varied by deformation of the sealing member. 
     In this case, in a preferred embodiment, the actuator is disposed on the recording device, and the passage control system receives a drive force from the actuator in a state that the ink cartridge is mounted to the recording device. In another predetermined embodiment, the actuator is installed in the ink cartridge. 
     Any of the ink cartridges mentioned above may be an ink cartridge provided with a plurality of ink storage chambers independently storing ink of plural colors, the ink flow passages are formed respectively from the ink storage chambers to the ink supply ports, and the passage control system is individually located in each ink flow passage to close each ink flow passage or increase flow resistance thereof by receiving a drive force received from a respective actuator. 
     It is preferable that the passage control system opens the ink flow passage in a state that the passage control system does not receive a drive force from the actuator. The actuator preferably is constructed by an electromagnetic drive mechanism. The actuator may is constructed by a cam mechanism. 
     In the ink cartridge, it is preferable that an ink degassed to 5 ppm or lower is stored into the ink storage chamber. Further, when the ink cartridge is in a storage state, the ink cartridge is preferably packed in a reduced pressure state by a packing member having a gas barrier property. Furthermore, the ink cartridge is packed in a reduced pressure state by a packing member having a gas barrier property in a state that the passage control system is covered by a cover member. 
     In the ink cartridge of the second mode, the passage control system is located an ink flow passage formed from an ink storage chamber for storing ink to the ink supply port, and the passage control system closes the ink flow passage or increases passage resistance of the ink flow passage in response to a drive force received from an actuator. Accordingly, the actuator located on the recording device or the ink cartridge causes the passage control system located on the ink cartridge to opening/closing the ink flow passage or to vary passage resistance to the ink flow passage. 
     Thus, the passage control system is located on a position, which is located closer to the ink cartridge or upstream of the filter at which air bubbles stay. Accordingly, a negative pressure is effectively applied to the air bubbles staying on the filter within the hollow needle. As a result, an external pressure is exerted on the air bubbles stagnant within the hollow needle. Subsequently, the passage control system is operated, by the actuator, to instantaneously remove the negative pressure, whereby the air bubbles are efficiently discharged. 
     According to another aspect of the invention, there is provided an ink jet recording device to which any of the ink cartridge of the second mode is well adaptable. This recording device has an ink jet recording head for ejecting ink droplets from nozzle apertures in accordance with print data, a capping system for sealingly covering a nozzle forming surface of the recording head and sucking ink from the nozzle apertures by a negative pressure applied from a negative pressure generating system, and an ink introducing part coupled to an ink supply port of an ink cartridge to supply ink from the ink cartridge to the recording head. The ink jet recording device is characterized by a control system for applying a control signal to the actuator in a state that the nozzle forming surface of the recording head is sealed with the capping system, and a negative pressure generated by the negative pressure generating system is applied to and accumulated in the capping system, and a passage control system provided to the ink cartridge is opened or reduced in its flow resistance in accordance with the control signal applied from the control system to the actuator. 
     In the recording device, the ink cartridge is mounted on a carriage such that an ink flow direction of the ink flow passage formed in the ink cartridge is substantially orthogonal to a moving direction of the carriage. 
     In the ink jet recording device, an operation to cause the passage control system provided to the ink cartridge to be opened or to be reduced in its flow resistance in the state that the nozzle forming surface of the recording head is sealed with the capping system, and the negative pressure generated by the negative pressure generating system is applied to and accumulated in the capping system, is carried out at the time of initial filling operation in which the recording head is filled with ink. 
     Also in the ink jet recording device, an operation to cause the passage control system provided to the ink cartridge to be opened or to be reduced in its flow resistance in the state that the nozzle forming surface of the recording head is sealed with the capping system, and the negative pressure generated by the negative pressure generating system is applied to and accumulated in the capping system, is carried out when a restoring command given by a user is issued again within a predetermined amount of printing. 
     Also in the ink jet recording device, wherein a plurality of ink cartridges having ink storage chambers respectively containing ink of different colors are mounted, and control signals are individually applied to respective actuators for driving the respective passage control system provided on the ink cartridges. 
     Also in the ink jet recording device, a plurality of ink cartridges including at least an ink cartridge having ink storage chambers respectively containing ink of different colors are mounted, and control signals are individually applied to respective actuators for driving the respective passage control system provided on the ink cartridges. 
     In this case, the actuator is provided on the recording device, and the actuator is preferably constructed by an electromagnetic drive mechanism. The actuator may be constructed by a cam mechanism. 
     The ink jet recording device preferably includes an ink end detecting system for detecting an ink end of the ink cartridge mounted. In this case, at least in a state that the negative pressure is applied from the negative pressure generating system to the capping system, the passage control system located in an ink flow passage the ink end of which is detected is kept in a closing state. 
     In this case, software ink end detecting system for judging the ink end state by at least counting the number of ink droplets ejected from the recording head, or hardware ink end detecting system for judging the ink end by detecting a physical variation in the ink storage chamber sealingly storing ink may be utilized for the ink end detecting system. 
     During a printing operation, the passage control system located in the ink flow passage the ink end of which is detected is kept in the closing state, and other ink not in an ink end state is used. 
     In this case, of the other ink not in the ink end state, ink the remaining amount of which is the largest is used for with the exception of tallow ink to execute the printing operation. 
     Further, when the printing operation is executed using the other ink not in the ink end state, a utility of a print driver installed in a host computer notifies that the printing is to be performed using the other ink not in the ink end state. 
     When the printing operation is executed using the other ink not in the ink end state, a utility of a print driver installed in a host computer gives a notification to confirm whether or not the printing is to be performed using the other ink not in the ink end state. 
     In the recording device, the ink introducing part connected to the ink supply port of the ink cartridge is preferably a hollowed ink supplying needle with an ink introducing hole formed at a part of the ink supplying needle. 
     In a recording head cleaning control method in an ink jet recording device combined with the ink cartridge of the second mode, the recording device has an ink jet recording head for ejecting ink droplets from nozzle apertures in accordance with print data, a capping system for sealingly covering a nozzle forming surface of the recording head and sucking ink from the nozzle apertures by a negative pressure applied from a negative pressure generating system, and an ink introducing part mounted to an ink supply port of an ink cartridge to supply ink from the ink cartridge to the recording head. The cleaning control method comprises: a negative pressure accumulating step in which a negative pressure is applied from the negative pressure generating system to and accumulated in the capping system in a state that the nozzle forming surface of the recording head is sealed with the capping system, and the passage control system provided to the ink cartridge is closed or to be increased in flow resistance; and a negative pressure releasing step in which the passage control system provided to the ink cartridge is opened or decreased in flow resistance in a state that the negative pressure is accumulated in the capping system. 
     In this case, each of the negative pressure accumulating step and the negative pressure releasing step is executed by the respective passage control system, concurrently. 
     Each of the negative pressure accumulating step and the negative pressure releasing step may be executed by specific one of the passage control system. 
     In the cleaning control method, the negative pressure releasing step may be executed by specific one of the passage control system. 
     In this case, the negative pressure releasing step by the specific one the passage control system is executed, by a control program installed in the recording device, for an ink flow passage filled with ink whose color density is high. 
     Further, the negative pressure releasing step is executed depending on a left standing time after the printing operation of the recording device previously ends. 
     The negative pressure releasing step executed by the specific one of the passage control system is preferably executed based on designation information set on a utility of a print driver installed in a host computer or set on the recording device. 
     In the ink jet recording device employing the cleaning control method, the passage control system located in the ink flow passage of the ink cartridge is driven in synchronism with the cleaning operation for sucking ink droplets from the nozzle apertures by the capping system, thereby closing the ink flow passage or increasing its flow resistance. 
     In this state, the suction pump as the negative pressure generating system is driven, and a control sequence in which the passage control system of the ink cartridge is operated for valve opening in a state that the negative pressure is accumulated in the capping system. 
     Through the execution of the control sequence, in particular air bubble staying on the filter member within the ink supplying needle is expanded by the negative pressure. In this state, the negative pressure is instantaneously released at an upstream position of the ink supplying needle, the air bubbles on the filter member within the needle are effectively discharged to the capping system on a initial ink flow. 
     In this case, other air bubble than those staying within the ink supplying needle, e.g., air bubble stating at stagnant parts in the ink flow passage of the recording head is effectively discharged to the capping system. 
     Also in the ink cartridges or one ink cartridge, the passage control system installed to, for example, the color ink cartridges for storing different color inks may be controlled concurrently or individually. 
     Accordingly, when the cleaning control method for individually controlling the passage control system corresponding to the ink cartridges containing specific one of inks is employed, the cleaning operation is efficiently controlled corresponding to the specific ink. 
     As known, where an ink whose colorant concentration is high, e.g., black ink, is used, the restoring of the ink ejecting function by the cleaning operation is slow when comparing with other color inks. 
     Accordingly, where the operation sequence mentioned above is used, the nozzles ejecting the color inks first resumes their normal ejecting function frequently. In this case, only color inks are discharged in large amount into the capping system, and wasted, and a negative pressure fails to act on the nozzles ejecting the black ink. 
     For this reason, if only the passage control system corresponding to the black ink is operated for valve opening in the negative pressure removing step, the ink can be discharged from the nozzle apertures ejecting the black ink, and an efficient cleaning operation is performed while suppressing the waste of ink. 
     To achieve the above object, there is provided an ink cartridge of a third mode. The ink cartridge is detachably attached to a recording device and supplies ink to a recording head through an ink introducing part provided on the recording device, and comprises a passage control system located in an ink supply port formed in the ink cartridge, the passage control system being operated for valve opening by receiving a pressing force from ink introducing part of the recording device in a state that the ink cartridge is mounted to the recording device, whereby ink can be supplied from an ink storage chamber to the recording head, wherein the passage control system is operated for valve closing by receiving a further pressing force from the ink introducing part of the recording device, thereby stopping supply of ink from the ink storage chamber. 
     In this case, the passage control system is adapted to move within the ink supply port by being pressed by the ink introducing part of the recording device so that the passage control system disengages from a first packing member located in the ink supply port by receiving the pressing force from the ink introducing part of the recording device to be placed to a valve opening state, and engages with a second packing member located in the ink supply port by receiving the further pressing force from the ink introducing part of the recording device. 
     The passage control system is preferably urged by a spring member to engage with the first packing member. 
     In a preferred embodiment, the passage control system includes a disc like member, when a first surface of the disc like member engages the first packing member, the passage control system is placed to the valve closing state, when the disk like member is located at a mid position between the first and second packing members, the passage control system is placed to a valve opening state, and when a second surface of the disc like member engages the second packing member, the passage control system is placed to the valve closing state. 
     Preferably, the passage control system includes the disc like member and a shaft member for guiding movement of the disc like member, and the passage control system is disposed in the ink supply port so that the disc like member is moved in an axial direction of the shaft member. 
     Preferably, the first packing member is brought into engagement with the ink introducing part of the recording device, whereby the first packing member is kept in a liquid tight state with the ink supply port of the ink cartridge. 
     In this case, in a preferred embodiment, the first packing member includes a hollow member, the ink introducing part of the recording device includes a hollow ink supplying needle, and the ink supplying needle of the recording device engages with an inner circumferential surface of the hollow member. 
     In the thus constructed ink cartridge of the third mode, in a state that it is loaded to the recording device, it receives a pressing force from the ink introducing part of the recording device, the passage control system of the ink supply port is operated for valve opening. As a result, ink is supplied from the ink cartridge to the recording device. 
     When receiving a further pressing force from the ink introducing part of the recording device, the passage control system operates for valve closing. As will be described later, in cleaning the recording head, the negative pressure is effectively accumulated in the inner space of the capping system. 
     Additionally, the passage control system is located at an upstream position of the filter member at which the air bubbles necessarily stays. Accordingly, the negative pressure is effectively applied to the air bubbles stagnating on the filter member within the ink supplying needle. As a result, an external pressure may be applied to expand the air bubbles stagnating within the ink supplying needle. Subsequently, the passage control system is operated to instantaneously remove the negative pressure, so that the air bubbles are efficiently discharged. 
     When the above ink cartridge is not attached to the recording device, the ink cartridge, the ink supply port is placed to a valve closing state by the passage control system located in the ink supply port. Accordingly, even when it is detached from the recording device during its use, there is no chance that ink leaks from the ink cartridge or air enters the ink cartridge. Therefore, the ink cartridge may be attached to the recording device and used again. 
     According to the present invention, there is provided an ink jet recording device to which the ink cartridge of the third mode is adapted. The ink jet recording device has an ink jet recording head for ejecting ink droplets from nozzle apertures in accordance with print data, a capping system for sealingly covering a nozzle forming surface of the recording head and sucking ink from the nozzle apertures by a negative pressure applied from a negative pressure generating system, and an ink introducing part coupled to an ink supply port of an ink cartridge to supply ink from the ink cartridge to the recording head. The ink cartridge comprises an actuator for varying a position of the ink supply port of the ink cartridge attached to the recording device relative to the ink introducing part of the recording device to control an opening/closing valve of the passage control system of the ink cartridge, wherein a negative pressure is applied to the capping system sealing the nozzle forming surface of the recording head in a state that the passage control system is put in a valve closing state, and wherein the passage control system is operated for valve opening by driving the actuator in a state that the negative pressure is accumulated in the capping system. 
     In this case, the actuator includes an eccentric cam mechanism. Preferably, the actuator is located at the bottom of a cartridge holder to which the ink cartridge is detachably mounted, and an urging system is located in the cartridge holder for urging the mounted ink cartridge toward the actuator. 
     Preferably, the urging system for urging the ink cartridge toward the actuator includes a spring member located on a reverse side of a lid for closing an upper part opening of the ink cartridge. 
     Additionally, in the recording device, an operation in which the passage control system is operated for valve opening by driving the actuator in the state that the negative pressure is accumulated is performed during an initial ink filling operation in which the recording device is initially filled with ink. 
     In the ink jet recording device, an operation in which the passage control system is operated for valve opening by driving the actuator in a state that the negative pressure is accumulated may be performed when a restoring operation command issued by a user again within a predetermined printing quantity. 
     According to the invention, there is provided a recording head cleaning control method for an ink jet recording device, which is used in combination with the ink cartridge of the third mode. The recording device has an ink jet recording head for ejecting ink droplets from nozzle apertures in accordance with print data, a capping system for sealingly covering a nozzle forming surface of the recording head and sucking ink from the nozzle apertures by a negative pressure applied from a negative pressure generating system, and an ink introducing part coupled to an ink supply port of an ink cartridge to supply ink from the ink cartridge to the recording head. The cleaning control method comprises: a valve-closing control step of controlling the passage control system of the ink cartridge for valve closing by varying a position of the ink supply port of the ink cartridge mounted to the recording device relative to the ink introducing part of the recording device; a negative pressure accumulating step for applying a negative pressure from the negative pressure generating system to the inside of the capping system sealing the nozzle forming surface of the recording head, thereby accumulating the negative pressure therein; and a negative pressure releasing step of releasing the negative pressure in a manner that the passage control system of the ink cartridge is operated for valve opening by driving the actuator in a state that the negative pressure is accumulated in the capping system. 
     In this case, each of the negative pressure accumulating step and the negative pressure releasing step is executed concurrently for a plurality of the ink cartridges, concurrently. 
     Each of the negative pressure accumulating step and the negative pressure releasing step may be executed for a specific one of the specific ink cartridges. 
     Further, in the cleaning control method, the negative pressure releasing step may be executed for a specific one of the specific ink cartridges. 
     In this case, the negative pressure releasing step for the specific one of the ink cartridges is executed, by a program installed in the recording device, for an ink cartridge storing ink whose coloring density is high. 
     Further, in the cleaning control method, the negative pressure releasing step may be executed depending on a left standing time after printing operation of the recording device previously ends. 
     The negative pressure releasing step executed for the specific ink cartridge may be executed based on designation information set on a utility of a print driver installed in a host computer or set on the recording device. 
     In the ink jet recording device employing the cleaning control method, a position of the ink supply port of the ink cartridge loaded to the recording device relative to the ink introducing part of the recording device is varied in synchronism with a cleaning operation in which ink droplet from the nozzle apertures are sucked by the capping system, and the passage control system of the ink cartridge is operated for valve closing. 
     In this state, the suction pump as the negative pressure generating system is driven, so that a negative pressure is accumulated in the capping system which sealingly covers the nozzle forming surface of the recording head. 
     Then, the following sequence is executed. The actuator is driven again in a state that a negative pressure is stored in the capping system, to thereby vary a position of the ink supply port of the ink cartridge relative to the ink introducing part of the recording device. And the passage control system of the ink cartridge is operated for valve opening. 
     Through the execution of the control sequence, in particular air bubbles A 1  staying on the filter member within the ink supplying needle is expanded by the negative pressure. In this state, the negative pressure is instantaneously removed at an upstream position of the ink supplying needle, the air bubbles on the filter member within the needle are effectively discharged to the capping system  9  on a fast ink flow. 
     In this case, other air bubbles than those stagnating within the ink supplying needle, e.g., air bubbles stagnating at stagnant parts in the ink flow passage of the recording head is effectively discharged to the capping system. 
     In the construction where actuators being able to varying a position of the ink supply port of the ink cartridge relative to the ink introducing part of the recording device are set to the loading positions of the ink cartridges, and the passage control system of the ink cartridges are individually controlled, the negative pressure removing step may be executed for each ink cartridge. Where the construction is used, the cleaning operation may be efficiently executed corresponding to a specific ink. 
     As known, where an ink whose colorant concentration is high, e.g., black ink, is used, the restoring of the ink ejecting function by the cleaning operation is slow when comparing with other color inks. Accordingly, where the operation sequence mentioned above is used, the nozzles ejecting the color inks first resumes their normal ejecting function frequently. In this case, only color inks are discharged in large amount into the capping system, and wasted, and a negative pressure fails to act on the nozzles ejecting the black ink. For this reason, if only the passage control system corresponding to the black ink is operated for valve opening in the negative pressure removing step, the ink can be discharged from the nozzle apertures ejecting the black ink, and an efficient cleaning operation is performed while suppressing the waste of ink. 
     The present disclosure relates to the subject matter contained in Japanese patent application Nos. 2000-009205 (filed on Jan. 8, 2000), 2000-252474 (filed on Aug. 23, 2000) and 2000-260590 (filed on Aug. 30, 2000), which are expressly incorporated herein by reference in their entireties. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a cross sectional view showing a part of an ink cartridge mounting structure in an ink jet recording device. 
     FIG. 2 is a perspective view showing a basic construction of an ink jet recording device constructed according to the present invention. 
     FIG. 3 is a cross sectional view showing a cartridge holder to which an ink cartridge of a first mode of the invention is loaded. 
     FIG. 4 is a cross sectional view showing an ink cartridge of a first mode of the invention, which is to be loaded to the FIG. 3 cartridge holder. 
     FIG. 5 is a cross sectional view showing a state that the FIG. 4 cartridge is loaded to the cartridge holder and the supplying of ink to the recording head is allowed. 
     FIG. 6 is an enlarged, cross sectional view showing an ink supply port being closed and its vicinity. 
     FIG. 7 is a cross sectional view showing ink cartridges of a second mode of the invention and a part of a recording device to which the ink cartridges are loaded. 
     FIG. 8 is a sectional view showing a first embodiment of the ink cartridge of the second mode. 
     FIG. 9 is a sectional view showing a second embodiment of the ink cartridge of the second mode. 
     FIG. 10 is a sectional view showing a third embodiment of the ink cartridge of the second mode. 
     FIG. 11 is a cross sectional view showing a state that the passage control system of the FIG. 8 ink cartridge is covered with a cover member. 
     FIG. 12 is a cross sectional view showing the ink FIG. 11 cartridge being packed. 
     FIG. 13 is a cross sectional view showing the FIG. 8 ink cartridge inclusive of a part of the recording device, the view showing a state that a negative pressure is accumulated by operating the passage control system for valve closing. 
     FIG. 14 is a cross sectional view showing a state that the passage control system being in a state shown in FIG. 13 is operated for valve opening, and the ink is discharged. 
     FIG. 15 is a cross sectional view showing another state that the passage control system is operated for valve closing and a negative pressure is accumulated. 
     FIG. 16 is a cross sectional view showing a state that the passage control system being in a state shown in FIG. 15 is operated for valve opening, and the ink is discharged. 
     FIG. 17 is a block diagram showing a control circuit for executing the cleaning control mentioned above. 
     FIG. 18 is a flow chart showing a cleaning sequence executed by the FIG. 17 control circuit. 
     FIG. 19 is a graph showing how a negative pressure is applied in the cleaning sequence of FIG.  18 . 
     FIG. 20 is a flow chart showing a control sequence for a cleaning operation, which is executed when a manual cleaning command is issued again within a predetermined printing quantity. 
     FIG. 21 is a cross sectional view showing a structure including an ink cartridge of a third mode and a cartridge holder to which the ink cartridge is loaded. 
     FIG. 22 is an enlarged, cross sectional view showing a state that the FIG. 21 ink cartridge is loaded to the cartridge holder. 
     FIG. 23 is an enlarged, cross sectional view showing a state of a structure part in which the ink cartridge is loaded to the cartridge holder, and the supplying of ink to the recording head is allowed. 
     FIG. 24 is an enlarged, cross sectional view showing a state of a structure part in which the supplying of ink to the recording head is halted. 
    
    
     BEST MODES FOR CARRYING OUT THE INVENTION 
     FIG. 2 is a perspective view showing a basic construction of an ink jet recording device which utilizes an ink cartridge of each of first to third modes of the invention, which will be described hereunder. Reference numeral  1  designates a carriage. The carriage  1  is guided by a guide member  4  and is reciprocatively moved in an axial direction of a platen  5  via a timing belt  3  driven by a carriage motor  2 . 
     A recording head to be described later is mounted on a surface (lower surface) of the carriage  1 , which faces a recording sheet  6 , and a black ink cartridge  7  and a color ink cartridge  8 , which supply ink to the recording head, are detachably mounted on the upper side of the carriage. 
     Reference numeral  9  is a capping system disposed in a non-print region (home position). When the recording head moves to a position just above the capping system  9 , the capping system is raised to sealingly cover a nozzle forming surface of the recording head. A suction pump  10  serving as a negative pressure generating system for applying a negative pressure to the inner space of the capping system  9  is disposed under the capping system  9 . 
     The capping system  9  functions as a lid for preventing nozzle apertures of the recording head from drying during a rest time of the recording device, as an ink reception in a flushing mode in which a drive signal irrelevant to the printing is applied to the recording head so that the ink droplets are idly ejected, and as a cleaning system which applies a negative pressure of the suction pump  10  to the recording head to suckingly discharge ink from the nozzle apertures of the recording head. 
     A wiping member  11  formed with an elastic plate made of rubber or the like is disposed adjacent to the side of the capping system  9  which is closer to a print region, in a state that it is movable in a horizontal direction. The wiping member  11 , upon occasion, advances to the moving path of the recording head, and wipes the nozzle forming surface of the recording head after the suction pump  10  sucks the ink. 
     FIG. 3 shows a construction of a cartridge holder in the recording device using an ink cartridge which forms a first mode of the invention. The cartridge holder  13  is arranged within the carriage  1 . An ink supplying needle  21  as an ink introducing part which is to be inserted into an ink supply port of the ink cartridge of the first mode to be described later, is planted in the other end of an ink introducing passage  14  whose one end communicates with a recording head  20 . An operating rod  16  driven by a solenoid  15  is disposed at a position not facing the hollow needle  21 , while extending to a direction intersecting the axis of the hollow needle  21 . 
     FIG. 4 is a cross sectional view showing the ink cartridge as the first mode of the invention, which is mounted to the cartridge holder shown in FIG.  3 . The ink cartridge takes the form of the black ink cartridge  7 , by way of example. 
     An ink supply port  18 , which comes in engagement with the hollow needle  21 , is formed in the lower part of a container  20  forming an ink storing chamber in its interior. The ink supply port  18 , tubular in shape, is made of an elastic material, such as rubber, so that at least a region of the ink supply port facing the operating rod  16  is elastically deformable, and includes an ink flow passage  19 . The ink supply port  18  is fixed at one end to the container  20  so that one end of the ink flow passage  19  communicates with an ink discharging port  23 . A sealing film  24  which can be pierced by the hollow needle  21  to pass therethrough is stuck to the lower end of the ink supply port. In the embodiment, a recess  25  which serves as a guide for the operating rod  16  and defines a deformable region is formed at a region of the ink supply port which faces the operating rod  16 . 
     The container  20  contains a porous member  26  impregnated with ink, and an opening of the container is sealingly covered with a lid  29  having an ink injection port  27  and an air communicating port  28 . The porous member  26  is put in elastic contact with a protruded part  31 , protruded inward from the ink supply port, by means of the lib  30 , whereby a capillary force of a part of the porous material  26 , which is located in the vicinity of the ink supply port, is increased and the ink discharging to the ink supply port  18  is facilitated. 
     In the embodiment, when the cartridge  7  is loaded into the cartridge holder  8  shown in FIG. 3, the ink supply needle  21 , as shown in FIG. 5, penetrates through the sealing film  24  and hermetically engages with the ink supply port  18 , and the operating rod  16  faces the readily deformable region, i.e. the recess  25 , of the ink supply port  18 . 
     In this state, the carriage  1  is moved to a position of the capping system  9 , the nozzle forming surface of the recording head  20  is sealed with the capping system  9 , and the suction pump  10  is operated. Ink is pulled out of the ink cartridge under a negative pressure effected from the recording head  20  to flow into the recording head  20  via the ink supply port  18 . 
     Along the ink flow, air bubbles staying in the recording head  20  and other passages are discharged by the capping system  9 , so that the recording head  20  is ready for printing. 
     In a case where printing failure occurs during the printing operation, and it is necessary to restore the ink droplet ejecting function, the carriage  1  is moved to the position of the capping system  9  as in the previous case, and the recording head  20  is sealed with the capping system. 
     Then, a control system (not shown) outputs a signal to the solenoid  15  to energize the same, so that the operating rod  16 , as shown FIG. 6, protrudes to the ink supply port as shown by arrow B and elastically presses the ink supply port  18  to close the ink flow passage  19 . 
     In this state, the suction pump  10  is operated. In this case, since the upstream side, or the ink cartridge side, is closed, a negative pressure accumulatively increases in the capping system  9  and a strong negative pressure acts on the recording head  20 . After a predetermined time elapses, the solenoid  15  is deenergized, to retract the operating rod  16  to thereby open the ink flow passage  19 . 
     As a result, a strong negative pressure instantaneously acts on the ink cartridge, and a strong ink flow occurs in the recording head  20 . And, the air bubbles staying there begin to move and are discharged to the capping system  9  along with the ink flow caused by the continuously acting negative pressure from the suction pump. 
     In the embodiment, the ink flow passage between the ink supply needle  21  and the ink supply port of the ink cartridge is closed. Therefore, the ink consumption is reduced and a negative pressure is rapidly increased. 
     It is noted that the ink supply port forming a valve mechanism is included in the ink cartridge, i.e. a supply part. Accordingly, every time that the ink cartridge is exchanged with a new one, the ink supply port forming a valve mechanism is also exchanged with a new one, and hence a high reliability can be secured. 
     In the above-mentioned embodiment, the ink flow passage is closed by the solenoid. If required, a displacing member rotated by a motor may be used to close the ink flow passage. Also in the embodiment, the porous member impregnated with ink is contained in the container. If required, the container may be formed as a liquid chamber in which ink is directly contained in the container. 
     In the first mode of the present invention, the recess  25 , i.e. a closeable region, and a driving system for closing the closeable region have been described with reference to the black ink cartridge  7 . In case of the color ink cartridge  8  having a plurality of ink supply ports respectively communicating ink storage chambers, such a closeable region is provided to each of the ink supply ports, and also the driving systems are provided to be capable of selectively closing the respective closeable regions. In case where such black and color ink cartridges are mounted to the recording device, the driving systems may be operated to simultaneously close (or open) all of the closeable regions, or may be operated to independently close (or open) the closeable regions in an ink supply port by ink supply port basis, or in an ink cartridge by ink cartridge basis, as described latter. 
     As described above, in the ink cartridge of the first mode and the recording device, a region being able to close the ink flow passage by a pressure received from exterior is included in the ink supply port for supplying ink to the recording device. Accordingly, when the ink supply port is closed and the suction pump is driven, a negative pressure is accumulatively increased in the capping system. Subsequently, the ink supply port is opened, so that a strong ink flow is generated in the recording head and air bubbles staying there are readily removed. 
     Further, the ink supply port forming a valve mechanism is included in the ink cartridge i.e. a supply part. Accordingly, every time that the ink cartridge is exchanged with a new one, the ink supply port forming a valve mechanism is also exchanged with a new one, and hence a high reliability is secured when the cleaning operation in which the negative pressure is accumulated is reliably performed. 
     FIG. 7 is a cross sectional view showing ink cartridges of a second mode of the invention and a part of a recording device to which the ink cartridges are loaded. As shown FIG. 7, a nozzle plate  20   b  forming a nozzle forming surface of a recording head  20  is disposed on the lower surface of a head case  20   a  forming the recording head  20 . A plurality of nozzle apertures  20   c  are formed in the nozzle plate  20   b.    
     Pressure chambers are formed corresponding to the nozzle apertures  20   c , respectively. Actuators  20   d  constructed by piezoelectric vibrators, which are put on the pressure chambers, are disposed within the head case  20   a . Ink flow passages  20   e , which extend upward from the nozzle apertures  20   c  and the pressure chambers, are formed in the head case  20   a.    
     Four hollow ink supplying needles  21 , which form ink introducing parts, stand erect on the upper surface of the head case  20   a . The ink flow passages  20   e  formed in the head case  20   a  communicate with ink flow passages within the ink supplying needles  21 . Ink introducing holes  21   a  are formed at a part of each of the ink supplying needles  21 . Ink is introduced from the ink cartridges into the ink supplying needles  21  via the ink introducing holes  21   a , and then supplied to the pressure chambers of the recording head via the ink flow passages  20   e.    
     The ink supplying needle  21  located on the leftmost side in FIG. 7 is provided for receiving black ink, and a black ink cartridge  7  is mounted to the ink supplying needle  21 , from above. An ink storage chamber  7   a  occupies most of the upper part of the black ink cartridge  7 . A porous member (foam)  7   b  is contained in the ink storage chamber  7   a . The black ink is stored therein in a state that the porous member  7   b  is impregnated with the black ink. 
     An ink supplying port  7   c  is formed in the lower part of the ink storage chamber  7   a . An annular packing member  7   d  made of rubber is fitted to the interior of the ink supplying port  7   c . A film member  7   e  is sealingly stuck to the lower end of the ink supplying port  7   c  to prevent evaporation of ink solvent during the storage of the ink cartridge. 
     An ink flow passage  7   f  is formed in the ink cartridge of the second mode shown in FIG. 7, while horizontally extending from the ink storage chamber  7   a  to the ink supplying port  7   c , as will subsequently be described. A passage control system is located in the mid position of the ink flow passage  7   f . Accordingly, ink derived from the ink storage chamber  7   a  flows to the ink supplying port  7   c  via the ink flow passage  7   f.    
     When the black ink cartridge  7  is pressed to the ink supplying needle  21  while keeping its attitude shown in FIG. 7, the ink supplying needle  21  pierces through the film member  7   e  stuck to the ink supplying port  7   c . And, the packing member  7   d  disposed within the ink supplying port  7   c  is brought into contact with the circumference of the ink supplying needle  21 , and the black ink cartridge  7  is put in a loaded state. In this state, the black ink may be supplied to the recording head. 
     The color ink cartridge  8  includes ink storage chambers which individually contains respective color ink of cyan, magenta and yellow ordered from the left to the right as shown in FIG.  7 . Those storage chambers are integrally formed. Each of those storage chambers is similar in construction to the black ink cartridge  7 . Accordingly, the detail of the construction of the storage chamber is not discussed. The color ink cartridge  8  is loaded into the recording head in such a manner that it is pressed to the remaining three ink supplying needles  21  standing erect on the head case  20   a , while being in an attitude shown in FIG.  7 . After loaded, the color ink may be supplied to the recording head via the three ink supplying needles  21 . 
     FIG. 8 is a longitudinal sectional view showing a first embodiment of the ink cartridge of the second mode, the view taken on the substantially center line of the ink storage chamber of the ink cartridge. The black ink cartridge  7  is typically used for the ink cartridge shown in FIG.  8 . The same thing will be applied to the color ink cartridge. In the figures to be referred to, like or equivalent portions are designated by like reference numerals in the figure already referred to. 
     A cartridge filter  7   g  is disposed at the exit of the ink storage chamber  7   a . A valve seat  7   i  with an opening  7   h  is located just below this filter  7   g . A sealing member  7   j  forming a passage control system is loaded just below the opening  7   h  formed in the valve seat  7   i . The sealing member  7   j  is shaped like a disc and made of such elastic material as rubber. The sealing member  7   j  receives a drive force, which presses upward the lower side of the sealing member, and thus the substantially central part of the sealing member  7   j  is deformed to close the opening  7   h  of the valve seat  7   i.    
     In the illustrated embodiment, the sealing member  7   j  opens the ink flow passage when it does not receive a drive force by an actuator to be described later. The ink derived from the ink storage chamber  7   a  through the opening  7   h  of the valve seat  7   i  is introduced into the ink flow passage  7   f  horizontally formed near the bottom of the ink cartridge, and flows to the ink supplying port  7   c  via the ink flow passage  7   f.    
     FIG. 9 is a longitudinal sectional view showing a second embodiment of the ink cartridge of the second mode, the view taken on the substantially center line of the ink storage chamber of the ink cartridge. The ink cartridge  7  shown in FIG. 9 is provided with an actuator  32  for producing a drive force to press upward the lower side of the sealing member  7   j , which constitutes a passage control system. The actuator  32  of the embodiment includes an electromagnetic drive mechanism  33 . Specifically, current is fed to the electromagnetic drive mechanism  33  so that an operation piece  34  of the electromagnetic drive mechanism produces a dive force to press upward the sealing member  7   j.    
     As a result, the opening  7   h  of the valve seat  7   i  is closed with the sealing member, and hence the ink flow passage  7   f  is closed. When the current feeding to the electromagnetic drive mechanism  33  is stopped, the operation piece  34  of the electromagnetic drive mechanism  33  is returned to its original position by a spring (not shown), as shown in FIG.  9 . And, the opening  7   h  of the valve seat  7   i  is opened. In other words, in the embodiment shown in FIG. 9, a passage opening/closing system, i.e., an electromagnetic valve, is formed which is able to open and close the ink flow passage through the feeding and non-feeding of current to the actuator  32 . 
     FIG. 10 is a longitudinal sectional view showing a third embodiment of the ink cartridge of the second mode, the view taken on the substantially center line of the ink storage chamber of the ink cartridge. 
     The ink cartridge  7  shown in FIG. 10 employs a cam mechanism  35  having an eccentric cam as the actuator  32  for generating a drive force to press upward the sealing member  7   j  constituting a passage control system. Accordingly, when the cam mechanism  35  is rotated about a shaft  35   a  thereof, the operation piece  34  presses upward the sealing member  7   j.    
     As a result, the opening  7   h  of the valve seat  7   i  is closed, and hence the ink flow passage  7   f  is closed. When the cam mechanism  35  is further turned about the shaft  35   a  by 180° in the same direction or reversely turned, the operation piece  34  is returned to its original position by a spring (not shown) as shown in FIG. 10, and the opening  7   h  of the valve seat  7   i  is opened. 
     Accordingly, a distance between the sealing member  7   j  as the passage control system and the opening  7   h  formed in the valve seat  7   i  can be adjusted in accordance with an angular position of the cam mechanism  35 . This forms flow resistance varying system which varies a flow resistance of the ink flow passage. 
     The ink cartridge  7  of the second mode shown in any of FIGS. 8 to  10 , which has been described above, is provided with one ink storage chamber storing the black ink. Also in the color ink cartridge  8  provided with a plurality of ink storage chambers for individually storing different color ink, a passage control system is provided to each of the ink flow passages  7   f  ranging from the ink storage chambers to the ink supplying ports, to close the associated ink flow passage  7   f  or increases passage resistance of the associated ink flow passage  7   f  upon individually receiving a drive force from the associated actuator. 
     Each ink cartridge of the second mode of the invention thus far described employs a relatively complicated structure to guide ink from the ink storage chamber  7   a  to the ink supplying port  7   c , through the valve seat  7   i  forming the passage control system, the sealing member  7   j , and the ink flow passage  7   f  horizontally extending in the bottom part of the cartridge. Accordingly, air bubbles are likely to be left at stagnant places formed at some of the component parts of the ink cartridge. 
     To cope with this, it is desirable to use ink having a high degassed rate for the ink to be stored in the ink cartridge. In this connection, it was discovered that when ink degassed to 5 ppm or lower was sealingly stored in the ink cartridge, air bubbles generated at the stagnant places of the component parts of the ink cartridge were effectively dissolved into ink solvent. 
     When the ink cartridge is shipped from a factory, or when the ink cartridge is in a storage state, it is effective to pack the ink cartridge in a reduced pressure state by a packing member having a gas barrier property. 
     FIG. 12 is a diagram schematically showing a reduced pressure packed state using a packing member  39  having a gas barrier property. In FIG. 12, the packing member  39  is illustrated as the original condition. Accordingly, in the illustration, a sufficient gap is present between the ink cartridge  7  and the packing member  39 . However, in the reduced pressure packed state, the packing member  39  is pressed under the atmospheric pressure to be compressed, and brought into close contact with the surface of the ink cartridge  7 . 
     In the structure in which the sealing member  7   j  forming the passage control system is driven by the actuator provided on the recording device, as in the ink cartridge shown in FIG. 8, when the ink cartridge is packed in a reduced pressure state by the packing member  39 , the fragile sealing member  7   j  is put in a close contact state by the packing member  39 . Therefore, in handling the ink cartridge, an external force may apply to the sealing member  7   j  to damage the sealing member  7   j.    
     To avoid this, it is preferable that the sealing member  7   j  forming the passage control system is covered with a cover member as shown in FIG.  11  and in this state the ink cartridge is packed in a reduced pressure state as shown in FIG.  12 . Specifically, a cover member  37  with a rigidity is bonded over the surface of an adhesive tape  36 , as shown in FIG.  11 . The adhesive tape  36  is stuck to an outer surface of the ink cartridge in a state that the cover member  37  covers the exposed part of the sealing member  7   j.    
     A thick sheet  38  is stuck onto an end of the adhesive tape  36 , thereby preventing the end of the adhesive tape  36  from being stuck to the outer surface of the ink cartridge. 
     With this structure, when the user uses the ink cartridge, the user can grip the thick sheet  38  to easily peel off the cover member  37  and the adhesive tape  36  from the outer surface of the ink cartridge. Accordingly, the cartridge exchanging work is easy. 
     FIG. 13 shows a construction of the recording device combined with the ink cartridge of the first embodiment shown in FIG. 8 when the ink cartridge is utilized, and also shows a state that the cleaning operation is performed in the recording device. To utilize the FIG. 8 ink cartridge, the actuator  32  for driving the sealing member  7   j  of the ink cartridge is provided on the carriage of the recording device. The actuator  32  shown in FIG. 13 forms an electromagnetic valve by the utilization of an electromagnetic drive mechanism  33 , as in the case of FIG.  9 . If necessary, the cam mechanism  35  provided with the eccentric cam as shown in FIG. 10 may be used for the actuator  32  mounted on the carriage. 
     When the ink cartridge is mounted on the carriage of the recording device, an ink flow direction in the ink flow passage  7   f  of the ink cartridge is substantially orthogonal to a moving direction of the carriage. 
     When those directions are related so, the ink existing in the ink flow passage  7   f  of the ink cartridge receives a less inertia caused by the reciprocal motion of the carriage. 
     If the ink flow direction in the ink flow passage  7   f  of the ink cartridge is coincident with the carriage moving direction, a stability of the ink ejection from the recording head will be lowered by an inertia acting on the ink in the ink flow passage  7   f , caused by the carriage movement. 
     Reference numeral  9  in FIG. 13 designates the capping system already stated. The capping system  9  includes a cap case  9   a  whose upper surface is opened and substantially rectangular in shape, and a cap member  9   b  which is made of an elastic material, e.g., rubber, and contained in the cap case  9   a . The upper edge of the cap member  9   b  is protruded slightly above the cap case  9   a  to form a sealing surface for the nozzle plate  20   b.    
     An ink absorbing member  9   c  made of a porous material is place in the inner bottom of the cap member  9   b.    
     The cap case  9   a  is held on a slider  9   d . The slider  9   d  is lifted in conjunction with the movement of the carriage  1  to the home position. With this, as shown in FIGS. 13 and 14, the nozzle plate  20   b  forming the nozzle forming surface of the recording head is sealed with the cap member  9   b.    
     When the carriage moves from the home position to the print region, the capping system  9  removes the sealing of the recording head and descends, contrary to the above case, by the action of an unillustrated spring. 
     A suction port is formed in the inner bottom of the capping system to pass through the cap case  9   a . One end of a tube  10   a  forming the suction pump  10  serving as a negative pressure generating system is connected to the suction port. 
     When current is fed to the electromagnetic drive mechanism  33  forming the actuator  32 , the operation piece  34  is pushed up, and the sealing member  7   j  of the ink cartridge closes the opening  7   h  formed in the valve seat. 
     When the suction pump  10  is driven in this state, a negative pressure is accumulated in the inner space of the capping system  9 . The negative pressure reaches the sealing member  7   j  of the ink cartridge, and this passage is put in a negative pressure state. When the negative pressure is satisfactorily accumulated, an air bubble A 1  staying in the ink supplying needle  21  is expanded by the negative pressure as shown in FIG.  13 . 
     In this state, the current feeding to the electromagnetic drive mechanism  33  forming the actuator  32  is interrupted, and then, as shown in FIG. 14, the sealing member  7   j  of the ink cartridge opens the opening  7   h  of the valve seat. consequently, a fast ink flow occurs instantaneously. Accordingly, the air bubble A 1  in the ink supplying needle  21 , as shown in FIG. 14, passes through the filter member  22 , and is discharged to the capping system  9  in the form of fine bubbles. 
     FIGS. 15 and 16 show a state that air bubbles, which stay at a stagnant part in the ink flow passage formed in the recording head  20  are also discharged by the cleaning operation. In those figures, like or equivalent portions are designated by like reference numerals in FIGS. 13 and 14. 
     In the head case of the recording head  20 , as stated with reference to FIG. 7, ink of respective colors is led to the pressure chambers associated with the actuators  20   d  constructed by piezoelectric vibrators, via ink flow passages  20   e . With those component parts arranged, the ink flow is considerably complicated, inevitably causing stagnant parts at various locations. FIG. 15 schematically show an air bubble A 2  staying at a stagnant part. 
     When a negative pressure, as shown in FIG. 15, is applied to the air bubble A 2  staying at the stagnant part, the air bubbles A 2  is expanded, so that the bubble easily moves from the stagnant part. As shown in FIG. 16, when the valve closing state by the sealing member  7   j  of the ink cartridge is released, the air bubble A 2  can be discharged to the capping system  9  by an instantaneous fast ink flow. 
     FIG. 17 is a block diagram showing an example of a control circuit for executing the cleaning control mentioned above. In FIG. 17, like or equivalent portions are designated by like reference numerals. One end of the tube  10   a  forming the tube pump  10  as a negative pressure generating system, as shown in FIG. 17, is connected to the capping system  9 . The other end of the tube is connected to a waste liquid tank  12 . The waste ink that is discharged into the inner space of the capping system  9  through the cleaning operation is discharged into the waste liquid tank  12  through the tube pump  10 . 
     In FIG. 17, reference numeral  40  designates a host computer. A print driver  41  is installed in the host computer  40 . Through a utility of the print driver  41 , known selection and entering operations, such as selection of paper size, monochromatic or color print, and recording mode, and entering of data, e.g., font, and print command are performed by the utilization of an input unit  42  and a display unit  43 . 
     Also in the embodiment, the input unit  42  and the display unit  43 , as will be described later, are utilized to designate operation timing at which actuators  32  each for driving the sealing member  7   j  contained in the ink cartridge are activated. 
     In response to a print command entered on the input unit  42 , the print driver  41  sends print data to a print control system  44  contained in the recording device. The print control system  44  generates bit map data based on the print data transferred from the host computer  40 , and causes a head drive system  45  to generate drive signals in accordance with the bit map data, thereby ejecting ink from the recording head  20 . 
     The head drive system  45  receives a flushing command signal from a flushing control system  46 , other hand the drive signal based on the print data, and outputs a drive signal for the flushing operation to the recording head  20 . 
     Reference numeral  47  designates a cleaning control system. In response to a command from the cleaning control system  47 , a pump drive system  48  operates to drive and control the suction pump  10 . The cleaning control system  47  receives a cleaning command signal from the print control system  44 , a cleaning sequence control system  49  and a cleaning command detect system  50 . 
     An operation switch  51  is connected to the cleaning command detect system  50 . When the user operates or pushes the operation switch  51 , the cleaning control system  47  operates through the cleaning command detect system  50 . In this way, the cleaning operation is manually executed. 
     The cleaning control system  47  is also operated through the print control system  44  by operating the input unit  42  of the host computer  40 , and the cleaning operation is executed. 
     The cleaning sequence control system  49  receives commands from the host computer  40  and the cleaning command detect system  50 , and sends control signals to an actuator drive system a 52  and a carriage drive system  53 . 
     The actuator drive system  52  sends a control signal to the actuator  32  for driving the sealing member  7   j  in the ink cartridge  7 , whereby the ink flow passage  7   f  of the ink cartridge  7  is closed or its flow resistance is increased, or the reverse operation is performed. 
     The carriage drive system  53  receives a command from the cleaning sequence control system  49 , and drives the carriage motor  2  to move the recording head  20  to a position just above the capping system  9  where the nozzle forming surface of the recording head is sealingly covered with the capping system  9 . 
     FIG. 18 is a flow chart showing a cleaning operation of the recording head, which is performed in the recording device constructed as described above. A sequence of the cleaning operation steps will be described with reference to FIG.  18  and also the block diagram shown in FIG.  17 . When a cleaning command is issued by operating the operation switch  51  arranged on the recording device or by the operation of the input unit  42  of the host computer  40 , the cleaning sequence control system  49  receives the command and produces control signals. In this way, the cleaning operation starts. 
     And, the cleaning sequence control system  49  sends a command signal to the carriage drive system  53 . In response to the command signal, the carriage motor  2  is driven to move the carriage  1  above the wiping member which has advanced to the moving path of the carriage. Consequently, the nozzle forming surface of the recording head  20  is wiped out with the wiping member  11  (step S 11 ). 
     Subsequently, the carriage  1  is moved to the home position (step S 12 ), and the nozzle forming surface of the recording head  20  is capped with the capping system  9  (step S 13 ). 
     At the same time, the passage control system operates for the valve closing (step S 14 ). Specifically, the cleaning sequence control system  49  sends a command signal to the actuator drive system  52 , so that the actuator  32  is driven to cause the sealing member  7   j  forming the passage control system in the ink cartridge  7  to close the ink flow passage  7   f.    
     Subsequently, the driving of the suction pump  10  starts (step S 15 ). In this case, the cleaning sequence control system  49  shown in FIG. 17 sends a control signal to the cleaning control system  47 , and in turn the cleaning control system  47  sends a command signal to the pump drive system  48 . As a result, the suction pump  10  is driven, and a negative pressure is applied to the inner space of the capping system  10 , and the negative pressure gradually increases. 
     In this state, it waits till a predetermined time (1) elapses from the start of the suction pump  10  driving (step S 16 ). When the negative pressure applied to the capping system  9  reaches to a peak level or its near value, the passage control system operates for the valve opening, viz., the sealing member  7   j  of the black ink cartridge  7  operates for the valve opening (step S 17 ). In this case, the sequence control system  49  manages the predetermined time (1), while at the same time, it sends a control signal to the actuator  32 , to execute the valve-opening operation of the sealing member  7   i  in the black ink cartridge  7 . 
     Following the valve opening operation of the sealing member  7   j , it waits till a predetermined time (2) elapses after the sealing member  7   j  operated for valve opening (step S 18 ). When it judges that the predetermined time (2) has elapsed in the step s 18 , the driving of the suction pump  10  is halted (step S 19 ). 
     In this case, the cleaning sequence control system  49  manages the predetermined time (2), while at the same time halts the driving operation of the suction pump  10  by sending a control signal to the cleaning control system  47 . 
     A variation of a negative pressure, which is applied to the capping system  9  through the control sequence from the steps S 15  to S 19 , is plotted in FIG.  19 . As seen from FIG. 19, when the driving of the suction pump  10  starts, a negative pressure in the inner space of the capping system  9  sharply rises. 
     When the predetermined time (1) elapses and the negative pressure reaches a peak level or its near position, the sealing member  7   j  in the cartridge  7  is operated for valve opening. As a result, the negative pressure abruptly drops and approaches to atmospheric pressure. In this state, the driving of the suction pump  10  continues. Accordingly, the negative pressure does not drop to atmospheric pressure and settles down at a predetermined negative pressure level. 
     When the predetermined time (2) elapses after the sealing member  7   j  of the ink cartridge  7  is put to a valve opening state, the driving of the suction pump is halted, and the negative pressure drops to atmospheric pressure. 
     As seen from the negative pressure characteristic shown in FIG. 19, at a time point where the predetermined time (1) terminates, the sealing member  7   j  is put to the valve opening mode. As a result, a fast ink flow occurs in the ink flow passage ranging from the ink cartridge to the nozzle apertures of the recording head  7 . The fast ink flow expands air bubbles staying within or adhering to the ink flow passage, or separates them from the ink flow passage. 
     Also during the predetermined time (2), the driving of the suction pump  10  continues and the ink suction continues. Accordingly, the separated air bubbles are discharged along with the ink flow. 
     Returning to FIG. 18, a step S 20  is executed to release the capping of the recording head  20  with the capping system  9 . In a step S 21 , the suction pump  10  is temporarily driven and then halted. As a result, the waste ink having been discharged into the capping system  9  is wasted into the waste liquid tank  12  by the suction pump  10 . 
     In the next step S 22 , it judges whether or not the number of ink sucking operations reaches a predetermined number. If it does not reach the predetermined member, the control sequence from the steps S 13  to S 21  is repeatedly executed. If it is judged in step S 22  that the number of ink sacking operations reaches the predetermined number, a step S 23  is executed, viz., the wiping operation is performed, so that ink left on the nozzle forming surface of the recording head is wiped out by the wiping member  11 . 
     In a step S 24 , the recording head  20  is sealingly capped with the capping system  9 , and waits for the arrival of incoming print data. The step S 22  checks if the number of ink sucking operations reaches the predetermined number. However, where one sucking operation provides a satisfactory restoring effect, the judging step S 22  is not required. 
     The cleaning operation thus far described is a manual cleaning operation which is performed by operating the operation switch  51  on the recording device or the input unit  42  of the host computer  40 . It is preferable to program such that the cleaning operation mentioned above is automatically executed during an initial ink filling operation in which ink is initially filled into the recording device. 
     In the initial ink filling operation in which ink is initially filled into the recording device, much air bubbles are like to stay within the ink supplying needles and the ink flow passages of the recording head, as described above. 
     Accordingly, in a case where the ink flow passages of the recording head are first filled with ink, it is preferable to use ink high in degassed rate. There is a limit in increasing the degassed rate. Further, during the initial filling operation, the ink is fed to the ink flow passages while being replaced with an air layer. Accordingly, the degassed rate rapidly decreases. 
     For this reason, it is very important to reliably remove air bubbles at the time of the initial ink filling. The removal of air bubbles will ensure a stable printing operation. 
     It is preferable to program so that when the user enters a manual cleaning command again within a range of a predetermined printing quantity, the cleaning operation mentioned above is executed. 
     The case where the manual cleaning operation is performed again within the predetermined printing quantity frequently occurs when the user recognizes a print failure and the cleaning operation is executed again. In such a case, there is a possibility that relatively large air bubbles flow into the ink flow passage of the recording head to hinder the filling of ink. 
     FIG. 20 shows an example of a control sequence of a cleaning operation performed when a manual cleaning operation command is issued within a predetermined printing quantity as mentioned above. 
     The control sequence of FIG. 20 is featured by a CL 2  counter (KK), which judges which of the cleaning modes is to be selected, in a step S 36 , in accordance with a printing quantity after the previous cleaning operation is executed, and manages it. In the embodiment, any of three cleaning modes is selected in the control. 
     In the control, a value of the CL 2  counter (KK) is replaced, and a parameter for a respective cleaning mode is set, whereby the cleaning mode specified is performed in a step S 41 . 
     The operation sequence of FIG. 20 starts in response to a manual cleaning operation command issued when the operation switch  51  of the recording device or the input unit  42  of the host computer  40  is operated. 
     In a step S 31 , a print history stored in the print control system  44  is referred to, and the control judges whether or not the printing of one pass or larger has been performed since the power source for the recording device is turned on. If the printing of one pass or larger is not yet performed (the answer is NO), a step S 35  is executed and a parameter for a CL 1  cleaning mode is set. 
     This CL 1  mode indicates a type of cleaning operation mode. The CL 1  cleaning mode is a cleaning mode in which the least amount of the ink is sucked. CL 2  and CL 3  cleaning modes to be described later are cleaning modes in which the amounts of ink sucked are increased in this order. In this case, in place of varying the amount of the ink sucked, an ink suction velocity may be varied. 
     The ink suction amount is varied to avoid such a situation that even in a slight printing failure, a large amount of ink is consumed. By so doing, undue waste of ink is avoided. 
     Then, a step S 41  is executed to perform a cleaning operation. Specifically, when the recording device receives a cleaning operation command immediately after the power source of the recording device is turned on, the CL 1  cleaning mode sucking the least amount of ink is executed. 
     When the control judges that the printing of at least one pass has been performed (the answer is YES), the control advances to a step S 32 . In this step, the control judges if the printing of one pass or more has been performed since the previous cleaning operation was performed. If the printing of one pass or more is not carried out (the answer is NO), the control advances to the step S 35  as in the previous case. And, the cleaning operation of the CL 1  cleaning mode is performed. 
     When the printing of one pass or more has been performed after the previous cleaning operation (the answer is YES), a step S 33  is executed to check if the printing quantity counted from the previous cleaning operation is 5 pages or smaller. 
     When the printing of 5 pages or more has not been performed after the previous cleaning operation (the answer is NO), the control advances to a step S 34  and sets “1” for a count value KK of a CL 2  counter, and goes to the step S 35 . Here, “KK” of the CL 2  counter is a counter value used for specifying selection order of the cleaning modes in the following way in the cleaning selection operation. 
     That is, KK=1 is re-defined, and then, a CL 1  mode is set up to execute a first cleaning mode (CL 1 ). For the subsequent cleaning operation, since KK=1 has been defined, KK=2 is re-defined, and then a CL 2  mode is set up to execute a second cleaning mode (CL 2 ). 
     For the next cleaning operation, since KK=2 has been defined, KK=0 is re-defined and then a CL 3  mode is set up to execute a third cleaning operation (CL 3 ). In this way, a sequence of cleaning modes CL 1 →CL 2 →CL 3  is repeated. As the cleaning mode progresses from CL 1  to CL 3 , the amount of ink sucked increases. In the CL 3  cleaning mode, the strongest cleaning is carried out. 
     The fact that the cleaning operation is successively performed implies that the recording device is hard to resume its normal printing state. In this case, it is necessary to shift the cleaning operation to a stronger cleaning operation. It is for this reason that the above-mentioned control is used. 
     When in the step S 33 , the control judges that the printing quantity is not 5 pages or smaller after the previous cleaning operation is performed (the answer is NO), and when the user enters a cleaning command again, the control judges that the printing state of the recording device was successfully restored, but another trouble occurs to require another cleaning operation, and the KK of the CL 2  counter is set to “1”; KK=1. As a result, the CL 1  cleaning mode is set up. 
     When in the step S 33 , the control judges that the printing quantity is 5 pages or smaller after the previous cleaning operation is performed (the answer is YES), the step S 36  is executed to verify a count value of the CL 2  counter. 
     When KK=3, the control goes to the step S 34 . When KK=1, the control goes to a step S 37 . In this step, the CL 2  counter is set to “2” (KK=2), and in the next step S 38 , a parameter of the CL 2  cleaning mode is set. 
     Accordingly, the cleaning operation by a step S 41  following the step S 38  is the second cleaning mode (CL2) that was set up in the previous step S 38 . When KK=2 in the step s 36 , the control proceeds to a step S 39 . In this step, the CL 2  counter is set to “3” (KK=3). In the subsequent step S 40 , a parameter of the CL 3  cleaning mode is set. 
     Accordingly, the cleaning operation performed in a step S 41  following the step S 40  is a third cleaning mode (CL 3 ) that was set up in the step S 40 . 
     As described above, in the operation sequence shown in FIG. 20, when a manual cleaning command is issued, the cleaning operation is selected in accordance with the printing quantity produced after the previous cleaning operation. Accordingly, the cleaning operation is optimumly selected in accordance with the current printing condition. This accrues to reduction of a waste of ink. 
     The cleaning operations mentioned above have been discussed on condition that the sealing member as the passage control system in the black ink cartridge, and the three sealing members also as the passage control system in the color ink cartridge are concurrently opened and closed. 
     In other words, the cleaning operations have been discussed on condition that a negative pressure accumulating step in which the nozzle forming surface of the recording head is sealed with the capping system, the sealing members of the ink cartridges are each put to a valve closing state and in this state, a negative pressure is applied from the suction pump to be accumulated in the capping system, and a negative pressure releasing step in which the sealing members of the ink cartridges are each placed to a valve opening state in a state that the negative pressure is accumulated in the capping system, are each executed concurrently. 
     Ink high in coloring density, e.g., black ink, has a problem in which restoring ability by the cleaning operation is low in comparison to ink of other colors. Accordingly, where the operation sequence mentioned above is used, the nozzles ejecting color ink first resume their normal ejecting function, and thus the color ink is further discharged into the capping system, whereas a negative pressure is hard to act on the nozzles ejecting black ink. 
     To cope with the problem, it is desirable to independently control the sealing members as the passage control system by the actuators  32 . 
     In this case, the negative pressure accumulating step and the negative pressure releasing step are capable of driving only the sealing member of a specific ink passage. Such a control is also possible that the negative pressure accumulating step is executed concurrently, and only the negative pressure releasing step is executed for specific ink passage. With the control, the negative pressure is applied to only the ink cartridge storing a specific ink, whereby the cleaning operation is performed. 
     For example, the sealing members respectively provided to the ink flow passages of the black ink cartridge and color ink cartridge are controlled to be closed concurrently, and the negative pressure is applied thereto, and then the sealing member in the black ink cartridge is controlled to be open, whereby ink can be discharged only from nozzles for the black ink high in coloring density by the negative pressure. This makes it possible to concentrically execute the cleaning operation on the nozzles ejecting the black ink. 
     The cleaning process for the nozzles apertures ejecting specific ink is preferably executed by using a control program installed in the recording device. In this case, the cleaning process for the nozzles ejecting specific ink is preferably performed depending on a left standing time after the printing operation of the recording device ends. 
     The cleaning operation for the specific ink is preferably performed by using a utility of a print driver installed in a host computer, or it is designated by a button (not shown) or the like provided on the recording device, and the cleaning operation is preferably performed to correspond to the specific ink in accordance with the designation information. 
     Description has been made placing emphasis on the efficient cleaning operation achieved by controlling the passage control system of the ink flow passages of the ink cartridges for valve opening and closing. If required, the following control may also be realized by the utilization of such a construction that the passage control system are individually controlled for valve opening and closing. 
     The recording device includes an ink end detecting system for detecting an ink end state in the ink cartridge. If the passage control system, or the sealing member  7   j , of the ink flow passage  7   f  the ink end of which state is detected, is kept in a valve closing state at least in a state that the negative pressure is applied from the negative pressure generating system to the capping system, it is possible to eliminate a case in which the ink is completely discharged from the ink chamber or the ink chamber is empty, as the result of the ink discharging by the cleaning operation. 
     As already stated in the embodiment description, the porous material (foam)  7   b  is contained in each ink storage chambers  7   a . In the ink cartridge in which the ink is stored in a state that the porous material  7   b  is impregnated with the ink, when the ink is completely used up and the ink chamber is empty, air flows into the ink chamber through the air communication hole. Consequently, it is impossible to apply a negative pressure thereto. 
     When the ink flow passage is empty, the subsequent bubble discharging ability is damaged. Accordingly, when an ink end state is detected, the sealing member  7   j  associated with the empty ink flow passage is individually kept in a valve closing state. By so doing, there is no chance that the problem as stated above occurs. 
     As to the ink end detecting system, the ink cartridge (foam cartridge) in which the ink is stored in a state that the porous material  7   b  is impregnated with the ink as in the embodiment can employ a software ink end detecting system. 
     The software ink end detecting system detects an ink end state in a manner that in the printing and flushing operations, an amount of used ink and an amount of ink consumed by the cleaning operation are obtained by counting the number of ink droplets ejected from the recording head, and those count values are summed. 
     A hardware ink end detecting system may be used for the ink cartridge of the type in which the ink is stored by putting ink in an ink pack made of a flexible material (although it is not presented in the embodiment). The hardware ink end detecting system mechanically detects a physical variation of the ink pack and judges if an ink end state is set up, from the detecting result. The recording device using the ink pack type ink cartridge also produces similar useful effects in a manner that when the hardware ink end detecting system detects an ink end, the above-mentioned control is executed. 
     In a color ink cartridge containing inlet plural colors, based on the foam ink cartridge, when one color ink storage chamber is put in an ink end state, it is a common practice that the color ink cartridge is exchanged with a new one although ink of other colors are still left therein. 
     In the case of the ink cartridge which is provided with the passage control system, or the sealing members  7   j , for the color storage chambers as mentioned above, ink of other color left in the chambers can be fully used. 
     Specifically, in performing the printing operation, the passage control system associated with the ink passage the ink end of which is detected is kept in a valve closing state, while the ink left there is used for printing. 
     Only the yellow ink is difficult in its identification. In this case, of other ink than the ink used up and the yellow ink, the ink the amount of which is largest is preferably used for printing. 
     In the printing using other ink than the ink used up, it is preferable to inform that the printing will be performed using other ink than the used up ink, by using a utility of a print driver installed in a host computer. 
     In the printing operation using other ink than the used upink, it is preferable to send a request to judge if the printing using other ink than the used up ink is to be performed by using the utility of a print driver installed in a host computer. 
     In a specific example, when the black ink cartridge is placed to an ink end state, the printing may be performed in a composite black by using the remaining color ink of cyan, magenta and yellow. In this case, the user recognizes the judgement request and instructs the recording device to print in the composite black. 
     As seen from the foregoing description, the ink cartridge of the second mode includes the passage control system provided in the ink flow passage ranging from the ink storage chamber to the ink supply port. The passage control system is capable of closing the ink flow passage or increasing a flow resistance of the ink flow passage by receiving a driving force of the actuator. Therefore, the passage control system of the ink cartridge is controlled so as to operate for valve opening and closing or to vary the flow resistance by the actuator of the recording device or the ink cartridge. 
     Accordingly, the air bubbles staying, for example, on the filter member within the supplying needle are effectively discharged by operating the passage control system for valve opening in a state that the negative pressure is accumulated in the inner space of the capping system. 
     An ink jet recording device employing the cleaning control method according to this invention performs an effective cleaning operation by the utilization of the ink cartridge of the second mode. Further, the passage control system are individually controlled for each color ink. Accordingly, the cleaning operation can efficiently be perform corresponding to specific ink. 
     That is, in the second mode of the present invention, the passage control system may be independently operated in an ink supply port by ink supply port basis or in an ink cartridge by ink cartridge basis. 
     An ink cartridge of a third mode of the present invention and an ink jet recording device using the same will be described. FIG. 21 is a cross sectional view, broken in part, showing a structure including a cartridge holder disposed on a carriage and an ink cartridge of a third mode of the invention mounted thereto. 
     A cartridge holder  61  is constructed with a holder case  62  which is opened in the upper end to have an opening permitting attachment and detachment of the ink cartridge, and a lid  63  which is provided at one end of the holder case and is turned through a hinge mechanism  62   a  to open and close the opening. 
     A free side end of the lid  63  is shaped like U to form a hook part  63   a , which is brought into engagement with an engaging part  62   b  formed on the holder case. Through the engagement of them, the lid  63  maintains the closing state of the cartridge holder. 
     A leaf-like spring member  64  is mounted on the reverse side of the holder case  62 . The spring member urges an ink cartridge (to be described later) loaded to the holder toward the bottom. A recording head  20  is mounted on the lower surface of the holder case  62  forming the cartridge holder  61 . 
     A hollow ink supplying needle  21  stands upward from the bottom of the holder case. The ink supplying needle serves as an ink introducing part for introducing ink from the loaded ink cartridge to the recording head  20 . 
     The ink cartridge set to the cartridge holder  61  is the black ink cartridge  7  already stated, in this instance. The ink cartridge  7  is formed with an ink storage chamber  7   a  as the ink cartridge of the second mode does so. The ink storage chamber contains a porous material  7   b , which is impregnated with ink. 
     The color ink cartridge  8  is different from the black ink cartridge  7  in that ink storage chambers containing ink of yellow, magenta and cyan are separately disposed side by side, but structural constructions which will be described later are substantially the same. 
     An ink supply port  65  is disposed on the bottom of the ink cartridge  7 . The ink supplying needle  21 , which is coupled to the ink supply port  65 , supplies ink from the ink cartridge to the recording head  20  via the filter member  22 . Within the ink supply port  65 , a passage control system  67  is disposed which is operated for valve opening in response to a relative pressing force from the ink supplying needle  21  (as will be described later), and allows the ink to flow from the ink storage chamber to the recording head. 
     The ink cartridge  7  is urged downward by the spring member  64  in a state that it is put in the holder case  62  as shown in FIG.  21 . An eccentric cam mechanism  32  as an actuator is located on the bottom of the holder case  62 . The ink cartridge  7  is vertically movable within the holder case  62  through the rotational drive of the eccentric cam mechanism  32 . 
     FIGS. 22 to  24  show a structure of the bottom of the cartridge holder, and a structure of the bottom of the ink cartridge loaded to the same. FIG. 22 shows a state just before the ink cartridge is loaded to the cartridge holder, and FIG. 23 shows a state that the ink cartridge is loaded to the cartridge holder, and the supplying of ink to the recording head is allowed. FIG. 24 shows a state that the ink cartridge is loaded to the cartridge holder, and the supplying of ink from the ink storage chamber is halted by the eccentric cam mechanism  32  (the passage control system  67  is put to a valve closing state). 
     In FIGS. 22 to  24 , like or equivalent numerals are used for designating like portions in the drawings already referred to. 
     As shown in FIGS. 22 to  24 , a cylindrical volume is formed within the ink supply port  65  of the ink cartridge  7 . A first packing member  71 , which is also cylindrical, is fit to the exit part of the ink supply port  65 . A second packing member  72 , which is also cylindrical, is fit to the innermost part of the ink supply port  65 . 
     The passage control system  67  is constructed with a disc like member  67   a  and a shaft  67   b  for guiding the disc like member in its movement. A bearing piece  73  for receiving the shaft  67   b  is projected into the inner space of the second packing member  72 . With such a structure, the disc like member  67   a  forming the passage control system  67  is movable in the axial direction of the shaft  67   b.    
     A coiled spring member  74 , wound around the shaft  67   b , is disposed between the disc like member  67   a  and the innermost part of the ink supply port  65 . The disc like member  67   a  is urged to the exit of the ink supply port  65  by the spring member  74 . 
     Accordingly, just before the ink cartridge is set to the cartridge holder  61  as shown in FIG. 22, one surface of the disc like member  67   a  is brought into contact with the first packing member  71 , whereby the valve closing state is maintained. 
     Therefore, the ink supply port is placed to a valve closing state by the disc like member  67   a  of the ink supply port  65  when the ink cartridge is not set to the recording device. Accordingly, even when the ink cartridge is removed from the recording device during its use, there is no chance that the ink leaks out of the ink cartridge or air enters the ink cartridge. Accordingly, that ink cartridge may be loaded again to the recording device. 
     When the ink cartridge is loaded to the cartridge holder  61 , the ink supplying needle  21  of the cartridge holder enters the ink supply port  65  of the ink cartridge, as shown in FIG.  23 . 
     As a result, the disc like member  67   a  of the ink supply port  65  is pushed upward with the tip of the ink supplying needle  21 , so that disc like member  67   a  is separated from the first packing member  71  and a valve opening state is set up. 
     At the same time, the ink supplying needle  21  is brought into contact with the inner surface of the first packing member  71 , so that a liquid tight state is set up between it and the ink supply port  65 . 
     In a state of the eccentric cam mechanism  32  as an actuator shown in FIG. 23, a cam surface remote from a shaft core  32   a  is directed upward. Accordingly, the ink cartridge is brought into contact with the cam surface, and the state shown in FIG. 23 is maintained. 
     In this state, the disc like member  67   a  is positioned at a mid position between the first packing member  71  and the second packing member  72 . Accordingly, the ink is introduced from the ink storage chamber of the ink cartridge to the ink supplying needle  21  via an ink passing hole  73   a  formed in the bearing piece  73 , and then to the recording head  20 . Accordingly, in this state, the recording device may perform the printing operation. 
     When in the FIG. 23 state, the eccentric cam mechanism  32  of the actuator is turned about 90°, the ink cartridge  7  is further moved toward the bottom of the cartridge holder by the spring member  64  of the lid  63  of the cartridge holder  61 , as shown FIG.  24 . 
     Accordingly, the ink supplying needle  21  being in contact with the inner surface of the first packing member  71  further moves to the inner part of the ink supply port  65 . Accordingly, the disc like member  67   a  is pushed up with the tip of the ink supplying needle  21 , and the reverse side of the disc like member  67   a  is brought into contact with the second packing member  72 , whereby the valve closing state is set up. As a result, the supplying of the ink from the ink chamber is halted. 
     In this way, the valve opening state shown in FIG.  23  and the valve closing state shown in FIG. 24 are set up by reciprocatively rotating the eccentric cam mechanism  32  within an angular range of 90°. 
     The mode of the invention to be described hereunder is that the cleaning operation is effectively performed by the utilization of the valve opening/closing function resulting from the above-mentioned operation. 
     Specifically, the cleaning operation is performed in a valve closing state that the reverse side of the disc like member  67   a  is brought into contact with the second packing member  72  as shown in FIG.  24 . And the carriage  1  shown in FIG. 1 is moved to the home position, so that the nozzle forming surface of the recording head is sealed with the capping system  9 . 
     When the suction pump  10  is driven in this state, a negative pressure is accumulated in the inner space of the capping system  9 . When the negative pressure is sufficiently accumulated, the air bubbles staying within the ink supplying needle  21  are expanded by the negative pressure. 
     When in this state, the eccentric cam mechanism  32  is turned by 90°, a valve opening state is set up as shown in FIG.  23 . As a result, a fast ink flow is generated instantaneously. Accordingly, the air bubbles within the ink supplying needle  21  are rapidly pulled to the filter member  22  and discharged through the filter member  22  to the capping system  9 . 
     By this action, the air bubbles staying at the stagnant parts in the ink flow passage of the head case in the recording head are also discharged effectively. 
     The cleaning operation based on the accumulated negative pressure may also be realized by using the FIG. 17 control circuit. Specifically, the actuator drive system  52  shown in FIG. 17 drives and rotates the eccentric cam mechanism  32 , i.e. the actuator, and moves the disc like member forming the passage control system of the ink cartridge. As a result, the valve opening or closing state is set up. 
     The cleaning operation of the recording head performed by the control circuit of FIG. 17 is executed in accordance with the FIG. 18 operation sequence. 
     When receiving a cleaning operation command issued by operating the operation switch  51  of the recording device or operating the input unit  42  of the host computer  40 , the cleaning sequence control system  49  produces control signals to start the cleaning operation. 
     And the cleaning sequence control system  49  sends a command signal to the carriage drive system  53  to drive the carriage motor  2 . The carriage  1  passes through the wiping member having entered to its moving path, and as a result, the nozzle forming surface of the recording head  20  is wiped out by the wiping member  11  (step S 11 ). 
     Subsequently, the carriage  1  is moved to the home position (step S 12 ), and with this, the nozzle forming surface of the recording head  20  is capped with the capping system  9  (step S 13 ). 
     At the same time, the passage control system is operated for valve closing (step S 14 ). Specifically, the cleaning sequence control system  49  sends a command signal to the actuator drive system  52  to drive the eccentric cam mechanism  32 , i.e. the actuator. As a result, the disc like member  67   a  forming the passage control system of the ink cartridge  7  brought into engagement with the second packing member  72  to seal it therewith. A valve closing state is set up. 
     Subsequently, the driving of the suction pump  10  starts (step S 15 ). This is achieved in a manner that the cleaning sequence control system  49  shown in FIG. 17 sends a control signal to the cleaning control system  47 , and the cleaning control system  47  in turn sends a command signal to the pump drive system  48 . As a result, the suction pump  10  is driven, a negative pressure is applied to the inner space of the capping system  9 , and the negative pressure is incrementally accumulated. 
     In this state, the control waits till a predetermined time (1) elapses after the start of driving the suction pump  10  (step S 16 ). When the negative pressure applied to the capping system  9  reaches its peak value or therearound, the passage control system, or the disc like member  67   a  of the ink cartridge  7 , is operated for valve opening (step S 17 ). 
     In this case, the sequence control system  49  manages the predetermined time (1), and sends a control signal to the eccentric cam mechanism  32 . As a result, the valve opening operation by the disc like member  67   a  of the ink cartridge  7  is performed. 
     And the control waits till a predetermined time (2) elapses after the valve opening operation of the disc like member  67   a  (step S 18 ). When it is judged that the predetermined time (2) elapsed in the step S 18 , the driving of the suction pump  10  is halted (step S 19 ). In this case, the sequence control system  49  manages the predetermined time (2) and sends a control signal to the cleaning control system  47 , thereby halting the driving of the suction pump  10 . 
     A variation of the negative pressure applied to the capping system  9  in the control sequence from the steps S 15  to S 19  may be depicted similarly to that shown in FIG.  19 . When the suction pump  10  driving starts, the negative pressure relatively sharply rises in the inner space of the capping system  9  as shown in FIG.  19 . When the predetermined time (1) elapses and the negative pressure reaches a peak value or therearound, the disc like member  67   a  of the ink cartridge  7  is moved for valve opening. 
     Then, the negative pressure is rapidly released and approaches atmosphere pressure. At this time, the suction pump  10  driving continues. Accordingly, the negative pressure does not rise to atmosphere pressure and settles down to a predetermined negative pressure. When the predetermined time (2) elapses after the valve opening by the disc like member  67   a  of the ink cartridge  7 , the driving of the suction pump is halted, and the negative pressure rises to atmosphere pressure. 
     As seen from the negative pressure characteristic shown in FIG. 19, the disc like member  67   a  is moved for valve opening at a time point that the predetermined time (1) terminates. As a result, a fast ink flow is generated in the ink flow passage from the ink cartridge to the nozzle apertures of the ink cartridge  7 . The air bubbles staying in the ink flow passage is effectively moved on the fast ink flow. 
     Also during the predetermined time (2), the driving of the suction pump  10  continues, and the air bubbles are discharged along with the ink flow. 
     Returning to FIG. 18, the capping of the recording head  20  by the capping system  9  is released (step S 20 ). Then, the driving of the suction pump  10  is temporarily driven and then halted (step S 21 ). Consequently, the waste ink discharged into the capping system  9  is wasted to the waste liquid tank  12  by the suction pump  10 . 
     The subsequent step S 22  checks if the number of ink suctions reaches a predetermined number. If it is below the predetermined one, the sequence from the steps S 13  to S 21  is repeated. If the step S 22  judges that it reaches the predetermined one, the wiping operation is executed (step S 23 ). The ink left on the nozzle forming surface of the recording head is wiped out by the wiping member  11  (step S 23 ). The recording head  20  is sealed with the capping system  9  (step S 24 ), and waits for incoming print data. 
     The cleaning operation using the ink cartridge of the third mode described above has been discussed with reference to the manual cleaning operation executed by operating the operation switch  51  of the recording device or operating the input unit  42  of the host computer  40 . However, it is useful to program the sequence of the cleaning operation to be executed in an initial ink filling operation for initially filling ink to the recording device. 
     In the initial ink filling operation, a number of air bubbles are likely to stay within the ink supplying needles and the ink flow passages of the recording head. 
     Accordingly, it is desirable that the ink to be initially filled to the recording head has a high degassed rate. However, there is a limit in increasing the degassed rate above a certain level. After the initial ink filling or charging, the ink is fed to the ink flow passage while replacing with an air layer. Accordingly, the degassed rate rapidly decreases. 
     In this respect, it is very important to completely discharge the air bubbles at the time of the initial ink charging operation. This ensures a stable printing operation. 
     It is useful to program the cleaning operation mentioned above to be executed when a manual cleaning command is issued again by user within a predetermined printing quantity as in the case using the ink cartridge of the second mode. 
     Such a situation that the manual cleaning command is issued again by user within a predetermined printing quantity, is mainly based on the fact that the user recognizes a printing failure and performs the cleaning operation again. In this case, there is a possibility that a relatively large amount of air flows into the ink flow passage of the recording head to hider the ink charging ability. 
     When a manual cleaning command is issued again by user within a predetermined printing quantity, it is suggestible that the control routine as of the FIG. 20 case is executed. The control routine utilizing the ink cartridge of the second mode has been already described as an example. Hence no repeated description on it will be given here. 
     The cleaning operation described above has been discussed on condition that the disc like members  67   a  of the passage control systems of the black and color ink cartridges are concurrently operated for valve opening and closing. 
     In other words, the cleaning operations has been discussed on condition that a negative pressure accumulating step in which the nozzle forming surface of the recording head is sealed with the capping system, the disc like members  67   a  of the ink cartridges are each put to a valve closing state and in this state, a negative pressure is applied from the suction pump to be accumulated in the capping system, and a negative pressure releasing step in which the disc like members  67   a  of the ink cartridges are each placed to a valve opening state in a state that the negative pressure is accumulated in the capping system, are each executed concurrently. 
     Ink high in coloring density, e.g., suffers from a problem in that the restoring ability by the cleaning operation is low in comparison to ink of other colors. Accordingly, when the operation sequence mentioned above is used, the nozzles ejecting color ink first resumes their normal ejecting function, and the color ink is further discharged into the capping system, whereas a negative pressure is hard to act on the nozzles ejecting the black ink. 
     To cope with the problem, it is desirable to independently control the respective disc like members  67   a  as the passage control systems by the actuators  32 . 
     In this case, the negative pressure accumulating step and the negative pressure releasing step are capable of driving only the disc like member  67   a  of a specific ink cartridge. Such a control is also possible that the negative pressure accumulating step is executed concurrently and only the negative pressure releasing step is executed for only a specific ink passage. 
     With the control, the negative pressure is effected to only the ink cartridge storing specific ink, whereby the cleaning operation is performed. 
     For example, the disc like members  67   a  respectively provided to the ink supply ports of the black ink cartridge and color ink cartridge are controlled to be closed concurrently, and the negative pressure is applied thereto, and then the disc like member  67   a  in the black ink cartridge is controlled to be open, whereby ink can be discharged only from nozzles for the black ink high in coloring density by the negative pressure. This makes it possible to concentrically execute the cleaning operation on the nozzles ejecting the black ink. 
     The cleaning process for the nozzles ejecting specific ink is preferably executed by using a control program installed in the recording device. In this case, the cleaning process for the nozzles ejecting specific ink is preferably performed depending on a left standing time after the printing operation of the recording device ends. 
     The cleaning operation corresponding to the specific ink is preferably performed by using a utility of a print driver of a host computer, or it is designated by a button (not shown) or the like provided on the recording device, and the cleaning operation is preferably performed corresponding to a specific ink cartridge in accordance with the designation information. 
     In the above-mentioned embodiment, the eccentric cam mechanism  32 , i.e. the actuator, which is provided on the cartridge holder, is electrically driven to rotate. The eccentric cam mechanism  32  may manually be rotated, if necessary. To electrically control the actuator, another device, e.g., an electromagnetic plunger, maybe used instead of the eccentric cam mechanism. 
     As seen from the foregoing description, the ink cartridge of the third mode uses the passage control system which, when it is loaded to the recording device, is operated for valve opening when receiving a pressing force from the ink introducing part of the recording device and is operated for valve closing state when receiving a further pressing force therefrom. Accordingly, the passage control system can be opened and closed depending on the pressing force of the ink introducing part. Therefore, the air bubbles staying, for example, in the supplying needle is effectively discharged by releasing the passage control system in a state that the negative pressure is accumulated in the inner space of the capping system. 
     The ink jet recording device using the cleaning control method according to the present invention, when using the ink cartridge of the third mode, performs an effective cleaning operation. Since the flow passage control systems can be individually controlled in a cartridge by cartridge basis, the cleaning operation is efficiently performed corresponding to specific ink.