Patent Publication Number: US-9889648-B2

Title: Liquid ejecting apparatus

Description:
The entire disclosure of Japanese Patent Application No: 2015-044740, filed Mar. 6, 2015 is expressly incorporated by reference herein in its entirety. 
     BACKGROUND 
     1. Technical Field 
     The present invention relates to a technology in which liquid such as ink is ejected. 
     2. Related Art 
     In a liquid ejecting apparatus such as an ink jet printer, a liquid ejecting head with a structure in which liquid such as ink which is supplied to a plurality of pressure chambers from a common liquid chamber (reservoir) is ejected from nozzles by generating a pressure in each pressure chamber has been proposed in the related art. Since a plurality of pressure chambers communicate with the common liquid chamber, a technology in which a damper chamber (also referred to as compliance space) is provided in the common liquid chamber through a flexible film has also been proposed so that a pressure change in each pressure chamber does not have an influence on a separate pressure chamber through the common liquid chamber. In this manner, the damper chamber functions as a damper which causes a flexible film to absorb a delicate pressure change in the common liquid chamber in a normal state such as at a time of printing. 
     However, there is a case in which such a flexible film of a damper chamber is excessively bent. Specifically, there is a case in which a pressure change which is different from a normal state occurs in a common liquid chamber. For example, there is a case in which, when cleaning an ejecting face of a liquid ejecting head, pressurizing wiping in which the ejecting face is wiped while causing ink to be oozed out from a nozzle by pressurizing the inside of the liquid ejecting head is performed (JP-A-2011-173361 and JP-A-2011-161827). Though it is not described in JP-A-2011-173361 and JP-A-2011-161827, when the pressurizing wiping is going to be performed in an apparatus which includes the above described common liquid chamber, it is necessary to forcibly pressurize the common liquid chamber in order to cause ink to be oozed out from the nozzle. In such a case, excessive bending easily occurs in the flexible film of the damper chamber. When the flexible film is excessively bent, there is a concern that the flexible film may lose its function by sticking to the inside of the damper chamber, or may be separated. In addition, also in a case in which slippage or wrinkle occurs when attaching the flexible film, in addition to that, excessive bending easily occurs in the flexible film of the damper chamber. 
     SUMMARY 
     An advantage of some aspects of the invention is to suppress excessive bending of a flexible film of a damper chamber. 
     Aspect 1 
     A liquid ejecting apparatus according to a preferable aspect (Aspect 1) of the invention includes a plurality of pressure chambers which generate a pressure for ejecting liquid from a nozzle; a common liquid chamber which stores liquid which is supplied to the plurality of pressure chambers; a flexible film which configures a part of a wall face of the common liquid chamber; a damper chamber which is partitioned from the common liquid chamber using the flexible film; and a first pressurizing unit which pressurizes the damper chamber. In Aspect 1, since the first pressurizing unit which pressurizes the damper chamber is included, it is possible to suppress excessive bending of the flexible film by pressurizing the damper chamber using the first pressurizing unit, even when the common liquid chamber is forcibly pressurized at a time of a pressurizing wiping operation, or the like, for example. 
     Aspect 2 
     In a preferable example (Aspect 2) of Aspect 1, a second pressurizing unit which pressurizes liquid which is supplied to the common liquid chamber is further included. In Aspect 2, since the second pressurizing unit which pressurizes liquid which is supplied to the common liquid chamber is further included, it is possible to increase a pressurizing effect of the common liquid chamber compared to a case in which the common liquid chamber is forcibly pressurized using only the first pressurizing unit. 
     Aspect 3 
     In a preferable example (Aspect 3) of Aspect 2, pressurizing of the damper chamber using the first pressurizing unit is performed before pressurizing using the second pressurizing unit. In Aspect 3, since pressurizing of the damper chamber using the first pressurizing unit is performed before pressurizing using the second pressurizing unit, it is possible to bend the flexible film to the common liquid chamber side, before pressurizing the common liquid chamber using the second pressurizing unit. In this manner, it is possible to effectively suppress excessive bending of the flexible film when the common liquid chamber is pressurized using the second pressurizing unit. 
     Aspect 4 
     In any one preferable example (Aspect 4) of Aspects 1 to 3, an atmosphere opening port which causes an inside of the damper chamber to communicate with atmosphere, and an on-off valve which is provided between the damper chamber and the atmosphere opening port are further included. In Aspect 4, since the atmosphere opening port which causes the inside of the damper chamber to communicate with atmosphere, and the on-off valve which is provided between the damper chamber and the atmosphere opening port are provided, it is possible to set the damper chamber to a closed space by shutting off the damper chamber from atmosphere by closing the on-off valve. It is possible to effectively suppress bending of the flexible film by pressurizing the damper chamber which is a closed space. 
     Aspect 5 
     In a preferable example (Aspect 5) of Aspect 4, pressurizing of the damper chamber using the first pressurizing unit is performed after closing the on-off valve. In aspect 5, since pressurizing of the damper chamber using the first pressurizing unit is performed after closing the on-off valve, it is possible to pressurize the damper chamber using the first pressurizing unit, after setting the damper chamber to a closed space which is shut off from atmosphere by closing the on-off valve. In this manner, it is possible to increase pressurizing efficiency of the damper chamber compared to a case in which the damper chamber is pressurized using the first pressurizing unit without being shut from atmosphere. 
     Aspect 6 
     In a preferable example (Aspect 6) of Aspect 4 or 5, when finishing pressurizing of the damper chamber, a pressurizing operation of the first pressurizing unit is stopped after opening the on-off valve. When the pressurizing operation of the first pressurizing unit is stopped, a pressure of the damper chamber drops from stopping of the pressurizing operation. For this reason, if water vapor of the damper chamber is saturated at a time of pressurizing, there is a concern that dew condensation may occur when a pressure of the damper chamber drops in a state in which the on-off valve is not opened. In this point, in Aspect 6, since the pressurizing operation of the first pressurizing unit is stopped after opening the on-off valve when finishing pressurizing of the damper chamber, it is possible to suppress an occurrence of dew condensation, since water vapor can be escaped by causing the damper chamber to be opened to atmosphere before stopping the pressurizing operation of the first pressurizing unit. 
     Aspect 7 
     In a preferable example (Aspect 7) of Aspect 4 or 5, when finishing pressurizing of the damper chamber, the on-off valve is opened after stopping the pressurizing operation of the first pressurizing unit. If water vapor of the damper chamber is saturated, since water vapor escapes due to opening to atmosphere, there is a concern that moisture loss from the common liquid chamber through the flexible film may progress that much. In this point, in Aspect 7, since the on-off valve is opened after stopping the pressurizing operation of the first pressurizing unit when finishing pressurizing of the damper chamber, it is possible to finish pressurizing of the damper chamber while suppressing escaping of water vapor due to opening to atmosphere. 
     Aspect 8 
     In any one preferable example (Aspect 8) of Aspects 1 to 7, a wiping unit which wipes an ejecting face on which a plurality of nozzles are provided is further included, in which the ejecting face is wiped using the wiping unit in the middle of pressurizing the damper chamber using the first pressurizing unit. In Aspect 8, since the ejecting face is wiped using the wiping unit in the middle of pressurizing the damper chamber using the first pressurizing unit, it is possible to suppress excessive bending of the flexible film during the wiping operation. In addition, a preferable example of the liquid ejecting apparatus is a printing apparatus which ejects ink to a medium such as a printing sheet; however, a use of the liquid ejecting apparatus according to the aspects of the invention is not limited to printing. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will be described with reference to the accompanying drawings, wherein like numbers reference like elements. 
         FIG. 1  is a configuration diagram of a printing apparatus to which a liquid ejecting apparatus according to an embodiment of the invention is applied. 
         FIG. 2  is an explanatory diagram which describes a wiping operation of the printing apparatus which is illustrated in  FIG. 1 . 
         FIG. 3  is a plan view which illustrates a configuration of a face which faces a medium in a liquid ejecting unit including a plurality of liquid ejecting heads. 
         FIG. 4  is an exploded perspective view which illustrates a configuration example of one liquid ejecting head in the liquid ejecting unit which is illustrated in  FIG. 3 . 
         FIG. 5  is a sectional view of a portion of the liquid ejecting unit which is illustrated in  FIG. 4 , corresponding to one nozzle. 
         FIG. 6  is a diagram which illustrates a comparison example in which a first pressurizing unit which pressurizes a damper chamber is not provided, and an explanatory diagram of a pressurizing wiping operation. 
         FIG. 7  is a block diagram which describes a pressurizing function according to the embodiment. 
         FIG. 8  is a sectional view which illustrates a specific configuration example of the first pressurizing unit according to the embodiment. 
         FIG. 9  is a sectional view which illustrates a specific configuration example of a second pressurizing unit according to the embodiment. 
         FIG. 10  is a sectional view which illustrates a specific configuration example of a pressure adjusting valve illustrated in  FIG. 9 . 
         FIG. 11  is a flowchart which illustrates a specific example of a pressurizing wiping operation according to the embodiment. 
         FIG. 12  is a block diagram which describes a modification example of the first pressurizing unit according to the embodiment. 
         FIG. 13  is a sectional view which illustrates a specific configuration example of a pressurizing adjusting valve illustrated in  FIG. 12 . 
         FIG. 14  is a block diagram which describes another modification example of the first pressurizing unit according to the embodiment. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Embodiment 
     First, a liquid ejecting apparatus according to an embodiment of the invention will be described using an ink jet printing apparatus as an example.  FIG. 1  is a partial configuration diagram of a printing apparatus  10  according to the embodiment of the invention. The printing apparatus  10  according to the embodiment is a liquid ejecting apparatus which ejects ink as an example of liquid onto a medium (ejecting target)  12  such as a printing sheet, and includes a control device  22 , a transport mechanism  24 , and a liquid ejecting unit  26 . A liquid container (cartridge)  14  which stores ink is mounted on the printing apparatus  10 . 
     The control device  22  integrally controls each element of the printing apparatus  10 . The control device  22  includes a CPU, a ROM, a RAM, and the like. Various programs such as a program for performing a pressurizing wiping operation, which will be described later, are stored in the ROM in addition to a program for performing a printing operation which will be executed by the CPU. In addition, various data items for processing an operation result of the CPU, or a control program by executing thereof are temporarily stored in the RAM. 
     The transport mechanism  24  includes a first roller  242  and a second roller  244 , and transports the medium  12  in the Y direction (transport direction) under a control of the control device  22 . The first roller  242  transports the medium  12  to the second roller  244  side by being arranged on the negative side in the Y direction (upstream side of medium  12  in transport direction) when viewed from the second roller  244 , and the second roller  244  transports the medium  12  which is supplied from the first roller  242  to the positive side in the Y direction. However, a structure of the transport mechanism  24  is not limited to the above example. 
     The liquid ejecting unit  26  in  FIG. 1  ejects ink which is supplied from the liquid container  14  onto the medium  12  which is transported using the transport mechanism  24  under a control of the control device  22 . The liquid ejecting unit  26  according to the embodiment is a line head which is long in the X direction (first direction) which is orthogonal to the Y direction. As illustrated in  FIG. 2 , a plurality of nozzles (ejecting holes) N from which ink is ejected are provided on a face of the liquid ejecting unit  26  which faces the medium  12  (hereinafter, referred to as “ejecting face”). 
     As illustrated in  FIG. 2 , the printing apparatus  10  includes a wiping device  28  as a wiping unit for wiping the ejecting face of the liquid ejecting unit  26 . The wiping device  28  is used when executing a wiping operation for removing an attached matter such as paper dust, or ink by wiping the ejecting face of the liquid ejecting unit  26 . The wiping device  28  includes a wiper  29  which is obtained by forming an elastic member such as rubber in a blade shape. In addition, a shape of the wiper  29  is not limited to the blade shape, and may be a strip shape, for example. The wiping device  28  is configured so as to move in the X direction along the ejecting face of the liquid ejecting unit  26  using a motor which is not illustrated. In this manner, it is possible to perform a wiping operation when the wiping device  28  moves in the X direction along the ejecting face, while a tip end of the wiper  29  is in contact with the ejecting face of the liquid ejecting unit  26 . However, the direction in which the wiping device  28  moves is not limited to the X direction, and may be the Y direction. 
     According to the embodiment, it is configured so that it is possible to perform a pressurizing wiping operation in which the ejecting face is wiped using the wiping device  28 , while causing ink to be oozed out from each nozzle N by pressurizing the inside of the liquid ejecting unit  26 . The reason for performing such a pressurizing wiping operation is as follows. In wiping of the ejecting face, the tip end of the wiper  29  moves while being in contact with the ejecting face. For this reason, when wiping of the ejecting face is performed without pressurizing the inside of the liquid ejecting unit  26 , there is a concern that ink with high viscosity which is attached to the vicinity of the nozzle N may be rubbed in the nozzle N, or bubbles may enter into the nozzle N. Specifically, in a liquid ejecting unit  26  with a long line head, since a cleaning area is wide, and the number of nozzles N is also large, the above described problem easily occurs. In this point, according to the pressurizing wiping operation, it is possible to prevent ink or bubble from entering into the nozzle N, since the ejecting face is wiped while causing ink to be oozed out from each nozzle N, by pressurizing the inside of the liquid ejecting unit  26 . 
       FIG. 3  is a plan view which illustrates a configuration example of the ejecting face (nozzle face) of the liquid ejecting unit  26 . As illustrated in  FIG. 3 , the plurality of nozzles N are provided on the ejecting face of the liquid ejecting unit  26 . The liquid ejecting unit  26  is arranged so that the ejecting face faces the medium  12  with a predetermined interval in a state of being parallel to an X-Y plane. When the liquid ejecting unit  26  ejects ink onto the medium  12  in parallel with transporting of the medium  12  using the transport mechanism  24 , a desired image is formed on the surface of the medium  12 . In addition, hereinafter, a direction which is orthogonal to the X-Y plane (for example, plane with no deformation which is parallel to surface of medium  12 ) will be denoted by the Z direction. An ejecting direction of ink using the liquid ejecting unit  26  (for example, vertically lower direction) corresponds to the Z direction. In addition, the transverse direction of a region R of the ejecting face of the liquid ejecting unit  26  in which the plurality of nozzles N are distributed (hereinafter, referred to as “nozzle distribution region”) corresponds to the Y direction, and the longitudinal direction of the nozzle distribution region R corresponds to the X direction. 
       FIG. 3  is a diagram which describes a configuration example of the liquid ejecting unit  26 , and is a plan view which illustrates a face which faces the medium  12 . As illustrated in  FIG. 3 , the liquid ejecting unit  26  according to the embodiment includes a plurality of (six, here) liquid ejecting heads  30 . The plurality of liquid ejecting heads  30  are fixed to a housing (not illustrated) of the liquid ejecting unit  26  in a state of being arranged along the X direction. 
     Subsequently, a configuration example of the liquid ejecting head  30  which is illustrated in  FIG. 3  will be described in detail with reference to  FIG. 4 .  FIG. 4  is an exploded perspective view which illustrated the configuration example of the liquid ejecting head  30 . In addition, since all of six liquid ejecting heads  30  which are illustrated in  FIG. 3  have the same configuration, one liquid ejecting head  30  will be extracted, and a portion thereof which corresponds to one nozzle N will be representatively described here. As illustrated in  FIG. 4 , the liquid ejecting head  30  includes a liquid ejecting unit  32 , a support body  34 , a flow path structure body  36 , and a fixing plate  38 . The support body  34  is a housing which accommodates and supports a plurality of the liquid ejecting units  32 , and is formed using injection molding of a resin material, or diecast molding of a metal material, for example. In addition, the support body forms a flow path of ink which is supplied to the plurality of liquid ejecting units  32 . The flow path structure body  36  is a structure body in which a flow path for distributing ink which is supplied from the liquid container  14  to the plurality of liquid ejecting units  32  is formed, and includes, for example, a valve structure for controlling opening-closing of a flow path or a pressure, or a filter for collecting bubbles or foreign substances which are mixed into ink in the flow path. In addition, it is also possible to integrally form the support body  34  and the flow path structure body  36 . 
     Each liquid ejecting unit  32  is configured as a head chip which ejects ink from the plurality of nozzles N. As illustrated in  FIG. 3 , the plurality of nozzles N of each liquid ejecting unit  32  are arranged in two columns along the W direction which intersects the X direction. As illustrated in  FIG. 3 , the W direction according to the embodiment is a direction which is inclined in a predetermined angle (for example, angle in range of 30° C. or more and 60° C. or less) with respect to the X direction and Y direction in the X-Y plane. According to the embodiment, as illustrated in  FIG. 3 , positions of the plurality of nozzles N are selected so that a pitch PX in the X direction (specifically, distance between centers of each nozzle N) becomes smaller than a pitch PY in the Y direction (PX&lt;PY). As the above described example, according to the embodiment, since the plurality of nozzles N are arranged in the W direction which is inclined to the Y direction in which the medium  12  is transported, it is possible to increase a practical resolution (dot density) of the medium  12  in the X direction, compared to a configuration in which the plurality of nozzles N are arranged along the X direction, for example. 
     Here, a configuration example of the liquid ejecting unit  32  which is illustrated in  FIG. 4  will be described in detail with reference to  FIG. 5 . In addition, since all of the plurality of liquid ejecting units  32  illustrated in  FIG. 4  have the same configuration, descriptions will be made by extracting one of the liquid ejecting unit.  FIG. 5  is a sectional view which illustrates a configuration of a section of the liquid ejecting unit  32  which is orthogonal to the W direction in a portion of the liquid ejecting unit  32  which corresponds to one nozzle N. In  FIG. 5 , a portion of the liquid ejecting unit  32  which corresponds to one nozzle N is conveniently illustrated; however, the liquid ejecting unit  32  here includes two nozzles N, and is configured by arranging structures which eject ink by supplying the ink to each nozzle N in linear symmetry, respectively, with respect to a symmetry axis which is parallel in the W direction. However, the liquid ejecting unit  32  is not necessarily limited to the configuration, may be a unit which is formed of a structure corresponding to one nozzle N, or may have a configuration in which nozzles N are arranged in zigzag in the W direction between two columns which go along the W direction. 
     As illustrated in  FIG. 5 , the liquid ejecting unit  32  according to the embodiment is a layered structure body. The liquid ejecting unit  32  includes a flow path substrate  41  as an example of a flow path member. A pressure chamber substrate  42 , a vibrating plate  43 , a housing  44 , and a sealing plate  45  are arranged on one side (negative side in Z direction) of the flow path substrate  41 . A nozzle plate  46 , and a compliance unit  47  are arranged on the other side of the flow path substrate  41 . Each element of the liquid ejecting unit  32  is an approximately flat plate-shaped member which is long in the W direction, schematically, and is fixed to each other using an adhesive, for example. 
     The nozzle plate  46  in  FIG. 5  is a substrate on which the plurality of nozzles N are formed. The nozzle plate  46  according to the embodiment is a flat plate which is long in the W direction as is understood from  FIG. 4 , as well, and is formed using a silicon single crystal substrate, for example. Specifically, as illustrated in  FIG. 3 , the plurality of nozzles N which are arranged in two columns along the W direction are formed on the nozzle plate  46  of each liquid ejecting unit  32 . 
     The flow path substrate  41  in  FIG. 5  is a flat plate which configures a flow path of ink. An opening portion  412 , a supply flow path  414 , and a communicating flow path  416  are formed in the flow path substrate  41  in the embodiment. The supply flow path  414  and the communicating flow path  416  are through holes which are formed in each nozzle N, and the opening portion  412  is a through hole which is continuous over the plurality of nozzles N. A space which causes an accommodating unit (recessed portion)  442  which is formed in the housing  44  and the opening portion  412  of the flow path substrate  41  to communicate with each other functions as a common liquid chamber SR (reservoir or manifold) which stores ink which is supplied from the liquid container  14  through a introducing flow path  443  of the housing  44 . 
     The compliance unit  47  in  FIG. 5  is an element for controlling a pressure change of ink in the common liquid chamber SR, and includes a flexible film (elastic film)  472 , and a support plate  474 . The flexible film  472  is a flexible member which is formed in a film shape, and configures a part of a wall face (specifically, base) of the common liquid chamber SR. The support plate  474  is a flat plate which is formed of a high rigidity material such as stainless steel (SUS), and supports the flexible film  472  on the surface of the flow path substrate  41  so that the opening portion  412  of the flow path substrate  41  is shut off using the flexible film  472 . An opening portion  476  is formed in a region of the support plate  474  which overlaps the common liquid chamber SR by interposing the flexible film  472  therebetween. A space in the inside of the opening portion  476  of the support plate  474  communicates with atmosphere, and functions as a damper chamber SD for deforming the flexible film  472  so that a pressure change in the common liquid chamber SR is absorbed. When the flexible film  472  is deformed according to a pressure of ink in the common liquid chamber SR, a pressure change in the common liquid chamber SR is suppressed (absorbed). 
     An opening portion  422  is formed in each nozzle N in the pressure chamber substrate  42  in  FIG. 5 . The vibrating plate  43  is a flat plate which can be elastically vibrated, and is fixed to the surface of the pressure chamber substrate  42  on a side opposite to the flow path substrate  41 . A space which is interposed between the vibrating plate  43  and the flow path substrate  41  in the inside of each opening portion  422  of the pressure chamber substrate  42  functions as a pressure chamber (cavity) SC which is filled with ink supplied from the common liquid chamber SR through the supply flow path  414 . Each pressure chamber SC communicates with a nozzle N through the communicating flow path  416  of the flow path substrate  41 . In addition, a piezoelectric element  432  is formed in each nozzle N on the surface of the vibrating plate  43  on a side opposite to the pressure chamber substrate  42 . Each piezoelectric element  432  is a driving element which is obtained by interposing a piezoelectric element layer between electrode layers which face each other. A plurality of the piezoelectric elements  432  are sealed with the sealing plate  45 . However, a configuration of the liquid ejecting unit  32  is not limited to the above described configuration, and for example, may be a configuration in which the vibrating plate  43  and the pressure chamber substrate  42  are integrally formed, and a part of the pressure chamber substrate  42  is elastically vibrated. That is, as the liquid ejecting unit  32 , it is preferable when ink in the common liquid chamber SR of which a part of wall face is configured by the flexible film  472  can be ejected through the pressure chamber (cavity) SC and the nozzle N. 
     The plurality of liquid ejecting units  32  with the above exemplified structure are fixed to the fixing plate  38  in  FIG. 4 . As illustrated in  FIG. 4 , the fixing plate  38  includes a support unit  382  and a plurality of peripheral edge portions  384 . The support unit  382  is a flat plate-shaped portion which includes a first face Q 1  and a second face Q 2  which are located on a side opposite to each other. The support unit  382  is molded in a rectangular shape (specifically, parallelogram shape) which is defined by a pair of edges which extend in the W direction, and a pair of edges which extend in the X direction. The first face Q 1  of the support unit  382  is the surface on the negative side in the Z direction, and the second face Q 2  is the surface on the positive side (medium  12  side) in the Z direction. The second face Q 2  of the support unit  382  is subjected to water-repellent finishing. Meanwhile, each peripheral edge portion  384  is a portion which is continuous to each edge of the support unit  382 , and is bent on the negative side in the Z direction so as to be approximately orthogonal to the first face Q 1  or the second face Q 2  of the support unit  382 . The support unit  382  and a plurality of the peripheral edge portions  384  are integrally configured by bending a flat plate which is formed in a predetermined shape using a high rigidity material such as stainless steel, for example. 
     As illustrated in  FIG. 5 , the plurality of liquid ejecting units  32  of the liquid ejecting head  30  are fixed to the first face Q 1  of the support unit  382  of the fixing plate  38  so that the nozzle plate  46  is exposed to an opening portion  48  of the fixing plate  38 . In addition, each peripheral edge portion  384  of the fixing plate  38  is fixed to the support body  34  which is illustrated in  FIG. 4  using an adhesive, for example, in a state in which the plurality of liquid ejecting units  32  are fixed onto the first face Q 1  of the support unit  382  in this manner. As illustrated in  FIG. 3 , the plurality of liquid ejecting heads  30  with the above exemplified structure are arranged in the X direction in a state of facing the second face Q 2  of the fixing plate  38  on the positive side in the Z direction. As is understood from the above descriptions, a plane which is configured using the second face Q 2  of the plurality of liquid ejecting heads  30  corresponds to the ejecting face. 
     As illustrated in  FIG. 4 , the opening portion  48  which exposes the nozzle plate  46  according to the embodiment is formed on the support unit  382  of the fixing plate  38  which configures a face facing the medium  12 . In the support unit  382 , the plurality of (six, here) opening portions  48  which correspond to each liquid ejecting unit  32  are formed, and each opening portion  48  is arranged in the X direction with a predetermined interval each other. Each opening portion  48  is a long through hole which extends along the W direction in a planar view (when viewed in direction which is perpendicular to Z direction). As illustrated in  FIG. 3 , each liquid ejecting unit  32  is fixed to the first face Q 1  of the support unit  382  in a state in which the nozzle plate  46  of each liquid ejecting unit  32  is located in the inside of one opening portion  48 . As is understood from the above descriptions, each opening portion  48  of the fixing plate  38  is a through hole for exposing the plurality of nozzles N of each liquid ejecting unit  32 . As illustrated in  FIG. 5 , a space in the inside of the opening portion  48  (specifically, gap between inner peripheral face of opening portion  48  and outer peripheral face of nozzle plate  46 ) is filled with a filling material  49  which is formed of a resin material, for example. 
     As illustrated in  FIG. 5 , according to the embodiment, the surface of the support plate  474  of the compliance unit  47  on a side opposite to the flexible film  472  is fixed to the first face Q 1  of the fixing plate  38  using an adhesive, for example. That is, the opening portion  476  of the support plate  474  is shut off using the first face Q 1  of the fixing plate  38 . A space which is interposed between the flexible film  472  and the first face Q 1  in the inside of the opening portion  476  of the support plate  474  becomes the damper chamber SD for vibrating the flexible film  472 . As described above, the flexible film  472  of the damper chamber SD can suppress a pressure change of the pressure chamber SC of another nozzle N, since a pressure change in the common liquid chamber SR is suppressed (absorbed) when the flexible film is deformed according to a pressure of ink in the common liquid chamber SR. In this manner, the flexible film  472  of the damper chamber SD is originally a film to be deformed so that a pressure change in the common liquid chamber SR is absorbed. 
     However, there is a case in which the inside of the common liquid chamber SR is forcibly pressurized such as a case in which the above described pressurizing wiping operation is performed, for example, and in such a case, there is a concern that the flexible film  472  may be excessively deformed. 
     The case in which the flexible film  472  is excessively deformed at a time of such a pressurizing wiping operation will be described more specifically, as a comparison example.  FIG. 6  is an explanatory diagram of an operation in a comparison example for describing the case in which the flexible film  472  is excessively deformed at a time of the pressurizing wiping operation. As illustrated in  FIG. 6 , when performing the pressurizing wiping operation, ink is oozed out from a nozzle N when the ink in the common liquid chamber SR is pressurized. For this reason, ink projects without recessing of the vicinity of an outlet in the nozzle N. It is possible to prevent ink or bubbles from entering into the nozzle N, by wiping the ejecting face using the wiper  29  by driving the wiping device  28  in this state. 
     However, since ink in the common liquid chamber SR is pressurized at a time of the pressurizing wiping operation, the flexible film  472  is excessively deformed in a direction of the white arrow so as to be recessed in the damper chamber SD. At this time, when deformation of the flexible film  472  is remarkable, there is a problem in that the flexible film does not normally function by sticking to a wall of the damper chamber SD, or the flexible film  472  is separated as illustrated in the enlarged view in  FIG. 6 . The flexible film  472  is attached to the flow path substrate  41  using an adhesive t 1 , and is attached to the support plate  474  using an adhesive t 2 . In this case, the support plate  474  is formed of a high rigidity material such as stainless steel (SUS); however, the support plate is extremely thin compared to the flow path substrate  41 . For this reason, as illustrated in the enlarged view in  FIG. 6 , since the support plate is easily bent along with the flexible film  472 , there is a concern that the flexible film  472  may be previously separated from the flow path substrate  41 . 
     Therefore, according to the embodiment, it is set so that such an excessive deformation of the flexible film  472  can be suppressed by providing a first pressurizing unit  50 , as a pressurizing mechanism, which pressurizes the damper chamber SD, as illustrated in  FIG. 5 . Pressurizing of ink in the common liquid chamber SR according to the embodiment is performed using a second pressurizing unit  60  which is provided in the liquid supply flow path  61  which supplies ink by communicating with the liquid container (cartridge)  14 . According to the embodiment, the damper chamber SD is pressurized using the first pressurizing unit  50  before pressurizing ink in the common liquid chamber SR using the second pressurizing unit  60 . In this manner, it is possible to prevent the flexible film  472  from being excessively bent to the damper chamber SD due to a pressure from the damper chamber SD, even when ink in the common liquid chamber SR is pressurized. In addition, since bending of the flexible film  472  can be suppressed, it is possible to improve a response when pressurizing ink in the common liquid chamber SR. 
     A pressurizing mechanism in the embodiment will be more specifically described with reference to drawings.  FIG. 7  is a block diagram which illustrates a configuration of a pressurizing mechanism in the embodiment. The block diagram illustrated in  FIG. 7  is a block diagram in which a configuration of each unit illustrated in  FIG. 5  is denoted so that a flow of a pressurizing operation is easily understood. In  FIG. 7 , portions with the same function as those illustrated in  FIG. 5  are given the same reference numerals, and detailed descriptions thereof will be omitted. As illustrated in  FIG. 7 , in the common liquid chamber SR, ink which is pressurized is supplied from the second pressurizing unit  60  through the liquid supply flow path  61 , and is temporarily stored. A plurality of the pressure chambers SC communicate with the common liquid chamber SR, and ink which is stored in the common liquid chamber SR is supplied to each pressure chamber SC. Each pressure chamber SC causes ink to be ejected from the nozzle N using a pressure which is generated by the piezoelectric elements  432 . 
     The flexible film  472  configures a part of the wall face of the common liquid chamber SR. The damper chamber SD is partitioned from the common liquid chamber SR due to the flexible film  472 . The first pressurizing unit  50  which pressurizes the damper chamber SD is connected to the damper chamber SD. Specifically, a communicating path  51  which includes an atmosphere opening port  58  which causes the damper chamber SD to communicate with atmosphere is connected to the damper chamber SD, and the first pressurizing unit  50  is intervened in the middle of the communicating path  51 . In addition, in the communicating path  51 , an on-off valve  59  for shutting or opening the damper chamber SD with respect to atmosphere is intervened between the first pressurizing unit  50  and the atmosphere opening port  58 . It is possible to set the damper chamber SD to a closed space by shutting the damper chamber SD from atmosphere by closing the on-off valve  59 . By pressurizing the damper chamber SD as the closed space, it is possible to effectively suppress bending of the flexible film  472 . The control device  22  performs the pressurizing wiping operation by controlling the first pressurizing unit  50 , the second pressurizing unit  60 , the on-off valve  59 , and the wiping device  28 . The pressurizing wiping operation according to the embodiment in which the pressurizing mechanism is used will be described in detail later. 
     Subsequently, a specific configuration example of the first pressurizing unit  50  will be described.  FIG. 8  is a sectional view which illustrates a specific configuration example of the first pressurizing unit  50 . The first pressurizing unit  50  illustrated in  FIG. 8  is configured so as to pressurize the damper chamber SD which communicates with a buffer chamber by changing a volume of the buffer chamber SV which is provided in the middle of the communicating path  51  which causes the damper chamber SD to communicate with the atmosphere opening port  58 . Specifically, the first pressurizing unit  50  illustrated in  FIG. 8  includes a support body  52  and a sealing body  54 . A recessed portion  522  is formed in the support body  52 , and the sealing body  54  is fixed to the support body  52  so as to close an opening of the recessed portion  522 . The support body  52  is a structure body which is formed of a resin material such as polypropylene (PP) using injection molding, for example. A space which is surrounded with the recessed portion  522  and the sealing body  54  functions as the buffer chamber SV. 
     The sealing body  54  is a member in a thin plate shape (film shape) which is formed of a resin material such as polypropylene, similarly to the support body  52 , for example, and is welded or bonded to the surface of the support body  52 . A portion of the sealing body  54  which is located inside the recessed portion  522  in a planar view is referred to as a movable unit  542  here. A pressure receiving plate  55  is provided on the surface of the movable unit  542  on a side opposite to the support body  52 , and an eccentric cam  56  is arranged so as to face the pressure receiving plate  55 . The eccentric cam  56  is attached to a driving rod  562  which is rotatably driven by being suspended on a direction perpendicular to the W direction in an eccentric manner. 
     The eccentric cam  56  rotates due to the driving rod  562 , and performs an operation of pressing the pressure receiving plate  55  to the support body  52  side. Due to the operation, the movable unit  542  of the sealing body  54  is also displaced in the same direction, the buffer chamber SV is pressurized, and the damper chamber SD which communicates with the buffer chamber is pressurized. In this manner, according to the first pressurizing unit  50  with the configuration which is illustrated in  FIG. 8 , it is possible to pressurize the damper chamber SD by rotating the eccentric cam  56 . In this manner, it is possible to control bending of the flexible film  472  of the damper chamber SD. 
     Subsequently, a specific configuration example of the second pressurizing unit  60  will be described.  FIG. 9  is a sectional view which illustrates a specific configuration example of the second pressurizing unit  60 . As illustrated in  FIG. 9 , the second pressurizing unit  60  includes a liquid pressure-feeding unit  66  which pressure-feeds ink through a pressurizing unit  62 , an on-off valve  64 , a pressure adjusting valve  70 , and the liquid supply flow path  61  in the liquid supply flow path  61  which causes the common liquid chamber SR and the liquid container  14  to communicate. The pressurizing unit  62  pressurizes liquid in the common liquid chamber SR by forcibly pressurizing liquid in the liquid supply flow path  61 . Since the pressurizing unit  62  is similarly configured as that in  FIG. 8 , detailed descriptions will be omitted. However, the configuration of the pressurizing unit  62  is not limited to that which is illustrated in  FIG. 8 . The liquid pressure-feeding unit  66  includes the liquid container  14 , and a pressurizing pump (for example, diaphragm pump)  662  which pressure-feeds ink which is stored in the liquid container  14  to the liquid supply flow path  61 . A check valve  664  is interposed between the liquid container  14  and the pressurizing pump  662  in order to prevent ink from flowing backward to the liquid container  14 . 
     The pressure adjusting valve  70  includes a valve mechanism which causes the liquid pressure-feeding unit  66  on the upstream side and the common liquid chamber SR on the downstream side to communicate according to a pressure change on the downstream side. According to this, when a negative pressure on the downstream side is small, the valve is closed, and the liquid pressure-feeding unit  66  and the common liquid chamber SR enter a sealed state which is a non-communicating state. When ink is consumed in a printing state, and a pressure on the common liquid chamber SR side drops, the valve is open, the liquid pressure-feeding unit  66  and the common liquid chamber SR communicate, and ink is supplied to the common liquid chamber SR. In addition, when the pressure drop is resolved, the valve is closed again, the liquid pressure-feeding unit  66  and the common liquid chamber SR enter the non-communicating state, and supplying of ink is stopped. 
     Since the downstream side of the pressure adjusting valve  70  is shut off when the on-off valve  64  is closed, it is possible to set so that the pressure adjusting function in which a valve is open according to a pressure change on the downstream side is not operated temporarily. In this manner, it is possible to increase pressurizing efficiency by performing forcible pressurizing using the pressurizing unit  62 , after closing the on-off valve  64 . This point will be described in detail later. 
     Here, a specific configuration example of the pressure adjusting valve (self-sealing valve)  70  will be described.  FIG. 10  is a sectional view which illustrates the specific configuration example of the pressure adjusting valve  70  which is illustrated in  FIG. 9 . The pressure adjusting valve  70  illustrated in  FIG. 10  includes a valve unit  71  which is provided in the liquid supply flow path  61 . The valve unit  71  is a valve mechanism which is provided between a first flow path R 1  which communicates with the liquid supply flow path  61  on the liquid container  14  side and a second flow path R 2  which communicates with the liquid supply flow path  61  on the common liquid chamber SR side, and controls on-off (closing-opening) of the first flow path R 1  according to a pressure (negative pressure) in the second flow path R 2 . Specifically, when it is a normal operation state in which a pressure in the second flow path R 2  is in a predetermined range (state in which pressure adjusting function of pressure adjusting valve  70  is operated), the valve unit  71  shuts off the first flow path R 1  and the second flow path R 2 , and for example, when a pressure in the second flow path R 2  drops due to ejecting of ink using the liquid ejecting head  30 , or suctioning of ink from the outside, the valve unit  71  causes the first flow path R 1  and the second flow path R 2  to communicate with each other. In the state in which the first flow path R 1  and the second flow path R 2  communicate with each other, ink which is supplied to the first flow path R 1  from the liquid container  14  through the liquid supply flow path  61  flows in the second flow path R 2  through the valve unit  71 , and is supplied to the liquid ejecting head  30 . That is, the first flow path R 1  is located on the upstream side of the valve unit  71 , and the second flow path R 2  is located on the downstream side of the pressure adjusting valve  70 . 
     The pressure adjusting valve  70  includes a support body  72 , a sealing body  74 , and a sealing body  76 . The sealing body  74  is fixed to a surface on one side of the flat-plate shaped support body  72 , and the sealing body  76  is fixed to a surface on the other side of the support body  72 . A recessed portion  722  in an approximately circular shape in a planar view is formed on the surface of the support body  72  on the sealing body  74  side, and a recessed portion  724  in an approximately circular shape is similarly formed on the surface of the support body  72  on the sealing body  76  side. A space which is surrounded with the recessed portion  722  and the sealing body  74  functions as the first flow path R 1 , and a space which is surrounded with the recessed portion  724  and the sealing body  76  functions as the second flow path R 2 . The first flow path R 1  communicates with the liquid supply flow path  61  (and liquid container  14 ), and the second flow path R 2  communicates with the common liquid chamber SR. 
     The sealing body  76  is a thin plate-shaped member (film shape) which is formed of a resin material such as polypropylene, for example, and is welded or bonded to the surface of the support body  72 . A portion of the sealing body  76  which is located inside the recessed portion  724  in a planar view is referred to as a movable unit  762  here. A pressure receiving plate  78  is provided on the surface of the movable unit  762  on the support body  72  side. The pressure receiving plate  78  is a flat-plate member which is approximately circular, for example. 
     The valve unit  71  includes a valve  82 , a valve seat  84 , a spring S 1 , and a spring S 2 . Schematically, when the valve  82  moves to a positive side and a negative side in the W direction with respect to the valve seat  84 , on-off of the first flow path R 1  (shutting off-communicating between first flow path R 1  and second flow path R 2 ) is switched. That is, when the valve  82  moves to the positive side in the W direction with respect to the valve seat  84 , the first flow path R 1  and the second flow path R 2  are shut off. In contrast to this, when the valve  82  moves to the negative side in the W direction with respect to the valve seat  84 , the first flow path R 1  and the second flow path R 2  are caused to communicate with each other. 
     The valve seat  84  is a portion of the support body  72  which is located between the first flow path R 1  and the second flow path R 2  (base of recessed portion  722  or recessed portion  724 ), and faces the movable unit  762  of the sealing body  76  with an interval. A through hole H which penetrates the support body  72  is formed at approximately a center of the valve seat  84 . The through hole H is a round foramen of which the inner peripheral face is parallel to the W direction. The first flow path R 1  which is located on the upstream side of the valve seat  84 , and the second flow path R 2  which is located on the downstream side of the valve seat  84  communicate with each other through the through hole H of the valve seat  84 . 
     The valve  82  is provided in the first flow path R 1 . The valve  82  is formed of a base portion  822 , a sealing unit  824 , and a valve stem  826 . The base portion  822  is a flat plate-shaped portion which is molded in a circular shape with an outer diameter which exceeds an inner diameter of the through hole H. The valve stem  826  vertically projects from the surface of the base portion  822  in the same axis, and the annular sealing unit  824  which surrounds the valve stem  826  in a planar view is provided on the surface of the base portion  822 . The valve  82  is provided so that the base portion  822  and the sealing unit  824  are located in the first flow path R 1 , in a state in which the valve stem  826  which faces an axis line C in the W direction is inserted into the through hole H of the valve seat  84 . An interval is formed between the inner peripheral face of the through hole H of the valve seat  84  and the outer peripheral face of the valve stem  826 . The spring S 1  urges the valve  82  which is provided between the sealing body  74  and the base portion  822  of the valve  82  to the valve seat  84  side. On the other hand, the spring S 2  is provided between the valve seat  84  and the pressure receiving plate  78  (movable unit  762 ). 
     The sealing unit  824  of the valve  82  is located between the base portion  822  and the valve seat  84 , and functions as a seal which closes the through hole H by being in contact with the valve seat  84 . Specifically, the sealing unit  824  comes into contact with the surface S on the first flow path R 1  side of the valve seat  84  (hereinafter, referred to as “sealing face”). 
     According to the pressure adjusting valve  70  with such a configuration, in a normal operation state in which a pressure in the second flow path R 2  is maintained in a predetermined range, since a periphery edge portion of the sealing unit  824  comes into contact with the sealing face S of the valve seat  84  when the spring S 1  urges the valve  82 , a state in which the valve  82  closes the through hole H of the valve seat  84  (hereinafter, referred to as “closed state”) is maintained as denoted by a one-dot dashed line in  FIG. 10 . That is, the first flow path R 1  and the second flow path R 2  are shut off. In contrast to this, for example, when a pressure in the second flow path R 2  drops due to ejecting of ink or suctioning from the outside, as denoted by a solid line in  FIG. 10 , the movable unit  762  of the sealing body  76  is displaced to the valve seat  84  side, the pressure receiving plate  78  which is provided in the movable unit  762  presses the valve stem  826  of the valve  82  against urging of the spring S 2 . That is, the movable unit  762  functions as a diaphragm which is displaced according to a pressure (negative pressure) in the second flow path R 2 . When the pressure in the second flow path R 2  further drops, as denoted by the solid line in  FIG. 10 , the sealing unit  824  is changed to a state of being separated from the valve seat  84  (hereinafter, referred to as “open state”) when the valve stem  826  is pressed by the movable unit  762  (pressure receiving plate  78 ), the valve  82  moves to the negative side (sealing body  74  side) in the W direction against urging of the spring S 1 . In the open state, the through hole H of the valve seat  84  is open, and the first flow path R 1  and the second flow path R 2  communicate with each other through the through hole H. 
     According to the pressure adjusting valve  70 , in a non-printing state, that is, in a state in which ink is not consumed, the valve unit  71  enters a closed state even when ink is pressure-fed from the liquid pressure-feeding unit  66  on the upstream side of the pressure adjusting valve  70 . In this manner, ink from the liquid pressure-feeding unit  66  is not supplied to the common liquid chamber SR on the downstream side of the pressure adjusting valve  70 . 
     In contrast to this, ink which is temporarily stored in the common liquid chamber SR in a printing state is ejected from a nozzle N through the pressure chamber SC, and when ink is consumed, a pressure drops along with a decrease of ink in the second flow path R 2 , and it becomes a negative pressure in the second flow path R 2 . Due to this, since the movable unit  762  is displaced to the negative side in the W direction in which the valve  82  is pushed down, the valve unit  71  enters an open state, and ink is supplied to the second flow path R 2  from the first flow path R 1 . In this manner, ink from the liquid pressure-feeding unit  66  is supplied to the common liquid chamber SR. In addition, when the negative pressure of the second flow path R 2  is resolved due to flowing in of ink to the second flow path R 2  of the pressure adjusting valve  70 , as denoted by the one-dot dashed line in  FIG. 10 , the movable unit  762  is displaced to a positive side in the W direction, the valve unit  71  enters the closed state again due to returning of the valve  82 , and supplying of ink to the common liquid chamber SR is stopped. 
     In this manner, in a printing operation, the valve unit  71  operates so as to sequentially supply ink to the second flow path R 2  while being slightly opened according to consuming of ink. That is, a pressure change of ink in the second flow path R 2  on the downstream side is limited so as to be in a certain range due to on-off of the valve unit  71 , and is separated from a pressure change of ink in the first flow path R 1  on the upstream side. Accordingly, even when there is a pressure change on the upstream side of the pressure adjusting valve  70 , the downstream side is not influenced by the pressure change. For this reason, supplying of ink from the second flow path R 2  to the common liquid chamber SR is preferably performed. 
     In the normal operation state (non-printing state and printing state) in which a pressure adjusting function using the pressure adjusting valve  70  is operated, since the valve is opened or closed so that ink is automatically replenished only when ink in the common liquid chamber SR is reduced, the downstream side (common liquid chamber SR side) of the pressure adjusting valve  70  is limited so as to be usually in a certain range. 
     However, when ink in the liquid supply flow path  61  is forcibly pressurized using the pressurizing unit  62  of the second pressurizing unit  60  at a time of the pressurizing wiping operation, a pressure in the second flow path R 2  in the pressure adjusting valve  70  which communicate therewith increases. For this reason, since the movable unit  762  moves to a positive side in the W direction as dented by a dashed line in  FIG. 10  while the valve  82  is closed as denoted by the one-dot dashed line in  FIG. 10 , an effect of increasing a pressure using the pressurizing unit  62  of the second pressurizing unit  60  decreases. In addition, there also is a possibility that the sealing body  76  and the support body  72  are separated. 
     In this point, according to the second pressurizing unit  60  illustrated in  FIG. 9 , it is possible to set so that the pressure adjusting function in which a valve is open according to a pressure change on the downstream side is not operated, temporarily, by shutting off the pressure adjusting valve  70  by closing the on-off valve  64  between the pressurizing unit  62  and the pressure adjusting valve  70 . For this reason, it is possible to pressurize ink in the liquid supply flow path  61  on the downstream side using the on-off valve  64 , without being influenced by the pressure adjusting valve  70 , by performing pressurizing using the pressurizing unit  62  after closing the on-off valve  64 . In this manner, it is possible to increase a pressurizing effect using the second pressurizing unit  60 . In addition, it is possible to reduce a possibility that the sealing body  76  and the support body  72  may be separated. In addition, it is possible to cause the pressure adjusting function of the pressure adjusting valve  70  to return by opening the on-off valve  64  when the pressurizing wiping operation is finished. 
     Subsequently, the pressurizing wiping operation which is performed using the pressurizing mechanism in the embodiment will be described.  FIG. 11  is a flowchart for describing the pressurizing wiping operation in the embodiment. The pressurizing wiping operation is executed according to a program using the control device  22 . As illustrated in  FIG. 11 , first, in step S 1 , the control device  22  performs pressurizing of the damper chamber SD by starting a pressurizing operation of the first pressurizing unit  50  in step S 2  after closing the on-off valve  59  between the first pressurizing unit  50  and atmosphere. It is possible to pressurize the damper chamber SD using the first pressurizing unit  50 , after setting the damper chamber SD to a closed space which is shut off from atmosphere by closing the on-off valve  59  in this manner. In this manner, it is possible to increase pressurizing efficiency of the damper chamber SD compared to a case in which the damper chamber SD is pressurized using the first pressurizing unit  50  without being shut off from atmosphere. 
     Subsequently, in step S 3 , the control device  22  forcibly pressurizes ink in the common liquid chamber SR by starting a forcible pressurizing operation of the second pressurizing unit  60 . In this state, in step S 4 , the control device  22  performs wiping of the ejecting face by driving the wiping device  28 . In this manner, it is possible to perform wiping of the ejecting face while causing ink to be oozed out from a nozzle N. In this manner, it is possible to prevent ink or bubble from entering into the nozzle N when wiping the ejecting face. Moreover, it is possible to suppress excessive bending of the flexible film  472  while performing the wiping operation, since the ejecting face is wiped using the wiping device  28  in the middle of pressurizing the damper chamber SD using the first pressurizing unit  50 . 
     When the wiping is finished, in step S 5 , the forcible pressurizing operation using the second pressurizing unit  60  is stopped, and the state returns to the normal operation state (non-printing state or printing state). When the pressurizing unit  62  illustrated in  FIG. 9  is configured similarly to that in  FIG. 8 , it is possible to stop the forcible pressurizing operation using the second pressurizing unit  60  by returning the movable unit  542  of the sealing body  54  to the positive side in the W direction by rotating the eccentric cam  56 . Subsequently, in step S 6 , the control device  22  stops the pressurizing operation of the first pressurizing unit  50  in step S 7 , after opening the on-off valve  59  between the first pressurizing unit  50  and atmosphere. Specifically, the movable unit  542  of the sealing body  54  is returned to the positive side in the W direction by rotating the eccentric cam  56  which is illustrated in  FIG. 8 . In this manner, a pressure in the damper chamber SD is reduced, and returns to atmospheric pressure. 
     Meanwhile, if the on-off valve  59  is not open when pressurizing of the damper chamber SD is finished, a pressure in the damper chamber SD decreases from the time of stopping the pressurizing operation of the first pressurizing unit  50 . For this reason, if water vapor of the damper chamber SD is saturated at a time of pressurizing, when a pressure in the damper chamber SD decreases in a state in which the on-off valve  59  is not open, there is a concern that dew condensation may occur. In this point, according to  FIG. 11 , it is possible to cause water vapor to escape by opening the damper chamber SD to atmosphere before stopping the pressurizing operation of the first pressurizing unit  50 , since the pressurizing operation of the first pressurizing unit  50  is stopped in step S 7  after opening the on-off valve  59  in step S 6 . 
     In this manner, in the pressurizing wiping operation according to the embodiment, it is possible to prevent the flexible film  472  of the damper chamber SD from being excessively bent, since ink in the common liquid chamber SR is forcibly pressurized using the second pressurizing unit  60  in step S 3  after pressurizing the damper chamber SD using the first pressurizing unit  50  in step S 2  which is illustrated in  FIG. 11 . In addition, since it is also possible to set the flexible film  472  to be rarely bent by pressurizing the damper chamber SD using the first pressurizing unit  50 , a pressurizing effect of the common liquid chamber SR can be increased, and a response can be improved. In addition, it is possible to avoid bending of the flexible film  472  toward the damper chamber SD side due to pressurizing of the second pressurizing unit  60 , when finishing pressurizing of the damper chamber SD in steps S 6  and S 7 , by stopping the forcible pressurizing operation of the second pressurizing unit  60  in step S 5 , before steps S 6  and S 7 . 
     In addition, in  FIG. 11 , step S 6  and step S 7  may be reversed. That is, the on-off valve  59  between the first pressurizing unit  50  and atmosphere may be opened, after stopping the pressurizing operation of the first pressurizing unit  50 . If water vapor of the damper chamber SD is saturated, since it is possible to cause the water vapor escape by being exposed to atmosphere, by opening the on-off valve  59 , there is a concern that moisture loss from the common liquid chamber SR through the flexible film  472  may progress that much. In this point, it is possible to finish pressurizing of the damper chamber SD while suppressing escaping of water vapor by being exposed to atmosphere, by opening the on-off valve  59  between the first pressurizing unit  50  and atmosphere after stopping the pressurizing operation of the first pressurizing unit  50 . 
     In addition, in the embodiment, the case in which ink in the common liquid chamber SR is forcibly pressurized using the second pressurizing unit  60  is described; however, it is not limited to this. Since it is possible to suppress bending of the flexible film  472  by pressurizing the damper chamber SD using the first pressurizing unit  50 , it is also possible to forcibly pressurize ink by changing a volume in the common liquid chamber SR using the fact. In this case, the forcible pressurizing operation of the second pressurizing unit  60  may be set so as not to function in the middle of the pressurizing operation of the first pressurizing unit  50 , by providing an on-off function in the second pressurizing unit  60 . 
     For example, when the pressurizing unit  62  has the configuration illustrated in  FIG. 8 , the on-off function of the pressurizing unit  62  may be executed by controlling the eccentric cam  56 . Specifically, when the pressurizing unit  62  is off, a situation in which the sealing body  54  is pressed to the negative side in the W direction using the eccentric cam  56  is taken into consideration. In this manner, it is possible to set so that the sealing body  54  of the pressurizing unit  62  is not displaced even when the common liquid chamber SR is pressurized. In this case, it is preferable that the on-off valve  64  is closed so as not to be influenced by the pressure adjusting valve  70 , as well, in the middle of the pressurizing operation of the first pressurizing unit  50 . In addition, in this manner, when ink in the common liquid chamber SR is pressurized due to the pressurizing operation of the first pressurizing unit  50 , the second pressurizing unit  60  with the forcible pressurizing function may not be provided. In this case, only the liquid pressure-feeding unit  66  and the pressure adjusting valve  70  may be connected to the common liquid chamber SR, in order to perform a normal operation of a non-printing state and a printing state. 
     Modification Example 
     Each embodiment which is exemplified above can be variously modified. Specific modification examples will be exemplified below. Two or more modes which are arbitrarily selected from the following examples can be appropriately combined as long as they are not contradictory to each other. 
     (1) In the embodiment, the case in which, when performing a pressurizing wiping operation, or the like, the pressurizing unit  62  illustrated in  FIG. 9  is provided as the second pressurizing unit  60  which pressurizes ink in the common liquid chamber SR, and ink is forcibly pressurized using the pressurizing unit  62  is exemplified; however, it is not limited to this. As the second pressurizing unit  60 , a configuration in which the inside of the common liquid chamber SR is forcibly pressurized through ink which is pressurized using a pressurizing pump  662  of the liquid pressure-feeding unit  66  without using the pressurizing unit  62  may be adopted. For example, as illustrated in  FIG. 12 , a configuration in which ink in the common liquid chamber SR is pressurized by forcibly opening the pressure adjusting valve  70  by providing a forcible valve opening mechanism  86  in the pressure adjusting valve  70  may be adopted. 
     A specific configuration example of the pressure adjusting valve  70  which includes such a forcible valve opening mechanism  86  is illustrated in  FIG. 13 . The pressure adjusting valve  70  illustrated in  FIG. 13  is obtained by providing an operation eccentric cam mechanism which opens the valve  82  by pressing down the valve by forcibly displacing the sealing body  76 , as the forcible valve opening mechanism  86 , in the pressure adjusting valve  70  illustrated in  FIG. 10 . The eccentric cam mechanism here is configured similarly to that which is illustrated in  FIG. 8 , for example. Specifically, an eccentric cam  862  is arranged so as to face the pressure receiving plate  78  of the sealing body  76 . The eccentric cam  862  is attached to a driving rod  864  which is rotatably driven, by being suspended on a direction perpendicular to the W direction in an eccentric manner. 
     The eccentric cam  862  rotates using the driving rod  864 , and performs an operation of pressing the pressure receiving plate  78  to the first flow path R 1  side. Due to the operation, the movable unit  762  of the sealing body  76  is also displaced in the same direction, and the valve  82  enters an open state by being pressed down to the negative side in the W direction (state denoted by solid line in  FIG. 13 ). In this manner, it is possible to cause the liquid supply flow path  61  between the liquid pressure-feeding unit  66  and the common liquid chamber SR to be communicated forcibly, regardless of a pressure of the pressure adjusting valve  70  on the downstream side. In this manner, it is possible to forcibly pressurize the inside of the common liquid chamber SR through ink which is pressurized by the pressurizing pump  662  of the liquid pressure-feeding unit  66 . In addition, the movable unit  762  of the sealing body  76  is returned to the positive side in the W direction by separating the eccentric cam  862  from the movable unit  762  of the sealing body  76 , as denoted by a one-dot dashed line in  FIG. 13 , by rotating the eccentric cam  862 . In this manner, a position of the valve  82  returns to the positive side in the W direction, and it is possible to return the pressure adjusting function of the pressure adjusting valve  70  which configures the second pressurizing unit  60 . 
     The forcible valve opening mechanism  86  may have any configuration without being limited to the eccentric cam mechanism which is illustrated in  FIG. 13 , as long as it is possible to open the valve  82  by pressing down the valve, by forcibly displacing the sealing body  76 . For example, as the forcible valve opening mechanism  86 , it is also possible to use a link mechanism, an electromagnetic plunger, an actuator which is driven using a pressure of air, or the like. 
     (2) The configuration of the second pressurizing unit  60  in which ink in the common liquid chamber SR can be pressurized using the pressurizing pump  662  is not limited to the above described configurations which are illustrated in  FIGS. 12 and 13 . For example, as illustrated in  FIG. 14 , it may be a configuration in which an on-off valve  614  is provided in a bypass flow path  612 , by providing the bypass flow path  612  which bypasses the pressure adjusting valve  70  in the liquid supply flow path  61 . In this manner, it is possible to cause the liquid supply flow path  61  between the liquid pressure-feeding unit  66  and the common liquid chamber SR to be forcibly communicated not through the pressure adjusting valve  70  by opening the on-off valve  614  using the second pressurizing unit  60 . In this manner, it is also possible to forcibly pressurize the inside of the common liquid chamber SR through ink which is pressurized by the pressurizing pump  662  of the liquid pressure-feeding unit  66 . 
     (3) In each embodiment which is described above, a line head in which the plurality of liquid ejecting heads  30  are arranged over the entire width of the medium  12  is exemplified; however, it is also possible to apply the invention to a serial head in which a carriage in which a liquid ejecting head  30  is mounted is repeatedly reciprocated along the X direction. In addition, a method of ejecting ink using the liquid ejecting unit  32  is not limited to the above described method (piezoelectric method) in which a piezoelectric elements is used. The invention can be applied to a liquid ejecting head in which a method of using a heating element which changes a pressure in a pressure chamber by generating bubbles in the pressure chamber using heating (thermal method) is adopted, for example. 
     (4) The printing apparatus  10  which is exemplified in each of the embodiments can be adopted to various devices such as a fax machine, a copy machine, or the like, in addition to an exclusive device for printing. Originally, a use of the liquid ejecting apparatus in the invention is not limited to printing. For example, a liquid ejecting apparatus which ejects a solution of a coloring material is used as a manufacturing device which forms a color filter of a liquid crystal display device. In addition, a liquid ejecting apparatus which ejects a solution of a conductive material is used as a manufacturing device which forms wiring or an electrode of a wiring substrate.