Patent Publication Number: US-11662684-B2

Title: Cartridge couplable to printing apparatus and having movable driver coupler

Description:
BACKGROUND 
     A printing apparatus performs printing. A printing apparatus may be coupled with a cartridge such as a printing cartridge that contains and supplies toner to be used by the printing apparatus to perform printing. When the toner contained in the container is exhausted, the printing cartridge may be decoupled and removed from the printing apparatus, and a new printing cartridge may be inserted or coupled to the printing apparatus. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIGS.  1 A and  1 B  are diagrams of an example of a printing apparatus. 
         FIG.  2    is a diagram of the manner by which electrophotographic printing can be accomplished, according to an example. 
         FIGS.  3 A and  3 B  are structural diagrams of a cartridge couplable to the printing apparatus illustrated in  FIG.  1 B  according to an example. 
         FIG.  4    is a diagram representing arrangements of a driver coupling mechanism according to an example. 
         FIG.  5    illustrates a perspective view of the driver coupling mechanism according to an example. 
         FIGS.  6 A and  6 B  illustrate perspective views of the driver coupling mechanism according to an example. 
         FIGS.  7 A- 7 G  illustrate coupling/decoupling processes of the driver coupler to the power driver according to an example. 
         FIGS.  8 A and  8 B  illustrate a decoupling process by detaching the first power transfer part  531  from the second transfer part according to an example. 
         FIG.  9    illustrates a cartridge including a driver coupling mechanism, where the drum is coupled to the driver coupling mechanism to move along with the driver coupler, according to an example. 
         FIG.  10    indicates the flow diagram of a control system regarding a cartridge couplable to a printing device, according to an example. 
     
    
    
     DETAILED DESCRIPTION 
     In this disclosure, when the specification states that one constituent element is “connected to” another constituent element, it includes a case in which the two constituent elements are connected to each other with another constituent element intervened therebetween as well as a case in which the two constituent elements are directly connected to each other. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. Expressions such as “at least one of,” when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list. 
     Further, the expression “printing apparatus” as used herein includes an apparatus that processes printing data generated at a terminal such as a computer communicating through a wired connection or wirelessly, which may be a computer for personal and/or business use, a remote server communicating data across a network or the internet, and/or a wireless mobile device such as a smartphone or tablet, to perform printing. Examples of the printing apparatus may include particulate-based printing apparatuses. 
     As an example of a printing apparatus, electrophotographic printing apparatuses are used to produce hardcopy documents from electronic data. Toner-based printing apparatuses are an example. In an electrophotographic printing apparatus, a pattern of electric charges is formed corresponding to the image to be printed. Charged toner is then attracted to the image pattern to develop the image. The image can then be transferred to a print medium, such as a sheet of paper. The toner can then be securely attached to the print medium and delivered as a hardcopy document. 
     According to an example,  FIG.  1 A  is a perspective view of the exterior of a printing apparatus  1000 . According to an example,  FIG.  1 B  is a perspective view of the exterior of a printing apparatus  1000  with a door  3  being open to expose a cartridge receiving part  20  of the printing apparatus  1000  to receive cartridge  2 , such as a printing cartridge  2 . According to an example, the printing apparatus  1000  may include a body  1  without a printing cartridge  2  or a body  1  and a printing cartridge  2  that is attachable to/detachable from the body  1 , for example, to and from the cartridge receiving part  20 . According to an example, more than one cartridge  2 , such as cartridges containing toners of different colors, may be couplable to the plurality of cartridge receiving parts  20 . As illustrated in  FIGS.  1 A and  1 B , a door  3  may be provided in the body  1 . The door  3  opens or closes an opening of the body  1  and may cover a portion of the body  1 . For example, the door  3  may cover the cartridge receiving part  20  to which a cartridge  2  such as a toner cartridge  2  may be coupled to or inserted into. While the door  3  opening and closing a front portion of the body  1  is illustrated in  FIG.  1 A , different arrangements of the door  3  may be implemented. For example, a door  3  opening and closing a portion of the body  1 , such as a side portion or a front portion of the body  1 , may be included as needed. The cartridge  2  may be coupled to or removed from the body  1  through an opening by the door  3 . According to an example, the printing apparatus  1000  may include a plurality of cartridge receiving parts  20 , to receive cartridges for different operations, functions, or purposes. For example, the plurality of cartridge receiving parts  20  may be arranged to receive a plurality of toner cartridges respectively including toners of different colors. 
     An example of a printing apparatus may include some or all of the features described in this disclosure. 
     In a toner-based printing apparatus, for example, uniform coverage of charges is initially formed on a photo-conductor drum. The light such as a laser and LED is scanned over the surface of the cylindrical photosensitive drum according to the image to be printed. Where the light illuminates the surface of the photo-conductor drum, a partially discharged area is formed. These charged and discharged areas together compose a pattern corresponding to the image to be printed. 
     Charged toner is then applied to the photosensitive drum. The charged toner is then driven by electric fields in the latent electrostatic image to the discharged areas on the drum, thereby developing the image to be printed. The toner image can then be transferred to a print medium, such as a sheet of paper, to produce the desired hardcopy document. 
     According to an example,  FIG.  2    is a diagram of the manner by which an electrophotographic printing can be accomplished, according to an example. 
     According to an example, at least a part of this electrophotographic mechanism may include in a printing apparatus  1000 . The electrophotographic printing mechanism may include a photosensitive drum  108  such as photoconductor drum  108 , which is made from highly photoconductive material that is discharged by light photons. The photosensitive drum  108  may also be referred to as a photoreceptor drum  108 , a photoconductor  108 , an optical photoconductor  108 , or an organic photoconductor  108 . Initially, the photosensitive drum  108  is given a total positive charge via a charge roller  110 . The charge roller  110  is in contact with the drum  108  during image formation on the media  120  for precise alignment of the image to be formed on the media  120 . At other times, during non-use, the charge roller  110  may be separated from the photosensitive drum  108 , as will be described. 
     As the photosensitive drum  108  revolves, the printing mechanism shines a light beam such as a laser beam or a LED light beam emanating from the light beam source  102 , and reflected by the reflector  104 , onto the surface  106  of the photosensitive drum  108  to discharge certain points in accordance with an image. In this way, the light beam draws, or scans, the image to be printed as a pattern of electrical charges, which can be referred to as an electrostatic image. The photosensitive drum  108  may rotate counter-clockwise, as indicated by the arrow  112 . After the pattern as the electrostatic image has been set, the printing mechanism coats the drum  108  with toner, which is a fine powder. For example, the toner also may have a positive charge, so the toner clings to the discharged areas of the drum  108 , but not to the positively charged background. 
     The toner is dispensed by a developer roller  114  that rotates clockwise, as indicated by the arrow  116 , against the photosensitive drum  108 , after having rotated through the toner hopper  118  to pick up toner. The developer roller  114  is also in contact with the photosensitive drum  108  during image formation on the media  120  for alignment of the image to be formed on the media  120 . At other times, during non-use, the developer roller  114  may be separated from the photosensitive drum  108 . With the powder pattern affixed, the drum  108  rolls over a sheet of media  120 , which moves in the direction indicated by the arrow  122 . Before the media  120  rolls under the drum  108 , it is given a negative charge by the transfer roller  124 . This charge is stronger than the charge of the electrostatic image, so the media  120  pulls the powder away from the drum  108 . Since it is moving at the same speed as the drum  108 , the media  120  picks up the image pattern exactly. 
     The printing mechanism  100  finally passes the media  120  through the fuser  130 , which can be a pair of heated rollers  132  and  134  that move in the opposite direction. As the media  120  passes through these heated rollers  132  and  134 , the loose toner powder melts, fusing with the fibers in the media  120 . The fuser  130  rolls the media  120  to an output tray, providing a printed page. After depositing the toner on the media  120 , the drum  108  passes the discharge lamp.  128 , which is a bright light. This exposes the entire photoreceptor surface of the drum  108 , erasing its electrical image, so that the process is ready to be repeated. 
     One or more components of the electrophotographic-printing mechanism as illustrated in  FIG.  2    may be encased within a removable cartridge  2  that can be replaced. A variety of cartridge structures may be included in the cartridge  2 . For example, the removable cartridge  2  can be a toner cartridge  2  containing toner and replaceable when the toner supply of the toner cartridge  2  has been depleted. For example, the removable cartridge  2  may include a drum  10 . According to an example, the drum  10  may be the photosensitive drum  108 , the developer roller  114 , and the charge roller  110 , or any roller usable to perform a function for the printing apparatus  1000  or the cartridge  2 . According to an example, the toner hopper  118  or a corresponding component thereto, the photosensitive drum  108 , the developer roller  114 , and the charge roller  110  may all be encased within a removable toner cartridge  2 . As such, when the toner supply present in the toner hopper  118  or the corresponding component thereto has been depleted, the toner cartridge  2  is replaced with a new, fresh toner cartridge  2  to continue forming images on media. According to an example, the cartridge  2  may be a printing cartridge  2  that includes a developing portion in which the photosensitive drum  108  and the developing roller  114  are mounted, a waste container receiving waste toner removed from the photosensitive drum  108 , and a toner containing portion connected to the developing portion and containing toner. 
     According to an example, a variety of cartridge  2  structures for a printing apparatus may be implemented. For example,  FIGS.  3 A and  3 B  are schematic perspective views of a cartridge  2  couplable to a cartridge receiving part  20  of the printing apparatus illustrated in  FIG.  1 B , according to an example. 
     Referring  FIG.  3 A , the cartridge  2  may include a drum  10 , which could be the photosensitive drum  108 , the developer roller  114 , the charge roller  110 , or any roller usable to perform a function for the printing apparatus  1000  or the cartridge  2 , or any combination of rollers thereof. For example, the cartridge  2  may include the photosensitive drum  108 . The drum  10  may be rotated by receiving power, such as a rotational force form of power, from a power supply  400  of the printing apparatus  1000  through a driver coupling mechanism  50  when the cartridge  2  is mounted on the body  1  of the printing apparatus as shown in  FIG.  1 B . The power to be received may be in a variety of forms, including different forms of mechanical power and electrical power. 
     According to an example, the cartridge  2  may include a housing  30  to house cartridge structures. For example, the housing  30  may include the drum  10 . The housing  30  may have an opening through which a portion of an outer circumference of the drum  10  is exposed outside the housing  30 . According to an example, the cartridge  2  may include a cartridge cover  40  to cover at least a portion of the opening of the housing  30  and, hence, cover at least a portion of the outer circumference of the drum  10  exposed outside the housing  30 . 
     Referring  FIGS.  3 A and  3 B , the cartridge cover  40  may be movable to open at least a portion of the opening of the cartridge  2 , such that at least a portion of the drum  10  is exposed outside the housing  30 . The cartridge cover  40  may be movable to close at least a portion of the opening of the cartridge  2 , such that the exposed portion of the drum  10  is covered by the cartridge cover  40 . The cartridge cover  40  may move to an open position to open at least a portion of the opening of the cartridge  2 , as the cartridge  2  is coupled to the cartridge receiving part  20 , for example, by being inserted into the cartridge receiving part  20 . As the cartridge  2  is moved to be decoupled from the cartridge receiving part  20 , for example, by being pulled out from the cartridge receiving part  20 , the cartridge cover  40  may move to close at least a portion of the opening of the cartridge  2 . The cartridge  2  may include a cover lever  45  coupled to the cartridge cover  40 , to move the cartridge cover  40  to open and close at least a portion of the opening of the cartridge  2 . For example, the cover lever  45  may be attached through the external surface of the housing  30 . The cover lever  45  may be rotated around the center of rotation to move the cartridge cover  40 , which may be the portion of the housing  30  the cover lever  45  is attached to. 
     According to an example, a variety of driver coupling mechanism  50  to transfer power to drive the cartridge  2  may be implemented. For example,  FIG.  4    is a diagram representing arrangements of the driver coupling mechanism  50  according to an example. 
     According to an example, referring  FIG.  4   , the driver coupling mechanism  50  may include a driver coupler  510  to be coupled to, contact, and/or engaged with a power driver  410  of the printing apparatus  1000  to receive power, to drive the cartridge  2  and a power transfer member  530  to receive and/or transfer power to move the driver coupler  510 . According to an example, power received and/or transferred by the power transfer member  530  to move the driver coupler  510  may or may not be from the printing apparatus  1000 , such as a component or a part of the printing apparatus  1000 . 
     According to an example, a cartridge  2  couplable to a printing apparatus  1000  may include, as the driver coupling mechanism  50 , a driver coupler  510  movable to a first position where the driver coupler  510  is engaged with a power driver  410  of the printing apparatus  1000  to receive power to operate the cartridge  2  and a second position where the driver coupler  510  is disengaged from the power driver  410 . According to an example, the cartridge  2  may include a power transfer member  530  to receive power to move the driver coupler  510  from the second position to the first position. For example, the power transfer member  530  may be a torque receiver to receive torque to move the driver coupler  510  from the second position to the first position. According to an example, the power transfer member  530  may receive and/or transfer power from another moving part of the cartridge  2  or the printing apparatus  1000 . According to an example, the power transfer member  530  may receive and/or transfer power of moving another moving part of the cartridge  2  or the printing apparatus  1000 . For example, the power transfer member  530  may receive and/or transfer power or torque of moving the cartridge cover  40 . According to an example, the power transfer member  530  may receive and/or transfer power from the printing apparatus  1000 , such as a component or a part of the printing apparatus  1000 . 
     According to an example, a printing apparatus  1000  may include a cartridge receiving part  20  to which a cartridge  2  couplable to. The cartridge  2  may include, as the driver coupling mechanism  50 , a driver coupler  510  movable to a first position where the driver coupler  510  is engaged with a power driver  410  of the printing apparatus  1000  to receive power to operate the cartridge  2  a second position where the driver coupler  510  is disengaged from the power driver  410 . According to an example, the cartridge  2  may include a power transfer member  530  to receive power to move the driver coupler  510  from the second position to the first position. For example, the power transfer member  530  may be a torque receiver to receive torque to move the driver coupler  510  from the second position to the first position. According to an example, the power transfer member  530  may receive and/or transfer power from another moving part of the cartridge  2  or the printing apparatus  1000 . According to an example, the power transfer member  530  may receive and/or transfer power of moving another moving part of the cartridge  2  or the printing apparatus  1000 . For example, the power transfer member  530  may receive and/or transfer power or torque of moving the cartridge cover  40 . 
     According to an example, a cartridge  2  couplable to a printing apparatus  1000  may include a driver coupler  510  movable to a first position where the driver coupler  510  is engaged with a power driver  410  of the printing apparatus  1000  to receive first power from/through the power driver  410  and a second position where the driver coupler  510  is disengaged from the power driver  410 . According to an example, the cartridge  2  may include a power transfer member  530  to receive second power other than the first power to move the driver coupler  510  from the second position to the first position. 
     According to an example, a cartridge  2  couplable to a printing apparatus  1000  may include a driver coupler  510  movable to a first position where the driver coupler  510  is engaged with a power driver  410  of the printing apparatus  1000  to receive first power from the power driver  410  and a second position where the driver coupler  510  is disengaged from the power driver  410 . According to an example, the cartridge  2  may include a power transfer member  530  to receive power to move the driver coupler  510  from the second position to the first position while the driver coupler  510  moves. 
     According to an example, a cartridge  2  couplable to a printing apparatus  1000  may include a driver coupler  510  movable to a first position where the driver coupler  510  is engaged with a power driver  410  of the printing apparatus to receive first power from the power driver  410  and a second position where the driver coupler  510  is disengaged from the power driver  410 . According to an example, the cartridge  2  may include a power transfer member  530  or its part movable in a first direction to move the driver coupler  510 , while the driver coupler  510  moves from the second position to the first position in a second direction different from the first direction. 
     According to an example, a cartridge  2  couplable to a printing apparatus  1000  may include a driver coupler  510  movable to a first position where the driver coupler  510  is engaged with a power driver  410  of the printing apparatus to receive first power from the power driver  410  and a second position where the driver coupler  510  is disengaged from the power driver  410 . According to an example, the cartridge  2  may include a power transfer member  530  to receive power to move in a first direction to move the driver coupler  510 , while the driver coupler  510  moves from the second position to the first position in a second direction different from the first direction. 
     According to an example, a cartridge  2  couplable to a printing apparatus  1000  may include a driver coupler  510  movable to a first position where the driver coupler  510  is engaged with a power driver  410  of the printing apparatus to receive first power from the power driver  410  and a second position where the driver coupler  510  is disengaged from the power driver  410 . According to an example, the cartridge  2  may include a power transfer member  530  including a power transfer part  531  to receive power to move in a first direction to move the driver coupler  510 , while the driver coupler  510  moves from the second position to the first position in a second direction different from the first direction. The power transfer part  531  may receive the power to rotate in the first direction to move the driver coupler  510  in the second direction. 
     According to an example, a cartridge  2  couplable to a printing apparatus  1000  may include a driver coupler  510  movable in an engaging direction toward an engaging position to be engaged with a power driver of the printing apparatus to drive the cartridge  2  and a power transfer member  530  to change a direction of force to the engaging direction, to move the driver coupler  510  in the engaging direction toward the engaging position. 
     According to an example, a cartridge  2  couplable to a printing apparatus  1000  may include a driver coupler  510  movable in a first direction toward an engaging position to engage with a power driver  410  of the printing apparatus  1000  to drive the cartridge  2 , and a power transfer member  530  including a power transfer part  531  to cause the driver coupler  510  to move in the first direction toward the engaging position, as the power transfer part  531  moves in a second direction different from the first direction. 
     According to an example, a cartridge  2  couplable to a printing apparatus  1000  may include a driver coupler  510  movable in a first direction toward an engaging position to engage with a power driver of the printing apparatus to drive the cartridge  2 . The cartridge  2  may include a power transfer member  530  including a power transfer part  531  to transfer power moving the driver coupler  510  in the first direction toward the engaging position, as the power transfer part  531  moves in a second direction different from the first direction. According to an example, the power transfer part  531  may be to rotate in the second direction by receiving torque. 
     According to an example, a printing apparatus  1000  may include a cartridge receiving part  20  to which a cartridge  2  according to an example is couplable to. 
     According to an example, a variety of mechanical structures can be implemented for the driver coupling mechanism  50  as a power transfer mechanism  50  including the driver coupler  510  and the power transfer member  530 . For example, as a driver coupler  510  (also can be as a drive coupling member  510 , a force receiving member  510 , a coupler  510 , or a mechanical coupling member or interface  510 ), a variety of structures can be implemented, such as a dongle gear-based coupling or mating structure, to connect a power source  410 , a power driver  410 , a driving mechanism  410 , an engine  410  of the printing apparatus  1000 . For example, as the power transfer member  530 , a variety of structures to transfer power can be implemented, such as a mechanical structure to receive rotational force or convert rotational movements to a movement of the driver coupler  510 , a crank or piston system based structure, a rack or a rack having an extended length. According to an example, the power transfer member  530  may include a part that moves in a direction different from the direction the driver coupler  510  is to move. 
     For example,  FIG.  5    illustrates a perspective view of the driver coupling mechanism  50  according to an example. 
     Referring  FIG.  5   , the driver coupling mechanism  50  may include a driver coupler  510  or a driver coupling assembly  510 . The driver coupling mechanism  50  may include a cartridge power interface  11  or a cartridge drive interface  11 . The cartridge power interface  11  or a cartridge drive interface  11  may receive power from the printing apparatus  1000  to drive the cartridge  2 . For example, the cartridge power interface  11  or the cartridge drive interface  11  may receive power and transfer power to a gear and/or a roller in the cartridge  2 . For example, the cartridge power interface  11  or the cartridge drive interface  11  may receive power and transfer the power to the drum  10 , such as a photosensitive drum. According to an example, the cartridge power interface  11  or the cartridge drive interface  11  may receive power through the driver coupler  510 . For example, the cartridge power interface  11  or a cartridge drive interface  11  may receive power from the driver coupler  510  engaged with the power driver  410 . A variety of cartridge power interface  11  structures may be implemented, such as a gear, a disc and a mechanical connector. According to an example, the driver coupling mechanism  50  may include a power transfer member  530  including a first power transfer part  531  and a second power transfer part  532 . According to an example, the first power transfer part  531  and the second power transfer part  532  may not be driven by the power being received and transferred by the cartridge power interface  11 . For example, while the driver coupler  510  engages with the power driver  410  and the power driver  410  transfers power such as torque or rotational power, and/or while the cartridge power interface  11  transfers power such as torque or rotational power, the first power transfer part  531  and the second power transfer part  532  may not receive, driven, or rotated by the power being received through the power driver  410 , the driver coupler  410  or the cartridge power interface  11 . According to an example, the first power transfer part  531  may be a worm gear-based structure  531 . For example, the first power transfer part  531  may include a rotatable worm gear  5311 . The second power transfer part  532  may include a rack  532  or gear rack-based structure  532 . According to an example, power in the form of rotational power may be delivered to and received by the worm gear assembly  530  as shown in  FIG.  5   . As the worm gear  5311  rotates, the direction of the movement may be translated as or converted to a forward or backward movement of the rack  532 . Based on the movement of the rack  532 , the driver coupler  510  or the driver coupling assembly  510  may be connected or coupled to the rack  532 , and move along with the rack  532  to move, for example, in a forward or backward direction. In other words, power received by the worm gear assembly  530  in the form of a rotational movement is converted to a different direction by the worm gear-rack connection, to move the driver coupler  510  according to the different direction. 
     According to an example,  FIGS.  6 A and  6 B  illustrate perspective views of the driver coupling mechanism  50  according to an example. 
     Referring  FIGS.  6 A and  6 B , the driver coupling mechanism  50  may include an elastic member  560 , such as a mechanical spring. According to an example, the elastic member may exert the elastic force to push the driver coupler  510  toward a releasing or disengaging direction of the driver coupler  510  that is away from the power driver  410 . For example, the elastic member  560  may provide an elastic force to move the driver coupler  510  to be disengaged or decoupled from the power driver when the power transfer member  530  moves the driver coupler  510  toward the disengaging direction, or when the first power transfer part  531  is detached from the second power transfer part  532 . 
     According to an example, a cartridge  2  may include a rotatable drum  10  and a cartridge cover  40  movable to a cover position to cover at least a portion of the rotatable drum  10  and an uncover position to uncover at least the portion of the rotatable drum  10 . According to an example, the power transfer part  531  may move in the second direction to transfer the power from the cartridge cover  40  moving from the cover position to the uncover position. 
     According to an example,  FIGS.  7 A- 7 G  illustrate a coupling/decoupling process of the driver coupler  510  to the power driver. 
     Referring  FIG.  7 A , before the cartridge  2  is inserted into the cartridge receiving part  20  of the printing apparatus  1000 , the driver coupler  510  is retracted from a first position to be engaged with the power driver  410  and, for example, may be at a second position or may be at a position further retracted from the second position. According to an example, as the cartridge  2  is being inserted into the cartridge receiving part  20 , the power transfer member  530  may not move the driver coupler  510 . According to an example, as the cartridge  2  is being inserted into the cartridge receiving part  20 , the power transfer member  530  may move the driver coupler  510 . For example, when the cartridge  2  is inserted into the cartridge receiving part  20 , the driver coupler  510  is aligned with the power driver  410 , and the power driver is retracted from a first position to be engaged with the power driver  410  and positioned to be disengaged with the power driver  410 , for example, at the second position, and a distance or a gap between the power driver  410  and the driver coupler  510  sufficiently large enough for the cartridge  2  to not interfere with the power driver  410 . 
     Again, according to an example, as the cartridge  2  is being inserted into the cartridge receiving part  20 , the power transfer member  530  may move the driver coupler  510 . According to an example, the power transfer member  530  also may not move the driver coupler  510 , such that the driver coupler  510  may move to engage with the power driver  410  after the cartridge  2  is inserted into the cartridge receiving part  20 . 
     According to an example, referring  FIGS.  7 A- 7 C , as the cartridge  2  is inserted along the vector V 1 , the driver coupling mechanism  50 , such as a worm gear assembly as shown in  FIGS.  7 A- 7 G , may move the driver coupler  510  in a first direction to a first position to be engaged with the power driver  410 , for example, where the driver coupler  510  is being coupled to or contact the power driver  410 . According to an example, the cartridge cover  40  moving from the position as shown in  FIG.  3 A  to the position as shown in  FIG.  3 B  may transfer torque T 1 - 1  to the worm gear assembly  530 . Referring  FIG.  7 C , the worm gear assembly  530  may move the driver coupler  510  to the first position by actuating the rack distance X 1  and eliminating the Gap shown in  FIG.  7 B . 
     Referring  FIG.  7 D , with the Gap shown in  FIG.  7 B  closed, the power driver  410  engaged with the driver coupler  510  drive the cartridge  2 , for example by transferring power in a form of rotation or rotation power T 2 . For example, the power driver  410  engaged with the driver coupler  510  may rotate in a direction indicated by the arrows in  FIG.  7 D , and the cartridge power interface  11  or a cartridge drive interface  11  may receive the rotation power T 2  to be rotated to driver the cartridge  2 . According to an example, the first power transfer part  531  and the second power transfer part  532  may not be driven by the power being received and transferred by the cartridge power interface  11 . According to an example, other forms of power transfer other than a form of rotation may be implemented. For example, the power can be delivered in other mechanical forms such as crank-based structure, or electrical form of power may be transferred to drive the cartridge  2 . 
     According to an example, when the cartridge  2  is removed, as the cartridge  2  is being removed or pulled out of the cartridge receiving part  20 , the power transfer member  530  may move the driver coupler  510 , for example, to be disengaged from the power driver  410 . According to an example, before the cartridge  2  is being removed or pulled out of the cartridge receiving part  20 , the power transfer member  530  may move the driver coupler  510  to be disengaged from the power driver  410 . 
     According to an example, referring  FIGS.  7 E,  7 F and  7 G , as the cartridge  2  is decoupled and removed along the vector V 2 , the worm gear assembly  530  may move the driver coupler  510  in a disengaging direction from the first position to be disengaged with the power driver  410 , for example, where the driver coupler  510  is being decoupled from the power driver  410 . According to an example, the cartridge cover  40  moving from the position as shown in  FIG.  3 B  to the position as shown in  FIG.  3 A  may transfer the torque T 1 - 2  in a reverse direction to torque T 1 - 1  to the worm gear assembly  530 . Referring  FIGS.  7 E,  7 F, and  7 G , the worm gear assembly  530  may move the driver coupler  510  away from the first position by actuating the rack distance X 1  backward and recreating the Gap shown in  FIG.  7 F , uncoupling the driver coupler  510  from the power driver  410 . For example, as the cartridge  2  is removed along vector V 2 , torque T 1 - 2  is applied to the worm gear assembly  530  from a movement of the cartridge cover  40 . 
     According to an example, an elastic force from the elastic member  560  may further aid the decoupling process by reintroducing the gap as shown in  FIG.  7 F . 
     According to an example, when the driver coupler  510  has moved to the engaging position, the driver coupler  510  may move away from the engaging position, without receiving any power transferred through the power transfer member  530 . For example,  FIGS.  8 A and  8 B  illustrate a decoupling process by detaching the first power transfer part  531  from the second transfer part. For example, when the door  3  of the printing apparatus, such as the door shown on  FIGS.  1 A and  1 B , is opened, a lever or a mechanical structure connected to the door may be released or moved or manually moved and may push the first power transfer part  531  away from the second power transfer part  532 , such that driver coupler  510  is released from the first power transfer part and moved to be separated from and/or disengage from the power driver  410 . According to an example, an elastic member may be provided to provide an elastic force to move the driver coupler  510  away from the engaging position. For example, referring  FIGS.  8 A and  8 B , the elastic force by the elastic member  560  may push the driver coupling mechanism  50  away from the engine drive mechanism. 
     According to an example, a cartridge  2  couplable to a printing apparatus  1000  may include a rotatable drum  10 , a driver coupler  510  movable to a first position where the driver coupler  510  is engaged with a power driver of the printing apparatus to drive the cartridge  2  and a second position where the driver coupler  510  is disengaged from the power driver  410 . According to an example, the rotatable drum  10  may be movable along with the driver coupler  510  and movable to a first drum position as the driver coupler  510  moves to the first position and a second drum position as the driver coupler  510  moves to the second position. 
     According to an example,  FIG.  9    illustrates a cartridge  2  including a driver coupling mechanism  50 , where the drum  10  is coupled to the driver coupling mechanism  50  to move along with the driver coupler  510 . According to an example, the rotatable drum  10  may move along with the driver coupler  510  as the driver coupler  510  moves to the engaging position. According to an example, a cartridge  2  couplable to a printing apparatus  1000  may include a rotatable drum, and a driver coupler  510  movable to a first position where the driver coupler  510  is engaged with a power driver of the printing apparatus to drive the cartridge and a second position where the driver coupler  510  is disengaged from the power driver. In this case, the rotatable drum may movable along with the driver coupler  510  and movable to a first drum position as the driver coupler  510  moves to the first position and a second drum position as the driver coupler  510  moves to the second position. A power transfer member  530  may be provided to transfer power to move the driver coupler  510  from the second position to the first position. According to an example, the cartridge power interface  11  or the cartridge drive interface  11  may be coupled to or connected to the drum  10 , to enable the drum to be movable along with the cartridge power interface  11  or the cartridge drive interface  11 , or the driver coupler  510 . 
     According to an example, the printing apparatus  1000  may be controlled to output information regarding the driver coupler  510  being engaged with the power driver  410  or disengaged with the power driver  410 . According to an example, the printing apparatus  1000  may include a controller  300  to control to output information regarding the driver coupler  510  being engaged with the power driver  410  or disengaged with the power driver  410 . For example, a message may be presented on a screen of the user interface  1010  regarding the status of alignment or separation of the driver coupler  510  and the power driver  410 , or based on the position or coupling status of the cartridge  2  to the printing apparatus  1000 , or a light indication may be provided. Further the output may be in any form of feedback presented through the user interface  1010 , or a sound generated by the user interface  1010  or the output device  1020  including a speaker, which may also provide a user information regarding the coupling status or the cartridge coupling status of the separation of the cartridge  2  from the cartridge receiving part  20 . The user interface  1010  and output device  1020  may be combined as a single device where the user interface  1010  includes the output device  1020  or vice versa. 
     While various examples have been described with reference to the drawings, it will be understood that various changes in form and details may be made therein without departing from the spirit and scope as defined by the following claims.