Patent Publication Number: US-2023138063-A1

Title: Waste toner storage structure detachable from cartridge

Description:
BACKGROUND 
     An image forming apparatus may refer to a device that generates, prints, receives, and transmits image data. For example, the image forming apparatus may include a printer, a scanner, a copier, a fax machine, and a multi-function printer implemented by integrating a plurality of functions of such devices. 
     Such an image forming apparatus may include a toner cartridge to form a toner image on a print medium and a waste toner storage part to store waste toner generated after the toner image is formed on the print medium. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Various examples will be described below by referring to the following figures. 
         FIG.  1    is a perspective view of an image forming apparatus showing a state in which an image forming apparatus cartridge is separated from a case according to an example. 
         FIG.  2    is a perspective view of an image forming apparatus showing a state in which a waste toner storage part is separated from a photosensitive cartridge according to an example. 
         FIG.  3    is a perspective view of an image forming apparatus cartridge according to an example. 
         FIG.  4    is an exploded perspective view of an image forming apparatus cartridge according to an example. 
         FIG.  5    is a longitudinal cross-sectional view taken along line A-A′ in  FIG.  1    according to an example. 
         FIG.  6    is a partial cross-sectional view of an image forming apparatus cartridge according to an example. 
         FIG.  7    is a view illustrating a state in which the waste toner storage part of  FIG.  6    is moved upward according to an example. 
         FIG.  8    is a partial cross-sectional view illustrating a state in which the waste toner storage part of  FIG.  7    is moved upward and an opening/closing member is rotated according to an example. 
         FIG.  9    is a partial cross-sectional view illustrating a state in which a waste toner storage part is moved forward and the opening/closing member is rotated according to an example. 
         FIG.  10    is a side view of an image forming apparatus cartridge showing a state in which a waste toner storage part is moved forward with the frame removed according to an example. 
         FIG.  11    is a side view of an image forming apparatus cartridge showing a state in which a waste toner storage part is moved upward with the frame removed according to an example. 
         FIG.  12    is an exploded perspective view of an image forming apparatus cartridge according to an example. 
         FIG.  13    is an exploded perspective view of an image forming apparatus cartridge according to an example. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, examples will be described with reference to the accompanying drawings. 
     A component that is described as “connected”, “supported”, “fastened”, “mounted”, “removed” or “guided” to another component may be understood as being directly connected, supported, fastened, mounted, removed or guided to the latter component or that a third component may be interposed between the two components. 
     Certain terms used in the present specification are to describe various examples without limiting the present disclosure. An expression used in the singular encompasses the expression of the plural, unless it has a clearly different meaning in the context. 
     The terms used herein, including ordinal numbers such as “first” and “second” may be used to describe, and not to limit, various components. The terms are used to distinguish the components from one another. 
     The meaning of “including” refers to a specific characteristic, region, integer, operation, action, element and/or component, and use of the term is not to limit the existence or addition of other specific characteristic, region, integer, operation, action, element, component and/or group. 
     In this specification, expressions such as upper portion, upper surface, and the like are based on the illustration in the drawings. It is to be mentioned in advance that an object may be expressed differently if the direction of the object is changed. In addition, the front-rear direction may refer to the left-right direction in  FIG.  5   . As an example, a front side may refer to the right side in  FIG.  5   , and a rear side may refer to the left side in  FIG.  3   . 
     Hereinafter, an example of an image forming apparatus  1  will be described with reference to the drawings. 
     Referring to  FIGS.  1  and  2   , the image forming apparatus  1  may generate, print, receive, and transmit image data. For example, the image forming apparatus  1  may be a printer, a copier, a scanner, a fax machine, or a multi-function peripheral printer (MFP) that complexly implements functions of the printer, the copier, the scanner, and the fax machine through one apparatus. However, in the subject specification, the image forming apparatus  1  will be described as a printer for convenience and not by way of limitation. 
     The image forming apparatus  1  may print data generated by a terminal device such as a computer or the like on a printing medium such as paper or the like. The image forming apparatus  1  may include a case  10 , and an image forming apparatus cartridge  11 . 
     The case  10  may form an exterior of the image forming apparatus  1 . A space to accommodate the image forming apparatus cartridge  11  may be formed in the case  10 . In addition, the image forming apparatus cartridge  11  may be removably mounted on the case  10 . For example, the user may remove the image forming apparatus cartridge  11  mounted on the case  10  and may replace it with another (e.g., a new) image forming apparatus cartridge  11 . As an example, the user may open a cover provided on the case  10  and may move the image forming apparatus cartridge  11  rearward with respect to the case  10 , whereby the case  10  and the image forming apparatus cartridge  11  can be separated from each other. Referring to  FIG.  2   , a waste toner storage part  20  of the image forming apparatus cartridge  11  separated from the case  10  may be removed from a frame  430 , examples of which are described later. For example, the waste toner storage part  20  may be unlocked from the frame  430  through a lock part  200  and may be removed from the frame  430  after being unlocked from the frame  430 . 
     Referring to  FIGS.  3  to  5   , the image forming apparatus cartridge  11  may include the waste toner storage part  20 , a cartridge module  30 , a sensor  40 , a photosensitive drum  410 , a waste toner transfer part  420 , the frame  430 , and a cleaner. The waste toner storage part  20  may store waste toner that is generated by forming a toner image on a print medium. For example, the waste toner storage part  20  may store waste toner transferred through the waste toner transfer part  420 , examples of which are described later. A waste toner storage space  20   a  to store waste toner may be formed in the waste toner storage part  20 . The waste toner storage part  20  may be removably mounted to the cartridge module  30 . For example, the waste toner storage part  20  may be removably formed in the frame  430 , examples of which are described later. As a more detailed example, the waste toner storage part  20  may be removed from the cartridge module  30  after being removed from the case  10  together with the cartridge module  30 . 
     The waste toner storage part  20  may be in a mounted state or a removed state. The mounted state may refer to a state in which the waste toner storage part  20  is mounted and supported on the cartridge module  30 . In an example, as the waste toner storage part  20  is moved upward in the mounted state, the waste toner storage part  20  may be released from the mounted state. 
     The removed state may refer to a state in which the waste toner storage part  20  is removed from the cartridge module  30  without being supported and is spaced apart from the cartridge module  30 . For example, the removed state may be a state in which the waste toner storage part  20  is moved upward by a preset distance from the mounted state so that the waste toner storage part  20  and the cartridge module  30  are spaced apart from each other. In this removed state, an opening  100   a  may be closed. The waste toner storage part  20  may include a metal, a plastic, or the like. The waste toner storage part  20  may include a body part  100 , the lock part  200 , an opening/closing member  300 , and an elastic member. 
     Referring to  FIGS.  6  to  8   , the body part  100  may support the lock part  200  and the opening/closing member  300 . This body part  100  may be supported by the cartridge module  30  in the mounted state. The opening  100   a  to bring the waste toner storage part  20  and the cartridge module  30  into communication with each other may be formed in the body part  100 . For example, in the mounted state, the cartridge module  30 , the waste toner storage space  20   a , and the opening  100   a  may communicate with each other. The waste toner generated in the cartridge module  30  may be transferred to the waste toner storage space  20   a  through the opening  100   a.    
     The lock part  200  may selectively fasten the cartridge module  30  and the waste toner storage part  20  to each other. The lock part  200  may be movable, for example, in the front-rear direction. The lock part  200  may restrict or allow movement of the waste toner storage part  20  with respect to the cartridge module  30 . The lock part  200  may be in a locked state or an unlocked state. 
     The locked state may be a state in which the lock part  200  locks the cartridge module  30  and the waste toner storage part  20  to each other. In the locked state, the movement of the waste toner storage part  20  with respect to the cartridge module  30  may be restricted. For example, in the locked state, the movement of the waste toner storage part  20  upward or forward with respect to the cartridge module  30  may be restricted. In other words, the locked state may be a state in which the mounted state is maintained. 
     The unlocked state may be a state in which the cartridge module  30  and the waste toner storage part  20  may be released by moving the lock part  200  forward from the locked state. In this unlocked state, the waste toner storage part  20  may be allowed to move with respect to the cartridge module  30 . For example, in the unlocked state, the waste toner storage part  20  may be allowed to move upward or forward with respect to the cartridge module  30 . In other words, the unlocked state may be a state that allows the mounted state to be switched to the removed state. In addition, in the unlocked state, rotation of the opening/closing member  300  may be allowed. 
     The lock part  200  may be disposed on the upper side of the body part  100 . In an example, a plurality of lock parts  200  may be respectively arranged on left and right sides of the upper side of the body part  100  so as to be spaced apart from each other. A locking protrusion  200   a  protruding upward may be formed on the rear side of the lock part  200 . The locking protrusion  200   a  may be inserted into a locking groove formed on the front upper side of the cartridge module  30 . Such a locking groove may be, for example, a groove recessed upward on the front upper side of the cartridge module  30 . For example, based on the locking protrusion  200   a  being inserted into the locking groove, the lock part  200  may be in the locked state. 
     In an example, the lock part  200  may be movable in the front-rear direction. For example, the lock part  200  may have a shape of a button that can be pressed downward. As a more detailed example, based on the lock part  200  being pressed downward, the lock part  200  may be in the locked state, and based on the pressure applied to the lock part  200  being released, the lock part  200  may be in the unlocked state. 
     As another example, the lock part  200  may be rotatable with respect to the body part  100 . For example, the lock part  200  may be rotatable about a rotation axis extending along a left-right direction or an up-down direction. The lock part  200  may be arranged on both sides of the body part  100  (e.g., on the left and right sides of the body part  100 ). 
     Based on the insertion of the locking protrusion  200   a  into the locking groove being released, the lock part  200  may be in the unlocked state. For example, the insertion of the locking protrusion  200   a  into the locking groove may be released by moving the lock part  200  downward by a length at least as long as the protruding length of the locking protrusion  200   a  and moving the lock part  200  forward. 
     In an example, an elastic body may be provided at the lower end of the lock part  200 . For example, the elastic body provided at the lower end of the lock part  200  may provide an upward elastic force to the lock part  200  based on the lock part  200  being moved downward by a length at least as long as the protruding length of the locking protrusion  200   a.    
     In an example, an elastic body may be provided at the front end of the lock part  200 . For example, the elastic body provided at the front end of the lock part  200  may provide a rearward elastic force to the lock part  200  based on the lock part  200  being moved forward by a preset distance. Such an elastic body may be, for example, a compression coil spring, an elastic rubber, or the like. 
     Referring to  FIG.  6   , the opening/closing member  300  may be in an open state to open the waste toner storage space  20   a  with respect to the cartridge module  30  so that the opening  100   a  is formed, or may be in a closed state to close the opening  100   a . In the mounted state, the opening/closing member  300  may be in the open state. In addition, in the removed state, the opening/closing member  300  may be in the closed state. 
     One end of the opening/closing member  300  may extend along one direction. The one direction may be, for example, the left-right direction perpendicular to the front-rear direction and the up-down direction. The one end of the opening/closing member  300  may be rotatably connected to the body part  100 . The one end of the opening/closing member  300  may be, for example, a lower end of the opening/closing member  300  in the open state. Furthermore, the one end of the opening/closing member  300  may be an upper end of the opening/closing member  300  in the closed state. The opening/closing member  300  may be oriented in the up-down direction so that the one end thereof is disposed below the other end in the mounted state. 
     In addition, the other end of the opening/closing member  300  may be rotatable with respect to the body part  100  about an opening/closing rotation axis provided at the one end of the opening/closing member  300 . The opening/closing rotation axis provided at the one end of the opening/closing member  300  may be a virtual straight line extending along one direction. The other end of the opening/closing member  300  refers to an end opposite to the one end and may be the upper end of the opening/closing member  300  in the open state. Furthermore, the other end of the opening/closing member  300  may be the lower end of the opening/closing member  300  in the closed state. The opening/closing member  300  may be oriented in the up-down direction so that the one end thereof is disposed above the other end in the removed state. 
     Based on being switched between the mounted state and the removed state, the opening/closing member  300  may be rotated about the opening/closing rotation axis provided at the one end of the opening/closing member  300  so that the one end of the opening/closing member  300  approaches the ground. For example, the opening/closing member  300  may be rotated counterclockwise in  FIG.  7    based on being switched between the mounted state and the removed state. The opening/closing member  300  may be rotated by its own weight, for example, based on being switched between the mounted state and the removed state. In other words, even if a separate external force is not applied to the opening/closing member  300 , the opening/closing member  300  may be rotated by gravity. As another example, the opening/closing member  300  may be rotated by the elastic force provided by the elastic member. For example, the opening/closing member  300  may be switchable between the open state and the closed state through the elastic force provided by the elastic member. 
     Based on the opening/closing member  300  being in the mounted state, interference prevention holes may be formed at the upper left and right portions. For example, based on the opening/closing member  300  being in the mounted state, the lock part  200  may be inserted into the interference prevention holes so that the upper end of the opening/closing member  300  does not interfere with the lock part  200 . 
     The elastic member may provide an elastic force to the opening/closing member  300  in a direction in which the opening/closing member  300  gets out of the open state. For example, based on the opening/closing member  300  being in the open state, the elastic member may apply a rearward elastic force to the opening/closing member  300  in the mounted state. Such an elastic member may be, for example, a torsion spring. Such an elastic member may be disposed adjacent to the one end of the opening/closing member  300 , and both ends thereof may be connected to the body part  100  and the opening/closing member  300 , respectively. 
     The cartridge module  30  may form a toner image on a print medium. The cartridge module  30  may generate waste toner after forming the toner image on the print medium. 
     The sensor  40  may detect an amount of waste toner stored in the waste toner storage space  20   a . The sensor  40  may include an infrared sensor, an ultrasonic sensor, a light window, and the like. The sensor  40  may be disposed adjacent to the waste toner storage space  20   a.    
     An electrostatic latent image may be formed on the photosensitive drum  410 . The electrostatic latent image may be formed on the photosensitive drum  410  by an operation of a charger and an exposure device. The charger may charge the surface of the photosensitive drum  410  with a uniform electric potential. The exposure device may form the electrostatic latent image on the surface of the photosensitive drum  410  by changing the surface potential of the photosensitive drum  410  according to the image information to be printed. 
     The waste toner transfer part  420  may transfer the waste toner generated based on the toner image being formed on the print medium to the waste toner storage part  20 . The waste toner transfer part  420  may be rotated about a transfer rotation axis to transfer the waste toner to the waste toner storage part  20 . The transfer rotation axis may be a virtual straight line extending along a direction (e.g., the left-right direction) perpendicular to the waste toner transfer direction and the up-down direction. The waste toner transfer part  420  may extend along the left-right direction to be disposed adjacent to the photosensitive drum  410 . The waste toner transfer part  420  may have, for example, a shape of an auger including a shaft extending along the left-right direction and a helical blade. In addition, the waste toner transfer part  420  may be driven by a motor. 
     Referring to  FIG.  7   , the frame  430  may support the waste toner storage part  20  based on the waste toner storage part  20  being in the mounted state. An accommodation space to accommodate the waste toner storage part  20  may be formed in the frame  430 . The frame  430  may include a tray  431  and a separation part  432 . 
     The tray  431  may support the lower portion of the waste toner storage part  20  in the mounted state. The tray  431  may have an upwardly opened shape. In other words, the waste toner storage part  20  may be moved upward with respect to the tray  431  so that it can be out of the mounted state. 
     Referring to  FIG.  9   , the separation part  432  may be removably connected to one end of the tray  431 . For example, the separation part  432  may be removably connected to the front end of the tray  431 . Based on the separation part  432  being connected to one end of the tray  431 , the separation part  432  may limit movement of the waste toner storage part  20  accommodated in the accommodation space in the front-rear direction. 
     Based on the separation part  432  being separated from the tray  431 , the separation part  432  may allow the waste toner storage part  20  to move in the front-rear direction. In other words, based on the separation part  432  being separated from the tray  431 , the waste toner storage part  20  may be moved in the up-down direction or the front-rear direction to be removed from the mounted state. 
     A cleaner  440  may be formed to remove toner from the outer circumferential surface of the photosensitive drum  410 . The cleaner  440  may be arranged adjacent to the photosensitive drum  410 . For example, the cleaner  440  may be disposed in front of the photosensitive drum  410  and may be disposed behind the waste toner transfer part  420 . 
     The waste toner removed by the cleaner  440  may be transferred by the waste toner transfer part  420 . The waste toner removed by the cleaner  440  may be transferred from the photosensitive drum  410  toward the waste toner storage part  20  by the waste toner transfer part  420 . The direction from the photosensitive drum  410  toward the waste toner storage part  20  may be, for example, a forward direction. 
     The cleaner  440  may be disposed below the waste toner transfer part  420 . For example, the waste toner removed by the cleaner  440  may be loaded on the upper side of the cleaner  440 , and the loaded waste toner may be transferred to the waste toner storage part  20  by the waste toner transfer part  420 . 
     However, examples of the present disclosure are limited thereto. The cleaner  440  may be disposed above the waste toner transfer part  420 . In this case, the waste toner removed by the cleaner  440  may be loaded below the cleaner  440 . 
     Hereinafter, example operations and effects of the image forming apparatus  1  will be described. 
     The cleaner  440  of the image forming apparatus  1  may remove toner from the outer circumferential surface of the photosensitive drum  410 . The removed toner may be transferred from a photosensitive cartridge  400  through the opening  100   a  to the waste toner transfer space  20   a  by the waste toner transfer part  420 . The user may check the amount of waste toner stored in the waste toner storage space  20   a  through the sensor  40 . Based on the amount of waste toner stored in the waste toner storage space  20   a  exceeding a predetermined amount, the waste toner storage part  20  may be separated from the cartridge module  30  and the waste toner stored in the waste toner storage space  20   a  may be discharged to the outside. 
     Hereinafter, an example process in which the waste toner storage part  20  is separated from the cartridge module  30  will be described. The case  10  and the image forming apparatus cartridge  11  may be separated from each other. The waste toner storage part  20  of the image forming apparatus cartridge  11  separated from the case  10  may be removed from the cartridge module  30 . Based on the lock part  200  being moved downward by the protruding length of the locking protrusion  200   a  with respect to the body part  100  in the mounted state, the insertion of the locking protrusion  200   a  into the locking groove may be released. 
     Thereafter, the lock part  200  may be moved forward by a predetermined distance with respect to the body part  100 , whereby the waste toner storage part  20  and the cartridge module  30  may be unlocked. 
     Thereafter, based on the waste toner storage part  20  being moved upward or forward with respect to the cartridge module  30 , it may be removed from the mounted state. While the waste toner storage part  20  is removed from the mounted state, the opening/closing member  300  may be rotated about the opening/closing rotation axis. For example, the other end of the opening/closing member  300  may be rotated in a direction in which it approaches the ground. 
     Based on the waste toner storage part  20  being moved upward or forward by a predetermined distance with respect to the cartridge module  30  and being spaced apart from the cartridge module  30 , the waste toner storage part  20  may be in the removed state. Based on the waste toner storage part  20  being switched between the mounted state and the removed state, the opening/closing member  300  may be in a closed state to close the opening  100   a . Accordingly, while being in the removed state, the waste toner stored in the waste toner storage space  20   a  may be prevented from leaking to the outside as the opening/closing member  300  is switched to the closed state. The waste toner storage part  20  may be separated from the cartridge module  30  while the opening/closing member  300  is kept in the closed state. 
     In an example, the waste toner storage part  20  can be replaced without replacing the entire image forming apparatus cartridge  11 , thereby prolonging the lifespan of the cartridge module  30 . In other words, there is an effect that the user can use the cartridge module  30  of the image forming apparatus  1  until the cartridge module  30  reaches the maximum lifespan, thereby saving unnecessary cost for replacement of the cartridge module  30 . 
     In addition, the image forming apparatus  1  has an effect that since the user can replace the waste toner storage part  20  at a user&#39;s desired moment, it is possible to prevent the inside of the case  10  from being contaminated due to the long-term storage of the waste toner in the waste toner storage space  20   a.    
     In addition, the image forming apparatus  1  has an effect that, via the opening/closing member  300  rotated by its own weight or the elastic force of the elastic member, it can prevent the waste toner from scattering based on the waste toner storage part  20  being removed from the cartridge module  30 . 
     In an example, the frame  430  may not include the tray  431  and the separation part  432 , and the cartridge module  30  may include an assembly guide  600 . Hereinafter, an example of the frame  430  including the assembly guide  600  will be described with reference to  FIGS.  10  and  11   . In the following description, differences from the above-described examples are mainly described. The description and reference numerals of the above-described examples are incorporated here by reference. 
     The assembly guide  600  may guide the movement of the waste toner storage part  20 . The assembly guide  600  may be arranged on a front side of the photosensitive cartridge  400 . The assembly guide  600  may extend along a direction in which the waste toner storage part  20  is removed from the cartridge module  30 . 
     The direction in which the waste toner storage part  20  is removed from the cartridge module  30  may be, for example, the up-down direction. In other words, the assembly guide  600  may extend along the up-down direction. However, the examples are not so limited thereto. The direction in which the waste toner storage part  20  is removed from the cartridge module  30  may be a front-rear direction. In other words, the assembly guide  600  may extend along the front-rear direction. The assembly guide  600  may support the waste toner storage part  20  based on the waste toner storage part  20  being in the mounted state. 
     In addition, a guide groove  100   b  to engage with the assembly guide  600  may be formed in the body part  100 . The guide groove  100   b  may be a slot extending in a direction parallel to the direction in which the assembly guide  600  extends. For example, if the extension direction of the assembly guide  600  is the up-down direction, the guide groove  100   b  may be a slot extending in the up-down direction. As a more detailed example, in the removed state, the upper end of the assembly guide  600  and the lower end of the guide groove  100   b  may be vertically spaced apart from each other. 
     As another example, based on the direction in which the assembly guide  600  extends being the front-rear direction, the guide groove  100   b  may be a slot extending in the front-rear direction. As a more detailed example, in the removed state, the front end of the assembly guide  600  and the rear end of the guide groove  100   b  may be spaced apart from each other back and forth. 
     In addition, the waste toner storage part  20  may be slidably movable in the up-down direction or the front-rear direction in a state in which the guide groove  100   b  and the assembly guide  600  are engaged. For example, a roller or the like may be provided between the guide groove  100   b  and the assembly guide  600 . Through this roller, the waste toner storage part  20  may be moved relative to the photosensitive cartridge  400  in a sliding manner. 
     In an example, the cartridge module  30  may include the photosensitive cartridge  400  and a cartridge assembly  500 . Hereinafter, an example of the cartridge module  30  including the photosensitive cartridge  400  and the cartridge assembly  500  will be described with reference to  FIG.  12   . In the following description, differences from the above-described examples are mainly described. The description and reference numerals of the above-described examples are incorporated here by reference. 
     The photosensitive cartridge  400  may form an electrostatic latent image. The waste toner storage part  20  may be removably mounted on one side of the photosensitive cartridge  400 . The photosensitive cartridge  400  may include the photosensitive drum  410 , the waste toner transfer part  420 , the frame  430 , and the cleaner  440 . 
     The cartridge assembly  500  may supply toner to the electrostatic latent image formed by the photosensitive cartridge  400 . The cartridge assembly  500  may include a developing cartridge  510 . The developing cartridge  510  may be removably mounted on the photosensitive cartridge  400 . For example, the waste toner storage part  20  may be removably mounted on one side of the photosensitive cartridge  400 , and the developing cartridge  510  may be removably mounted on the other side of the photosensitive cartridge  400 . 
     One side of the photosensitive cartridge  400  may be, for example, a front side of the photosensitive cartridge  400 , and the other side of the photosensitive cartridge  400  may be, for example, a rear side of the photosensitive cartridge  400 . Referring to  FIG.  5   , the developing cartridge  510  may include a developing roller  511  and a developing frame  512  to accommodate the developing roller  511  and a developer. 
     The developing roller  511  may supply the developer (e.g., toner) to the electrostatic latent image formed on the photosensitive drum  410 . The developing roller  511  may be arranged adjacent to the photosensitive drum  410  based on the developing cartridge  510  being mounted on the photosensitive cartridge  400 . 
     In an example, the cartridge assembly  500  may further include a toner cartridge  520 . Hereinafter, an example of the cartridge assembly  500  including the toner cartridge  520  be described with reference to  FIG.  13   . In the following description, differences from the above-described examples are mainly described. The description and reference numerals of the above-described examples are incorporated here by reference. 
     The toner cartridge  520  may be removably mounted on the photosensitive cartridge  400  or the developing cartridge  510 . In other words, the toner cartridge  520 , the photosensitive cartridge  400 , and the developing cartridge  510  may be separate members that can be separated from each other. Furthermore, the developing cartridge  510 , the toner cartridge  520 , the photosensitive cartridge  400 , and the waste toner storage part  20  may be separate members that can be separated from each other. As illustrated in  FIG.  5   , the toner cartridge  520  may provide a toner storage space  520   a  to store toner to be supplied to the photosensitive drum  410 . 
     While examples of the present disclosure have been described, the present disclosure is not limited thereto and should be construed as having the widest scope within the technical spirit disclosed in the present specification. The present disclosure may be implemented in a form that is not included in the above described examples by combining or replacing the disclosed examples, however, it also does not depart from the scope of the present disclosure. In addition, it is apparent that the disclosed examples may be changed or modified based on the present specification, and thus, such changes or modifications fall within the scope of the present disclosure.