Processing box and electronic photographic imaging device

Abstract

The present invention provides a process cartridge and an electrophotographic imaging device. The process cartridge includes a developer cartridge, a drum frame, and a support assembly. The developer cartridge includes an end cap. The drum frame includes a second frame and a photosensitive drum mounted on the second frame. One end of the photosensitive drum is provided with a driving force receiving head, which is configured to cooperate with a driving head of the electrophotographic imaging device. The developer cartridge is mounted on the second frame. The support assembly includes a fixed seat, a slider, and a fastener. The fixed seat is mounted on the end cap and has a slide groove. The slider is slidably connected to the slide groove and has a first position and a second position. The slider is provided with a joint that cooperates with the driving head, and the driving head can drive the slider to the second position. The fastener is connected between the fixed seat and the slider, and the fastener prevents the slider from moving from the first position to the second position. The joint can abut against the driving head. The electrophotographic imaging device includes the process cartridge, and the process cartridge can reduce the driving load of the driving head and reduce energy loss.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic photographic imaging, in particular to a processing box and an electronic photographic imaging device provided with the processing box. Background Art

[0002] An electrophotographic imaging device (such as a laser printer) is a device that uses the principles of electrophotography to form an image on an image forming medium (such as paper) through at least the processes of charging, exposure, development, transfer, fixing, and cleaning. The material device for printing consumables used in electrophotographic imaging devices is generally called a processing cartridge.

[0003] A processing cartridge typically includes a developer cartridge and a drum frame. The developer cartridge includes a first frame, a developer roller, a powder feed roller, a stirring frame, a powder discharge blade, a transmission wheel assembly, a first end cap, and a second end cap. The first frame has a powder hopper, a first end wall, and a second end wall. The developer roller and the powder discharge blade are both mounted on the first frame and located outside the powder hopper. The developer roller is located at the powder discharge port of the powder hopper, and the blade of the powder discharge blade abuts the outer peripheral wall of the developer roller and extends into the powder hopper. The powder feed roller and the stirring frame are both mounted within the powder hopper, with the powder feed roller located at the powder discharge port and abutting the developer roller. The transmission wheel assembly is mounted on the first end wall and connected to the developer roller, the powder feed roller, and the stirring frame, respectively. The first end cap covers the transmission wheel assembly and is connected to the first end wall, with a portion of the developer roller gear in the transmission wheel assembly exposed outside the first end cap. The second end cap is mounted on the second end wall. The drum frame includes a second frame, a photosensitive drum, a driving force receiving head, a charging roller, and a cleaning blade. The second frame has a waste toner hopper. The photosensitive drum, charging roller, and cleaning blade are all mounted on the second frame. Among them, the photosensitive drum is located outside the waste toner bin, and the photosensitive drum is located at the powder inlet of the waste toner bin; the charging roller is located in the waste toner bin and adjacent to the photosensitive drum, the blade of the cleaning scraper is adjacent to the outer peripheral surface of the photosensitive drum and extends into the waste toner bin; the driving force receiving head is installed at one end of the photosensitive drum and is located at the first end cover, and the driving force receiving head has a receiving part.

[0004] Currently, a drive head for an electrophotographic imaging device has a dual-drive structure, whereby the drive portion of the drive head interfaces with the receiving portion of the driving force receiving head to drive the photosensitive drum, while the peripheral gear of the drive head meshes with the first gear portion of the developer roller gear exposed outside the first end cap to drive the developer roller, powder feed roller, and stirring frame to rotate. Furthermore, the first gear portion can cooperate with the developer roller gear to position and stabilize the process cartridge installed in the process cartridge mounting cavity of the electrophotographic imaging device. Because the development roller, powder feed roller, stirring frame, and photosensitive drum all have different rotational speeds, the transmission speeds of the various components of the process cartridge adapted in a dual-drive manner require a more complex transmission wheel assembly. Furthermore, the process cartridge used in this dual-drive electrophotographic imaging device cannot be adapted to other single-drive electrophotographic imaging devices.

[0005] In this regard, Figure 1 As shown, Figure 1 An improved processing box 9 is shown, that is, the processing box used in the dual-drive electronic photographic imaging device is improved so that the processing box is converted into a single-drive device. Specifically, the driving part 901 of the driving head 90 of the electronic photographic imaging device is docked with the receiving part 911 of the driving force receiving head 91 to drive the photosensitive drum to rotate, and a second gear part 912 is provided on the driving force receiving head 91, so that the second gear part 912 is engaged with the developing roller gear 921, thereby driving the developing roller 92, the powder feeding roller and the stirring frame to rotate. However, since it is necessary to ensure the stability and position accuracy of the processing box 9 when it is installed in the processing box 9 installation cavity, a support wheel 922 must be provided on the developing roller 92 for cooperation with the first gear portion 902 on the driving head 90, wherein the support wheel 922 can rotate idly around the axis core of the developing roller 92 relative to the axis core (that is, the support wheel 922 cannot drive the developing roller 92 to rotate, and the developing roller 92 cannot drive the support wheel 922 to rotate); however, since during the operation of the electronic photographic imaging device, the driving head 90 will always drive the support wheel 922 to rotate idly, the driving load of the driving head 90 will be increased, resulting in serious energy loss. Summary of the Invention

[0006] In order to solve the above problems, the main purpose of the present invention is to provide a processing box that can reduce the driving load of the driving head and reduce energy loss.

[0007] Another object of the present invention is to provide an electronic photographic imaging device provided with the above-mentioned process cartridge.

[0008] In order to achieve the main purpose of the present invention, the present invention provides a processing box, including a developing box and a drum frame, the developing box includes a first frame, a developing roller, a transmission wheel group and an end cover, the developing roller is installed on the first frame, the developing roller gear of the transmission wheel group is installed on the first end of the developing roller and is located at the first end wall of the first frame, the end cover is covered on the transmission wheel group and connected to the first end wall, the drum frame includes a second frame, a photosensitive drum and a driving force receiving head, the photosensitive drum is installed on the second frame, the driving force receiving head is installed on the first end of the photosensitive drum, the driving force receiving head has a first gear portion, the developing box is installed Mounted on the second frame, the photosensitive drum is adjacent to the developing roller, and the first gear portion is engaged with the developing roller gear, wherein the processing box also includes a supporting assembly, the supporting assembly includes a fixed seat, a slider and a fastener, the fixed seat is mounted at the end cover, the fixed seat has a slide groove, the slider is slidably connected to the slide groove, the slider has a first position and a second position, a coupling portion is provided on the slider, the coupling portion is used to be adjacent to the driving head in the electronic photographic imaging device, the driving head can drive the slider to move to the second position, the fastener is connected between the fixed seat and the slider, the fastener prevents the slider from moving from the first position to the second position.

[0009] As can be seen from the above, when the processing box is installed in the processing box installation cavity of the electronic photographic imaging device, the receiving part of the driving force receiving head is connected with the driving part of the driving head in the processing box installation cavity, so that the driving head can drive the photosensitive drum to rotate, and the driving force receiving head can drive the entire transmission wheel group to transmit through the engagement of the first gear part and the developing roller gear, thereby causing the developing roller, the powder feeding roller and the stirring frame to rotate at different rotation speeds; in addition, the second gear part on the driving head is also connected with the engaging part on the slider to support and position the processing box, and make the installed processing box more stable, and at the same time can The invention can reduce the impact of vibration generated during the operation of the electronic photographic imaging device on the processing box; furthermore, when the electronic photographic imaging device is started for the first time after the processing box is installed in the processing box installation cavity, the second gear portion on the drive head will drive the slider from the first position to the second position through the joint portion, thereby causing the joint portion in the second position to abut against the second gear portion to support, position, and stabilize the processing box. At the same time, during the subsequent operation of the electronic photographic imaging device, the drive head no longer needs to drive the slider to move, so that the drive head can be in an idling state, thereby reducing the driving load of the drive head. Through the structural design of the processing box, the problem that the drive head needs to drive the supporting wheel on the developing roller of the existing processing box to idle after the processing box is installed in the processing box installation cavity is effectively solved, thereby reducing the load on the drive head, slowing down the wear rate of the second gear portion on the drive head, and extending the service life of the drive head.

[0010] A preferred solution is that the engaging portion includes a plurality of teeth, and the plurality of teeth are distributed along the extending direction of the sliding groove.

[0011] As can be seen from the above, the above design enables the teeth of the engaging portion to drive the second gear portion on the head to engage, so that when the electronic photographic imaging device is started for the first time after the processing box is installed in the processing box installation cavity, the second gear portion on the driving head can reliably drive the slider from the first position to the second position.

[0012] Another preferred solution is that the joint is an elastic block, the elastic block is elastically deformable, the elastic block is detachably connected to the slider or is bonded and fixed to the slider, and the elastic block is made of rubber or silicone rubber.

[0013] As can be seen from the above, the joint is arranged to be an elastic block that can be elastically deformed, so that when the electronic photographic imaging device is started for the first time after the processing box is installed in the processing box installation cavity, the second gear part on the driving head can reliably drive the slider to move from the first position to the second position; and the elastic block is designed to be detachably connected to the slider or bonded to the slider, so that when the elastic block is worn, the elastic block can be replaced to extend the service life of the processing box.

[0014] Another preferred solution is that the fixing seat and the end cover are detachably connected, or the fixing seat and the end cover are adhesively fixed, or the fixing seat and the end cover are integrally formed; the end cover has an avoidance opening, the fixing seat is located on the inner side of the end cover, and the joint can extend from the avoidance opening to the outside of the end cover.

[0015] As can be seen from the above, the connection method between the fixing seat and the end cover can be modified according to production and design requirements, so as to make the production and assembly of the processing box more reasonable and better control the production cost.

[0016] Another preferred solution is that the fastener is a reset elastic member, and the reset elastic member forces the slider to slide along the sliding groove from the second position to the first position.

[0017] As can be seen from the above, the fastener is set as a reset elastic member, so that when the processing box is taken out from the processing box installation cavity, the reset elastic member can force the slider to return to the initial position to facilitate the next installation of the processing box.

[0018] Another preferred solution is that the fastener includes a first spring piece, which is installed on the side groove wall of the slide groove, and the first spring piece extends into the slide groove at an angle to the extension direction of the slide groove. The first protruding end of the first spring piece is set close to the second position, and the first protruding end abuts on the slider or abuts on the joint. The first spring piece is detachably connected to the fixed seat, or the first spring piece and the fixed seat are integrally formed, or the first spring piece is adhesively fixed to the fixed seat.

[0019] As can be seen from the above, the above design enables the first spring to apply pressure to the slider so that the slider is fixed in the slide groove and does not move, and when the second gear part on the drive head drives the slider to move from the first position to the second position, the slide groove cooperates to clamp the slider in the second position.

[0020] A further solution is that in the depth direction of the slide groove, the joint is located on the upper side of the slider, and in the axial direction of the developing roller, the first distance between the joint and the side groove wall is smaller than the second distance between the first protruding end and the side groove wall.

[0021] As can be seen from the above, the above design can make the assembly between the support assembly and the end cover more optimized and reasonable, and can reduce the space required to occupy the support assembly; at the same time, by designing the relationship between the first distance and the second distance, it can effectively prevent the slider from moving from the second position to the first position under the influence of vibrations generated during the operation of the electronic photographic imaging device.

[0022] A further solution is that the fastener also includes a protrusion, which is arranged on the slider. In the depth direction, the protrusion is located on the upper side of the slider, the first protruding end abuts on the protrusion, the protrusion and the slider are detachably connected, or the protrusion and the slider are integrally formed, or the protrusion is adhesively fixed to the slider.

[0023] As can be seen from the above, the provision of the protrusion can further optimize the structure of the support assembly, reduce the space required for the support assembly, and at the same time further improve the effect of the fastener in preventing the slider from sliding between the first position and the second position.

[0024] Another preferred solution is that the fastener includes a second spring piece, and in the depth direction of the slide groove, the second spring piece is located on the upper side of the slider, and the second spring piece is arranged at an angle from the top of the slide groove toward the bottom of the slide groove. The second extended end of the second spring piece abuts on the slider, and the second extended end is arranged close to the second position. The second spring piece is bonded and fixed to the fixed seat, or the second spring piece and the fixed seat are integrally formed.

[0025] As can be seen from the above, the above design enables the second spring piece to apply pressure to the slider so that the slider is fixed in the slide groove and does not move, and when the second gear part on the driving head drives the slider to move from the first position to the second position, the slider is clamped and fixed in the second position by cooperating with the slide groove; at the same time, the second spring piece can also play a role in pressing the slider to limit it in the slide groove.

[0026] In order to achieve another object of the present invention, the present invention provides an electronic photographic imaging device, including a shell, a processing box mounting cavity is provided in the shell, a driving head is provided in the processing box mounting cavity, the driving head has a driving part and a second gear part, wherein the above-mentioned processing box is installed in the processing box mounting cavity, the driving part is cooperated and connected with the receiving part of the driving force receiving head, the second gear part is cooperated and connected with the engaging part, and the second gear part can drive the slider to move from the first position to the second position.

[0027] It can be seen from the above that the electronic photographic imaging device provided with the above-mentioned processing box can effectively reduce the driving load of the drive head, slow down the wear rate of the second gear part on the drive head, and extend the service life of the drive head; at the same time, it can still ensure the installation position of the processing box when it is installed in the processing box installation cavity, and effectively support the processing box, thereby ensuring the stability of the processing box during the operation of the electronic photographic imaging device, thereby ensuring the imaging quality of the electronic photographic imaging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an exploded view of the local structure of an existing processing box.

[0029] Figure 2 It is a structural diagram of the first embodiment of the processing box of the present invention.

[0030] Figure 3 It is a first partial structural diagram of the first embodiment of the processing box of the present invention.

[0031] Figure 4 1 is an exploded view of the second partial structure of the first embodiment of the process cartridge of the present invention.

[0032] Figure 5 It is a structural diagram of the first embodiment of the processing box of the present invention after omitting some components.

[0033] Figure 6 This is a reference diagram of the second embodiment of the processing box of the present invention after omitting some components.

[0034] Figure 7 1 is a structural diagram of a drum frame according to a first embodiment of a process cartridge of the present invention.

[0035] Figure 8 This is a reference diagram of the third embodiment of the processing box of the present invention after omitting some components.

[0036] Figure 9 This is a reference diagram of the use state of the first embodiment of the processing box of the present invention.

[0037] Figure 10 This is a reference diagram of the fourth embodiment of the processing box of the first embodiment of the present invention in the state of use after some components are omitted.

[0038] Figure 11 This is a reference diagram of the first usage state of the second embodiment of the processing box of the present invention after some components are omitted.

[0039] Figure 12 This is a reference diagram of the second usage state of the second embodiment of the processing box of the present invention after some components are omitted.

[0040] Figure 13 It is a structural diagram of the third embodiment of the processing box of the present invention from the first perspective after omitting some components.

[0041] Figure 14 It is a structural diagram of the third embodiment of the processing box of the present invention from a second viewing angle after omitting some components.

[0042] Figure 15 It is a partial structural diagram of the fourth embodiment of the processing box of the present invention with some components omitted.

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0044] Process cartridge first embodiment

[0045] Reference Figure 2 The process cartridge 100 includes a developing cartridge 1 and a drum frame 2. Figure 3 and Figure 4 The developing box 1 includes a first frame 11, a developing roller 12, a powder feeding roller, a stirring frame, a powder discharge knife 13, a transmission wheel group 14, an end cover 15, a second end cover 16 and a supporting assembly 17.

[0046] The first frame 11 has a powder hopper, a first end wall, and a second end wall. The powder hopper is used to store toner. The first and second end walls are located at both ends of the powder hopper along the axial direction of the developing roller 12. The developing roller 12 is rotatably mounted on the first frame 11 about its own rotation axis. The developing roller 12 is located outside the powder hopper and at the powder outlet of the powder hopper. The developing roller 12 is used to evenly transfer the toner in the powder hopper to the photosensitive drum 22 of the drum frame 2 for development.

[0047] The powder feed roller is rotatably mounted on the first frame 11 about its own rotational axis. It is located within the powder hopper and at the powder outlet. It is adjacent to the developing roller 12 and is used to transfer toner from the powder hopper to the developing roller 12. The stirring frame is rotatably mounted on the first frame 11 about its own rotational axis. The stirring frame is located within the powder hopper and is used to transfer toner from the powder hopper to the developing roller 12 and the powder feed roller, as well as to stir the toner in the powder hopper to prevent it from clumping.

[0048] The powder knife 13 is installed on the first frame 11. The powder knife 13 is located outside the powder bin and at the powder outlet. The blade of the powder knife 13 is adjacent to the outer periphery of the developing roller 12, and the blade of the powder knife 13 extends into the powder bin. The powder knife 13 is used to control the thickness of the carbon powder layer on the developing roller 12 so that the thickness of the carbon powder layer on the developing roller 12 remains consistent.

[0049] The transmission wheel assembly 14 includes a developing roller gear 141, a powder feed roller gear, a stirring frame gear, and an idler gear. The developing roller gear 141 is mounted on the first end of the developing roller 12 and is located on the outside of the first end wall. The powder feed roller gear is mounted on the first end of the powder feed roller and is located on the outside of the first end wall, and the powder feed roller gear meshes with the developing roller gear 141. The stirring frame gear is mounted on the first end of the stirring frame and is located on the outside of the first end wall. The idler gear is rotatably mounted on the first end wall around its own rotation axis and is located on the outside of the first end wall. The idler gear meshes with the powder feed roller gear and the stirring frame gear, respectively. By configuring the transmission wheel assembly 14, the transmission wheel assembly 14 can drive the developing roller 12, the powder feed roller, and the stirring frame to rotate respectively, and can enable the developing roller 12, the powder feed roller, and the stirring frame to have different rotation speeds.

[0050] End cap 15 covers the transmission wheel assembly 14 and is removably connected to the first end wall. Specifically, the transmission wheel assembly 14 is disposed between the first end wall and end cap 15. End cap 15 has a relief opening 151, which faces the photosensitive drum 22 of the drum frame 2 and connects the inside and outside of the first end wall. A second end cap 16 is removably mounted on the second end wall.

[0051] Combine Figure 5 and Figure 6The support assembly 17 includes a fixed seat 171, a slider 172 and a fastener 173. In this embodiment, the fixed seat 171 is installed on the inner side of the end cover 15, that is, the fixed seat 171 is located between the first end wall and the end cover 15, and the fixed seat 171 is arranged near the avoidance opening 151 of the end cover 15; the fixed seat 171 has a slide groove 1711, and the extension direction of the slide groove 1711 is perpendicular to the axial direction of the developing roller 12. It should be noted that in another embodiment, the fixed seat 171 can also be installed outside the end cover 15. When the fixed seat 171 is outside the end cover 15, the setting of the avoidance opening 151 can also be cancelled; or, in another embodiment, the fixed seat 171 can also be installed on the first end wall of the first frame 11, and the setting of the avoidance opening 151 on the end cover 15 is retained, so that the engaging portion 1721 of the slider 172 can extend from the avoidance opening 151 to the outside of the end cover 15.

[0052] In this embodiment, the slide 1711 is provided with a first limiting portion 17111 at one end close to the avoidance opening 151, and the slide 1711 is provided with a second limiting portion 17112 at the end away from the avoidance opening 151; the fixing seat 171 is preferably formed integrally with the end cover 15 to ensure the position installation accuracy of the fixing seat 171. Of course, in another embodiment, the fixing seat 171 and the end cover 15 can be connected in a detachable manner, for example, the fixing seat 171 and the end cover 15 are fixedly connected by bolts, or the fixing seat 171 and the end cover 15 are fixedly connected by a snap connection. This type of connection makes the structure of the end cover 15 simpler, facilitates the mold opening of the end cover 15, and reduces the production cost of the end cover 15; in another embodiment, the fixing seat 171 can be fixedly installed on the end cover 15 by adhesive fixation.

[0053] The slider 172 is slidably connected to the slide groove 1711 along the extending direction of the slide groove 1711. The slider 172 has a first position (see Figure 6 ) and the second position (see Figure 10), the first position is at the end of the chute 1711 near the avoidance opening 151, and the second position is at the end of the chute 1711 away from the avoidance opening 151. The slider 172 is provided with a joint 1721, which can extend from the avoidance opening 151 to the outside of the end cover 15. In the axial direction of the developing roller 12, the projected area of ​​the portion of the joint 1721 extending from the end cover 15 in the first position is greater than the projected area of ​​the portion of the joint 1721 extending from the end cover 15 in the second position. In this embodiment, the joint 1721 includes a plurality of teeth distributed along the extension direction of the chute 1711, and the plurality of teeth are preferably integrally formed with the slider 172. In the initial state, the slider 172 is located in the first position. When the processing box 100 is installed in the processing box 100 installation cavity of the electronic photographic imaging device, the teeth on the slider 172 engage with the second gear portion 32 of the drive head 3 in the processing box 100 installation cavity to support and position the processing box 100, and make the installed processing box 100 more stable. At the same time, it can also reduce the impact of vibration generated during the operation of the electronic photographic imaging device on the processing box 100; furthermore, when the processing box 100 is installed in the processing box 100 installation cavity, the electronic photographic imaging When the device is first started, the second gear portion 32 on the drive head 3 drives the slider 172 from the first position to the second position via the engaging portion 1721. This causes the engaging portion 1721 in the second position to abut against the second gear portion 32 and disengage from the second gear portion 32, while still supporting, positioning, and stabilizing the process cartridge 100. Furthermore, during subsequent operation of the electrophotographic imaging device, the drive head 3 no longer needs to drive the slider 172 to move, thereby idling the drive head 3 and reducing the driving load on the drive head 3. Preferably, the length of the engaging portion 1721 is less than the total length of the slider 172.

[0054] A fastener 173 is connected between the fixed seat 171 and the slider 172. The fastener 173 prevents the slider 172 from moving from the first position to the second position. Specifically, in this embodiment, the fastener 173 is preferably a resilient member, such as a compression spring. The resilient member is disposed within the chute 1711. The first end of the compression spring abuts the slider 172, and the second end of the compression spring is mounted on the second limiting portion 17112 and abuts the fixed seat 171. The compression spring is configured to force the slider 172 to move from the second position to the first position along the extension direction of the chute 1711. When the process cartridge 100 is removed from the process cartridge 100 installation cavity, the resilient member can force the slider 172 to return to its initial position, facilitating the next installation of the process cartridge 100. Furthermore, when the slider 172 moves to the first position, the slider 172 abuts the first limiting portion 17111, preventing the slider 172 from slipping out of the chute 1711 of the fixed seat 171.

[0055] Combine Figure 7 and Figure 8 The drum frame 2 includes a second frame 21, a photosensitive drum 22, a charging roller 23, a cleaning blade 24, and a driving force receiving head 25. The second frame 21 has a waste toner bin and a mounting position. The waste toner bin is used to recover the waste toner remaining on the photosensitive drum 22 after imaging. The photosensitive drum 22 is rotatably mounted on the second frame 21 around its own rotation axis. The photosensitive drum 22 is located outside the waste toner bin and at the powder inlet of the waste toner bin. The photosensitive drum 22 is used for image formation. The charging roller 23 is rotatably mounted on the second frame 21 around its own rotation axis. The charging roller 23 is adjacent to the photosensitive drum 22 and is used to charge the photosensitive drum 22 so that the toner on the developing roller 12 of the developing cartridge 1 can be transferred to the photosensitive drum 22 for imaging. The cleaning scraper 24 is installed on the second frame 21, the blade of the cleaning scraper 24 is adjacent to the outer peripheral surface of the photosensitive drum 22, and the blade of the cleaning scraper 24 is located in the waste powder bin. The cleaning scraper 24 is used to remove the waste powder remaining on the photosensitive drum 22 and recycle the waste powder into the waste powder bin.

[0056] The driving force receiving head 25 has a first gear portion 251 and a receiving portion 252. The driving force receiving head 25 is mounted on the first end of the photosensitive drum 22. When the developing cartridge 1 is mounted in the mounting position of the second frame 21, the photosensitive drum 22 is adjacent to the developing roller 12, and the first gear portion 251 is engaged with the developing roller gear 141. When the processing cartridge 100 is mounted in the processing cartridge 100 mounting cavity of the electrophotographic imaging device, the driving portion 31 of the driving head 3 in the processing cartridge 100 mounting cavity is engaged with the receiving portion 252 of the driving force receiving head 25, so that the driving head 3 can drive the photosensitive drum 22 to rotate, and the driving force receiving head 25 can drive the entire transmission wheel group 14 to transmit through the engagement of the first gear portion 251 with the developing roller gear 141, thereby causing the developing roller 12, the powder feeding roller, and the stirring frame to rotate at different rotational speeds.

[0057] The following combination Figure 9 and Figure 10 , briefly describe the use process of the processing box 100:

[0058] When the processing box 100 is installed in the processing box 100 installation cavity, the driving part 31 of the driving head 3 in the processing box 100 installation cavity is cooperated and connected with the receiving part 252 of the driving force receiving head 25, and the second gear part 32 of the driving head 3 is engaged with the engaging part 1721 on the slider 172 to ensure the installation position of the processing box 100 and support the processing box 100, so that the processing box 100 can be firmly fixed in the processing box 100 installation cavity. At the same time, it can also prevent the processing box 100 from sliding in the processing box 100 installation cavity during the operation of the electronic photographic imaging device, thereby ensuring the imaging quality of the electronic photographic imaging device.

[0059] When the electronic photographic imaging device is first started after the process cartridge 100 is installed in the process cartridge 100 installation cavity, the drive head 3 drives the photosensitive drum 22, the developing roller 12, the powder feed roller, and the stirring frame to rotate via its own drive portion 31 and the receiving portion 252 of the driving force receiving head 25. At the same time, the second gear portion 32 on the drive head 3 drives the slider 172 from the first position to the second position via the joint portion 1721, thereby compressing the compression spring. When the slider 172 moves to the second position, the tooth of the joint portion 1721 closest to the avoidance opening 151 abuts against the second gear portion 32 of the drive head 3 under the action of the compression spring, thereby supporting and positioning the process cartridge 100 and ensuring the stability of the process cartridge 100 after installation. At the same time, the drive head 3 no longer needs to drive the slider 172 to move, so that the subsequent drive head 3 can always be in an idle state, thereby reducing the driving load of the drive head 3.

[0060] When the processing box 100 is taken out from the processing box 100 installation cavity, the driving part 31 of the driving head 3 is disengaged from the coupling with the receiving part 252 of the driving force receiving head 25, and the second gear part 32 of the driving head 3 is disengaged from the abutment with the engaging part 1721 of the slider 172. At this time, the slider 172 moves from the second position to the first position under the elastic force of the compression spring to restore to the initial position, thereby facilitating the next installation of the processing box 100.

[0061] In summary, it can be seen that through the structural design of the processing box, the problem that the drive head needs to drive the support wheel on the developing roller of the existing processing box to idle after the existing processing box is installed in the processing box installation cavity is effectively solved, thereby reducing the load on the drive head, slowing down the wear speed of the second gear part on the drive head, and extending the service life of the drive head.

[0062] Process cartridge second embodiment

[0063] Reference Figure 11 and Figure 12 The difference between this embodiment and the first embodiment of the process cartridge lies in the structure of the engaging portion. Specifically, in this embodiment, the engaging portion does not include a plurality of teeth but is instead an elastic block 41. The elastic block 41 is elastically deformable and can be detachably connected to a slider 42 or adhesively fixed to the slider 42. The elastic block 41 is preferably made of rubber or silicone rubber.

[0064] Similarly, when the processing box is installed in the processing box mounting cavity, the driving part 431 of the driving head 43 in the processing box mounting cavity is connected with the receiving part of the driving force receiving head, and the second gear part 432 of the driving head 43 is engaged with the elastic block 41 on the slider 42 to ensure the installation position of the processing box and support the processing box, so that the processing box can be firmly fixed in the processing box mounting cavity. At the same time, it can also prevent the processing box from sliding in the processing box mounting cavity during the operation of the electronic photographic imaging device, thereby ensuring the imaging quality of the electronic photographic imaging device.

[0065] When the electronic photographic imaging device is started for the first time after the process cartridge is installed in the process cartridge installation cavity, the driving head 43 drives the photosensitive drum and the developing roller, the powder feeding roller, and the stirring frame to rotate through its own driving portion 431 and the receiving portion of the driving force receiving head. At the same time, the second gear portion 432 on the driving head 43 drives the slider 42 from the first position (such as Figure 11 ) moves to the second position (as shown) Figure 12 As shown, the compression spring 44 is compressed. When the slider 42 moves to the second position, the elastic block 41, under the action of the compression spring 44, abuts against the second gear portion 432 of the drive head 43 to support and position the process cartridge, ensuring the stability of the installed process cartridge. At the same time, the drive head 43 no longer needs to drive the slider 42 to move, so that the subsequent drive head 43 can always be in an idle state, thereby reducing the driving load of the drive head 43.

[0066] When the processing box is taken out from the processing box installation cavity, the driving part 431 of the driving head 43 is disengaged from the coupling with the receiving part of the driving force receiving head, and the second gear part 432 of the driving head 43 is disengaged from the abutment with the elastic block 41 of the slider 42. At this time, the slider 42 moves from the second position to the first position under the elastic force of the compression spring 44 to restore to the initial position, thereby facilitating the next installation of the processing box.

[0067] Process cartridge third embodiment

[0068] Reference Figure 13 and Figure 14The present embodiment differs from the above-mentioned embodiments in the structure of the fastener. Specifically, in this embodiment, the fastener includes a first spring piece 511, which is mounted on a side groove wall 5211 of the slide groove 521 of the fixing seat 52. The first spring piece 511 extends into the slide groove 521 at an angle relative to the extension direction of the slide groove 521. The first protruding end of the first spring piece 511 is disposed near the second position and abuts against the slider 53 or the engagement portion 531. Configuring the fastener as the first spring piece 511 allows the first spring piece 511 to apply pressure to the slider 53, thereby securing the slider 53 within the slide groove 521 and preventing it from moving. When the second gear portion on the driving head drives the slider 53 from the first position to the second position, the first spring piece 511 cooperates with the slide groove 521 to clamp the slider 53 in the second position. The first elastic piece 511 is preferably formed integrally with the fixing seat 52 . Of course, in other embodiments, the first elastic piece 511 may be detachably connected to the fixing seat 52 , or the first elastic piece 511 may be fixed to the fixing seat 52 by adhesive.

[0069] Furthermore, in the depth direction of the chute 521, the engagement portion 531 is located above the slider 53. In the axial direction, the first distance L1 between the engagement portion 531 and the side groove wall 5211 is less than the second distance L2 between the first extension end and the side groove wall 5211. This optimizes and rationalizes the assembly between the support assembly and the end cap, and reduces the space required for the support assembly. Furthermore, the design of the relationship between the first distance L1 and the second distance L2 effectively prevents the slider 53 from moving from the second position to the first position due to vibrations generated during operation of the electrophotographic imaging device. Preferably, the second distance L2 is less than 1.5 times the first distance L1.

[0070] Preferably, the fastener further includes a protrusion 512, which is disposed on the slider 53. In the depth direction, the protrusion 512 is located above the slider 53, and the first protruding end abuts against the protrusion 512. The protrusion 512 and the slider 53 are detachably connected, or the protrusion 512 and the slider 53 are integrally formed, or the protrusion 512 is adhesively fixed to the slider 53. The provision of the protrusion 512 can further optimize the structure of the support assembly, reduce the space required for the support assembly, and further enhance the effectiveness of the fastener in preventing the slider 53 from sliding between the first position and the second position.

[0071] When the processing box is installed in the processing box installation cavity, the driving part of the driving head in the processing box installation cavity is connected with the receiving part of the driving force receiving head, and the second gear part of the driving head is engaged with the engaging part 531 on the slider 53 to ensure the installation position of the processing box and support the processing box, so that the processing box can be firmly fixed in the processing box installation cavity. At the same time, it can also prevent the processing box from sliding in the processing box installation cavity during the operation of the electronic photographic imaging device, thereby ensuring the imaging quality of the electronic photographic imaging device.

[0072] When the electronic photographic imaging device is first started after the process cartridge is installed in the process cartridge installation cavity, the drive head drives the photosensitive drum, developing roller, powder feed roller, and stirring frame to rotate through its own drive portion and the receiving portion of the driving force receiving head. At the same time, the second gear portion on the drive head drives the slider 53 from the first position to the second position through the joint portion 531. After the slider 53 moves to the second position, the joint portion 531 constantly abuts against the second gear portion of the drive head to support and position the process cartridge, ensuring the stability of the installed process cartridge. At the same time, the drive head no longer needs to drive the slider 53 to move, so that the subsequent drive head can always be in an idling state, thereby reducing the driving load of the drive head.

[0073] When the processing box is taken out from the processing box installation cavity, the driving part of the driving head is disengaged from the coupling with the receiving part of the driving force receiving head, and the second gear part of the driving head is disengaged from the abutment with the engaging part 531 of the slider 53. Subsequently, the slider 53 is moved from the second position to the first position by manual operation to facilitate the next installation and use of the processing box.

[0074] Process cartridge fourth embodiment

[0075] Reference Figure 15 The difference between this embodiment and the third embodiment of the processing box lies in the structure of the fastener. Specifically, in this embodiment, the fastener includes a second spring piece 61. In the depth direction of the slide groove 621, the second spring piece 61 is located on the upper side of the slider 63. The second spring piece 61 is arranged at an angle from the top of the slide groove 621 toward the bottom of the slide groove 621. The second extended end of the second spring piece 61 abuts against the slider 63, and the second extended end is arranged close to the second position. The second spring piece 61 is preferably integrally formed with the fixing seat 62. Of course, in other embodiments, the second spring piece 61 can also be bonded and fixed to the fixing seat 62.

[0076] Electrophotographic imaging device embodiment

[0077] An electrophotographic imaging device includes a housing and a process cartridge. The housing includes a process cartridge mounting cavity. The process cartridge mounting cavity includes a drive head. The drive head includes a drive portion and a second gear portion. The process cartridge is any one of the first to fourth embodiments of the process cartridge described above. The process cartridge is mounted in the process cartridge mounting cavity. The drive portion is coupled to a receiving portion of the drive force receiving head. The second gear portion is coupled to an engagement portion. The second gear portion is configured to drive a slider from a first position to a second position.

[0078] The electronic photographic imaging device provided with the above-mentioned processing box can effectively reduce the driving load of the drive head, slow down the wear rate of the second gear part on the drive head, and extend the service life of the drive head; at the same time, it can still ensure the installation position of the processing box when it is installed in the processing box installation cavity, and effectively support the processing box, thereby ensuring the stability of the processing box during the operation of the electronic photographic imaging device, thereby ensuring the imaging quality of the electronic photographic imaging device.

[0079] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Processing box, including: A developing cartridge comprising a first frame, a developing roller, a transmission wheel assembly, and an end cover, wherein the developing roller is mounted on the first frame, a developing roller gear of the transmission wheel assembly is mounted on a first end of the developing roller and is located at a first end wall of the first frame, and the end cover is engaged with the transmission wheel assembly and connected to the first end wall; a drum frame comprising a second frame, a photosensitive drum, and a driving force receiving head, wherein the photosensitive drum is mounted on the second frame, the driving force receiving head is mounted on a first end of the photosensitive drum, the driving force receiving head having a first gear portion, the developing cartridge is mounted on the second frame, the photosensitive drum is adjacent to the developing roller, and the first gear portion is engaged with a gear of the developing roller; It is characterized in that the processing box further includes a supporting assembly, and the supporting assembly includes: A fixing seat, the fixing seat is installed on the end cover, and the fixing seat has a sliding groove; a slider slidably connected to the slide groove, the slider having a first position and a second position, the slider being provided with an engagement portion, the engagement portion being configured to abut a drive head in an electrophotographic imaging device, the drive head being configured to drive the slider to move to the second position; A fastener is connected between the fixing seat and the slider, and the fastener prevents the slider from moving from the first position to the second position.

2. The process cartridge according to claim 1, wherein: The engaging portion includes a plurality of teeth, and the plurality of teeth are distributed along an extending direction of the sliding groove.

3. The process cartridge according to claim 1, wherein: The joint portion is an elastic block, which is elastically deformable and detachably connected to the slider or adhesively fixed to the slider; The elastic block is made of rubber or silicone rubber.

4. The process cartridge according to claim 1, wherein: The fixing base is detachably connected to the end cover, or the fixing base is adhesively fixed to the end cover, or the fixing base and the end cover are integrally formed; The end cover has an escape opening, the fixing seat is located on the inner side of the end cover, and the joint portion can extend from the escape opening to the outside of the end cover.

5. The process cartridge according to any one of claims 1 to 4, wherein: The fastener is a reset elastic member, and the reset elastic member forces the slider to slide along the sliding groove from the second position to the first position.

6. The process cartridge according to any one of claims 1 to 4, wherein: The fastener includes a first elastic piece, the first elastic piece is mounted on a side groove wall of the slide groove, the first elastic piece extends into the slide groove at an angle relative to the extension direction of the slide groove, a first extended end of the first elastic piece is disposed near the second position, and the first extended end abuts against the slider or the joint portion; The first elastic piece is detachably connected to the fixing seat, or the first elastic piece and the fixing seat are integrally formed, or the first elastic piece is adhesively fixed to the fixing seat.

7. The process cartridge according to claim 6, wherein: In the depth direction of the slide groove, the engaging portion is located above the slider, and in the axial direction of the developing roller, a first distance between the engaging portion and the side groove wall is smaller than a second distance between the first protruding end and the side groove wall.

8. The process cartridge according to claim 7, wherein: The fastener further includes a protrusion, which is provided on the slider. In the depth direction, the protrusion is located above the slider, and the first protruding end abuts against the protrusion. The protrusion is detachably connected to the slider, or the protrusion and the slider are integrally formed, or the protrusion is adhesively fixed to the slider.

9. The process cartridge according to any one of claims 1 to 4, wherein: The fastener includes a second elastic piece, which is located above the slider in the depth direction of the slide groove, and is arranged obliquely from the top of the slide groove toward the bottom of the slide groove. The second extended end of the second elastic piece abuts against the slider, and the second extended end is arranged near the second position; The second elastic piece is bonded and fixed on the fixing seat, or the second elastic piece and the fixing seat are integrally formed.

10. An electrophotographic imaging device comprising a housing, a process cartridge mounting cavity being provided in the housing, a drive head being provided in the process cartridge mounting cavity, the drive head having a drive portion and a second gear portion, wherein: The process cartridge installation cavity is provided with a process cartridge according to any one of claims 1 to 9; The driving portion is cooperatively connected with the receiving portion of the driving force receiving head, and the second gear portion is cooperatively connected with the engaging portion. The second gear portion can drive the slider to move from the first position to the second position.

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