Processing box, imaging system, and installation method and working method of processing box

Abstract

The present invention provides a processing box, an imaging system, and a processing box installation method and a working method. The processing box includes a box body, a photosensitive drum and a developing roller. Both the photosensitive drum and the developing roller are rotatably supported between the two end walls of the box body. The axial end of the photosensitive drum is provided with a photosensitive drum gear and a coupling protrusion. The axial end of the developing roller is provided with a developing roller gear. The developing roller gear is transmission-connected with the photosensitive drum gear. The processing box also includes a guide gear. In the axial direction of the photosensitive drum, the guide gear is located on the side of the coupling protrusion away from the photosensitive drum. In the radial direction of the photosensitive drum, the guide gear is located on the radial outer side of the coupling protrusion and is arranged close to the coupling protrusion. The guide gear can rotate freely relative to the shaft supporting the guide gear. The installation process of the processing box is smooth.

Description

Technical Field

[0001] The present invention relates to the field of electronic photographic imaging, and in particular to a processing box, an imaging system, and an installation method and a working method of the processing box. Background Art

[0002] There is a processing box. In order to improve its versatility and adapt to three electronic photographic imaging devices with different structures, the applicant disclosed a processing box in a patent application with publication number CN110347029A. The processing box is provided with a two-stage gear at the end of the developing roller. However, it is found in actual use that when the coupling protrusion of the photosensitive drum in the processing box is engaged with the transmission head with the gear, due to the long length of the transmission head in the electronic photographic imaging device, the contact between the box body and the free end of the transmission head during the installation of the processing box will cause the transmission head to swing, thereby making it difficult for the coupling protrusion at the end of the photosensitive drum to engage with the transmission head. Summary of the invention

[0003] The first object of the present invention is to provide a processing box with a smooth installation process.

[0004] A second object of the present invention is to provide an imaging system having the above-mentioned processing box.

[0005] The third object of the present invention is to provide a method for installing the above-mentioned processing box.

[0006] The fourth object of the present invention is to provide a working method of the above-mentioned processing box.

[0007] To achieve the above-mentioned first purpose, the processing box provided by the present invention includes a box body, a photosensitive drum and a developing roller, and the photosensitive drum and the developing roller are both rotatably supported between the two end walls of the box body. The axial end of the photosensitive drum is provided with a photosensitive drum gear and a coupling protrusion, and the axial end of the developing roller is provided with a developing roller gear, and the developing roller gear is transmission-connected with the photosensitive drum gear; the processing box also includes a guide gear, in the axial direction of the photosensitive drum, the guide gear is located on the side of the coupling protrusion away from the photosensitive drum, and in the radial direction of the photosensitive drum, the guide gear is located on the radial outside of the coupling protrusion and is arranged close to the coupling protrusion; the guide gear can rotate freely relative to the shaft supporting the guide gear.

[0008] It can be seen from the above scheme that, due to the provision of the guide gear, when the processing box is installed, the gear portion of the transmission head in the imaging device first meshes with the guide gear, and the guide gear guides and supports the transmission head from the bottom. Due to the support of the guide gear, the transmission head always remains in a horizontal state, so that the transmission head can more accurately engage with the coupling protrusion of the rotational force transmission component, thereby achieving smooth installation of the processing box and stable transmission of the driving force. In addition, since the guide gear and the developing roller can rotate relative to each other in the circumferential direction, and the developing roller gear and the developing roller are relatively fixed in the circumferential direction, after the processing box is installed, during the working process, the guide gear is always in a free-rotating idling state, which will not affect the transmission of the driving force.

[0009] A preferred solution is that an end cover is provided at one end of the box body, an opening is provided at the end cover near the coupling protrusion, and a part of the guide gear is exposed from the opening.

[0010] A further solution is that the coupling protrusion is arranged at the axial end of the photosensitive drum gear, and the photosensitive drum gear, the developing roller gear and the guide gear are located on the same side of the box body.

[0011] A further solution is that a shaft head is also provided at the axial end of the developing roller, the shaft head extends along the axial direction of the developing roller, and the cross-section of the shaft head is non-circular; a first shaft hole is provided along the axial direction through the developing roller gear, the cross-sectional shape of the first shaft hole is the same as the cross-sectional shape of the shaft head, and the developing roller gear is sleeved on the shaft head through the first shaft hole; a second shaft hole is provided along the axial direction through the guide gear, the cross-sectional shape of the second shaft hole is circular, the guide gear is sleeved on the shaft head through the second shaft hole, and the guide gear is located on the side of the developing roller gear away from the developing roller.

[0012] A preferred solution is that the processing box also includes a stirring frame and an intermediate gear, the axial end of the stirring frame is provided with a stirring frame gear, and the stirring frame gear is connected to the developing roller gear through the intermediate gear.

[0013] To achieve the above second objective, the present invention provides an imaging system, including an imaging device and the above processing box, wherein the processing box is detachably installed in the imaging device.

[0014] A preferred solution is that the imaging device includes a main body, a box magazine is arranged in the main body, and a transmission head is arranged on the side wall of the box magazine; the transmission head includes a gear portion and a coupling recess, the gear portion is located on the peripheral wall of the transmission head, and the coupling recess is located at the axial end of the transmission head; the gear portion is meshed with a guide gear, the guide gear supports the transmission head in the radial direction, and the coupling protrusion is engaged with the coupling recess.

[0015] A further solution is that a door cover is provided on the opening of the box bin, and the door cover is connected to the transmission head. When the door cover is closed, the transmission head is driven to extend toward the inside of the box bin, and when the door cover is opened, the transmission head is driven to retract toward the side wall of the box bin.

[0016] To achieve the third purpose mentioned above, the present invention provides a method for installing the above-mentioned processing box, wherein the processing box can be detachably installed in an imaging device, and the imaging device includes a main body, a box magazine is arranged in the main body, and a transmission head is arranged on the side wall of the box magazine, and the transmission head includes a gear part and a coupling recess, the gear part is located on the peripheral wall of the transmission head, and the coupling recess is located at the axial end of the transmission head; the processing box is such as the above-mentioned processing box; the installation method includes the following steps: the gear part is meshed with the guide gear, and the guide gear supports the transmission head in the radial direction; the coupling protrusion is engaged with the coupling recess.

[0017] To achieve the fourth purpose mentioned above, the present invention provides a working method of the above-mentioned processing box, wherein the processing box can be detachably installed in an imaging device, and the imaging device includes a main body, a box magazine is arranged in the main body, and a transmission head is arranged on the side wall of the box magazine, and the transmission head includes a gear part and a coupling recess, the gear part is located on the peripheral wall of the transmission head, and the coupling recess is located at the axial end of the transmission head; the working method includes the following steps: the coupling recess engages with the coupling protrusion and drives the photosensitive drum and the developing roller to rotate, and the gear part drives the guide gear to idle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the processing box embodiment of the present invention and the transmission head in the imaging device after matching.

[0019] Figure 2 It is a structural diagram of a transmission head in an imaging device.

[0020] Figure 3 It is a partial view of an embodiment of a process box of the present invention.

[0021] Figure 4 It is a left side view of the process box embodiment of the present invention

[0022] Figure 5 1 is a structural diagram of a rotational force transmission assembly and a developing roller gear assembly in an embodiment of a processing cartridge of the present invention.

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0024] See also Figures 1 to 5 The processing box is detachably installed in the imaging device. The electronic photographic imaging device includes a main body, a cartridge compartment is arranged in the main body, a door cover is arranged on the compartment opening of the cartridge compartment, a transmission head 10 is arranged on the side wall of the cartridge compartment, the door cover is connected to the transmission head 10, when the door cover is closed, the transmission head 10 extends toward the inside of the cartridge compartment, and when the door cover is opened, the transmission head 10 retracts toward the side wall. The transmission head 10 includes a gear part 101 and a coupling recess 102, the gear part 101 is located on the peripheral wall of the transmission head 10, and the coupling recess 102 is located at the axial end of the transmission head 10.

[0025] The processing box includes a box body 1, a photosensitive drum 2, a developing roller 3, a stirring frame (not shown) and two intermediate gears 7. The photosensitive drum 2, the developing roller 3 and the stirring frame are all rotatably supported between the two end walls of the box body 1. A rotation force transmission component 4 is provided at one axial end of the photosensitive drum 2, a developing roller gear component 5 is provided at one axial end of the developing roller 3, and a stirring frame gear 61 is provided at the axial end of the stirring frame. The rotation force transmission component 4, the stirring frame gear 61 and the developing roller gear component 5 are located on the same side of the box body 1. An end cover 11 is provided at one end of the box body 1, and the end cover 11 covers the outside of the developing roller gear component 5 and the rotation force transmission component 4. An opening 112 is provided at the end cover 11 near the rotation force transmission component 4, and a part of the developing roller gear component 5 is exposed from the opening 112.

[0026] The rotation force transmission assembly 4 includes a photosensitive drum gear 41 and a coupling protrusion 42 . The coupling protrusion 42 is disposed at an axial end of the photosensitive drum gear 41 . The coupling protrusion 42 is substantially in the shape of a triangular prism.

[0027] The developing roller gear assembly 5 comprises a developing roller gear 51 and a guide gear 52 which are coaxially arranged. The guide gear 52 is a helical gear. The guide gear 52 is located on the side of the developing roller gear 51 away from the developing roller 3, and in the axial direction of the photosensitive drum 2, the guide gear 52 is located on the side of the rotation force transmission assembly 4 away from the photosensitive drum 2.

[0028] The developing roller gear 51 includes a primary gear 511 and a secondary gear 512 which are coaxially arranged, the secondary gear 512 being located between the primary gear 511 and the guide gear 52, the photosensitive drum gear 41 being meshed with the primary gear 511, and the stirring frame gear 61 being transmission-connected with the secondary gear 512 via two intermediate gears 7. In the axial direction of the photosensitive drum 2, the height of the primary gear 511 is greater than the height of the photosensitive drum gear 41, so that the photosensitive drum gear 41 can stably transmit the driving force.

[0029] The developing roller gear 51 is relatively fixed to the developing roller 3 in the circumferential direction, and the guide gear 52 can rotate relatively to the developing roller 3 in the circumferential direction. The axial end wall of the developing roller 3 is also provided with a shaft head 31, which extends along the axial direction of the developing roller 3. The outer contour of the cross section of the shaft head 31 is surrounded by a major arc and a straight line. The developing roller gear 51 is provided with a first shaft hole extending through the axial direction. The shape of the cross section of the first shaft hole is the same as the shape of the cross section of the shaft head 31. The developing roller gear 51 is sleeved on the shaft head 31 through the first shaft hole and is connected with the shaft head 31, so that the developing roller gear 51 and the developing roller 3 can be relatively fixed in the circumferential direction. A support groove 111 is provided on the end cover 11, and the shaft head 31 extends into the support groove 111 to support the developing roller 3.

[0030] The guide gear 52 is provided with a cylindrical second shaft hole 521 extending therethrough in the axial direction. The guide gear 52 is sleeved on the shaft head 31 through the second shaft hole 521 . The guide gear 52 can rotate around the axis of the shaft head 31 relative to the shaft head 31 .

[0031] The method for installing the processing box includes the following steps.

[0032] First, after the process cartridge is installed in the cartridge compartment, the door cover of the imaging device is in an open state, and the transmission head 10 is in a retracted position.

[0033] Next, after closing the door cover, when the transmission head 10 moves along the axis toward the box body 1, the gear portion 101 of the transmission head 10 only meshes with the guide gear 52, and the guide gear 52 can support the transmission head 10 in the radial direction so that the axis of the transmission head 10 remains horizontal.

[0034] Then, as the transmission head 10 moves further, the coupling protrusion 42 and the coupling recess 102 are butted together along the axial direction, thereby achieving accurate engagement of the transmission head 10 with the rotational force transmission assembly 4 .

[0035] After the imaging device starts working, the transmission head 10 rotates, and the coupling recess 102 of the transmission head 10 drives the developing roller gear 51 to rotate, and drives the developing roller 3 to rotate. At the same time, the gear portion 101 of the transmission head 10 drives the guide gear 52 to rotate.

[0036] As can be seen from the above, due to the provision of the guide gear, when the processing box is installed, the gear portion of the transmission head in the imaging device first meshes with the guide gear, and the guide gear guides and supports the transmission head from the bottom. Due to the support of the guide gear, the transmission head always remains in a horizontal state, so that the transmission head can more accurately engage with the coupling protrusion of the rotational force transmission component, thereby achieving smooth installation of the processing box and stable transmission of the driving force. In addition, since the guide gear and the developing roller can rotate relative to each other in the circumferential direction, and the developing roller gear and the developing roller are relatively fixed in the circumferential direction, after the processing box is installed, during the working process, the guide gear is always in a free-rotating idling state, which will not affect the transmission of the driving force.

[0037] In addition, the primary gear and the secondary gear may be two separate gears arranged axially, or may be one integrally formed gear. The guide gear may also be a spur gear. The outer contour of the cross section of the shaft head may also be a non-circular shape of other irregular shapes. The number of intermediate gears may also be one or more than two, or there may be no intermediate gear and the agitator gear may directly mesh with the secondary gear. The above changes can also achieve the purpose of the present invention.

[0038] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are 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. A process cartridge, comprising a cartridge body, a photosensitive drum and a developing roller, wherein both the photosensitive drum and the developing roller are rotatably supported between the two end walls of the cartridge body, a photosensitive drum gear and a coupling protrusion are provided at the axial end of the photosensitive drum, a developing roller gear is provided at the axial end of the developing roller, and the developing roller gear is drivingly connected with the photosensitive drum gear; Features: The processing box further comprises a guide gear, which is located on a side of the coupling protrusion away from the photosensitive drum in the axial direction of the photosensitive drum, and is located on a radially outer side of the coupling protrusion and close to the coupling protrusion in the radial direction of the photosensitive drum; The guide gear is freely rotatable relative to a shaft supporting the guide gear.

2. The process cartridge according to claim 1, wherein: An end cover is provided at one end of the box body, and an opening is provided on the end cover near the coupling protrusion, and a part of the guide gear is exposed from the opening.

3. The process cartridge according to claim 2, wherein: The coupling protrusion is arranged at the axial end of the photosensitive drum gear, and the photosensitive drum gear, the developing roller gear and the guide gear are located on the same side of the box body.

4. The process cartridge according to claim 3, wherein: The axial end of the developing roller is also provided with an axis head, the axis head extends along the axial direction of the developing roller, and the cross section of the axis head is non-circular; The developing roller gear is provided with a first shaft hole penetrating along the axial direction, the cross-sectional shape of the first shaft hole is the same as the cross-sectional shape of the shaft head, and the developing roller gear is sleeved on the shaft head through the first shaft hole; The guide gear is provided with a second shaft hole axially extending therethrough, the cross section of the second shaft hole is circular, the guide gear is sleeved on the shaft head through the second shaft hole, and the guide gear is located on the side of the developing roller gear away from the developing roller.

5. The process cartridge according to any one of claims 1 to 4, characterized in that: The processing box also includes a stirring frame and an intermediate gear. The axial end of the stirring frame is provided with a stirring frame gear, and the stirring frame gear is connected to the developing roller gear through the intermediate gear.

6. An imaging system, characterized in that The invention comprises an image forming device and a process cartridge as claimed in any one of claims 1 to 5, wherein the process cartridge is detachably mounted in the image forming device.

7. The imaging system according to claim 6, characterized in that: The imaging device comprises a main body, a cartridge compartment is arranged in the main body, and a transmission head is arranged on a side wall of the cartridge compartment; The transmission head comprises a gear portion and a coupling recess, wherein the gear portion is located on a peripheral wall of the transmission head, and the coupling recess is located at an axial end of the transmission head; The gear portion is meshed with the guide gear which supports the transmission head in a radial direction, and the coupling protrusion is engaged with the coupling recess.

8. The imaging system according to claim 7, characterized in that: A door cover is provided on the opening of the box bin, and the door cover is connected to the transmission head. When the door cover is closed, the transmission head is driven to extend toward the inside of the box bin, and when the door cover is opened, the transmission head is driven to retract toward the side wall of the box bin.

9. A method for installing a process cartridge, wherein the process cartridge is detachably installed in an imaging device, wherein the imaging device comprises a main body, wherein a cartridge compartment is disposed in the main body, wherein a transmission head is disposed on a side wall of the cartridge compartment, wherein the transmission head comprises a gear portion and a coupling recess, wherein the gear portion is located on a peripheral wall of the transmission head, and wherein the coupling recess is located at an axial end of the transmission head; The process cartridge according to any one of claims 1 to 5; It is characterized in that The installation method comprises the following steps: The gear portion is meshed with the guide gear, and the guide gear supports the transmission head in the radial direction; The coupling protrusion is engaged with the coupling recess.

10. A working method of a process cartridge, wherein the process cartridge is detachably installed in an imaging device, wherein the imaging device comprises a main body, wherein a cartridge compartment is disposed in the main body, wherein a transmission head is disposed on a side wall of the cartridge compartment, wherein the transmission head comprises a gear portion and a coupling recess, wherein the gear portion is located on a peripheral wall of the transmission head, and wherein the coupling recess is located at an axial end of the transmission head; The process cartridge according to any one of claims 1 to 5; It is characterized in that The working method comprises the following steps: The coupling recess is engaged with the coupling protrusion and drives the photosensitive drum and the developing roller to rotate, and the gear portion drives the guide gear to rotate idly.

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