Processing box
By discharging the development unit and the drum unit in the front and rear directions of the processing box, and setting the tilt surface in the shaped frame body to protect the pink knife, the problem of being easily damaged by the display roller and the pink knife. Treat the structure of the box.
Patent Information
- Application Number
- CN202421073079.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-05-15
AI Technical Summary
In the existing processing boxes, the developing roller and powder output knife are susceptible to bumps and contamination, resulting in wear or damage, affecting the service life. At the same time, the processing boxes are complex in structure and large in size.
A process cartridge is designed. The developing unit and the drum unit are arranged in the front and rear direction. The developing roller and the photosensitive drum are arranged in the front and rear direction. The rotating axis of the developing roller extends in the first direction, and the rotating axis of the photosensitive drum extends in the same direction. One direction intersects, the developing frame is provided with an inclined surface facing the developing roller, and the powder outlet knife is located behind the inclined surface, which simplifies the structure of the process box.
By protecting the design of the shadow roller and a powder knife, its service life is extended, and the deformation caused by impurities pollution and the impact of external components is avoided, simplifying the structure of the processing box and reducing the volume.
Smart Images
Figure CN222394264U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic photographic imaging, in particular to a processing box. Background Art
[0002] A processing box is an essential component of an electronic photographic imaging device. There is currently a processing box that can be detachably installed in the electronic photographic imaging device, including a drum unit for accommodating waste developer and a developing unit for accommodating developer; the drum unit includes a drum frame and a photosensitive drum rotatably arranged in the drum frame, and the developing unit includes a developing frame, a developing roller rotatably arranged in the developing frame, and a powder discharge knife fixedly arranged in the developing frame, the developing frame is used to accommodate carbon powder, the developing roller is used to provide carbon powder to the photosensitive drum, thereby developing the electrostatic latent image on the photosensitive drum, and the powder discharge knife is used to control the thickness of the carbon powder layer on the surface of the developing roller.
[0003] In the prior art, the processing box has a laser port for allowing the laser in the imaging device to enter to irradiate the photosensitive drum. The developing roller and the powder discharge knife in the developing unit are exposed through the laser port, making the developing roller and the powder discharge knife susceptible to bumps and contamination, thereby causing wear or damage and affecting the service life.
[0004] The existing processing box is usually provided with a handle at one end for the operator to take the processing box. However, the provision of the handle makes the processing box complex in structure and large in size. Utility Model Content
[0005] The main purpose of the utility model is to provide a processing box to solve at least one of the above technical problems. The processing box can protect at least a part of the developing roller and the powder discharge knife and extend the service life of the developing roller and the powder discharge knife.
[0006] In order to achieve the above purpose, the utility model specifically adopts the following technical solutions:
[0007] A processing box is detachably installed in an electronic photographic imaging device, the processing box includes a developing unit and a drum unit, the developing unit includes a developing frame and a developing roller rotatably arranged in the developing frame, the developing frame is used to accommodate carbon powder, and the rotation axis of the developing roller extends in a first direction; the drum unit includes a drum frame and a photosensitive drum rotatably arranged in the drum frame, the direction intersecting with the first direction is a front-to-back direction, the developing roller and the photosensitive drum are arranged along the front-to-back direction, the end where the photosensitive drum is located is the front side, and the end where the developing roller is located is the rear side; a first plane P passes through the rotation axis of the photosensitive drum and the rotation axis of the developing roller; the developing frame is provided with an inclined surface facing the developing roller, and along the front-to-back direction, the shortest distance from the inclined surface to the first plane P gradually decreases from front to back.
[0008] Further, the second plane M is perpendicular to the first plane P and passes through the rotation axis of the developing roller, and when the process box is observed along the first direction, the second plane M intersects with the inclined surface.
[0009] Further, the third plane H is perpendicular to the first plane and passes through the rotation axis of the photosensitive drum, and when the process box is observed along the first direction, the third plane H does not intersect the inclined surface.
[0010] Furthermore, the developing unit also includes a powder knife fixedly arranged in the developing frame, and the powder knife is used to control the thickness of the carbon powder layer on the surface of the developing roller. When the processing box is observed along the first direction, the powder knife is located on the rear side of the second plane M.
[0011] Further, the inclined surface has a first end point and a second end point, the shortest distance from the first end point to the first plane P is greater than the shortest distance from the second end point to the first plane, the fourth plane N is perpendicular to the first plane P and passes through the first end point, and when the processing box is observed along the first direction, at least a portion of the developing roller is located on the rear side of the fourth plane N.
[0012] Furthermore, the powder discharge knife is located at the rear side of the fourth plane N. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 and Figure 2 It is a three-dimensional diagram of the processing box involved in the utility model.
[0014] Figure 3 and Figure 4 It is an exploded schematic diagram of some components in the processing box involved in the utility model.
[0015] Figure 5 The utility model is an exploded schematic diagram of a photosensitive drum in a processing box.
[0016] Figure 6 The utility model relates to a processing box edge Figure 2 Sectional view after cutting along the AA direction.
[0017] Figure 7 It is a three-dimensional diagram of a bottom shell in a processing box involved in the utility model. DETAILED DESCRIPTION
[0018] The following further describes in detail the structure and other aspects of the processing box involved in the present invention through specific implementations and with reference to the accompanying drawings.
[0019] like Figure 1-Figure 4As shown, the processing box 1 in this embodiment can be detachably installed in an electronic photographic imaging device (hereinafter referred to as "imaging device"), and the processing box 1 includes a developing unit 10 for accommodating toner and a drum unit 20 for accommodating waste toner; the developing unit 10 includes a developing frame 11 and a developing roller 12 rotatably arranged in the developing frame 11, and the developing frame 11 has a powder bin 113 for accommodating toner; the drum unit 20 includes a drum frame 21 and a photosensitive drum 22 rotatably arranged in the drum frame 21; the developing roller 12 is used to supply toner to the photosensitive drum 22; the processing box 1 also includes a laser port 1a for allowing a laser beam emitted by the imaging device to irradiate the photosensitive drum 22, and the laser port 1a is located between the developing frame 11 and the drum frame 21. After the laser beam carrying imaging information irradiates the surface of the charged photosensitive drum 22, an electrostatic latent image is formed on the surface of the photosensitive drum 22.
[0020] To make the following description clearer, the extension direction of the rotation axis L of the developing roller 12 is defined as the first direction / left-right direction, the direction intersecting the first direction is defined as the second direction / front-back direction, the developing roller 12 and the photosensitive drum 22 are arranged along the second direction, and the end where the photosensitive drum 22 is located is defined as the front side, and the end where the developing roller 12 is located is defined as the rear side.
[0021] like Figure 4 As shown, the developing unit 10 further includes a developing roller gear 121 coaxially arranged with the developing roller 12; Figure 5 As shown, the photosensitive drum 22 includes a photosensitive cylinder 22a and a driving force receiving member 22b provided for receiving a rotational driving force output by the imaging device, the driving force receiving member 22b includes a driving gear 221 for engaging with the developing roller gear 121, a photosensitive drum gear 222 for receiving a rotational driving force to drive the photosensitive drum 22 to rotate, and a gear shaft 223, the photosensitive drum 22 is rotatably supported by the gear shaft 223; along a first direction, the photosensitive drum gear 222 is farther away from the photosensitive cylinder 22a than the driving gear 221; along a radial direction of the driving force receiving member 22b, the driving gear 221 and the photosensitive drum gear 222 are located outside the gear shaft 223; the driving gear 221, the photosensitive drum gear 222 and the gear shaft 223 are formed as one body, and the driving force receiving member 22b is used to drive the photosensitive cylinder 22a to rotate.
[0022] The processing box 1 has a first end cover 30 and a second end cover 40 respectively located at two ends in the first direction; the photosensitive drum gear 222 is used to receive the rotational driving force in the imaging device and rotate. Since the photosensitive drum gear 222 and the driving gear 221 are formed as one body, the driving gear 221 rotates together with the photosensitive drum gear 222, thereby driving the developing roller gear 121 meshed with the driving gear 221 to rotate, and then driving the developing roller 12 and the photosensitive drum 22 to rotate around their respective rotation axes; along the first direction, the end where the photosensitive drum gear 222 is located is the driving end, and the end opposite to the driving end is the non-driving end. The second end cover 40 is arranged at the driving end, which is used to cover at least a part of the developing roller gear 121 and at least a part of the photosensitive drum gear 222. The first end cover 30 is arranged at the non-driving end, so the first end cover 30 can be called the non-driving end end cover, and the second end cover 40 can be called the driving end end cover; along the first direction, the non-driving end end cover 30 is located on the left side of the driving end end cover 40, and the driving end end cover 40 is located on the right side of the non-driving end end cover 30.
[0023] The processing box 1 adopts a contact developing method, and the developing roller 12 and the photosensitive drum 22 are always in contact with each other; along the first direction, the processing box 1 also includes at least one elastic element 13 and a first boss 111 and a second boss 112 respectively connected to the developing frame 11, and the elastic element 13 is used to keep the developing roller 12 and the photosensitive drum 22 in contact with each other, wherein the first boss 111 is located at the non-driving end, and the second boss 112 is located at the driving end, and the first boss 111 and the second boss 112 form a hollow structure, which can Prevent displacement when the elastic element 13 is elastically deformed; at the non-driving end, one end of the elastic element 13 abuts on the non-driving end end cover 30, and the other end abuts on the first boss 111; at the driving end, one end of the elastic element 13 abuts on the driving end end cover 40, and the other end abuts on the second boss 112; the first boss 111 and the second boss 112 are used to prevent displacement when the elastic element 13 is elastically deformed; preferably, the elastic element 13 is set to 2, which can be set to rubber, compression spring or tension spring, etc.
[0024] like Figure 6 and Figure 7 As shown, the developing unit 10 further includes a powder knife 14 fixedly disposed in the developing frame 11 , and the powder knife 14 is used to control the thickness of the carbon powder layer on the surface of the developing roller 12 .
[0025] The developing frame 11 is also provided with an inclined surface 116 facing the developing roller 12; the developing frame 11 includes a surface cover 114 and a bottom shell 115 combined with each other, and a powder bin 113 is formed between the two. The developing roller 12 and the powder discharge knife 14 are both arranged on the bottom shell 115, and the inclined surface 116 is also located on the bottom shell; the first plane P passes through the rotation axis of the photosensitive drum 22 and the rotation axis of the developing roller 12, and along the second direction, the shortest distance from the inclined surface 116 to the first plane P gradually decreases from front to back; the second plane M is perpendicular to the first plane P and passes through the rotation axis of the developing roller 12, and the first plane P is perpendicular to the first plane P. The three planes H are perpendicular to the first plane P and pass through the rotation axis of the photosensitive drum 22. When the processing box 1 is observed along the first direction, the second plane M intersects with the inclined surface 116, and the third plane H does not intersect with the inclined surface 116. The powder discharge knife 14 is located on the rear side of the second plane M. In this way, the powder discharge knife 14 is protected by the inclined surface 116, impurities are not easy to fall onto the powder discharge knife 14, and the powder discharge knife 14 is not easy to be deformed by the impact of external parts. The inclined surface 116 also makes it easy for the operator to grab the processing box 1, and the processing box 1 does not need to be provided with a handle, which is conducive to simplifying the structure of the processing box 1.
[0026] When the processing box 1 is observed along the first direction, the inclined surface 116 has a first end point A and a second end point B, and the shortest distance from the first end point A to the first plane P is greater than the shortest distance from the second end point B to the first plane P; the fourth plane N is perpendicular to the first plane P and passes through the first end point A, and when observed from the laser port 1a along the direction parallel to the fourth plane N, at least a portion of the developing roller 12 cannot be observed; when the processing box 1 is observed along the first direction, at least a portion of the developing roller 12 is located on the rear side of the fourth plane N, and the powder discharge knife 14 is also located on the rear side of the fourth plane N, so that at least a portion of the developing roller 12 and the powder discharge knife 14 can be protected by the inclined surface 116. This design can not only extend the service life of the developing roller 12 and the powder discharge knife 14, but also prevent impurities from contaminating the developing roller 12 and the powder discharge knife 14, and avoid the developing roller 12 and the powder discharge knife 14 from being deformed by the impact of external components.
Claims
1. A processing box, which can be detachably installed in an electronic photographic imaging device, wherein the processing box includes a developing unit and a drum unit, wherein the developing unit includes a developing frame and a developing roller rotatably arranged in the developing frame, wherein the developing frame is used to accommodate carbon powder, and the rotation axis of the developing roller extends in a first direction; the drum unit includes a drum frame and a photosensitive drum rotatably arranged in the drum frame, wherein the direction intersecting the first direction is a front-to-back direction, wherein the developing roller and the photosensitive drum are arranged along a second direction, wherein the end where the photosensitive drum is located is the front side, and the end where the developing roller is located is the rear side; wherein the first plane passes through the rotation axis of the photosensitive drum and the rotation axis of the developing roller; wherein the first plane passes through the rotation axis of the photosensitive drum and the rotation axis of the developing roller; wherein the first plane passes through the rotation axis of the photosensitive drum and the rotation axis of the developing roller; wherein the first plane passes through the rotation axis of the developing roller and the rotation axis of the developing roller; wherein the first plane passes through the rotation axis of the developing roller and the rotation axis of the developing drum ... The developing frame is provided with an inclined surface facing the developing roller, and along the front-to-back direction, the shortest distance from the inclined surface to the first plane gradually decreases from front to back.
2. The process cartridge according to claim 1, wherein: The second plane is perpendicular to the first plane and passes through the rotation axis of the developing roller, and when the process box is viewed along the first direction, the second plane intersects the inclined surface.
3. The process cartridge according to claim 2, wherein: The third plane is perpendicular to the first plane and passes through the rotation axis of the photosensitive drum. When the process box is observed along the first direction, the third plane does not intersect the inclined surface.
4. The process cartridge according to claim 2, wherein: The developing unit further comprises a powder discharge knife fixedly arranged in the developing frame, the powder discharge knife is used to control the thickness of the carbon powder layer on the surface of the developing roller, and when the processing box is observed along the first direction, the powder discharge knife is located at the rear side of the second plane.
5. The process cartridge according to claim 4, wherein: The inclined surface has a first end point and a second end point, the shortest distance from the first end point to the first plane is greater than the shortest distance from the second end point to the first plane, the fourth plane is perpendicular to the first plane and passes through the first end point, and when the processing box is observed along the first direction, at least a portion of the developing roller is located on the rear side of the fourth plane.
6. The process cartridge according to claim 5, wherein: The powder discharge knife is located at the rear side of the fourth plane.