Processing box

Abstract

The utility model discloses a processing box, which comprises a frame, a developing roller; a photosensitive drum; a developing coupling portion; a chip; the first frame comprises a main body part and a first expansion part which are communicated with each other and can accommodate a developing agent, and in the second direction, the first expansion part is located at the third end of the frame; when the process cartridge and another process cartridge are mounted together in a cartridge holder that is movable between the outside and the inside of the image forming apparatus, the process cartridge is mounted in a direction in which the cartridge holder moves to the inside of the image forming apparatus as viewed in the second direction. And the other processing box which is positioned on the downstream side of the processing box and is adjacent to the processing box has an overlapped part with the first expansion part.

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] In a conventional imaging device 1, a processing device (i.e., a developing box) capable of acting on a photosensitive drum and the photosensitive drum are integrated into a box, and the box is detachably mounted on the imaging device 1. Depending on the type of box, the user can perform maintenance operations on the device without relying on service personnel, thereby significantly improving operability. Therefore, this type of box is widely used in the imaging device 1.

[0003] The prior art shows a processing box that can cooperate with the imaging device 1 to perform printing tasks, but the developer capacity in the powder bin of the processing box is small, which will undoubtedly increase the frequency of users replacing the processing box and increase the user's usage cost. Utility Model Content

[0004] In order to solve the above problems, the present invention provides a new processing box, which is mainly achieved through the following technical solutions:

[0005] A process cartridge is detachably mounted in an imaging device, the process cartridge comprising:

[0006] A frame having a first end and a second end opposite to each other in a first direction, the frame comprising a first frame and a second frame;

[0007] a developing roller supported on the first frame;

[0008] a photosensitive drum supported on the second frame and rotatable about a photosensitive drum rotation axis extending along the first direction;

[0009] a developing coupling portion provided at the first end of the frame, the developing coupling portion being capable of receiving a driving force of the image forming device to transmit the driving force to the developing roller;

[0010] a chip having an electrical contact surface capable of electrically contacting the imaging device, wherein the electrical contact surface is located at the first end of the frame in the first direction, the electrical contact surface and the photosensitive drum are arranged in a second direction perpendicular to the first direction, the frame has a third end and a fourth end opposite to each other in the second direction, and the electrical contact surface is closer to the third end of the frame than to the photosensitive drum;

[0011] The first frame includes a main body part and a first expansion part which are connected to each other and can accommodate the developer. In the second direction, the first expansion part is located at the third end of the frame; when the processing box and other processing boxes are installed together in a box rack that can move between the outside and the inside of the imaging device, when viewed in the second direction, in the direction in which the box rack moves to the inside of the imaging device, the other processing boxes located on the downstream side of the processing box and arranged adjacent to the processing box have an overlapping part with the first expansion part.

[0012] Furthermore, the first expansion portion is configured as a hollow protrusion protruding from the main body portion in a third direction away from the developing roller, and the third direction is perpendicular to the first direction and the second direction.

[0013] Furthermore, the first expansion parts have at least two, and in the first direction, the two first expansion parts are respectively located at the first end and the second end of the frame, and a first avoidance groove is formed between the two first expansion parts. In the first direction, the first avoidance groove is roughly located in the middle position of the frame. When the processing box is installed in the imaging device, the first avoidance groove can be used to avoid the handles of the other processing boxes.

[0014] Furthermore, the first avoidance groove has a length L1 in the first direction, wherein 75 mm < L1 < 110 mm.

[0015] Furthermore, the first expansion portion has an end point, and measured in a third direction perpendicular to the first direction and the second direction, the maximum distance between the end point of the first expansion portion and the rotation axis of the photosensitive drum is P, wherein 45mm<P<85mm.

[0016] Furthermore, 55mm<P<75mm.

[0017] Furthermore, the first frame also includes a second expansion portion that can accommodate the developer. In the second direction, the second expansion portion is located at the third end of the frame. The second expansion portion is constructed as a hollow protrusion that protrudes from the main body portion in the third direction toward the direction close to the developing roller, and the third direction is perpendicular to the first direction and the second direction.

[0018] Furthermore, the second expansion parts have at least two, and in the first direction, the two second expansion parts are respectively located at the first end and the second end of the frame, and a second avoidance groove is formed between the two second expansion parts. When the processing box is installed in the imaging device, the second avoidance groove can be used to avoid the laser of the imaging device.

[0019] Furthermore, there are at least two second expansion parts. In the first direction, the two second expansion parts are respectively located at the first end and the second end of the frame, and a second avoidance groove is formed between the two second expansion parts. The length of the second avoidance groove in the first direction is greater than the length of the first avoidance groove in the first direction.

[0020] Furthermore, the second avoidance groove has a length L2 in the first direction, wherein 210 mm < L2 < 230 mm.

[0021] The utility model provides a processing box, which is provided with a first expansion part and a second expansion part, thereby increasing the capacity of the first frame. Compared with the existing technology, it can accommodate more developer, reduces the frequency of users replacing the processing box, and thus reduces the user's usage cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the process cartridge of the present invention being installed in front of the cartridge frame of the imaging device 1;

[0023] Figure 2 This is a schematic diagram of the process cartridge of the present invention being installed in the cartridge holder of the imaging device 1;

[0024] Figure 3 This is a schematic diagram of the processing box from a first angle in the present utility model;

[0025] Figure 4 This is a schematic diagram of the processing box from the second angle in the present utility model;

[0026] Figure 5 This is a schematic diagram of the processing box from a third angle in the present utility model;

[0027] Figure 6 This is a schematic diagram of the processing box from the fourth angle in the present utility model;

[0028] Figure 7 This is a fifth angle schematic diagram of the processing box in the utility model;

[0029] Figure 8 This is a sixth angle schematic diagram of the processing box in the present utility model;

[0030] Figure 9 This is a schematic diagram of the process cartridge of the present invention being installed in a cartridge frame of an imaging device;

[0031] Figure 10 This is a schematic diagram of the process box in the present invention before being cut away;

[0032] Figure 11 This is a schematic sectional view of the processing box AA in the present utility model;

[0033] Figure 12 It is a cross-sectional schematic diagram of the processing box BB in the present utility model. DETAILED DESCRIPTION

[0034] In order to better describe and understand the processing box 100 in the present invention, the direction of the processing box 100 will be defined. The longitudinal direction of the processing box 100 is the first direction, which is also the direction in which the photosensitive drum rotation axis A1 of the photosensitive drum 101 extends. In the first direction, the developing connecting part 131 is arranged at the first end of the processing box 100; the second direction is perpendicular to the first direction, and the electrical contact surfaces 102a of the photosensitive drum 101 and the chip 102 are arranged in the second direction. In the second direction, the electrical contact surface 102a is arranged at the third end of the processing box 100, and in the second direction, the photosensitive drum 101 is arranged at the fourth end of the processing box 100; the third direction is perpendicular to the first direction and the second direction.

[0035] like Figure 1-2 As shown, a processing box 100 in the present invention is shown. The processing box 100 can be detachably installed in the imaging device 1. The imaging device 1 includes a box frame 3. The box frame 3 can be moved along the third direction to be installed in the cavity 2 of the imaging device or removed from the cavity 2. The box frame 3 includes four box accommodating portions 4 arranged at intervals in the third direction. The four accommodating portions 4 can be used to respectively accommodate and support the processing box 100 with black, blue, yellow and magenta developers. The processing box 100 will be introduced in detail below.

[0036] The process cartridge 100 includes a developing unit 110 and a drum unit 120 which are connected to each other.

[0037] The developing unit 110 includes a first frame and a developing roller 108 rotatably supported on the first frame 111, the first frame includes a accommodating portion for accommodating a developer; the processing box 100 also includes a developing coupling portion 131 arranged at a first end of the first frame, the developing coupling portion 131 can be coupled with a first driving force applying member of the imaging device 1 and can receive the rotational force in the imaging device 1 to rotate, the developing coupling portion 131 can be operably connected to the developing roller 108 and can transmit the rotational force to the developing roller 108, and the developing roller 108 can rotate around the rotation axis of the developing roller 108 extending along the first direction.

[0038] The drum unit 120 includes a second frame and a photosensitive drum 101 rotatably supported on the second frame, the photosensitive drum 101 can rotate around the photosensitive drum rotation axis A1 extending in the first direction, the second frame includes a frame main body portion 121c for accommodating waste developer and a non-driving side protective cover 121a and a driving side protective cover 121b respectively arranged on the first two sides of the frame main body portion 121c, the frame main body portion 121c, the non-driving side protective cover 121a and the driving side protective cover 121b are integrally formed; the processing cartridge 100 also includes a drum coupling portion 132 arranged at a first end of the first frame, the drum coupling portion 132 can be coupled to the second driving force applying member of the imaging device 1 and can receive the second driving force applying member. The drum coupling portion 132 is operably connected to the photosensitive drum 101 and can transmit the rotational force to the photosensitive drum 101. The photosensitive drum 101 can rotate around the photosensitive drum rotation axis extending along the first direction; a handle 118 and a chip 102 are also provided at the third end of the processing box 100. The user can grasp the handle 118 to facilitate moving the box. The chip 102 has an electrical contact surface 102a which is arranged at the second end of the processing box 100 in the first direction and the third end of the processing box 100 in the second direction and can be electrically contacted with the imaging device 1. The chip 102 can establish a communication connection with the imaging device 1 through the electrical contact surface 102a and the imaging device 1.

[0039] When the processing cartridge 100 performs the printing operation, the developer contained in the first frame is transported to the developing roller 108. The developing roller 108 can transport the developer carried on it to the photosensitive drum 101 by contacting the photosensitive drum 101, thereby developing the electrostatic latent image on the photosensitive drum 101. The photosensitive drum 101 transfers the developed image to the transfer belt, and finally the transfer belt transfers the image to the paper to complete the entire printing process. Therefore, it can be seen that when the processing cartridge 100 performs the printing operation, the developing roller 108 and the photosensitive drum 101 are in contact. However, since the outer surface of the developing roller 108 is made of rubber as the main material, it is easy to cause irreversible deformation after long-term contact with the photosensitive drum 101, thereby reducing the printing quality of the processing cartridge 100 and causing printing defects. Therefore, the processing cartridge 200 is further provided with a separation protrusion 105, which is operably connected to the first frame of the developing unit 110 On the top, the separation protrusion 105 has a surface arranged at the second end of the processing box 100 in the first direction and the fourth end of the processing box 100 in the second direction, namely, the force receiving surface 105a, a portion of the force receiving surface 105a is configured to receive a force to move the first frame from the first position to the second position, and the developing roller 108 supported on the first frame will also move, so that the developing roller 108 and the photosensitive drum 101 can move from the developing position to the phase separation position, that is, the first position is the position where the developing roller 108 can transport the developer carried thereon to the photosensitive drum 101 for development, and the second position is the position where the developing roller 108 and the photosensitive drum 101 are at least partially separated; therefore, when the processing box 100 does not need to perform a printing task, the developing roller 108 and the photosensitive drum 101 will be separated and spaced a certain distance apart, thereby avoiding printing defects caused by long-term contact of the developing roller 108 with the photosensitive drum 101.

[0040] Furthermore, in order to solve the problems existing in the processing cartridge in the prior art, the first frame includes a main body portion 124, a first expansion portion 111, and a second expansion portion 121. In the first direction, the first expansion portion 111 and the second expansion portion 121 are located at both ends of the main body portion 124. In the third direction, the first expansion portion 111 and the second expansion portion 121 are arranged opposite to each other. The main body portion 124, the first expansion portion 111, and the second expansion portion 121 all have hollow cavities, and the multiple hollow cavities are connected to each other to form a accommodating portion for accommodating the developer. Specifically, the main body portion 124 is constructed to extend from the first end of the first frame to the third end of the first frame in the first direction. The first expansion portion 111 is preferably two, and in the first direction, the two first expansion portions 111 are respectively located at the first end and the second end of the main body portion 124, and are constructed as a hollow protrusion protruding from the main body portion 124 in the third direction toward a direction away from the developing roller 108. In the first direction, a first avoidance groove 112 is formed between the two first expansion portions 111, and the first avoidance groove 112 is roughly located in the middle position of the first frame, and is connected to the outside of the process cartridge 100 in the third direction at one end away from the developing roller 108 in the third direction, so that when multiple process cartridges 100 are installed in the imaging device 1, the first avoidance groove 112 2 can avoid the handles of the processing cartridges in adjacent positions to avoid interference in the installation of the processing cartridges. Specifically, in the first direction, the first avoidance groove 112 has a length L1, wherein 75 mm < L1 < 110 mm. Furthermore, in order to increase the developer holding capacity of the first frame as much as possible, it is necessary to increase the volume of the first expansion portion 111 as much as possible. Therefore, in order to achieve this technical effect, the first expansion portion 111 and the second expansion portion 121 in the present invention are set to be large enough. Specifically, after multiple processing cartridges 100 are installed in the imaging device 1, when viewed in the second direction, the first expansion portion 111 and the direction in which the cartridge frame 3 moves to the interior of the imaging device 1 are not large enough. The second frames of other processing boxes located on the downstream side of the processing box 100 and arranged adjacent to the processing box 100 have overlapping parts; further, more specifically, the first expansion part 111 has an end point 111a, and measured in the third direction, the farthest distance between the end point 111a of the first expansion part 111 and the photosensitive drum rotation axis C is P, wherein 45mm<P<85mm, which avoids the problem of insufficient expansion capacity of the first expansion part 111 due to P being too small, and also avoids the problem of interference with adjacent processing boxes in the imaging device due to P being too large. Therefore, when P is in the above range, the first expansion part 111 is more appropriate; preferably, 55mm<P<75mm.

[0041] Similarly, in order to increase the developer accommodating space of the first frame as much as possible, there are preferably two second expansion parts 121. In the first direction, the two second expansion parts 121 are respectively located at the first end and the second end of the main part 124. The second expansion part 121 is constructed as a hollow protrusion protruding from the main part 124 in the third direction toward the direction close to the developing roller 108. In the first direction, a second avoidance groove 122 is formed between the two second expansion parts 121. The second avoidance groove 122 extends from the first end of the first frame to the second end of the first frame. In the first direction, the length L2 of the second avoidance groove 122 is greater than the length L1 of the first avoidance groove 112. More specifically, 210mm<L2<230mm. By setting L1 within this range, on the one hand, it can be ensured that L1 will not be too large, and the length of the second expansion part 121 in the first direction will not be excessively compressed, so that the second expansion part 121 can accommodate more developer. On the other hand, The surface can also ensure that when the processing box 100 is installed in the imaging device 1 and performs a printing task, the laser of the imaging device 1 can be irradiated on the photosensitive drum 101 from above the processing box 100 in the second direction without being blocked by the first frame, that is, the second avoidance groove 122 has the function of avoiding the laser of the imaging device 1; further, an inclined surface 123 adjacent to the second avoidance groove 122 is provided on the main body part 124 of the first frame, and at least a part of the inclined surface 123 is provided between the two second expansion parts 121 and is constructed to extend from the first end to the second end of the first frame. When measured in the third direction, the distance between the inclined surface 123 and the sixth end of the frame gradually decreases during the process of extending from the third end to the fourth end of the frame, which makes the cross-section of the main body part 124 between the two second expansion parts 121 in the third direction have a small upper and large lower structure, which can fully avoid the laser of the imaging device 1 while also increasing the developer accommodating space of the main body part 124.

[0042] The present invention provides a processing box 100, which is provided with a first expansion part 111 and a second expansion part 121, which increases the capacity of the first frame. Compared with the existing technology, it can accommodate more developer, reduces the frequency of users replacing processing boxes, and thus reduces the user's usage costs.

Claims

1. A process cartridge, detachably mounted in an imaging device, comprising: A frame having a first end and a second end opposite to each other in a first direction, the frame comprising a first frame and a second frame; a developing roller supported on the first frame; a photosensitive drum supported on the second frame and rotatable about a photosensitive drum rotation axis extending along the first direction; a developing coupling portion provided at the first end of the frame, the developing coupling portion being capable of receiving a driving force of the image forming device to transmit the driving force to the developing roller; a chip having an electrical contact surface capable of electrically contacting the imaging device, wherein the electrical contact surface is located at the first end of the frame in the first direction, the electrical contact surface and the photosensitive drum are arranged in a second direction perpendicular to the first direction, the frame has a third end and a fourth end opposite to each other in the second direction, and the electrical contact surface is closer to the third end of the frame than to the photosensitive drum; It is characterized in that the first frame includes a main body part and a first expansion part which are connected to each other and can accommodate the developer, and in the second direction, the first expansion part is located at the third end of the frame; when the processing box and other processing boxes are installed together in a box rack that can move between the outside and the inside of the imaging device, when viewed in the second direction, in the direction in which the box rack moves to the inside of the imaging device, the other processing boxes located on the downstream side of the processing box and arranged adjacent to the processing box have an overlapping part with the first expansion part.

2. The process cartridge according to claim 1, wherein The first expansion portion is configured as a hollow protrusion protruding from the main body portion in a third direction away from the developing roller, the third direction being perpendicular to the first direction and the second direction.

3. The process cartridge according to claim 1, wherein There are at least two first expansion parts, and in the first direction, the two first expansion parts are respectively located at the first end and the second end of the frame. A first avoidance groove is formed between the two first expansion parts. In the first direction, the first avoidance groove is roughly located in the middle position of the frame. When the processing box is installed in the imaging device, the first avoidance groove can be used to avoid the handles of the other processing boxes.

4. The process cartridge according to claim 3, wherein: The first avoidance groove has a length L1 in the first direction, wherein 75 mm < L1 < 110 mm.

5. The process cartridge according to claim 1, wherein The first expansion portion has an end point, and the maximum distance between the end point of the first expansion portion and the rotation axis of the photosensitive drum measured in a third direction perpendicular to the first direction and the second direction is P, where 45mm<P<85mm.

6. The process cartridge according to claim 5, wherein: 55mm<P<75mm.

7. The process cartridge according to claim 1, wherein The first frame also includes a second expansion portion for accommodating the developer. In the second direction, the second expansion portion is located at the third end of the frame. The second expansion portion is constructed as a hollow protrusion that protrudes from the main body portion in the third direction toward the direction close to the developing roller, and the third direction is perpendicular to the first direction and the second direction.

8. The process cartridge according to claim 7, wherein: There are at least two second expansion parts. In the first direction, the two second expansion parts are respectively located at the first end and the second end of the frame. A second avoidance groove is formed between the two second expansion parts. When the processing box is installed in the imaging device, the second avoidance groove can be used to avoid the laser of the imaging device.

9. The process cartridge according to claim 8, wherein The second avoidance groove has a length L2 in the first direction, wherein 210 mm < L2 < 230 mm.

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