Processing box

Abstract

The utility model relates to a process cartridge detachably installed in an imaging device, the process cartridge comprises: a developing unit having a developing housing and a developing roller rotatably arranged in the developing housing, the developing roller being used for bearing carbon powder accommodated by the developing housing; the photosensitive unit is provided with a photosensitive shell and a photosensitive drum rotatably arranged in the photosensitive shell, and the developing roller supplies carbon powder to the photosensitive drum; the separating part is used for acting with a force applying part in the imaging equipment so as to force the developing roller and the photosensitive drum to be separated from each other, and the separating part is arranged in the photosensitive unit in a sliding manner; the design can accurately position the separating piece and prevent the separating piece from swinging.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic photographic imaging, in particular to a processing box suitable for electronic photographic imaging equipment. Background Art

[0002] The processing box is an essential component of the imaging device, and the processing box includes a developing unit and a photosensitive unit that are combined with each other. The developing unit has a developing housing and a developing roller rotatably arranged in the developing housing, and the developing roller is used to carry carbon powder. The photosensitive unit has a photosensitive housing and a photosensitive drum rotatably arranged in the photosensitive housing. The developing roller supplies carbon powder to the photosensitive drum to develop the electrostatic latent image on the surface of the photosensitive drum. When the processing box is not performing development work, in order to prevent the developing roller and the photosensitive drum from being damaged by long-term contact between the developing roller and the photosensitive drum, the processing box is usually provided with a separating member for forcing the developing roller and the photosensitive drum to separate from each other.

[0003] In the prior art, the existing separating member is rotatably arranged in a shaft-hole matching manner, which causes the separating member to swing easily, resulting in inaccurate positioning of the separating member in the processing box. Utility Model Content

[0004] The utility model provides a processing box adopting the following technical solution to prevent the separation member from swinging.

[0005] In order to achieve the above purpose: the utility model specifically adopts the following technical solutions:

[0006] A processing cartridge is detachably mounted in an imaging device, the processing cartridge comprising: a developing unit having a developing housing and a developing roller rotatably disposed in the developing housing, the developing roller being used to carry carbon powder contained in the developing housing; a photosensitive unit having a photosensitive housing and a photosensitive drum rotatably disposed in the photosensitive housing, the developing roller supplying carbon powder to the photosensitive drum; a separating member being used to act with a force-applying member in the imaging device to force the developing roller and the photosensitive drum to separate from each other, the separating member being slidably disposed in the photosensitive unit.

[0007] Furthermore, the separating member has a rod body and a coupling portion arranged at one end of the rod body, and the coupling portion extends in a direction parallel to the extension direction of the rod body; the processing box also includes a coupled portion formed on the photosensitive shell, and the coupled portion is used to slide with the coupling portion to position the separating member.

[0008] Furthermore, the rotation axis of the developing roller extends in a left-right direction; along the direction intersecting with the extension direction of the rod body, the coupling portion includes a first accommodating portion, a second accommodating portion, and a partition portion located between the first accommodating portion and the second accommodating portion; the coupled portion includes a first coupled portion and a second coupled portion spaced apart, and a groove is formed between the first coupled portion and the second coupled portion; the first coupled portion is used to cooperate with the first accommodating portion, the second coupled portion is used to cooperate with the second accommodating portion, the groove is used to cooperate with the partition portion, and the separator slides along the coupled portion.

[0009] Furthermore, the processing box also has a separation portion located at the other end of the rod body, and the separation portion is provided with a separation force receiving portion, and the separation force receiving portion is provided on the force receiving surface of the separation portion to force the developing roller and the photosensitive drum to separate.

[0010] Furthermore, when observing the process box along the left-right direction, the plane where the force receiving surface is located is not facing upward.

[0011] Furthermore, the processing box further includes a reset member, and the reset member is used to force the separation member to reset.

[0012] Furthermore, the separation piece is formed integrally. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the processing box involved in the utility model.

[0014] Figure 2 It is a three-dimensional diagram of the separation piece involved in the utility model.

[0015] Figure 3 The utility model relates to a processing box, along Figure 1 Sectional view taken along the AA direction.

[0016] Figure 4 This utility model relates to a processing box driving end, along Figure 1 Cross-sectional view taken along the BB direction. DETAILED DESCRIPTION

[0017] The structure and other aspects of the processing box involved in the present invention are further described in detail below through specific implementations and with reference to the accompanying drawings.

[0018] like Figure 1 and Figure 3As shown, the processing box 100 includes a developing unit 1 and a photosensitive unit 2 combined with each other, the developing unit 1 has a developing housing 10 and a developing roller 11 rotatably arranged in the developing housing 10, the developing roller 11 is used to carry the toner accommodated by the developing housing 10, the photosensitive unit 2 has a photosensitive housing 20 and a photosensitive drum 21 rotatably arranged in the photosensitive housing 20, the developing roller 11 supplies toner to the photosensitive drum 21 to develop the electrostatic latent image formed on the surface of the photosensitive drum 21.

[0019] To make the following description clearer, the extension direction of the rotation axis L11 of the developing roller 11 is defined as the left-right direction, the arrangement direction of the developing unit 1 and the photosensitive unit 2 is the front-to-back direction, the direction in which the photosensitive unit 2 points to the developing unit 1 is the front, and the direction opposite to the front is the rear; the direction in which the developing roller 11 and the photosensitive drum 21 are not installed in the processing box 100 is the direction in which the developing roller 11 and the photosensitive drum 21 are installed as the bottom, and the direction opposite to the bottom is the top.

[0020] like Figure 1 As shown, the processing box 100 also includes a first end cover 51 and a second end cover 52 located at the ends in the left and right directions respectively. The developing unit 1 and the photosensitive unit 2 are connected through the first end cover 51 and the second end cover 52. The first end cover 51 and the second end cover 52 can be formed separately relative to the photosensitive housing 20 or can be formed integrally with the photosensitive housing 20. The following description takes the example that the first end cover 51 and the second end cover 52 are both formed integrally with the photosensitive housing 21.

[0021] The processing box 100 also includes a first driving force receiving member 31 and a second driving force receiving member 32 for receiving the rotational driving force output by the imaging device, the first driving force receiving member 31 is used to directly or indirectly drive the developing roller 11 to rotate, and the second driving force receiving member 32 is used to directly or indirectly drive the photosensitive drum 21 to rotate, and the first driving force receiving member 31 and the second driving force receiving member 32 are both exposed from the first end cover 51 to receive the rotational driving force. The end of the processing box 100 for receiving the rotational driving force is defined as the driving end / left side, and the end opposite to the driving end is defined as the non-driving end / right side.

[0022] like Figure 2As shown, the process cartridge 100 further includes a separation mechanism for forcing the developing roller 11 and the photosensitive drum 21 to separate from each other, the separation mechanism including a separation member 41 for acting on a force-applying member in the imaging device, the separation member 41 having a rod body 410 and a coupling portion 411 and a separation portion 412 respectively located at both ends of the rod body 410, the rod body 410 including a first portion 410a and a second portion 410b connected to each other, the separation portion 412 being provided on the first portion 410a, and the coupling portion 411 being provided on the second portion 410b, specifically, along a direction intersecting with the extension direction of the rod body 410, the coupling portion 411 having a first accommodating portion 411a and a second accommodating portion 411b. 1b, a partition portion 411c is provided between the first accommodating portion 411a and the second accommodating portion 411b; the separating portion 412 is provided with a separating force receiving portion 412a, and the separating force receiving portion 412a is provided on the force receiving surface of the separating portion 412 to force the developing roller 11 and the photosensitive drum 21 to separate from each other; in this embodiment, the separating member 41 is formed by integral injection molding, and when the coupling portion 411 is fixed, the separating member 41 as a whole will form a cantilever, and when the separating force receiving portion 412a receives the separation force, the separating portion 412 will drive at least the first part 410a to move relative to the coupling portion 411; the coupling portion 411 extends in a direction parallel to the extension direction of the rod body 410.

[0023] In some embodiments, the first portion 410a is made of an elastic material.

[0024] like Figure 2 、 Figure 3 and Figure 4 As shown, the processing box 100 also includes a coupled portion 201 formed on the photosensitive housing 20, and the coupled portion 201 is used to cooperate with the coupling portion 411 so that the separating piece 41 can slide in the photosensitive unit 2. Specifically, the coupled portion 201 includes a first coupled portion 202 and a second coupled portion 203 that are spaced apart, and a groove 204 is formed between the first coupled portion 202 and the second coupled portion 203. The first coupled portion 202 is used to cooperate with the first accommodating portion 411a, and the second coupled portion 203 is used to cooperate with the second accommodating portion 411b. Further, after the separating piece 41 is installed to the photosensitive housing 20, the partition portion 411c enters the groove 204, the first coupled portion 202 enters the first accommodating portion 411a, and the second coupled portion 203 enters the second accommodating portion 411b, so that the separating piece 41 can only slide in the coupled portion 201, thereby positioning the separating piece 41 and preventing the separating piece 41 from swinging.

[0025] like Figure 1 and Figure 3As shown, the processing box 100 also includes a protective cover 12 located at the driving end, and the protective cover 12 has a protective cover body 120 and a force receiving portion 121 arranged on the protective cover body 120. The force receiving portion 121 is used to cooperate with the separation portion 412 to receive the separation force received by the separation force receiving portion 412a. That is, after the separation force receiving portion 412a receives the separation force applied by the force-applying member, the force receiving portion 121 is pushed to drive the developing unit 1 to rotate along the r direction, thereby forcing the developing roller 11 and the photosensitive drum 21 to separate from each other. During this process, the second part 410b is fixed relative to the photosensitive unit 2.

[0026] In some embodiments, the processing box 100 also has a bracket 13 located between the developing shell 10 and the protective cover 12, and the bracket 13 is at least used to support the developing roller 11. The force receiving portion 412a can also be set on the bracket 13 or the developing shell 10, as long as the force receiving portion 412a can drive the developing unit 1 to move along the r direction after being subjected to force.

[0027] like Figure 3 As shown, the separation mechanism also includes a reset member 42. When the separation portion 412 receives the separation force applied by the force-applying member, the reset member 42 undergoes elastic deformation and accumulates elastic force; when the force-applying member no longer applies separation force to the separation portion 412, the separation member 41 is reset under the elastic force of the reset member 42; the reset member 42 is preferably a tension spring.

[0028] like Figure 3 As shown, when the processing box 100 is not performing the developing work in the imaging device, the force-applying member applies a separation force to the separation portion 412. After the separation force receiving portion 412a receives the separation force, the separation portion 412 moves backward and forces the force receiving portion 121. During this process, the first part 410a undergoes elastic deformation and moves with the separation portion 412. Subsequently, the force receiving portion 121 drives the developing unit 1 to rotate along the r direction, and the reset member 42 undergoes elastic deformation, and the developing unit 1 and the photosensitive unit 2 are separated, thereby forcing the developing roller 11 and the photosensitive drum 21 to separate from each other.

[0029] When the processing box 100 needs to perform development work again in the imaging device, the force-applying member no longer applies separation force to the separation portion 412. Under the elastic force of the reset member 412, the separation member 41 is reset. Under the elastic force of the elastic member arranged between the developing housing 1 and the photosensitive housing 2, the developing unit 1 rotates and resets in the direction opposite to the r direction, thereby forcing the developing roller 11 and the photosensitive drum 21 to contact each other.

[0030] like Figure 3As shown, in the present invention, when observing the processing box 100 along the left-right direction, the plane where the force receiving surface is located faces upward to prevent the force applying member and the separation force receiving portion 412a from falling off during the abutment process.

[0031] In some embodiments, the separation force contact portion 412a can be a friction member arranged on the force receiving surface, or the force receiving surface is set as a friction surface, and the friction member is preferably sponge, rubber, etc. At this time, the force receiving surface may not face upward, for example, the plane where the force receiving surface is located is set to a plane parallel to the up and down directions.

[0032] As described above, the separator 41 of the present invention is mounted in conjunction with the photosensitive housing 20 through the coupling portion 411 and the coupled portion 201 , so that the separator 41 can be slidably disposed in the photosensitive unit 2 , thereby accurately positioning the separator 41 .

Claims

1. A process cartridge, detachably mounted in an imaging device, characterized in that: The processing box includes: A developing unit comprises a developing housing and a developing roller rotatably disposed in the developing housing, wherein the developing roller is used to carry the toner contained in the developing housing; The photosensitive unit comprises a photosensitive housing and a photosensitive drum rotatably arranged in the photosensitive housing, and the developing roller supplies toner to the photosensitive drum; The separating member is used to act with a force applying member in the imaging device to force the developing roller and the photosensitive drum to separate from each other. The separating member is slidably arranged in the photosensitive unit.

2. The process cartridge according to claim 1, wherein The separating member comprises a rod body and a coupling portion provided at one end of the rod body, wherein the coupling portion extends in a direction parallel to an extending direction of the rod body; The processing box further includes an engaged portion formed on the photosensitive housing, and the engaged portion is used for slidingly cooperating with the engaging portion to position the separating piece.

3. The process cartridge according to claim 2, wherein: The rotation axis of the developing roller extends in a left-right direction; Along a direction intersecting with the extending direction of the rod body, the coupling portion includes a first accommodating portion, a second accommodating portion, and a partition portion located between the first accommodating portion and the second accommodating portion; The combined portion includes a first combined portion and a second combined portion that are spaced apart, and a groove is formed between the first combined portion and the second combined portion; The first coupled portion is used to cooperate with the first accommodating portion, the second coupled portion is used to cooperate with the second accommodating portion, the groove is used to cooperate with the partition portion, and the separating piece slides along the coupled portion.

4. The process cartridge according to claim 2, wherein: The process cartridge further comprises a separation portion at the other end of the rod body, wherein the separation portion is provided with a separation force receiving portion, and the separation force receiving portion is provided on a force receiving surface of the separation portion to force the developing roller and the photosensitive drum to separate.

5. The process cartridge according to claim 4, wherein: When the processing box is observed in the left-right direction, the plane where the force receiving surface is located is not facing upward.

6. The process cartridge according to claim 1, wherein The process cartridge further comprises a reset member configured to force the separation member to reset.

7. The process cartridge according to claim 1, wherein The separating piece is formed integrally.

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