Roller spacing adjustment structure and process cartridge

Abstract

The utility model discloses a kind of roller spacing adjusting structure and processing box, its roller spacing adjusting structure is used to adjust the distance between the roller of parallel arrangement, including the spacing adjusting member being set on first roller, spacing adjusting member includes first working area and second working area;The width of spacing adjusting member first working area is greater than the initial spacing of first roller and second roller;In the state that first working area is between first roller and second roller, spacing adjusting member is in abutment with second roller, to expand the initial spacing of first roller and second roller;The width of spacing adjusting member second working area is less than or equal to the initial spacing of first roller and second roller, in the state that second working area is between first roller and second roller, spacing adjusting member is separated from second roller, first roller and second roller restore to initial spacing.

Description

Technical Field

[0001] This application relates to the field of printer technology, and in particular to a roller spacing adjustment structure and processing box. Background Technology

[0002] Currently, image forming equipment uses binary data information transmitted from a computer, which is converted into video signals by a video controller. The video signal is then converted into a laser drive signal by a video interface / control system. A laser scanning system then generates a laser beam carrying character information. Finally, an electrophotographic system images the laser beam and transfers it onto a recording medium (such as paper).

[0003] Image forming equipment is equipped with multiple parallel roller structures. Currently, the spacing between the roller structures is generally fixed and cannot be adjusted according to changes in working conditions. During manufacturing, transportation, and storage, the rollers are also in a static contact state. Long-term static contact between the rollers can easily cause wear and tear on the roller structure and affect its service life. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a roller spacing adjustment structure and processing box, which can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] On one hand, this utility model provides a roller spacing adjustment structure, which is used to adjust the distance between parallel rollers, including a spacing adjustment member rotatably disposed on a first roller; the spacing adjustment member includes a first working area and a second working area;

[0007] The distance from the surface of the first working area of ​​the spacing adjustment member to the rotation center is greater than the initial spacing between the first roller and the second roller, wherein the initial spacing between the first roller and the second roller is the sum of the axial diameter distance between the first roller and the axial diameter distance between the second roller; when the first working area is located between the first roller and the second roller, the spacing adjustment member abuts against the second roller to increase the initial spacing between the first roller and the second roller;

[0008] The distance from the surface of the second working area of ​​the spacing adjustment member to the rotation center is less than or equal to the initial spacing between the first roller and the second roller. When the second working area is located between the first roller and the second roller, the spacing adjustment member separates from the second roller, and the first roller and the second roller return to their initial spacing.

[0009] Optionally, the roller spacing adjustment structure further includes:

[0010] At least one resistance-increasing element protrudes from the outer edge of the pitch adjustment element and is located on the first working area.

[0011] Optionally, the resistance-increasing component is a resistance-increasing roller, which protrudes from the outer edge of the spacing adjustment component and is partially embedded in the first working area.

[0012] Optionally, the resistance-increasing roller is a rubber roller.

[0013] Optionally, the first working area is a first arc-shaped contact surface, which is in contact with the arc surface of the second roller.

[0014] Optionally, the spacing adjustment element further includes:

[0015] A transition region is provided, which connects the first working area and the second working area; the transition region is an arc-shaped transition surface.

[0016] Optionally, the spacing adjustment component is fitted onto one end of the first roller, or the spacing adjustment component is fitted onto both ends of the first roller.

[0017] Optionally, the spacing adjustment component further includes a third working area located between the first working area and the second working area. The distance from the surface of the third working area to the rotation center is less than the distance from the surface of the first working area to the rotation center, and greater than the initial spacing between the first roller and the second roller.

[0018] Optionally, the spacing adjustment element further includes:

[0019] A stop block is disposed on the outer edge surface of the spacing adjustment member, and the second working area is on the side away from the first working area.

[0020] On the other hand, this utility model also provides a processing box, including the roller spacing adjustment structure as described above, wherein the first roller is a charging roller and the second roller is a photosensitive drum.

[0021] The beneficial effects of this application are as follows:

[0022] The roller spacing adjustment structure provided by this utility model can more easily switch between different working states of parallel rollers by adjusting the distance between them, so as to suit the needs of different working scenarios. Attached Figure Description

[0023] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0024] Figure 1 A schematic diagram of the roller spacing adjustment structure provided by this utility model;

[0025] Figure 2 A partial structural schematic diagram of the processing box provided by this utility model;

[0026] Figure 3 A schematic diagram of the processing box in the state where it is located between the first roller and the second roller in the first working area;

[0027] Figure 4 for Figure 3 Enlarged cross-sectional view of the AA plane;

[0028] Figure 5 A schematic diagram of the processing box structure when it is located in the second working area between the first roller and the second roller;

[0029] Figure 6 for Figure 5 Enlarged cross-sectional view of the BB plane.

[0030] In the picture:

[0031] 100. Roller spacing adjustment structure; 110. Spacing adjustment component; 111. First working area; 112. Second working area; 113. Stop block; 114. Transition area; 115. Shaft hole; 120. Resistance increasing component; 200. Charging roller; 300. Photosensitive drum; 400. Powder knife. Detailed Implementation

[0032] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0038] Figure 1 This is a schematic diagram of the roller spacing adjustment structure provided by this utility model, as shown below. Figure 1As shown, in one embodiment of this application, a roller spacing adjustment structure 100 is provided. The roller spacing adjustment structure 100 is used to adjust the distance between a first roller and a second roller arranged in parallel. The roller spacing adjustment structure 100 includes a spacing adjustment member 110 rotatably disposed on the first roller. The spacing adjustment member 110 includes a first working area 111 and a second working area 112. The distance from the surface of the first working area 111 of the spacing adjustment member 110 to the rotation center is greater than the initial spacing between the first roller and the second roller. When the first working area 111 is located between the first roller and the second roller, the spacing adjustment member 110 abuts against the second roller to increase the initial spacing between the first roller and the second roller. The distance from the surface of the second working area 112 of the spacing adjustment member 110 to the rotation center is less than or equal to the initial spacing between the first roller and the second roller. When the second working area 112 is located between the first roller and the second roller, the spacing adjustment member 110 separates from the second roller, and the first roller and the second roller return to their initial spacing.

[0039] The initial distance between the first roller and the second roller can be understood as the sum of the axial diameter distance of the first roller and the axial diameter distance of the second roller. When the distance between the first roller and the second roller is the initial distance, the first roller and the second roller are in a state of synchronous rotation.

[0040] The distance from the surface of the first working area 111 to the center of rotation can be understood as the distance between the center of the shaft hole 115 of the pitch adjusting member 110 and the outer edge surface of the pitch adjusting member 110 corresponding to the first working area 111. Similarly, the distance from the surface of the second working area 112 to the center of rotation can be understood as the distance between the center of the shaft hole 115 of the pitch adjusting member 110 and the outer edge surface of the pitch adjusting member 110 corresponding to the second working area 112.

[0041] The assembly relationship between the spacing adjustment component 110 and the first roller can be that the spacing adjustment component 110 is fitted onto the first roller through the shaft hole 115 opened on it.

[0042] The process of adjusting the distance between the parallel first and second rollers using the roller spacing adjustment structure 100 is described in detail. Considering that the distance from the surface of the first working area 111 of the spacing adjustment member 110 to the rotation center is greater than the initial distance between the first and second rollers, when the first working area 111 of the spacing adjustment member 110 is located between the first and second rollers, the spacing adjustment member 110 abuts against the second roller. The spacing adjustment member 110 can widen the initial distance between the first and second rollers. At this time, the first and second rollers are separated, and they cannot rotate synchronously; that is, the first and second rollers are in a non-working state. Furthermore, considering that the distance from the surface of the second working area 112 of the spacing adjustment member 110 to the rotation center is less than or equal to the initial spacing between the first roller and the second roller, when the second roller rotates and moves the outer edge of the spacing adjustment member 110 until the second working area 112 of the spacing adjustment member 110 is located between the first roller and the second roller, the spacing adjustment member 110 separates from the second roller, and the first roller and the second roller return to their initial spacing. At this time, the first roller and the second roller can rotate synchronously, that is, the first roller and the second roller are in working condition.

[0043] In one embodiment of this application, the roller spacing adjustment structure 100 further includes at least one resistance-increasing element 120. (See reference...) Figure 1 As shown, the resistance-increasing element 120 protrudes from the outer edge of the spacing adjustment element 110 and is located on the first working area 111. When the first working area 111 of the spacing adjustment element 110 is located between the first roller and the second roller, the resistance-increasing element 120 abuts against the second roller. The resistance-increasing element 120 increases the friction between the roller spacing adjustment structure 100 and the second roller, preventing the second roller from disengaging from the first working area 111 of the roller spacing adjustment structure 100 and affecting the adjustment effect of the roller spacing adjustment structure 100 on the distance between parallel rollers. It should be noted that while ensuring sufficient friction, the resistance-increasing element 120 should also minimize the contact area with the second roller as much as possible to protect the surface of the second roller and avoid unnecessary damage to the surface of the second roller.

[0044] In an alternative embodiment, reference Figure 1As shown, the resistance-increasing component 120 is a resistance-increasing roller, which protrudes from the outer edge of the spacing adjustment component 110 and is partially embedded in the first working area 111. Generally, the central axis of the resistance-increasing roller is parallel to the central axis of the shaft hole 115 on the spacing adjustment component 110. Optionally, the resistance-increasing roller is a rubber roller. The resistance-increasing roller provided in this embodiment provides resistance-increasing points on the first working area 111, increasing the friction between the roller spacing adjustment structure 100 and the second roller, preventing the second roller from slipping out of the first working area 111 of the spacing adjustment component 110, and also minimizing the contact area between the resistance-increasing component 120 and the second roller, which is beneficial for protecting the surface of the second roller.

[0045] In an optional embodiment, the resistance-increasing element 120 is a resistance-increasing bump, such as a rubber bump, which can be disposed on the surface of the first working area 111. The number and arrangement of the resistance-increasing bumps are not specifically limited and can be placed at positions where the second roller and the first working area 111 are prone to sliding. In this embodiment, resistance-increasing bumps are provided on the first working area 111 to increase the friction between the roller spacing adjustment structure 100 and the second roller, preventing the second roller from slipping off the first working area 111 of the roller spacing adjustment element 110. It also minimizes the contact area with the photosensitive drum, thus protecting the surface of the second roller.

[0046] In an optional embodiment, the outer edge of the first working area 111 is a first arc-shaped contact surface, which fits against the arc surface of the second roller to reduce damage to the arc surface of the second roller. Further, the outer edge of the second working area 112 is a second arc-shaped contact surface, which is opposite to and separate from the arc surface of the second roller.

[0047] In an alternative embodiment, reference Figure 1 As shown, the spacing adjustment member 110 further includes a transition region 114, which connects the first working region 111 and the second working region 112. During the separation of the spacing adjustment member 110 from the second roller, the transition region 114 helps the spacing adjustment member 110 smoothly transition from the first working region 111 to the second working region 112, preventing damage to the second roller during the separation process. Preferably, the transition region 114 is an arc-shaped transition surface.

[0048] In an optional embodiment, the spacing adjustment member 110 further includes a third working area (not shown in the figure), which is located between the first working area 111 and the second working area 112. The distance from the surface of the third working area to the rotation center is less than the distance from the surface of the first working area 111 to the rotation center, and greater than the initial spacing between the first roller and the second roller. The third working area provided in this embodiment helps the spacing adjustment member 110 smoothly transition from the first working area 111 to the second working area 112, preventing damage to the second roller during the separation of the spacing adjustment member 110 from the second roller.

[0049] In an alternative embodiment, reference Figure 1 As shown, the spacing adjustment member 110 further includes a stop block 113, which is disposed on the outer edge surface of the spacing adjustment member 110, and the second working area 112 is on the side away from the first working area 111. In this embodiment, the stop block 113 mainly restricts the further rotation of the spacing adjustment member 110, thereby improving the stability of the spacing adjustment member 110 in the roller spacing adjustment state.

[0050] In an alternative embodiment, the spacing adjustment member 110 is fitted onto one end of the first roller.

[0051] In an alternative embodiment, the spacing adjustment element 110 is fitted onto both ends of the first roller.

[0052] Figure 2 This is a partial structural diagram of the processing box provided by this utility model, as shown below. Figure 2 As shown, in one embodiment of this application, a processing box is also provided, including the roller spacing adjustment structure 100 as described above. The roller spacing adjustment structure 100 provided in this embodiment is used to adjust the distance between the charging roller 200 and the photosensitive drum 300 to suit different working scenarios. The first roller is the charging roller 200, and the second roller is the photosensitive drum 300.

[0053] One of the technologies used in this processing box is laser imaging technology. It mainly charges the surface of the photosensitive drum 300, which is made of non-metallic photosensitive material selenium, through the charging electrode to give it a certain potential. Then, after exposure by the laser beam carrying the image information, an electrostatic latent image is formed on the surface of the photosensitive drum 300. After development by the magnetic brush developer, the latent image is transformed into a visible toner image. When passing through the transfer area, under the action of the electric field of the transfer electrode, the toner is transferred onto ordinary paper. Finally, after preheating and high-temperature hot roller fixing, the text and images are fused onto the paper.

[0054] The first step in the electrostatic latent imaging process is to uniformly charge the surface of the photosensitive drum 300. This is typically achieved by using a charging roller 200, made of a conductive material and connected to a power source, in rotating contact with the photosensitive drum 300, thus uniformly charging its surface. Currently, in situations where the processing cartridge is not in operation during manufacturing, transportation, or storage, the photosensitive drum 300 and the charging roller 200 remain in static contact, leading to deformation of the charging roller 200 and rendering it unusable.

[0055] Figure 3 This is a schematic diagram of the processing box structure when it is located in the first working area between the first roller and the second roller. Figure 4 for Figure 3 The enlarged structural diagram of the AA section, and then refer to... Figure 3 and Figure 4 As shown, when the processing box is in a non-working state such as during manufacturing, transportation and storage, the roller spacing adjustment structure 100 adjusts the distance between the charging roller 200 and the photosensitive drum 300, widening the distance between the charging roller 200 and the photosensitive drum 300 so that the charging roller 200 and the photosensitive drum 300 are separated. Specifically, when the first working area 111 of the spacing adjustment member 110 is located between the charging roller 200 and the photosensitive drum 300, the spacing adjustment member 110 abuts against the photosensitive drum 300. Since the distance from the surface of the first working area 111 of the spacing adjustment member 110 to the rotation center is greater than the initial distance between the charging roller 200 and the photosensitive drum 300, the spacing adjustment member 110 can expand the initial distance between the charging roller 200 and the photosensitive drum 300. At this time, the charging roller 200 and the photosensitive drum 300 are separated. The setting of the spacing adjustment member 110 ensures that the charging roller 200 and the photosensitive drum 300 will not remain in a static contact state for a long time, avoiding the situation where the charging roller 200 is deformed and cannot be restored.

[0056] refer to Figure 1 , Figure 4 As shown, the outer edge of the first working area 111 is a first arc-shaped contact surface, which fits into the arc surface of the second roller to reduce damage to the arc surface of the second roller.

[0057] In an optional embodiment, the roller spacing adjustment structure 100 further includes at least one resistance-increasing element 120. The resistance-increasing element 120 protrudes from the outer edge of the spacing adjustment element 110 and is located on the first working area 111. The resistance-increasing element 120 contacts the photosensitive drum 300. The resistance-increasing element 120 increases the friction between the spacing adjustment element 110 and the photosensitive drum 300, preventing the separation component from rotating due to vibration or other reasons during transportation. This would cause the photosensitive drum 300 to detach from the first working area 111 of the spacing adjustment element 110, resulting in the photosensitive drum 300 and the charging roller 200 remaining in static contact for an extended period, affecting the service life of the charging roller 200. It is important to note that while ensuring sufficient friction, the resistance-increasing element 120 should also minimize the contact area with the photosensitive drum 300 to protect the surface of the photosensitive drum 300 as much as possible and avoid unnecessary damage to the surface of the photosensitive drum 300.

[0058] Optionally, refer to Figure 1 , Figure 4 As shown, the resistance-increasing component 120 is a resistance-increasing roller, which protrudes from the outer edge of the spacing adjustment component 110 and is partially embedded in the first working area 111. Generally, the central axis of the resistance-increasing roller is parallel to the central axis of the shaft hole 115 on the spacing adjustment component 110. Optionally, the resistance-increasing roller is a rubber roller. The resistance-increasing roller provided in this embodiment provides resistance-increasing points on the first working area 111, increasing the friction between the roller spacing adjustment structure 100 and the photosensitive drum 300, preventing the photosensitive drum 300 from slipping off the first working area 111 of the spacing adjustment component 110, and also minimizing the contact area between the resistance-increasing component 120 and the photosensitive drum 300, which is beneficial for the protection of the surface of the photosensitive drum 300.

[0059] Optionally, the resistance-increasing element 120 is a resistance-increasing bump (not shown in the figure), such as a rubber bump, which can be disposed on the surface of the first working area 111. The number and arrangement of the resistance-increasing bumps are not specifically limited and can be disposed at positions where the photosensitive drum 300 and the first working area 111 are prone to slippage. In this embodiment, resistance-increasing bumps are provided on the first working area 111 to increase the friction between the roller spacing adjustment structure 100 and the photosensitive drum 300, prevent the photosensitive drum 300 from slipping off the first working area 111 of the roller spacing adjustment element 110, and minimize the contact area between the roller spacing adjustment structure 100 and the photosensitive drum 300, thus protecting the surface of the photosensitive drum 300.

[0060] When the processing box is in the pre-working state, the power output part of the processing box drives the photosensitive drum 300 to rotate clockwise (or counterclockwise). At this time, the spacing adjustment member 110, which is in close contact with the surface of the photosensitive drum 300, will rotate counterclockwise (or clockwise) due to friction until the first working area 111 of the spacing adjustment member 110 is completely separated from the photosensitive drum 300.

[0061] Optionally, refer to Figure 1 , Figure 4 As shown, the spacing adjustment member 110 further includes a transition region 114, which connects the first working region 111 and the second working region 112. During the separation of the spacing adjustment member 110 from the second roller, the transition region 114 helps the spacing adjustment member 110 smoothly transition from the first working region 111 to the second working region 112, preventing damage to the photosensitive drum 300 during separation. Preferably, the transition region 114 is an arc-shaped transition surface.

[0062] Optionally, the spacing adjustment member 110 further includes a third working area located between the first working area 111 and the second working area 112. The distance from the surface of the third working area to the rotation center is less than the distance from the surface of the first working area 111 to the rotation center, and greater than the initial spacing between the first roller and the second roller. This third working area helps the spacing adjustment member 110 smoothly transition from the first working area 111 to the second working area 112, preventing damage to the photosensitive drum 300 during the separation of the spacing adjustment member 110 from the second roller.

[0063] Figure 5 This is a schematic diagram of the processing box structure when it is located in the second working area between the first roller and the second roller. Figure 6 for Figure 5 The enlarged cross-sectional structural diagram of the BB surface, and then refer to... Figure 5 and Figure 6 As shown, when the processing box enters the working state, the charging roller 200 and the photosensitive drum 300 are in close contact, and the second working area 112 of the spacing adjustment member 110 is located between the charging roller 200 and the photosensitive drum 300. Further, at this time, the second working area 112 of the spacing adjustment member 110 faces the surface of the photosensitive drum 300, but is no longer in contact with the photosensitive drum 300. At this time, the photosensitive drum 300 and the charging roller 200 are in close contact, and the charging roller 200, made of conductive material, rotates in contact with the photosensitive drum 300, causing the surface of the photosensitive drum 300 to be uniformly charged with static electricity, facilitating electrostatic latent image processing.

[0064] In addition, after the photosensitive drum 300 and the charging roller 200 are tightly attached, the stop block 113 of the roller spacing adjustment structure 100 abuts against the edge of the powder knife 400 to limit the further rotation of the roller spacing adjustment structure 100 and prevent the roller spacing adjustment structure 100 from contacting the surface of the photosensitive drum 300 again.

[0065] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A roller spacing adjustment structure, characterized in that, The roller spacing adjustment structure is used to adjust the distance between parallel rollers, and includes a spacing adjustment component rotatably disposed on the first roller; the spacing adjustment component includes a first working area and a second working area; The distance from the surface of the first working area of ​​the spacing adjustment member to the rotation center is greater than the initial spacing between the first roller and the second roller, wherein the initial spacing between the first roller and the second roller is the sum of the axial diameter distance between the first roller and the axial diameter distance between the second roller; when the first working area is located between the first roller and the second roller, the spacing adjustment member abuts against the second roller to increase the initial spacing between the first roller and the second roller; The distance from the surface of the second working area of ​​the spacing adjustment member to the rotation center is less than or equal to the initial spacing between the first roller and the second roller. When the second working area is located between the first roller and the second roller, the spacing adjustment member separates from the second roller, and the first roller and the second roller return to their initial spacing.

2. The roller spacing adjustment structure according to claim 1, characterized in that, The roller spacing adjustment structure also includes: At least one resistance-increasing element protrudes from the outer edge of the pitch adjustment element and is located on the first working area.

3. The roller spacing adjustment structure according to claim 2, characterized in that, The resistance-increasing component is a resistance-increasing roller, which protrudes from the outer edge of the spacing adjustment component and is partially embedded in the first working area.

4. The roller spacing adjustment structure according to claim 3, characterized in that, The resistance-increasing roller is a rubber roller.

5. The roller spacing adjustment structure according to claim 1, characterized in that, The outer edge of the first working area is a first arc-shaped contact surface, which is in contact with the arc surface of the second roller.

6. The roller spacing adjustment structure according to claim 1, characterized in that, The spacing adjustment component further includes: A transition region is provided, which connects the first working area and the second working area; the transition region is an arc-shaped transition surface.

7. The roller spacing adjustment structure according to claim 1, characterized in that, The spacing adjustment component is fitted onto one end of the first roller, or The spacing adjustment components are fitted onto both ends of the first roller.

8. The roller spacing adjustment structure according to claim 7, characterized in that, The spacing adjustment component further includes a third working area, which is located between the first working area and the second working area. The distance from the surface of the third working area to the rotation center is less than the distance from the surface of the first working area to the rotation center, and greater than the initial spacing between the first roller and the second roller.

9. The roller spacing adjustment structure according to any one of claims 1 to 8, characterized in that, The spacing adjustment component further includes: A stop block is disposed on the outer edge surface of the spacing adjustment member, and the second working area is on the side away from the first working area.

10. A processing box, characterized in that, The roller spacing adjustment structure includes any one of claims 1 to 9, wherein the first roller is a charging roller and the second roller is a photosensitive drum.

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