Cleaning assembly and powder box

Abstract

The utility model provides a cleaning assembly and a powder box, the cleaning assembly is used for cleaning a doctor blade in the powder box, the powder box further comprises a developing roller, and the free end of the doctor blade abuts against the peripheral wall of the developing roller; the cleaning assembly comprises a holding part and a cleaning piece; the holding part is arranged at one end of the cleaning piece in the length direction, and the cleaning piece can be inserted between the doctor blade and the developing roller. According to the cleaning assembly, the doctor blade can be cleaned without disassembling the powder box.

Description

Technical Field

[0001] The utility model relates to the field of electronic photographic imaging, in particular to a cleaning component and a powder box. Background Art

[0002] An electrophotographic imaging device is a device that uses the principle of electrophotography to form an image on a printing medium such as paper, including a printer and a toner box that is detachably installed in the printer.

[0003] The powder box is usually equipped with a powder knife, whose main function is to help control and regulate the amount of toner delivered from the box to the printing medium to ensure the quality of the printed output. In terms of structure, the powder knife is usually composed of a metal knife holder and a blade made of polyurethane material. Its technical performance requires excellent structure, such as the metal knife holder needs to be straight, the positioning holes are accurate, and the surface is free of rust. The polyurethane blade should be straight without deformation, notches, and bubbles. The hardness of the powder knife is also an important technical indicator, which is directly related to the page yield performance of the printer. If the powder knife is aged or deformed, it may cause the print to have light color, irregular black spots in the vertical direction, or even powder leakage. Similarly, if there are notches or impurities on the powder knife, it may leave vertical bars in the printed image. Therefore, keeping the powder knife clean and in good condition is crucial to ensure print quality.

[0004] Traditional processing box cleaning of the powder knife requires the removal of the end cover, gear set, developer roller and other parts. During the disassembly process, the toner in the powder bin may float out of the powder outlet and pollute the environment. At the same time, the user is required to have a high level of operating ability, thus affecting the user experience. Utility Model Content

[0005] The first object of the utility model is to provide a cleaning assembly which can clean a powder dispensing knife without disassembling a powder box.

[0006] The second object of the utility model is to provide a powder box having the above cleaning component.

[0007] To achieve the above-mentioned first purpose, the utility model provides a cleaning component, which is used to clean the powder discharge knife in the powder box, and the powder box also includes a developing roller, and the free end of the powder discharge knife abuts against the outer peripheral wall of the developing roller; the cleaning component includes a holding portion and a cleaning sheet; the holding portion is arranged at one end of the cleaning sheet in the length direction, and the cleaning sheet can be inserted between the powder discharge knife and the developing roller.

[0008] It can be seen from the above scheme that when the toner sticks to the powder knife of the powder box, the printer is stopped, the door cover is opened to take out the powder box, the cleaning sheet is taken out from the powder box, and the cleaning sheet is inserted into the gap between the powder knife and the developing roller. Then, the cleaning sheet is moved back and forth along the axial direction of the developing roller for several times to ensure that the cleaning sheet and the powder knife are fully rubbed, and finally the toner stuck on the powder knife falls off due to friction, thereby achieving the effect of cleaning the powder knife. Therefore, the cleaning component of the utility model can clean the powder knife without disassembling the powder box.

[0009] A preferred solution is that the two opposite surfaces of the cleaning sheet are respectively a rough surface and a smooth surface, the smooth surface faces the developing roller, and the rough surface faces the powder discharge knife.

[0010] It can be seen that when using the cleaning sheet, the rough side faces the powder discharge knife, and the smooth side faces the developing roller and is inserted into the gap between the powder discharge knife and the developing roller. In this way, it can ensure that the rough surface and the powder discharge knife are fully rubbed. At the same time, since the smooth surface is in contact with the developing roller, the developing roller will not be worn during movement.

[0011] A preferred solution is that the cleaning assembly also includes a slide rail, a sliding component and a cleaning component; the slide rail is provided with a slide groove extending along the axial direction of the developing roller, the sliding component slides in cooperation with the slide groove, the gripping portion is provided on the top of the sliding component, and the cleaning sheet is located on the cleaning component and below the sliding component.

[0012] It can be seen that the cleaning sheet can also be guided by setting a slide rail to avoid damage to the developing roller or the powder discharge knife caused by the cleaning sheet tilting. At the same time, the gripping part is located at the top of the sliding part to facilitate user operation.

[0013] A further solution is that the sliding component includes a holding portion, a sliding seat and a first fixed portion, the holding portion is arranged at the top of the sliding seat, the first fixed portion is arranged at the bottom of the sliding seat, the sliding seat is slidably matched with the slide groove, the holding portion is exposed on the slide rail, the first fixed portion passes through the slide groove along the thickness direction, and the cleaning component is fixedly connected to the first fixed portion.

[0014] A further solution is that the cleaning component includes a cleaning sheet, a bending portion, and a second fixing portion connected in sequence; the second fixing portion and the cleaning sheet are arranged along the arrangement direction of the developing roller and the powder discharge knife, the cleaning sheet is closer to the powder discharge knife than the second fixing portion, and the second fixing portion is fixed to the first fixing portion; the second fixing portion and the sliding seat are limitedly matched with the slide rail in the thickness direction of the slide groove. When the cleaning component is located at one of the extreme positions of the slide rail, the cleaning sheet and the powder discharge knife are spaced apart in the axial direction of the developing roller.

[0015] It can be seen that the sliding component and the cleaning component cooperate with the slide rail in a direction perpendicular to the sliding direction to limit the position, which can ensure the stability of the sliding and prevent the loss of the cleaning component. At the same time, when the cleaning component is at the extreme position of the slide rail, the cleaning sheet does not contact the powder knife, which can avoid the influence on the powder knife during operation.

[0016] A preferred solution is that the cleaning assembly also includes a slide rail and a cleaning piece; the cleaning piece includes an integrally formed sliding seat, a holding portion and a cleaning sheet; the slide rail is provided with a slide groove extending along the axial direction of the developing roller, and the sliding seat slides in cooperation with the slide groove; the holding portion is arranged at the top of the sliding seat, and the cleaning sheet is arranged at the bottom of the sliding seat.

[0017] It can be seen that, by setting the slide rail, the movement of the cleaning sheet can be guided to prevent the cleaning sheet from tilting and causing damage to the developing roller or the powder discharge knife.

[0018] A further solution is that a bending portion is provided at one end of the cleaning sheet close to the sliding seat; in the arrangement direction of the developing roller and the powder discharge knife, the cleaning sheet is closer to the powder discharge knife relative to the connection position between the bending portion and the sliding seat. The cleaning piece can be drawn out from the top opening of the chute.

[0019] It can be seen that the setting of the bending portion can increase the freedom of setting the position of the slide rail.

[0020] A preferred solution is that the material of the cleaning sheet is plastic or metal, and / or the thickness of the cleaning sheet is in the range of 0.1 mm to 1 mm.

[0021] It can be seen from this that the thickness of the cleaning sheet is set within a reasonable range. In this way, it can not only ensure that the powder discharge knife is clean, but also avoid the cleaning sheet being too thick, causing the cleaning sheet to exert too much pressure on the developing roller and the powder discharge knife and cause damage to them, while at the same time, the friction is too large and the operation is not smooth.

[0022] To achieve the above second purpose, the utility model provides a powder box, including a box body and the above cleaning assembly.

[0023] A preferred solution is that a mounting groove is provided on the box body, and at least a part of the cleaning component is detachably mounted in the mounting groove.

[0024] It can be seen that when the cleaning component is not in use, it can be installed in the installation slot to prevent it from being lost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the first embodiment of the powder box of the utility model.

[0026] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0027] Figure 3 It is a structural diagram of the mounting groove on the box body in the first embodiment of the powder box of the utility model.

[0028] Figure 4 This is a state diagram of the cleaning component in the first embodiment of the powder box of the utility model when cleaning.

[0029] Figure 5 It is a structural diagram of the cleaning component in the first embodiment of the powder box of the utility model.

[0030] Figure 6 This is a positional relationship diagram of the cleaning component, the powder discharge knife and the developing roller when cleaning the first embodiment of the powder box of the utility model.

[0031] Figure 7 It is a structural diagram of the second embodiment of the powder box of the utility model.

[0032] Figure 8 yes Figure 7 A partial enlarged view of point B in the middle.

[0033] Fig. 9 It is a partial enlarged view of the second embodiment of the powder box of the utility model.

[0034] Fig.10 This is a structural exploded view of the box body and the cleaning component in the second embodiment of the powder box of the utility model.

[0035] Fig.11 It is a structural exploded view of the cleaning component of the second embodiment of the powder box of the utility model.

[0036] Fig.12 This is a positional relationship diagram of the cleaning component, the powder discharge knife and the developing roller in the non-cleaning state in the second embodiment of the powder box of the utility model.

[0037] Fig.13 It is a structural diagram of the cleaning component in the second embodiment of the powder box of the utility model.

[0038] Fig.14 It is a partial enlarged view of the third embodiment of the powder box of the utility model.

[0039] Fig.15 It is a structural diagram of the cleaning component in the third embodiment of the powder box of the utility model.

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0041] Cleaning assembly and powder box first embodiment:

[0042] See also Figures 1 to 6The powder box in this embodiment includes a box body 11, a cleaning assembly 12, a developing roller 13 and a powder discharge knife 14.

[0043] The developing roller 13 and the powder knife 14 are both mounted on the box body 11 . The free end of the powder knife 14 abuts against the outer peripheral wall of the developing roller 13 to control the thickness of the developer on the developing roller 13 . The cleaning assembly 12 is used to clean the powder knife 14 .

[0044] The cleaning assembly 12 includes a gripping portion 121 and a cleaning sheet 122. The gripping portion 121 is disposed at one end of the length direction of the cleaning sheet 122, and an anti-slip rib 123 is disposed on the surface of the gripping portion 121. The two opposite surfaces of the cleaning sheet 122 are a rough surface 123 and a smooth surface 124, respectively. The cleaning sheet 122 can be inserted between the powder discharging knife 14 and the developing roller 13, with the smooth surface 124 facing the developing roller 13 and the rough surface 123 facing the powder discharging knife 14. Preferably, the cleaning sheet 122 includes a substrate and an abrasive layer, the abrasive layer is made of materials such as silicon, aluminum and zircon, and the abrasive can be selected from the abrasive of the existing sandpaper. The rough surface 123 is the surface of the abrasive layer on the cleaning sheet 122. The material of the gripping portion 121 is plastic, the material of the substrate of the cleaning sheet 122 is plastic or metal, etc., and the thickness of the cleaning sheet 122 is in the range of 0.1 mm to 1 mm. Preferably, the thickness of the cleaning sheet 122 is 0.4 mm.

[0045] The thickness of the cleaning sheet 122 is set within a reasonable range, so that it can ensure that the powder discharge knife 14 is clean, and when the thickness of the cleaning sheet 122 is too large, the cleaning sheet 122 will not apply too much pressure to the developing roller 13 and the powder discharge knife 14 to cause damage to them, and the friction will be too large and the operation will not be smooth.

[0046] In addition, a mounting groove 111 is provided on the top wall of the box body 11, and the cleaning assembly 12 is detachably mounted in the mounting groove 111. Specifically, the mounting groove 111 is provided with a mounting rail 112, a cleaning sheet accommodating groove 115, and a gripping portion accommodating groove 116, the gripping portion accommodating groove 116 is used to place the gripping portion 121 of the cleaning assembly 12, the cleaning sheet accommodating groove 115 is used to place the cleaning sheet 122 of the cleaning assembly 12, the mounting rail 112 is located on both sides of the cleaning sheet accommodating groove, the mounting rail 112 can slide with the cleaning sheet 122 along the length direction of the cleaning sheet 122, the first end of the mounting rail 112 is provided with an insertion port 113, the second end of the mounting rail 112 is provided with a limiting wall 114, and the cleaning sheet 122 is loaded into the mounting groove 111 from the insertion port 113. A limiting protrusion 117 is disposed at one end of the gripping portion accommodating groove 116 away from the cleaning sheet accommodating groove 115 , and the limiting protrusion 117 and the limiting wall 114 limit the cleaning sheet 122 in the installation direction.

[0047] When the cleaning assembly 12 is not in use, it can be placed in the installation slot 111 to prevent it from being lost.

[0048] When the powder knife 14 of the powder box has the phenomenon of toner sticking to the knife, stop the printer, open the door cover to take out the powder box, and clean the powder knife 14 according to the following cleaning method: first, take out the cleaning sheet 122 from the powder box, insert it into the gap between the powder knife 14 and the developing roller 13 with the rough surface 123 facing the powder knife 14 and the smooth surface 124 facing the developing roller 13, and move it back and forth several times along the axial direction of the developing roller 13 to ensure that the rough surface 123 and the powder knife 14 are fully rubbed, and finally the toner stuck on the powder knife 14 falls off due to friction, so as to achieve the effect of cleaning the powder knife 14. Since the surface abutting against the developing roller 13 is a smooth surface, the developing roller 13 will not be worn during the movement. After the user wipes the cleaning sheet 122 clean, put it back into the installation slot 111, and then reinstall the powder box into the printer to resume printing.

[0049] Second embodiment of cleaning assembly and powder box:

[0050] As an illustration of the second embodiment of the cleaning assembly and powder box of the utility model, only the differences from the first embodiment of the cleaning assembly and powder box described above are described below.

[0051] See also Figures 7 to 13 The cleaning assembly 22 in this embodiment includes a slide rail 23, a sliding component 24 and a cleaning component 25.

[0052] The slide rail 23 is arranged in parallel with the powder discharge knife 27 , and the screw 20 passes through the slide rail 23 and the powder discharge knife 27 in sequence, thereby fixing the slide rail 23 and the powder discharge knife 27 on the box body 21 .

[0053] The slide rail 23 is provided with a slide groove 231 extending along the axial direction of the developing roller 26, and the sliding member 24 is slidably matched with the slide groove 231. By providing the slide rail 23 to guide the cleaning member 25, it is prevented that the cleaning sheet 251 of the cleaning member 25 is tilted to cause damage to the developing roller 26 or the powder discharge knife 27.

[0054] The sliding component 24 includes a gripping portion 241, a sliding seat 242 and a first fixing portion 243. The gripping portion 241 is arranged at the top of the sliding seat 242, and the first fixing portion 243 is arranged at the bottom of the sliding seat 242. The sliding seat 242 is slidably matched with the slide groove 231. The gripping portion 241 is exposed on the slide rail 23, and the first fixing portion 243 passes through the slide groove 231 along the thickness direction.

[0055] The cleaning member 25 includes a cleaning sheet 251 , a bending portion 252 , and a second fixing portion 253 which are connected in sequence. The cleaning sheet 251 is located below the sliding member 24 .

[0056] The second fixing portion 253 and the cleaning sheet 251 are arranged along the arrangement direction of the developing roller 26 and the powder discharge knife 27. The cleaning sheet 251 is closer to the powder discharge knife 27 than the second fixing portion 253. The second fixing portion 253 and the first fixing portion 243 are fixedly connected by screws 244. The second fixing portion 253 and the sliding seat 242 are limitedly matched with the slide rail 23 in the thickness direction of the slide groove 231, so that the sliding component 24 and the cleaning component 25 cannot be removed from the slide rail 23. On the one hand, the stability of the sliding can be ensured, and on the other hand, the loss of the cleaning component 25 can be prevented. When the cleaning component 25 is not in use, the cleaning component 25 is moved to one of the extreme positions of the slide rail 23, that is, the leftmost or rightmost end of the slide rail 23. At this time, as shown in FIG. Fig.12 As shown, the cleaning sheet 251 and the powder discharge knife 27 are spaced apart in the axial direction of the developing roller 26, that is, the cleaning sheet 251 and the powder discharge knife 27 do not contact each other, and there is a gap h between the two. The cleaning sheet 251 and the powder discharge knife 27 do not contact each other, so as to avoid affecting the powder discharge knife 27 during operation.

[0057] When the powder knife 27 needs to be cleaned, it is only necessary to push the gripping portion 241 on the sliding member 24 to move the sliding member 24 along the slide groove 231, thereby driving the cleaning sheet 251 to move between the powder knife 27 and the developing roller 26, so that the rough surface 2511 on the cleaning sheet 251 rubs against the powder knife 27, and the carbon powder stuck on the powder knife 27 falls off. When cleaning is not needed, it is only necessary to push the cleaning sheet 251 to one of the extreme positions of the slide rail 23 to ensure that the cleaning sheet 251 is no longer located between the powder knife 27 and the developing roller 26, affecting the transfer of carbon powder to the surface of the developing roller 26. At this time, only the smooth surface 2512 of the cleaning sheet 251 abuts against the developing roller 26, so it will not affect the powder knife 27 controlling the carbon powder thickness on the surface of the developing roller 26.

[0058] As can be seen from the above, since the user is required to insert the cleaning sheet between the powder discharge knife and the developing roller in the first embodiment, the user is still required to have certain operating ability. In addition, when the cleaning sheet is taken out from the gap, the residual toner may be brought out. In this embodiment, the cleaning component is restricted on the guide rail and cannot be removed, so the toner will not be brought out, and the loss of the cleaning component can also be avoided.

[0059] The third embodiment of the cleaning component and the powder box:

[0060] As an illustration of the third embodiment of the cleaning assembly and powder box of the utility model, only the differences from the second embodiment of the cleaning assembly and powder box described above are described below.

[0061] See also Fig.14 and 15 The cleaning assembly 32 in this embodiment includes a slide rail 33 and a cleaning member 34 .

[0062] The cleaning member 34 includes an integrally formed sliding seat 35, a gripping portion 36 and a cleaning sheet 37. The slide rail 33 is provided with a slide groove 331 extending along the axial direction of the developing roller 38, the sliding seat 35 is slidably matched with the slide groove 331, the gripping portion 36 is provided at the top of the sliding seat 35, and the cleaning sheet 37 is provided at the bottom of the sliding seat 35.

[0063] A bending portion 39 is provided at one end of the cleaning sheet 37 close to the sliding seat 35. In the arrangement direction of the developing roller 38 and the powder discharge knife 31, the cleaning sheet 37 is closer to the powder discharge knife 31 relative to the connection position of the bending portion 39 and the sliding seat 35. The setting of the bending portion 39 can increase the freedom of setting the position of the slide rail 33. The cleaning member 34 can be drawn out from the top opening 332 of the slide groove 331. When the cleaning member 34 is not used for cleaning, the cleaning member 37 can be drawn out upward and then installed in the installation groove of the box body.

[0064] In addition, both surfaces of the cleaning sheet can also be smooth surfaces. In this way, since the surface facing the powder discharge knife is a smooth surface, the friction between the cleaning sheet and the powder discharge knife is small, and the cleaning sheet needs to be slid more times to achieve a better cleaning effect. In addition, the surface facing the developing roller can also be a non-smooth surface. Since this may cause damage to the developing roller, the number of sliding times of the cleaning sheet can be minimized. Accordingly, the surface roughness of the rough surface needs to be increased. The mounting groove can also be provided on the bottom wall or side wall of the box body, or on the powder replenishment bottle, etc. The powder box can be a separate developing box, the developing box and the drum box are separately provided, the developing box and the drum box form a split box, or it can be an integrated box in which the developing box and the drum box are integrally provided. The above changes can also achieve the purpose of the utility model.

[0065] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cleaning assembly, the cleaning assembly being used to clean a powder discharge knife in a powder box, the powder box further comprising a developing roller, the free end of the powder discharge knife abutting against an outer peripheral wall of the developing roller; Features: The cleaning assembly includes a gripping portion and a cleaning sheet; The holding portion is arranged at one end of the cleaning sheet in the length direction, and the cleaning sheet can be inserted between the powder discharge knife and the developing roller.

2. The cleaning assembly according to claim 1, characterized in that: The two opposite surfaces of the cleaning sheet are respectively a rough surface and a smooth surface, the smooth surface faces the developing roller, and the rough surface faces the powder discharge knife.

3. The cleaning assembly according to claim 1, characterized in that: The cleaning assembly also includes a slide rail, a sliding component and a cleaning component; The slide rail is provided with a slide groove extending along the axial direction of the developing roller, the sliding component is slidably matched with the slide groove, the gripping portion is arranged on the top of the sliding component, and the cleaning sheet is located on the cleaning component and below the sliding component.

4. The cleaning assembly according to claim 3, characterized in that: The sliding component includes the holding portion, a sliding seat and a first fixed portion, the holding portion is arranged at the top of the sliding seat, the first fixed portion is arranged at the bottom of the sliding seat, the sliding seat is slidably matched with the slide groove, the holding portion is exposed on the slide rail, the first fixed portion passes through the slide groove along the thickness direction, and the cleaning component is fixedly connected to the first fixed portion.

5. The cleaning assembly according to claim 4, characterized in that: The cleaning component comprises the cleaning sheet, the bending portion and the second fixing portion connected in sequence; The second fixing part and the cleaning sheet are arranged along the arrangement direction of the developing roller and the powder discharge knife, the cleaning sheet is closer to the powder discharge knife than the second fixing part, and the second fixing part is fixed to the first fixing part; The second fixing portion and the sliding seat are limitedly matched with the sliding rail in the thickness direction of the sliding groove; When the cleaning component is located at one of the extreme positions of the slide rail, the cleaning sheet and the powder discharge knife are spaced apart in the axial direction of the developing roller.

6. The cleaning assembly according to claim 1, characterized in that: The cleaning assembly also includes a slide rail and a cleaning member; The cleaning member comprises an integrally formed sliding seat, the gripping portion and the cleaning sheet; The slide rail is provided with a slide groove extending along the axial direction of the developing roller, and the slide seat is slidably matched with the slide groove; The holding portion is arranged on the top of the sliding seat, and the cleaning sheet is arranged on the bottom of the sliding seat.

7. The cleaning assembly according to claim 6, characterized in that: The cleaning sheet is provided with a bending portion at one end close to the sliding seat; In the arrangement direction of the developing roller and the powder discharge knife, the cleaning sheet is closer to the powder discharge knife relative to the connection position between the bending portion and the sliding seat; The cleaning member can be drawn out from the top opening of the chute.

8. The cleaning assembly according to any one of claims 1 to 7, characterized in that: The cleaning sheet is made of plastic or metal; and / or The thickness of the cleaning sheet is in the range of 0.1 mm to 1 mm.

9. A powder box, characterized in that: The invention comprises a box body and a cleaning component as claimed in any one of claims 1 to 8.

10. The powder box according to claim 9, characterized in that: The box body is provided with a mounting groove, and at least a part of the cleaning component is detachably mounted in the mounting groove.

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