Imaging equipment and developing box thereof

Abstract

The utility model discloses imaging equipment and a developing box thereof, the developing box comprises a box body and a developing roller rotatably connected to the box body, the box body can be installed on a drum box with a photosensitive drum and a drum cam, and the first end and the second end of the box body are respectively provided with a first separating piece and a second separating piece. When the developing box is in a working state, the developing roller can be in contact with the photosensitive drum; when the developing box is in a non-working state, the second separating piece at the second end of the box body can abut against the drum box while the drum cam is adopted to press the first separating piece to achieve separation of the developing roller and the photosensitive drum at the first end, so that the developing roller and the photosensitive drum are separated at the second end. According to the developing box, pressurizing structures such as a main body side cam and the like do not need to be additionally arranged on the equipment main body, a corresponding transmission structure does not need to be arranged on the developing box, the developing roller and the photosensitive drum can be separated through a simple structure, the structure and transmission process of the developing box and the imaging equipment are simplified, and the cost of the developing box and the imaging equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of imaging equipment, in particular to an imaging equipment and a developing box thereof. Background Art

[0002] The developing box is a common consumable in the imaging device, and is usually detachably installed in a drum box with a photosensitive drum. The developing box includes a box body, a stirring frame, a developing roller and a powder feeding roller. The box body contains a developer. When the developing box is working, the developing roller and the photosensitive drum in the drum box are in contact with each other, the stirring frame stirs the developer in the box body, the powder feeding roller transports the developer to the developing roller, and the developing roller transports the developer to the photosensitive drum, thereby completing the developing process. However, when the developing roller in the non-working state keeps in contact with the photosensitive drum for a long time, the developing roller will cause contamination to the photosensitive drum, thereby shortening the life of the photosensitive drum and deteriorating the printing effect of the imaging device. Therefore, it is necessary to move the developing roller in the developing box in a direction away from the photosensitive drum so that the developing roller is separated from the photosensitive drum to achieve effective use of the developing roller.

[0003] Some developing boxes in the prior art use different separation structures at both ends of the developing roller to receive pressure to perform the separation operation. For example, in patent US11526119B2, it is necessary to set a drum cam at the end of the drum box and set a main body side cam on the device body. When performing the separation operation, it is necessary to make the drum cam and the main body side cam press the separation structure at both ends of the developing roller respectively to move the developing roller and the photosensitive drum from the contact position to the separation position. This separation structure increases the complexity of the structure and transmission process of the developing box and the imaging device, and increases the cost of the developing box and the imaging device. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model aims to provide a developing box, which can separate the developing roller from the photosensitive drum with a relatively simple structure, thereby reducing the cost of the developing box and the imaging device.

[0005] To solve the above problems, the technical solution adopted by the utility model is as follows: a developing box, comprising a box body and a developing roller rotatably connected to the box body, a first separating piece is provided at the first end of the box body, and a second separating piece is provided at the second end of the box body, and the box body can be installed on a drum box having a photosensitive drum and a drum cam; when the developing box is in a working state, the developing roller can contact the photosensitive drum; when the developing box is in a non-working state, the first separating piece can be pressed by the drum cam to separate the developing roller from the photosensitive drum at the first end, and at the same time, the second separating piece can abut against the drum box to separate the developing roller from the photosensitive drum at the second end.

[0006] Compared with the prior art, the beneficial effect of the utility model is that: while the developer box uses the drum cam to press the first separation piece to separate the developer roller and the photosensitive drum at the first end, the second separation piece at the second end of the box body can press the drum box, and rely on the reaction force of the drum box on the second separation piece to separate the developer roller and the photosensitive drum at the second end. There is no need to set up additional pressure structures such as the main body side cam on the device body, and there is no need to set up a corresponding transmission structure on the developer box. The separation of the developer roller and the photosensitive drum can be achieved with a relatively simple structure, simplifying the structure and transmission process of the developer box and the imaging device, and reducing the cost of the developer box and the imaging device.

[0007] In the above-mentioned developing box, the first separation member has a first separation protrusion, and the first separation protrusion extends in a direction away from the second end of the box body.

[0008] In the above-mentioned developing box, the outer periphery of the first separation protrusion has a first abutting arc surface, and the first abutting arc surface can abut against the drum cam to receive pressure from the drum cam.

[0009] In the above-mentioned developing box, the second separating member has a second separating protrusion, and the second separating protrusion can abut against the drum box to separate the developing roller from the photosensitive drum at the second end.

[0010] In the above-mentioned developing box, the second separating member has an inclined surface, and the second separating protrusion is located at one end of the inclined surface close to the drum box.

[0011] In the above-mentioned developing box, the first separating member and the second separating member are respectively arranged on the gear cover at the first end of the box body and the bearing plate at the second end of the box body.

[0012] The utility model also provides an imaging device, comprising a drum box and the above-mentioned developing box, wherein the drum box comprises a drum frame and a photosensitive drum rotatably connected to the drum frame, and the developing box is detachably mounted on the drum frame. Since the imaging device adopts the above-mentioned developing box, it has at least all the beneficial effects that the above-mentioned developing box can bring.

[0013] In the above-mentioned imaging device, the first end of the drum frame is rotatably connected to a drum cam, and the drum cam can receive the driving force from the printing device to rotate relative to the drum frame, and press the first separating member during the rotation to separate the developing roller from the photosensitive drum at the first end.

[0014] In the above-mentioned imaging device, the drum cam has a first extending arm and a second extending arm, the first extending arm can receive the driving force from the printing device, and the second extending arm can press the first separating member.

[0015] In the above-mentioned imaging device, the outer periphery of the second extending arm has a second abutting arc surface, and the second abutting arc surface can abut against the first separating member.

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the developing box and the drum box of the embodiment of the utility model at a first end viewing angle;

[0018] Figure 2 It is a schematic structural diagram of the developing box and the drum box of the embodiment of the utility model at a second end viewing angle;

[0019] Figure 3 It is a structural schematic diagram of the drum cam of an embodiment of the utility model;

[0020] Figure 4 This is a schematic structural diagram of a first separation member according to an embodiment of the utility model;

[0021] Figure 5 It is a schematic structural diagram of the second separation member of an embodiment of the utility model.

[0022] Explanation of the accompanying drawings: 100 box body, 110 developing roller, 120 first separating piece, 121 first separating protrusion, 1211 first abutting arc surface, 130 second separating piece, 131 second separating protrusion, 132 inclined surface, 140 gear cover, 150 bearing plate, 200 drum frame, 210 photosensitive drum, 220 drum cam, 221 first extending arm, 2211 driving force receiving surface, 222 second extending arm, 2221 second abutting arc surface. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below. Figure 1 and Figure 2 An embodiment of the utility model provides an imaging device and a developing box thereof. The imaging device includes a drum box and a developing box. The developing box is detachably mounted on the drum box.

[0024] The drum cartridge includes a drum frame 200 and a photosensitive drum 210 rotatably connected to the drum frame 200, and a drum cam 220 is rotatably connected to the first end of the drum frame 200. The developing cartridge includes a cartridge body 100 and a developing roller 110 rotatably connected to the cartridge body 100, a first separating member 120 is provided at the first end of the cartridge body 100, and a second separating member 130 is provided at the second end of the cartridge body 100, and the cartridge body 100 can be mounted on the drum cartridge having the photosensitive drum 210 and the drum cam 220. The developing box is provided with a stirring frame and a powder feeding roller and other structures, and the box body 100 is provided with a developer. When the developing box is in a working state, the developing roller 110 can contact with the photosensitive drum 210, and the stirring frame can stir the developer in the box body 100, and then the powder feeding roller transports the developer to the developing roller 110. When the developing roller 110 and the photosensitive drum 210 rotate and contact, the developing roller 110 can transport the developer to the photosensitive drum 210, thereby completing the developing process. When the developing box is not in a working state, the drum cam 220 can receive the driving force from the printing device and rotate relative to the drum frame 200, referring to Figure 1 When the drum cam 220 rotates relative to the drum frame 200, the first separating member 120 on the developing cartridge can be pressed by the drum cam 220 to separate the developing roller 110 from the photosensitive drum 210 at the first end. Figure 2 The second separating member 130 can abut against the drum cartridge to separate the developing roller 110 from the photosensitive drum 210 at the second end.

[0025] As can be seen from the above description, while the drum cam 220 is used to press the first separating member 120 to separate the developing roller 110 from the photosensitive drum 210 at the first end, the second separating member 130 at the second end of the box body 100 can press the drum box, and the developing roller 110 and the photosensitive drum 210 are separated at the second end by the reaction force of the drum box on the second separating member 130. Therefore, the imaging device does not need to set up additional pressure structures such as the main body side cam on the device body, nor does it need to set up corresponding transmission structures on the developing box. The separation of the developing roller 110 and the photosensitive drum 210 can be achieved with a relatively simple structure, simplifying the structure and transmission process of the developing box and the imaging device, and reducing the cost of the developing box and the imaging device.

[0026] Furthermore, a gear cover 140 is provided at the first end of the box body 100, and a bearing plate 150 is provided at the second end of the box body 100. The first separating member 120 and the second separating member 130 are respectively provided on the gear cover 140 at the first end of the box body 100 and the bearing plate 150 at the second end of the box body 100, so that the first separating member 120 can be directly processed and formed on the gear cover 140, and the second separating member 130 can be directly processed and formed on the bearing plate 150, which is convenient for processing and assembly. Figure 3The drum cam 220 has a first extending arm 221 and a second extending arm 222. The first extending arm 221 can receive a driving force from the printing device, so that the drum cam 220 rotates relative to the drum frame 200. When the drum cam 220 rotates relative to the drum frame 200, the second extending arm 222 can press the first separating member 120 to separate the developing roller 110 from the photosensitive drum 210 at the first end.

[0027] Further, refer to Figure 4 The first separation member 120 has a first separation protrusion 121, and the first separation protrusion 121 extends in a direction away from the second end of the box body 100 so as to better abut against the second extension arm 222 of the drum cam 220 and better receive the pressure from the drum cam 220, thereby realizing the separation of the developing roller 110 and the photosensitive drum 210 at the first end. Furthermore, the first extension arm 221 has a driving force receiving surface 2211, and the driving force receiving surface 2211 can be an arc surface or a plane, mainly to increase the contact area between the first extension arm 221 and the driving part of the printing device, thereby better receiving the driving force from the printing device. The outer periphery of the first separation protrusion 121 has a first abutting arc surface 1211, and the outer periphery of the second extension arm 222 has a second abutting arc surface 2221. Figure 1 , Figure 3 and Figure 4 When the second extending arm 222 presses toward the first separation protrusion 121, the second contact arc surface 2221 can gradually contact with the first contact arc surface 1211, and gradually apply force to press the first separation protrusion 121, thereby pushing the developing roller 110 in a direction away from the photosensitive drum 210, and realizing the separation of the photosensitive drum 210 and the developing roller 110 at the first end. Of course, the first separation protrusion 121 can also be other structures, as long as it can receive the pressure from the drum cam 220 when the drum cam 220 rotates, so that the developing roller 110 moves away from the photosensitive drum 210 and separates.

[0028] Further, refer to Figure 2 and Figure 5, the second separation member 130 has a second separation protrusion 131, and the second separation protrusion 131 can abut against the drum frame 200 of the drum cartridge to separate the developing roller 110 from the photosensitive drum 210 at the second end. Furthermore, the second separation member 130 has an inclined surface 132, and the inclined surface 132 is located on the side of the second separation protrusion 131. In some embodiments, when the developing cartridge is in a working state, the inclined surface 132 contacts the drum frame 200 of the drum cartridge, thereby increasing the contact area between the developing cartridge and the drum frame 200 and improving the connection stability between the developing cartridge and the drum cartridge during operation. When the developing cartridge is in a non-working state, the second separation protrusion 131 abuts against the drum cartridge, and the inclined surface 132 gradually separates from the drum cartridge, so that the developing roller 110 moves in a direction away from the photosensitive drum 210, and the photosensitive drum 210 and the developing roller 110 are separated at the second end. Of course, in some other embodiments, when the developing box is in the working state, the inclined surface 132 may not contact the drum frame 200, but the second separation protrusion 131 is set at the end of the inclined surface 132 closer to the drum frame 200. When the first separation member 120 is subjected to force to separate the developing box from the photosensitive drum 210, the second separation protrusion 131 gradually abuts against the drum frame 200, so that the developing box and the photosensitive drum 210 can be separated at the second end and can continue to remain in a separated state.

[0029] It should be noted that in the description of the present invention, if there are any orientation descriptions, such as up, down, front, back, left, right, etc., the orientations or positional relationships indicated are all based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and cannot be understood as a limitation on the present invention.

[0030] In the description of the present utility model, "several" means one or more, "more" means two or more, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0032] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A developing box, characterized in that: The invention comprises a box body (100) and a developing roller (110) rotatably connected to the box body (100); a first separating member (120) is provided at a first end of the box body (100); a second separating member (130) is provided at a second end of the box body (100); and the box body (100) can be mounted on a drum box having a photosensitive drum (210) and a drum cam (220); When the developing box is in a working state, the developing roller (110) can contact the photosensitive drum (210); When the developing box is in an inoperative state, the first separating member (120) can be pressed by the drum cam (220) so that the developing roller (110) and the photosensitive drum (210) are separated at the first end, and at the same time, the second separating member (130) can abut against the drum box so that the developing roller (110) and the photosensitive drum (210) are separated at the second end.

2. The developing cartridge according to claim 1, characterized in that: The first separation member (120) has a first separation protrusion (121), and the first separation protrusion (121) extends in a direction away from the second end of the box body (100).

3. The developing cartridge according to claim 2, characterized in that: The outer periphery of the first separation protrusion (121) has a first abutting arc surface (1211), and the first abutting arc surface (1211) can abut against the drum cam (220) to receive pressure from the drum cam (220).

4. The developing cartridge according to claim 1, wherein: The second separation member (130) has a second separation protrusion (131), and the second separation protrusion (131) can abut against the drum box to separate the developing roller (110) and the photosensitive drum (210) at the second end.

5. The developing cartridge according to claim 4, characterized in that: The second separation member (130) has an inclined surface (132), and the second separation protrusion (131) is located at an end of the inclined surface (132) close to the drum box.

6. The developing cartridge according to claim 1, characterized in that: The first separation member (120) and the second separation member (130) are respectively arranged on a gear cover (140) at a first end of the box body (100) and a bearing plate (150) at a second end of the box body (100).

7. An imaging device, characterized in that: It comprises a drum box and a developing box as described in any one of claims 1 to 6, wherein the drum box comprises a drum frame (200) and a photosensitive drum (210) rotatably connected to the drum frame (200), and the developing box is detachably mounted on the drum frame (200).

8. The imaging device according to claim 7, characterized in that The first end of the drum frame (200) is rotatably connected to a drum cam (220), and the drum cam (220) can receive a driving force from a printing device to rotate relative to the drum frame (200), and press the first separating member (120) during the rotation process to separate the developing roller (110) from the photosensitive drum (210) at the first end.

9. The imaging device according to claim 8, characterized in that The drum cam (220) has a first extending arm (221) and a second extending arm (222), wherein the first extending arm (221) can receive a driving force from a printing device, and the second extending arm (222) can press the first separating member (120).

10. The imaging device according to claim 9, characterized in that The outer periphery of the second extending arm (222) has a second abutting arc surface (2221), and the second abutting arc surface (2221) can abut against the first separating member (120).

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