Developing box and developing roller

Abstract

The utility model discloses a developing box which comprises a shell provided with a first side and a second side which are separately arranged in a first direction; the developing roller is arranged on the shell and can rotate around the axis of the developing roller extending in the first direction, and the developing roller comprises the developing roller shaft extending in the first direction and an elastic layer rotating together with the developing roller shaft; the input gear is arranged on the first side of the shell and can receive external driving force and drive the developing roller to rotate; the processing part can act on the developing roller; the device further comprises an electrode, the electrode is provided with an electric contact surface, the electric contact surface is arranged on the second side of the shell, and the electric contact surface is electrically connected with the processing component. Wherein the developing roller shaft comprises a shaft body and a covering layer covering the shaft body, and the covering layer is made of a non-metal material.

Description

Technical Field

[0001] The utility model relates to a developing box, in particular to a developing roller in the developing box. Background Art

[0002] The prior art discloses a developing box, which needs to provide power to the developing roller and the powder feeding roller when performing the developing work. The developing box can be attached to the drum box and thus be installed in the body of the imaging device, and when the developing box is attached to the drum box, the contact surface of the electrode can be arranged on the outside of the lateral wall of the drum box, so as to transmit power to the developing roller shaft and the powder feeding roller shaft.

[0003] However, the above-mentioned power transmission scheme requires the electrodes to contact the developing roller shaft and the powder feeding roller shaft at the same time, which is a relatively complex structure. This will increase the conductive material required for the electrodes, but the manufacturing cost of conductive materials is higher than that of non-conductive materials, thereby increasing the manufacturing cost of the developing box. Utility Model Content

[0004] The main purpose of the utility model is to provide a developer box, which can reduce the difficulty of electrode design and reduce the manufacturing cost of the developer box. In order to achieve the above technical effects, the utility model is implemented through the following technical solutions:

[0005] A developing box, comprising:

[0006] The housing has a first side and a second side that are separated and arranged in a first direction;

[0007] a developing roller, arranged on the housing and rotatable about a developing roller axis extending in the first direction, the developing roller comprising a developing roller shaft extending in the first direction and an elastic layer rotating together with the developing roller shaft;

[0008] An input gear, disposed on the first side of the housing, capable of receiving an external driving force and driving the developing roller to rotate;

[0009] a processing member, the processing member being capable of acting on the developing roller;

[0010] Also included is an electrode, the electrode having an electrical contact surface, the electrical contact surface being disposed on the second side of the housing, the electrical contact surface being electrically connected to the processing component;

[0011] Wherein, the developing roller shaft comprises a shaft body and a covering layer covering the shaft body, and the covering layer is made of non-metallic material.

[0012] Furthermore, the impedance between the electrical contact surface and the shaft body is greater than the impedance between the electrical contact surface and the elastic layer.

[0013] Furthermore, at least a portion of the covering layer is disposed between the elastic layer and the shaft body.

[0014] Furthermore, an insulating layer is provided on the outer peripheral surface of the elastic layer, and the insulating layer is made of a non-metallic material.

[0015] Furthermore, the covering layer is an insulating coating, and the insulating coating is disposed on the shaft body through a spraying process.

[0016] Furthermore, the covering layer is provided on the shaft body through an electroplating process.

[0017] Further, the processing component includes a layer thickness regulating member, the layer thickness regulating member abuts against the developing roller and is used to regulate the thickness of the developer attached to the developing roller, and the electrical contact surface is electrically connected to the layer thickness regulating member.

[0018] Further, the processing component includes a powder feeding roller, the powder feeding roller is rotatable around a powder feeding roller axis extending in the first direction, and the electrical contact surface is electrically connected to the powder feeding roller.

[0019] Further, the processing component includes a layer thickness regulating component and a powder feeding roller, the electrode includes a first contact portion, a second contact portion and a third contact portion, the first contact portion contacts the electrical contact surface, the second contact portion contacts the layer thickness regulating component, and the third contact portion contacts the powder feeding roller, and the first contact portion, the third contact portion and the second contact portion are arranged sequentially in the first direction.

[0020] Furthermore, it also includes a bracket arranged on the second side of the shell, the electrode is supported on the bracket, one end of the developing roller shaft is supported on the bracket, and the bracket is configured to be made of insulating resin.

[0021] Furthermore, it also includes a bracket arranged on the second side of the shell, and the covering layer is rotatably supported on the bracket.

[0022] Furthermore, it also includes a storage unit, which is arranged on the first side of the shell in the first direction, and the storage unit and the covering layer are separated and arranged in a second direction intersecting the first direction.

[0023] Furthermore, a through hole is provided at one end of the developing roller shaft, and the through hole is arranged to intersect with the developing roller axis.

[0024] Furthermore, it also includes a forced pushing protrusion and a storage unit, the storage unit is arranged on the first side of the shell, and the forced pushing protrusion is located between the cover layer and the storage unit in a second direction intersecting the first direction.

[0025] Furthermore, a storage unit is included, the storage unit is arranged on the first side of the housing in the first direction, and the electrical contact surface is located between the cover layer and the storage unit in a second direction intersecting the first direction.

[0026] On the other hand, a developing box is also provided, comprising:

[0027] The housing has a first side and a second side that are separated and arranged in a first direction;

[0028] a developing roller, arranged on the housing and rotatable about a developing roller axis extending in the first direction, the developing roller comprising a developing roller shaft extending in the first direction and an elastic layer rotating together with the developing roller shaft;

[0029] An input gear, disposed on the first side of the housing, capable of receiving an external driving force and driving the developing roller to rotate;

[0030] a processing member, the processing member being capable of acting on the developing roller;

[0031] an electrode having an electrical contact surface, the electrical contact surface being disposed on the second side of the housing and being electrically connected to the processing component;

[0032] The processing component includes a layer thickness regulating component, which abuts against the developing roller and is used to adjust the thickness of the developer attached to the developing roller. The electrical contact surface is electrically connected to the layer thickness regulating component, and the resistance value between the electrical contact surface and the developing roller shaft is greater than 1 megohm.

[0033] Furthermore, the resistance value between the electrical contact surface and the developing roller shaft is greater than 20 megohms.

[0034] Furthermore, it also includes a storage unit having an electrical contact portion, and the electrical contact portion is arranged on the first side of the housing in the first direction.

[0035] Further, the impedance between the electrical contact surface and the developing roller shaft is greater than the impedance between the electrical contact surface and the elastic layer.

[0036] Furthermore, the developing roller shaft is made of insulating resin.

[0037] Furthermore, the developing roller shaft is made of non-metallic material.

[0038] Furthermore, an insulating layer is provided on the outer peripheral surface of the elastic layer, and the insulating layer is made of a non-metallic material.

[0039] On the other hand, a developing roller is also provided, comprising:

[0040] Developing roller shaft;

[0041] An elastic layer is arranged on the outer periphery of the developing roller shaft;

[0042] The developing roller shaft comprises a shaft body and a covering layer covering the shaft body, and the covering layer is made of non-metallic material.

[0043] Furthermore, at least a portion of the covering layer is disposed between the elastic layer and the shaft body.

[0044] Furthermore, an insulating layer is provided on the outer peripheral surface of the elastic layer, and the insulating layer is made of a non-metallic material.

[0045] Furthermore, a through hole is provided at one end of the developing roller shaft, and the through hole is arranged to intersect with the developing roller axis.

[0046] After adopting the above technical solution, the utility model provides a new conductive component, which transmits electricity to the developer box by connecting with the layer thickness regulating component or the powder feeding roller shaft, thereby reducing the design difficulty of the conductive component and the manufacturing cost of the developer box. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a structural schematic diagram of a developing box at one angle in the first embodiment of the utility model;

[0048] Figure 2 It is a partially exploded schematic diagram of a first side of a developing cartridge according to a first embodiment of the utility model;

[0049] Figure 3 It is a schematic diagram of the three-dimensional structure of the second side of the developing box in the first embodiment of the utility model;

[0050] Figure 4 It is a partially exploded schematic diagram of the second side of the developing box in the first embodiment of the utility model;

[0051] Figure 5 It is a front structural schematic diagram of the second side of the developing box in the first embodiment of the utility model;

[0052] Figure 6 It is a cross-sectional view at one angle of a developing cartridge of a first embodiment of the utility model;

[0053] Figure 7 It is a partially exploded schematic diagram of another angle of the developing cartridge of the first embodiment of the utility model;

[0054] Figure 8 It is a three-dimensional structural schematic diagram of a conductive component of a developing box in a first embodiment of the utility model;

[0055] Fig. 9 It is a schematic diagram of the three-dimensional structure of the second side of the developing box of the second embodiment of the utility model;

[0056] Fig.10 It is a partially exploded schematic diagram of the second side of the developing box of the second embodiment of the utility model;

[0057] Fig.11 It is a front structural schematic diagram of the second side of the developing box of the second embodiment of the utility model;

[0058] Fig.12 It is a three-dimensional structural schematic diagram of the conductive component of the developing box in the second embodiment of the utility model;

[0059] Fig.13 This is a schematic structural diagram of a developing box at an angle according to a third embodiment of the present utility model;

[0060] Fig.14 It is a three-dimensional structural schematic diagram of another angle of the developing box of the third embodiment of the utility model;

[0061] Fig.15 It is a partially exploded schematic diagram of a first side of a developing cartridge according to a third embodiment of the present utility model;

[0062] Fig.16 It is a schematic diagram of the three-dimensional structure of the second side of the developing box of the third embodiment of the utility model;

[0063] Fig.17 It is a partially exploded schematic diagram of the second side of the developing box of the third embodiment of the utility model;

[0064] Fig.18 It is a partially exploded schematic diagram of the second side of the developing box of the third embodiment of the utility model;

[0065] Fig.19 It is a front structural schematic diagram of the second side of the developing box of the third embodiment of the utility model;

[0066] Fig. 20 It is a structural schematic diagram of a developing box at an angle in a fourth embodiment of the utility model;

[0067] Fig.21 It is a three-dimensional structural schematic diagram of another angle of the developing box of the fourth embodiment of the utility model;

[0068] Fig. 22 It is a partially exploded schematic diagram of the second side of the developing box of the fourth embodiment of the utility model;

[0069] Fig.23 It is a front structural schematic diagram of the second side of the developing box of the fourth embodiment of the utility model;

[0070] Fig.24 It is a structural schematic diagram of a developing box at an angle of a fifth embodiment of the utility model;

[0071] Fig.25 It is a three-dimensional structural schematic diagram of another angle of the developing box of the fifth embodiment of the utility model;

[0072] Fig.26 It is a partially exploded schematic diagram of the second side of the developing box of the fifth embodiment of the utility model;

[0073] Fig. 27 It is an exploded schematic diagram of the second side of the developing box of the fifth embodiment of the utility model;

[0074] Fig.28 It is a front structural schematic diagram of the second side of the developing box of the fifth embodiment of the utility model;

[0075] Fig.29 It is a structural schematic diagram of the second conductive member and the bracket of the developing box in the fifth embodiment of the utility model;

[0076] Fig.30 It is a structural schematic diagram of a developing box at an angle of a sixth embodiment of the utility model;

[0077] Fig.31 It is a three-dimensional structural schematic diagram of another angle of the developing box of the sixth embodiment of the utility model;

[0078] Fig.32 It is a partially exploded schematic diagram of the second side of the developing cartridge of Embodiment 6 of the present utility model;

[0079] Fig.33 It is a front structural schematic diagram of the second side of the developing box of Example 6 of the utility model. DETAILED DESCRIPTION

[0080] In order to make the purpose, technical scheme and technical effect of the embodiment of the utility model clearer, the technical scheme of the developer box of the utility model will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is only a preferred embodiment of the utility model, not all embodiments. Based on the embodiment of the utility model, other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0081] In the following description, the direction in which the rotation axis of the developing roller extends is referred to as the first direction (also referred to as the axial direction); the second direction is the front-to-back extension direction of the developing box, and the developing roller is located in the front in the second direction; the first direction and the second direction intersect each other. The third direction is a direction perpendicular to the first direction and the second direction.

[0082] Example 1

[0083] like Figure 1 and Figure 2 As shown, the developer cartridge 100 of the present invention is detachably installed in an image forming device, and includes a housing 1 that can be filled with developer, and the housing 1 includes a first side 11 and a second side 12 that are separated from each other in a first direction. The developer roller 2 is rotatably supported between the first side 11 and the second side 12 of the housing 1, and can rotate around a first rotation axis extending in the first direction. The powder feeding roller 3 is rotatably supported between the first side 11 and the second side 12 of the housing 1, and can rotate around a second rotation axis extending in the first direction. Figure 3 As shown, the developing box 100 further includes an input gear 111, a developing roller gear 112 and a powder feeding roller gear 113 arranged on the first side, and the input gear can be meshed with a driving force input member (not shown) in the image forming device to receive the driving force from the image forming device and rotate. The input gear 111 is meshed with the developing roller gear 112 and the powder feeding roller gear 113 respectively to transmit the received driving force to the developing roller 2 and the powder feeding roller 3 respectively, thereby driving the developing roller 2 and the powder feeding roller 3 to rotate; the first side 11 is also provided with a protective cover 114 and a storage unit 9, the protective cover 114 covers at least a part of the input gear 111, the developing roller gear 112 and the powder feeding roller gear 113, in this embodiment, the storage unit 9 is mounted on the protective cover 114, and the storage unit 9 is used to store the relevant information of the developing box 100, and has an electrical contact part exposed outside the protective cover 114.

[0084] like Figure 6 As shown, the developing roller 2 includes a developing roller shaft 2a and a developing roller body 2b, the developing roller body 2b is made of elastic rubber, the developing roller shaft 2a is a cylindrical member extending in a first direction, and the developing roller shaft 2a passes through the developing roller body 2b, the developing roller body 2b is fixed on the developing roller shaft 2a, so that the developing roller body 2b can rotate together with the developing roller shaft 2a, the developing roller shaft 2a is made of metal or conductive resin, preferably, the developing roller shaft 2a is made of insulating material; or the developing roller shaft 2a and the developing roller body 2b are isolated by insulating material, so that an insulating structure is formed between the developing roller shaft 3a and the developing roller body 3b, for example, the insulating material is electroplated or sprayed on the outer surface of the developing roller shaft 2a to form insulation between the developing roller shaft 2a and the developing roller body 2b, wherein the material of the insulating layer (covering layer) is specifically formed of non-metallic material. A positioning through hole is provided at one end of the developing roller shaft, and the positioning through hole is used to position the developing roller shaft when the developing roller shaft is electroplated or sprayed. The powder feeding roller 3 includes a powder feeding roller shaft 3a and a powder feeding roller body 3b, the powder feeding roller body 3b is made of sponge, the powder feeding roller shaft 3a is a cylindrical component extending along the first direction, and the powder feeding roller shaft 3a is arranged through the powder feeding roller body 3b, the powder feeding roller body 3b is fixed on the powder feeding roller shaft 3a, so that the powder feeding roller body 3b can rotate together with the powder feeding roller shaft 3a, and the powder feeding roller shaft 3a is made of metal or conductive resin.

[0085] like Figure 3-5 As shown, the developer box 100 is further provided with a detection protrusion 4 on the second side 12 in the first direction. The detection protrusion 4 is used for detection by a detection unit provided in the image forming device when the developer box 100 is installed in the image forming device to verify whether the developer box 100 is a new developer box 100, and further identifies the service life of the developer box 100, that is, the number of printable pages of the developer box 100, by detecting the detection protrusion 4 by the detection unit. A bracket 5 and a conductive member 6 are provided on the same side of the developer box 100 as the detection protrusion 4. The conductive member 6 and the detection protrusion 4 are spaced apart in the second direction, and the detection protrusion 4 is located behind the conductive member 6 in the second direction. In the present embodiment, the detection protrusion 4 is provided on the opposite side of the input gear 111 relative to the housing 1; of course, optionally, the detection protrusion 4 may also be provided on the same side of the input gear 111. As shown in FIG. Figure 5 As shown, the bracket 5 is constructed of insulating plastic, and the bracket 5 includes a developing roller bearing and a powder feeding roller bearing. The developing roller 2 protrudes from the surface of the shell 1 on the second side 12 of the shell 1 to form a first end, and the first end can be rotatably connected to the developing roller bearing. The powder feeding roller 3 protrudes from the surface of the shell 1 on the second side 12 of the shell 1 to form a second end, and the second end can be rotatably connected to the powder feeding roller bearing.

[0086] like Figure 3 and Figure 7 As shown, the developing box 100 further includes a layer thickness regulating member 7, which is arranged at the front end of the developing box 100 in the second direction and adjacent to the developing roller 2. Specifically, the layer thickness regulating member 7 is arranged behind the developing roller 2 in the second direction, and the layer thickness regulating member 7 extends between the first side 11 and the second side 12 of the housing 1 in the first direction, and is used to adjust the thickness of the developer attached to the developing roller 2, thereby improving the printing quality. The layer thickness regulating member 7 includes a knife frame 7a and a blade 7b, both of which extend in the first direction, the knife frame 7a is fixed to the housing 1 by a screw 8, one end of the blade 7b is fixed to the knife frame 7a, and the other end of the blade 7b abuts against the developing roller 2. Specifically, the other end of the blade 7b abuts against the outer surface of the developing roller body 2b, and after the developer is attached to the developing roller body 2b, the thickness of the developer attached to the surface of the developing roller body 2b is adjusted.

[0087] like Figure 5 and Figure 8As shown, the conductive member 6 is arranged on the second side 12, and the conductive member 6 is at least partially supported on the bracket 5. The conductive member 6 includes a main body 61, a first contact portion 62 and a second contact portion 63. The main body 61 extends in the second direction, and has a first end 65 and a second end 64 separated from each other in the second direction. The main body 61 can be fixed to the second side 12 by screws, wherein the first contact portion 62 is a plate-like structure extending from the first end 65, and the first contact portion 62 has a contact side (electrical contact surface) facing the left side, which can be in contact with the power supply component of the image forming device to achieve electrical connection and receive the power output by the power supply component. The first contact portion 62 is supported on the bracket 5. The second contact portion 63 is extended from the second end 64 of the main body 61, and is used to be electrically connected to the layer thickness adjusting component 7 to transmit the power received by the conductive component 6 to the layer thickness adjusting component 7. Specifically, the second contact portion 63 contacts the tool holder 7a of the layer thickness adjusting component 7 and forms an electrical connection. The second contact portion 63 extends in the first direction, and the second contact portion 63 is arranged between the layer thickness adjusting component 7 and the shell 1 in the first direction, and the second contact portion 63 is arranged at a fixed position close to the left side of the layer thickness adjusting component 7, so that when the screw 8 fixes the layer thickness adjusting component 7, the second contact portion 63 can be pressed and fixed at the same time, that is, the second contact portion 63 is also fixed by the screw.

[0088] In the first direction, the second contact portion 63 is closer to the housing 1 relative to the first contact portion 62, the first contact portion 62 is located on the left side of the second contact portion 63 in the first direction, the second contact portion 63 is located between the first contact 62 and the layer thickness regulating member 7 in the first direction, and the second contact portion 63 is closer to the layer thickness regulating member 7 relative to the first contact portion 62, and in the second direction, the developing roller 2, the second contact portion 63 and the first contact portion 62 are arranged in sequence from front to back, that is, the second contact portion 63 is located between the developing roller 2 and the first contact portion 62 in the second direction, and in the second direction, the second contact portion 63 is located between the layer thickness regulating member 7 and the first contact portion 62.

[0089] In this embodiment, the developing roller shaft 2a is insulated from the conductive member 6, or the developing roller shaft 2a does not receive external power through the conductive member 6, and transmits power to the layer thickness regulating member 7 only through the conductive member 6, and the impedance value between the first contact portion 62 and the developing roller shaft 2a is greater than the impedance value between the first contact portion 62 and the layer thickness regulating member 7, that is, the power on the developing roller body 2b needs to be transmitted through the layer thickness regulating member 7 and the conductive member 6. Among them, the impedance value between the developing roller shaft 2a and the layer thickness regulating member 7 is greater than 1MΩ (megaohm), preferably, the impedance value between the developing roller shaft 2a and the layer thickness regulating member 7 is greater than 20MΩ (megaohm), that is, the impedance value between the developing roller shaft 2a and the layer thickness regulating member 7 or the impedance value between the developing roller shaft 2a and the electrical contact surface is greater than a preset value, that is, an insulation setting is formed between the electrical contact surface and the developing roller shaft 2a.

[0090] In other optional embodiments, the developing roller body 2b itself is constructed of an insulating material, or the developing roller body 2b is provided with an insulating material or a non-metallic material covering the outer peripheral surface.

[0091] In this embodiment, the layer thickness adjusting component can be electrically connected to the power supply component of the image forming device through the conductive component, thereby providing power to the developing box and realizing the printing function of the developing box. The layer thickness adjusting component is fixed on the shell and can maintain stable contact with the conductive component, which can make the power transmission more stable.

[0092] Example 2

[0093] Embodiment 2 of the present invention is introduced below. The difference between this embodiment and embodiment 1 is that the conductive component is different from that of embodiment 1.

[0094] like Figure 9-12 As shown, the conductive member (electrode) 26 is arranged on the second side 12 of the housing 1, and the conductive member 26 is at least partially supported on the bracket 5. The conductive member 26 includes a main body 261, a first contact portion 262 and a second contact portion 263. The main body 261 extends substantially in the first direction, and has a first end and a second end separated from each other in the first direction. The first contact portion 262 extends from the first end to form a plate-like structure. The first contact portion 262 has a contact side facing the left side, which can be in contact with the power supply component of the image forming device to achieve electrical connection and receive the power output by the power supply component. The first contact portion 262 is supported on the bracket 5. The second contact portion 263 is formed by bending and extending from the second end of the main body 261. The second contact portion 263 is used to electrically connect with the powder feeding roller 3 to transmit the power received by the conductive member 26 to the powder feeding roller 3. Specifically, the second contact portion is connected to the powder feeding roller shaft 3a on the second side 12 of the housing 1 to form a first end connection to form an electrical connection.

[0095] like Fig.10 As shown, the bracket 5 is provided with a connection hole 51 at a position corresponding to the first contact portion, and the conductive member 26 is electrically connected to the powder feeding roller 3 through the connection hole 51, and the main body is at least partially arranged in the connection hole. In order to make the connection between the conductive member 26 and the rotating powder feeding roller 3 more stable, a conductive spring is arranged between the second contact portion 263 of the conductive member 26 and the powder feeding roller shaft 3a to offset the jumping of the powder feeding roller 3 during the rotation process, thereby improving the stability of the electrical connection between the conductive member 26 and the powder feeding roller shaft 3a. In this embodiment, the conductive member 26 is electrically connected to the powder feeding roller 3 through the second contact portion 263. In other embodiments, the conductive member 26 may also include a third contact portion, which may be electrically connected to the layer thickness regulating member 7 through a structure similar to the second contact portion 263, so that the conductive member 26 can be electrically connected to the powder feeding roller shaft 3a and the layer thickness regulating member 7 at the same time.

[0096] In the first direction, the second contact portion 263 is closer to the shell 1 relative to the first contact portion 262, the first contact portion 262 is located on the left side of the second contact portion 263 in the first direction, the second contact portion 263 is located between the first contact portion 262 and the powder feeding roller 3 in the first direction, and the second contact portion 263 is closer to the powder feeding roller 3 relative to the first contact portion 262, and in the second direction, the developing roller 2, the second contact portion 263 and the first contact portion 262 are arranged in sequence from front to back, that is, the second contact portion 263 is located between the developing roller 2 and the first contact portion 262 in the second direction.

[0097] In this embodiment, the developing roller shaft 2a is insulated from the conductive component 26, or the developing roller shaft 2a does not receive external power through the conductive component 26, and only transmits power to the powder feeding roller shaft 3a through the conductive component 26. The impedance value between the first contact portion 262 and the developing roller shaft 2a is greater than the impedance value between the first contact portion 262 and the powder feeding roller shaft 3a. That is to say, the power on the developing roller body 2b needs to be transmitted through the powder feeding roller 3 and the conductive component 26.

[0098] Example 3

[0099] like Figures 13 to 19 As shown, the developer cartridge 100 of the present invention is detachably installed in an image forming device, and includes a housing 1 that can be filled with developer, and the housing 1 includes a first side 11 and a second side 12 that are separated from each other in a first direction. The developer roller 2 is rotatably supported between the first side 11 and the second side 12 of the housing 1, and can rotate around a first rotation axis extending in the first direction. The powder feeding roller 3 is rotatably supported between the first side 11 and the second side 12 of the housing 1, and can rotate around a second rotation axis extending in the first direction. Figure 3As shown, the developer box 100 further includes an input gear 111, a developer roller gear 112, and a powder feeding roller gear 113 disposed on the first side. The input gear 111 can be meshed with a driving force input member (not shown) in the image forming device to receive the driving force from the image forming device and rotate. The input gear 111 is meshed with the developer roller gear 112 and the powder feeding roller gear 113 respectively to transmit the received driving force to the developer roller 2 and the powder feeding roller 3 respectively, thereby driving the developer roller 2 and the powder feeding roller 3 to rotate; the first side 11 is also provided with a protective cover 114, a chip frame 115, and a storage unit 9. The protective cover 114 covers at least a part of the input gear 111, the developer roller gear 112, and the powder feeding roller gear 113. In this embodiment, the storage unit 9 is mounted on the chip frame 115 and is mounted on the protective cover 114 together with the chip frame. The storage unit 9 is used to store the relevant information of the developer box 100 and has an electrical contact portion 9a exposed outside the protective cover 114.

[0100] The developing roller 2 includes a developing roller shaft 2a and a developing roller body 2b, the developing roller body 2b is made of elastic rubber, the developing roller shaft 2a is a cylindrical component extending along a first direction, and the developing roller shaft 2a is arranged through the developing roller body 2b, the developing roller body 2b is fixed on the developing roller shaft 2a, so that the developing roller body 2b can rotate together with the developing roller shaft 2a, the developing roller shaft 2a is made of metal or conductive resin, and preferably, the developing roller shaft 2a is made of insulating material; or the developing roller shaft 2a and the developing roller body 2b are isolated from each other by insulating material, so that an insulating structure is formed between the developing roller shaft 3a and the developing roller body 3b. The powder feeding roller 3 includes a powder feeding roller shaft 3a and a powder feeding roller body 3b, the powder feeding roller body 3b is made of sponge, the powder feeding roller shaft 3a is a cylindrical component extending along the first direction, and the powder feeding roller shaft 3a is arranged through the powder feeding roller body 3b, the powder feeding roller body 3b is fixed on the powder feeding roller shaft 3a, so that the powder feeding roller body 3b can rotate together with the powder feeding roller shaft 3a, and the powder feeding roller shaft 3a is made of metal or conductive resin.

[0101] like Fig.16As shown, the developing box 100 is further provided with a detection protrusion 41 on the second side 12 in the first direction. The detection protrusion 41 is used for detection by a detection unit provided in the image forming device when the developing box 100 is installed in the image forming device to verify whether the developing box 100 is a new developing box 100, and further identifies the service life of the developing box 100, that is, the number of printable pages of the developing box 100, by detecting the detection protrusion 41 by the detection unit. A bracket 5 is provided on the same side as the detection protrusion 4 in the developing box 100. The bracket 5 is constructed of insulating plastic. The bracket 5 includes a developing roller bearing and a powder feeding roller bearing. The developing roller 2 protrudes from the surface of the housing 1 at the second side 12 of the housing 1 to form a first end, and the first end can be rotatably connected to the developing roller bearing. The powder feeding roller 3 protrudes from the surface of the housing 1 at the second side 12 of the housing 1 to form a second end, and the second end can be rotatably connected to the powder feeding roller bearing.

[0102] The developing box 100 further includes a layer thickness regulating member 7, which is arranged at the front end of the developing box 100 in the second direction and adjacent to the developing roller 2. Specifically, the layer thickness regulating member 7 is arranged behind the developing roller 2 in the second direction, and the layer thickness regulating member 7 extends between the first side 11 and the second side 12 of the housing 1 in the first direction, and is used to adjust the thickness of the developer attached to the developing roller 2, thereby improving the printing quality. The layer thickness regulating member 7 includes a knife frame 7a and a blade 7b, both of which extend in the first direction, the knife frame 7a is fixed to the housing 1 by a screw 8, one end of the blade 7b is fixed to the knife frame 7a, and the other end of the blade 7b abuts against the developing roller 2. Specifically, the other end of the blade 7b abuts against the outer surface of the developing roller body 2b, and after the developer is attached to the developing roller body 2b, the thickness of the developer attached to the surface of the developing roller body 2b is adjusted.

[0103] The electrode 42 is arranged on the second side 12 of the shell 1. The electrode 42 is used to contact the power supply component of the image forming device to achieve electrical connection and receive the power output by the power supply component. In the present embodiment, the electrode 42 is integrally arranged with the detection protrusion 41, and the electrode 42 can move with the detection protrusion 41. Specifically, the detection protrusion 41 is arranged to be made of a conductive material, preferably a conductive resin. The electrode 42 is extended from one side of the detection protrusion 41, and the power output by the power supply component can be transmitted to the detection protrusion 41 through the electrode 42.

[0104] like Fig.17 and Fig.18As shown, the conductive component is arranged on the second side 12, and the conductive component is at least partially supported on the bracket 5. The conductive component includes a first conductive member 36 and a second conductive member 37. The first conductive member 36 is electrically connected to the second conductive member 37. The first conductive member 36 is electrically connected to the electrode 42 to access the power output by the power supply component. The first conductive member 36 is set as a metal member, preferably a bendable and extendable metal wire or metal sheet. The first conductive member 36 includes a first contact portion 361, a second contact portion 362, and a first connecting portion 363 connected and bent and extended between the first contact portion 361 and the second contact portion 362. The contact portion 361 is in contact with the detection protrusion 41 and can move with the detection protrusion 41. Specifically, the portion of the first connection portion 363 close to the first contact portion 361 is set as an elastic arm, which can be elastically deformed so that the first contact portion 361 moves with the detection protrusion 42 and maintains the contact connection of the first contact portion 361 following the detection protrusion 42. The second contact portion 362 is connected to the layer thickness regulating member 7. Specifically, the second contact portion 362 contacts and forms an electrical connection with the tool holder 7a of the layer thickness regulating member 7, and transmits the power received by the first conductive member 36 to the layer thickness regulating member 7. The second contact portion 362 is constructed as an elastic member, which is configured to be elastically deformable in the left-right direction, so that the second contact portion 362 is in more stable contact with the layer thickness regulating member 7. Specifically, the second contact portion 362 is in elastic contact with the layer thickness regulating member 7. The bracket 5 is provided with a fixing column 51, and the second contact portion 362 is provided with a compression spring structure, and the compression spring is sleeved and fixed on the fixing column 51, so that the second contact portion 362 can maintain stable contact with the layer thickness adjustment member 7. The housing 1 is provided with a positioning hole 13 corresponding to the second contact portion 362, and the second contact portion 362 is installed in the positioning hole 13, and the fixing column 51 is at least partially inserted into the positioning hole 13, so that the second contact portion 362 is roughly positioned at a position at least partially overlapping with the layer thickness adjustment member 7 in the first direction. When the first contact portion 361 contacts the detection protrusion 41, the first connecting portion 363 is in an elastic deformation state, and the elastic deformation force generated by the first connecting portion 363 will make the first contact portion 361 maintain close contact with the detection protrusion 41. Specifically, the detection protrusion 41 is provided with a limiting groove 43, and the first contact portion 361 is at least partially arranged in the limiting groove 43 to prevent the first contact portion 361 from being separated from the detection protrusion 41.

[0105] The second conductive member 37 is configured as a conductive metal sheet, and the second conductive member 37 includes a third contact portion 371, a fourth contact portion 372, and a second connecting portion 373 connected and bent between the third contact portion 371 and the fourth contact portion 372. The third contact portion 371 is connected to the first conductive member 36, specifically connected to the second contact portion 362 of the first conductive member 36, and the fourth contact portion 372 is connected to the powder feeding roller shaft 3a, wherein the third contact portion 371 has a fixing hole 374, and a fixing column 51 is provided on the bracket 5, and the fixing hole 374 is sleeved on the fixing column 51 to fix the third contact portion 371 on the bracket 5. It can be understood that the number of the fixing columns 51 on the bracket 5 can be multiple, and the second conductive member 37 is provided with multiple fixing holes 374 in a one-to-one correspondence, and the second conductive member 37 is fixed to the bracket 5 by the cooperation of multiple fixing columns and multiple fixing holes. The fourth contact portion 372 has a contact convex point, which is formed by protruding and extending from the fourth contact portion 372 toward the powder feeding roller shaft 3a, so as to maintain close contact between the fourth contact portion 372 and the powder feeding roller shaft 3a. In the first direction, the third contact portion 371, the second contact portion 362 and the layer thickness adjustment member 7 are arranged in sequence, and the third contact portion 371 and the layer thickness adjustment member 7 can compress the second contact portion 362 therebetween, so as to maintain stable contact between the three.

[0106] In this embodiment, the developing roller shaft 2a is insulated from the conductive component, or the developing roller 2 does not receive external power through the conductive component, and transmits power to the layer thickness regulating component 7 through the first conductive component 36, and transmits power to the powder feeding roller 3 through the second conductive component 37. The impedance value between the first contact portion 361 and the developing roller shaft 2a is greater than the impedance value between the first contact portion 361 and the layer thickness regulating component 7, and the impedance value between the first contact portion 361 and the developing roller shaft 2a is greater than the impedance value between the first contact portion 361 and the powder feeding roller 3.

[0107] Example 4

[0108] Embodiment 4 of the present invention is introduced below. The difference between this embodiment and embodiment 1 is that the conductive component is different from that of embodiment 1.

[0109] like Fig. 20 and Fig.21 As shown, the developing box 100 includes a storage unit 9 arranged on a first side and a chip rack 14 for supporting the storage unit. The storage unit 9 can be movably mounted on the protective cover 114 together with the chip rack 14. In this embodiment, a chip cover 15 is also provided on the outer side of the protective cover 114. The chip rack 14 is movably arranged between the chip cover 15 and the protective cover 114. The storage unit 9 is used to store relevant information of the developing box 100, and has an electrical contact portion 9a exposed outside the chip rack 14.

[0110] like Fig. 22 and Fig.23 As shown, the developing box 100 also includes a conductive member 46, which is arranged on the second side 12 of the shell 1. The conductive member 46 is used to contact with the power supply component of the image forming device to achieve electrical connection and receive the power output by the power supply component. The conductive member 46 includes a first contact portion 461, a second contact portion 462, a third contact portion 463, a first connecting portion 464 connected between the first contact portion 461 and the second contact portion 462, and a second connecting portion 465 connected between the second contact portion 462 and the third contact portion 463, wherein the first contact portion 461 is used to contact with the power supply component of the image forming device to achieve electrical connection, and the second contact portion 462 is connected to the layer thickness adjustment portion 463. The component 7 contacts and transmits power to the layer thickness adjusting component 7, the third contact portion 463 contacts and transmits power to the powder feeding roller 3, specifically, the first contact portion 461 is constructed as a flat plate structure, and the bracket 5 is provided with a fixing hole 52 that penetrates the bracket in the first direction, the first contact portion 461 is arranged in the fixing hole 52 and is at least partially exposed outside the fixing hole 52, the second contact portion 462 is constructed as a "U"-shaped spring sheet, and the shell 1 is provided with a mounting hole 16 that is recessed inward from the second side 12, the second contact portion 462 passes through the mounting hole and abuts against the tool holder of the layer thickness adjusting component 7, and the third contact portion 463 is constructed as a contact protrusion, which abuts against the powder feeding roller shaft 3a. In the first direction, the first contact portion 461, the second contact portion 462 and the third contact portion 463 are arranged in sequence, that is, the first connecting portion 464 is arranged to be bent and extended between the first contact portion 461 and the second contact portion 462, and the second connecting portion 465 is arranged to be bent and extended between the second contact portion 462 and the third contact portion 463.

[0111] Example 5

[0112] Embodiment 5 of the present invention is introduced below. The difference between this embodiment and embodiment 3 is that the conductive structure is different from that of embodiment 3.

[0113] like Figure 24 to Figure 27 As shown, the developing box 100 includes a storage unit 9 arranged on a first side and a chip frame 14 for supporting the storage unit. The storage unit 9 can be movably mounted on the protective cover 114 together with the chip frame 14. In this embodiment, a chip cover 15 is also arranged on the outer side of the protective cover 114. The chip frame 14 is movably arranged between the chip cover 15 and the protective cover 114. The storage unit 9 is used to store relevant information of the developing box 100 and has an electrical contact portion 9a exposed outside the chip frame 14. It can be understood that the chip frame 14 can be fixedly mounted on the protective cover, or integrally formed with the protective cover, and the electrical contact portion 9a is arranged closer to the rear end relative to the front end where the developing roller 2 is located in the second direction.

[0114] The developing box 100 also includes a first separating member 19 arranged on the first side 11 and a second separating member 17 arranged on the second side 12, wherein the second separating member 17 is used to receive the thrust from the drum assembly and can move relative to the shell 1, and the second separating member 17 is arranged near one end of the shell 1 away from the developing roller 2 in a second direction intersecting the first direction, and the first separating member 19 is integrally arranged with the shell 1 or fixedly installed on the shell 1, and extends from the second side 12 of the shell 1 in the first direction. The first separating member 19 is used to receive the thrust from the image forming device, and is arranged near the other end of the shell 1 close to the developing roller 2 in the second direction.

[0115] like Fig.28 and Fig.29 As shown, the developer box 100 also includes a conductive component, which is at least partially supported on the bracket 5. The conductive component includes a first conductive member 56 and a second conductive member 57. The first conductive member 56 is installed on the bracket 5 and is at least partially exposed outside the shell 1. The exposed portion of the first conductive member 56 is used to contact with the power supply component of the image forming device to achieve electrical connection and receive the power output by the power supply component. The first conductive member 56 is set to a conductive resin. In this embodiment, the first conductive member 56 is fixedly installed on the bracket 5 by screws 58. In other optional embodiments, it can also be fixed to the bracket 5 by means of a snap connection or the like. The second conductive member 57 is installed on the bracket 5, and the second conductive member 57 is electrically connected to the first conductive member 56. The second conductive member 57 is set as a conductive steel wire. A mounting groove is set on the bracket 5. The second conductive member 57 is fixed in the mounting groove. The second conductive member 57 includes a first contact part 571, a second contact part 572 and a third contact part 573. The first contact part 571 is connected to the first conductive member 56, the second contact part 572 is connected to the first contact part 571 through the first connecting part 574, and the third contact part 573 is connected to the second contact part 572 through the second connecting part 575, so as to transmit the power to the layer thickness adjusting member 7 and the powder feeding roller shaft 3a.

[0116] Example 6

[0117] The following is an introduction to Example 6 of the utility model. The difference between this example and Example 1 is that the conductive component is different from that of Example 1.

[0118] like Fig.30As shown, the developing box 100 includes a storage unit 9 arranged on a first side and a chip frame 14 for supporting the storage unit. The storage unit 9 can be movably mounted on the protective cover 114 together with the chip frame 14. In this embodiment, a chip cover 15 is also arranged on the outer side of the protective cover 114. The chip frame 14 is movably arranged between the chip cover 15 and the protective cover 114. The storage unit 9 is used to store relevant information of the developing box 100 and has an electrical contact portion 9a exposed outside the chip frame 14. It can be understood that the chip frame 14 can be fixedly mounted on the protective cover, or integrally formed with the protective cover, and the electrical contact portion 9a is arranged closer to the rear end relative to the front end where the developing roller 2 is located in the second direction.

[0119] like Figure 31-Figure 33 As shown, the developing box 100 also includes a conductive member 66, which is arranged on the second side 12 of the shell 1. The conductive member 66 is used to contact with the power supply component of the image forming device to achieve electrical connection and receive the power output by the power supply component. The conductive member 66 includes a first contact portion 661, a second contact portion 662, a third contact portion 663, a first connecting portion 664 connected between the first contact portion 661 and the second contact portion 662, and a second connecting portion 665 connected between the second contact portion 662 and the third contact portion 663, wherein the first contact portion 661 is used to contact with the power supply component of the image forming device to achieve electrical connection, and the second contact portion 662 is connected to the layer thickness adjustment portion 663. The component 7 contacts and transmits power to the layer thickness adjusting component 7, the third contact portion 663 contacts and transmits power to the powder feeding roller 3, specifically, the first contact portion 661 is constructed as a flat plate structure, and the bracket 5 is provided with a fixing hole 52 that penetrates the bracket in the first direction, the first contact portion 661 is arranged in the fixing hole 52 and is at least partially exposed outside the fixing hole 52, the second contact portion 662 is constructed as a "U"-shaped spring sheet, and the shell 1 is provided with a mounting hole 16 that is recessed inward from the second side 12, the second contact portion 462 passes through the mounting hole and abuts against the tool holder of the layer thickness adjusting component 7, and the third contact portion 663 is constructed as a contact protrusion, which abuts against the powder feeding roller shaft 3a. In the first direction, the first contact portion 661, the second contact portion 662 and the third contact portion 663 are arranged in sequence, that is, the first connecting portion 664 is arranged to be bent and extended between the first contact portion 661 and the second contact portion 662, and the second connecting portion 665 is arranged to be bent and extended between the second contact portion 662 and the third contact portion 663.

[0120] The second side 12 is further provided with a pushing protrusion 20 for receiving a force outside the developing box 100 so that the developing roller 2 in the developing box 100 is close to the photosensitive drum in the drum box. The pushing protrusion 20 is arranged behind the conductive member 56 in the second direction.

[0121] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A developing box, comprising: The housing has a first side and a second side that are separated and arranged in a first direction; a developing roller, arranged on the housing and rotatable about a developing roller axis extending in the first direction, the developing roller comprising a developing roller shaft extending in the first direction and an elastic layer rotating together with the developing roller shaft; An input gear, disposed on the first side of the housing, capable of receiving an external driving force and driving the developing roller to rotate; a processing member, the processing member being capable of acting on the developing roller; The method is characterized in that it further comprises an electrode, wherein the electrode has an electrical contact surface, the electrical contact surface is arranged on the second side of the housing, and the electrical contact surface is electrically connected to the processing component; Wherein, the developing roller shaft comprises a shaft body and a covering layer covering the shaft body, and the covering layer is made of non-metallic material.

2. The developing cartridge according to claim 1, wherein: The impedance between the electrical contact surface and the shaft body is greater than the impedance between the electrical contact surface and the elastic layer.

3. The developing cartridge according to claim 1, wherein: At least a portion of the cover layer is disposed between the elastic layer and the shaft body.

4. The developing cartridge according to claim 1, wherein: An insulating layer is arranged on the outer peripheral surface of the elastic layer, and the insulating layer is made of a non-metallic material.

5. The developing cartridge according to claim 1, wherein: The covering layer is an insulating paint, and the insulating paint is disposed on the shaft body through a spraying process.

6. The developing cartridge according to claim 1, wherein: The covering layer is arranged on the shaft body through an electroplating process.

7. The developing cartridge according to claim 1, wherein: The processing component includes a layer thickness regulating member that abuts against the developing roller and is used to regulate the thickness of the developer attached to the developing roller, and the electrical contact surface is electrically connected to the layer thickness regulating member.

8. The developing cartridge according to claim 1, wherein: The processing component comprises a powder feeding roller, the powder feeding roller is rotatable about a powder feeding roller axis extending in the first direction, and the electrical contact surface is electrically connected to the powder feeding roller.

9. The developing cartridge according to claim 1, wherein: The processing component includes a layer thickness regulating component and a powder feeding roller, and the electrode includes a first contact portion, a second contact portion and a third contact portion, the first contact portion contacts the electrical contact surface, the second contact portion contacts the layer thickness regulating component, and the third contact portion contacts the powder feeding roller, and the first contact portion, the third contact portion and the second contact portion are arranged sequentially in the first direction.

10. The developing cartridge according to claim 1, wherein: It also includes a bracket arranged on the second side of the shell, the electrode is supported on the bracket, one end of the developing roller shaft is supported on the bracket, and the bracket is configured to be made of insulating resin.

11. The developing cartridge according to claim 1, wherein: The invention also includes a bracket disposed on the second side of the shell, and the cover layer is rotatably supported on the bracket.

12. The developing cartridge according to claim 1, wherein: The invention further includes a storage unit, which is disposed on the first side of the housing in the first direction, and is spaced apart from the cover layer in a second direction intersecting the first direction.

13. The developing cartridge according to claim 1, wherein: A through hole is arranged at one end of the developing roller shaft, and the through hole is arranged to intersect with the developing roller axis.

14. The developing cartridge according to claim 1, wherein: The invention also includes a forced pushing protrusion and a storage unit. The storage unit is disposed on the first side of the housing, and the forced pushing protrusion is located between the cover layer and the storage unit in a second direction intersecting the first direction.

15. The developing cartridge according to claim 1, wherein: A storage unit is also included. The storage unit is disposed on the first side of the housing in the first direction, and the electrical contact surface is located between the cover layer and the storage unit in a second direction intersecting the first direction.

16. A developing box, comprising: The housing has a first side and a second side that are separated and arranged in a first direction; a developing roller, arranged on the housing and rotatable about a developing roller axis extending in the first direction, the developing roller comprising a developing roller shaft extending in the first direction and an elastic layer rotating together with the developing roller shaft; An input gear, disposed on the first side of the housing, capable of receiving an external driving force and driving the developing roller to rotate; a processing member, the processing member being capable of acting on the developing roller; an electrode having an electrical contact surface, the electrical contact surface being disposed on the second side of the housing and being electrically connected to the processing component; It is characterized in that the processing component includes a layer thickness regulating component, which is in contact with the developing roller and is used to adjust the thickness of the developer attached to the developing roller. The electrical contact surface is electrically connected to the layer thickness regulating component, and the resistance value between the electrical contact surface and the developing roller shaft is greater than 1 megohm.

17. The developing cartridge according to claim 16, wherein: The electrical resistance between the electrical contact surface and the developer roller shaft is greater than 20 megohms.

18. The developing cartridge according to claim 16, wherein: Also included is a storage unit having an electrical contact portion disposed on the first side of the housing in the first direction.

19. The developing cartridge according to claim 16, wherein: The impedance between the electrical contact surface and the developing roller shaft is greater than the impedance between the electrical contact surface and the elastic layer.

20. The developing cartridge according to claim 16, wherein: The developing roller shaft is made of insulating resin.

21. The developing cartridge according to claim 16, wherein: The developing roller shaft is made of non-metallic material.

22. The developing cartridge according to claim 16, wherein: An insulating layer is arranged on the outer peripheral surface of the elastic layer, and the insulating layer is made of a non-metallic material.

23. A developing roller comprising: Developing roller shaft; An elastic layer is arranged on the outer periphery of the developing roller shaft; It is characterized in that the developing roller shaft comprises a shaft body and a covering layer covering the shaft body, and the covering layer is made of non-metallic material.

24. The developing roller according to claim 23, wherein At least a portion of the cover layer is disposed between the elastic layer and the shaft body.

25. The developing roller according to claim 23, wherein: An insulating layer is arranged on the outer peripheral surface of the elastic layer, and the insulating layer is made of a non-metallic material.

26. The developing roller according to claim 23, characterized in that A through hole is arranged at one end of the developing roller shaft, and the through hole is arranged to intersect with the developing roller axis.

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