Developing box

Abstract

The utility model discloses a developing box which comprises a shell, the shell is provided with a first side and a second side which are separated from each other in a first direction, and the shell is provided with a third side and a fourth side which are separated from each other in a second direction crossed with the first direction; a developing roller; a powder feeding roller; a doctor blade; a coupling gear; the electrode is provided with an electric contact part, the electric contact part is exposed on the second side of the shell in the first direction, and the electrode can be electrically connected to at least one of the developing roller, the powder feeding roller and the powder discharging knife; the electric contact part is closer to the fourth side of the shell relative to the third side of the shell in the second direction; the electrodes are projected in the first direction and are out of the projection range of the coupling gear; the utility model provides a novel electrode, and the degree of freedom of connection between the electrode and a power supply device is improved, so that the mutual influence between an electric contact part and other parts is reduced; therefore, a larger electric contact surface can be designed on the electric contact part, so that the stability of the electric connection between the electrode and the electrophotographic imaging device is improved.

Description

Technical Field

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

[0002] The prior art discloses a developing box that can be installed together with a drum box to an electronic photographic imaging device, and the developing box includes a developing roller, a powder feeding roller, a powder discharge knife, a chip, a detected protrusion, an electrode, and a coupling gear for receiving a driving force. When the developing box is installed to the electronic photographic imaging device, the electrode is electrically connected to a power supply component inside the electronic photographic imaging device to receive power from the electronic photographic imaging device and transmit it to the developing roller, the powder feeding roller, and the powder discharge knife. After the developing roller, the powder feeding roller, and the powder discharge knife are powered on, they have a stronger adsorption force on the developer, which can effectively improve the imaging quality of the developing box.

[0003] In the prior art, the electrode in the developer box has an electric contact portion electrically connected to the electronic photographic imaging device, and the electric contact portion is located on the same side of the developer box as the movable detection protrusion in the length direction (left-right direction) of the developer box, and the electric contact portion is located between the detection protrusion and the developing roller and the powder feeding roller in the width direction (front-back direction) of the developer box, so as to realize the electrical connection between the electronic photographic imaging device and the developing roller and the powder feeding roller; this technical solution reserves limited space for the electric contact portion, and when in use, it is easy for the electric contact portion to interfere with other components; correspondingly, the electric contact portion is also prone to poor contact between the electric contact portion and the electronic photographic imaging device due to insufficient processing accuracy, thereby affecting the printing quality of the developer box. Utility Model Content

[0004] Therefore, the utility model provides a developing box to solve the above technical problems, which is mainly achieved through the following technical solutions:

[0005] A developing box, comprising:

[0006] A housing, wherein the housing has a first side and a second side separated from each other in a first direction, and the housing has a third side and a fourth side separated from each other in a second direction intersecting the first direction;

[0007] a developing roller, located on the third side of the housing in the second direction, the developing roller being rotatable about a developing roller axis extending in the first direction;

[0008] A powder feeding roller, used for feeding developer to the developing roller, the powder feeding roller being rotatable around an axis of the powder feeding roller extending in the first direction;

[0009] A powder knife, used for controlling the thickness of the developer on the developing roller;

[0010] A coupling gear, located on the first side of the housing, the coupling gear can receive a driving force from the outside of the developing box and drive the developing roller to rotate;

[0011] an electrode having an electrical contact portion, the electrical contact portion being exposed on the second side of the housing in the first direction, the electrode being electrically connectable to at least one of the developing roller, the powder feeding roller and the powder discharge knife;

[0012] The electrical contact portion is closer to the fourth side of the housing than to the third side of the housing in the second direction; and the electrode is outside the projection range of the coupling gear when projected along the first direction.

[0013] Further, in the second direction, the electrical contact portion is farther away from the third side of the housing than the coupling gear.

[0014] Furthermore, it also includes a detected protrusion, which is located on the second side of the shell in the first direction, and the detected protrusion can move according to the rotation of the coupling gear. In the second direction, the electrical contact part is closer to the developing roller than the detected protrusion.

[0015] Furthermore, it also includes an electrical connector connected to the electrical contact portion, and projected along the first direction, the electrical connector is outside the projection range of the coupling gear.

[0016] Furthermore, at least a portion of the electrical connector extends in the second direction.

[0017] Furthermore, at least a portion of the electrical connector extends from the first side of the housing to the second side of the housing.

[0018] Further, in a third direction intersecting the first direction and the second direction, at least a portion of the electrical connector extends from top to bottom to below the coupling gear.

[0019] Furthermore, it also includes a bearing plate for supporting the developing roller and the powder feeding roller, the bearing plate is electrically connected to the electrical connector, and the bearing plate is made of conductive material.

[0020] Furthermore, it also includes a bearing plate for supporting the developing roller and the powder feeding roller, which is projected along the first direction, and the bearing plate is outside the projection range of the coupling gear.

[0021] Further, the electrical contact portion is configured as a protrusion extending in the first direction.

[0022] Beneficial effects:

[0023] The utility model provides a new electrode, in which a first electrical contact portion electrically contacting with a power supply component of an electronic photographic imaging device and a second electrical contact portion electrically contacting with a developing roller shaft and a powder feeding roller shaft are respectively arranged on two opposite sides of a developing box in a front-to-back direction, so that the first electrical contact portion is further away from the developing roller and the powder feeding roller in the front-to-back direction, a larger extension space is provided for the first electrical contact portion in the front-to-back direction, the degree of freedom of connection between the electrode and the power supply component is improved, thereby reducing the mutual influence between the electrical contact portion and other components, and further enabling the first electrical contact portion to have a larger contact surface with the power supply component, thereby improving the stability of the electrical connection between the first electrical contact portion and the electronic photographic imaging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the developing box in Embodiment 1 of the present utility model;

[0025] Figure 2 It is a three-dimensional structural schematic diagram of another angle of the developing box in Embodiment 1 of the utility model;

[0026] Figure 3 It is a vertical cross-sectional view of the developing cartridge in Embodiment 1 of the utility model;

[0027] Figure 4 It is a partial exploded view of the left side of the developing box in Embodiment 1 of the present utility model;

[0028] Figure 5 It is a partial exploded view of the right side of the developing box in Embodiment 1 of the present utility model;

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the electrode in Example 1 of the utility model;

[0030] Figure 7 It is a schematic diagram of the positions of electrodes and a power supply device when the developing cartridge is installed in the electronic photographic imaging device in Embodiment 1 of the present utility model;

[0031] Figure 8 It is a schematic diagram of the position of the electrode and the power supply device at another angle when the developing box in Embodiment 1 of the utility model is installed in the electronic photographic imaging device;

[0032] Fig. 9 It is an exploded view of the developing box in Embodiment 2 of the present utility model;

[0033] Fig.10 It is a schematic diagram of the three-dimensional structure of the electrode in Example 2 of the utility model. DETAILED DESCRIPTION

[0034] 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.

[0035] Embodiment 1:

[0036] In the following description, when referring to the direction of the developing box 100, the axial direction of the later-described developing roller 120 is taken as the left-right direction (first direction), and the later-described coupling gear 150 is located on the left side of the developing roller 120 in the left-right direction; the front-to-back direction (second direction) is defined as the arrangement direction of the later-described developing roller axis and the later-described stirring frame axis, and the developing roller axis is located at the front end of the stirring frame axis in the front-to-back direction; the up-down direction (third direction) is a direction intersecting the first direction and the second direction.

[0037] Figure 1-3A developing box is shown in the figure, which can be installed in an electronic photographic imaging device together with a drum box in a detachable manner. The developing box 100 includes a shell 110 as a main body, and the shell 110 is configured as a box for accommodating a developer. The shell 110 is provided with a handle 111 on the rear side in the front-to-back direction for the user to hold. The developing box 100 also includes a developing roller 120, a powder feeding roller 130, a stirring frame 140, an electrode 160, a detected protrusion 170 and a chip 180. The developing roller 120 is located at the front end of the housing 110 in the front-to-back direction, the powder feeding roller 130 is located inside the housing 110 and contacts the developing roller 120 in the front-to-back direction to feed the developer to the developing roller 120, and the stirring frame 140 is rotatably supported inside the housing 110; a left cover 191 is provided on the left side of the housing 110, and the left cover 191 is used to protect the gear system provided on the left side of the housing 110 in the left-right direction, and the left cover 191 at least covers a part of the gear system, and the gear system includes but is not limited to the coupling gear 150 and the gear system provided on the developing roller 120. The developing roller gear 121, the powder feeding roller gear 131 and the stirring frame gear 141 at the left end of the roller 120, the powder feeding roller 130 and the stirring frame 140, the coupling gear 150 includes a gear portion and a driving head fixedly connected to the gear portion, the driving head is located on the left side of the gear portion in the left-right direction, and the driving head of the coupling gear 150 is exposed to the left side of the developing box 100 in the left-right direction through the through hole opened on the left cover 191, so that the driving head of the coupling gear 150 can cooperate with the driving member (not shown) inside the electronic photographic imaging device to receive the driving force. The coupling gear 150 is arranged on the left side of the housing 110 in the left-right direction. When the developing box 100 is installed in the electronic photographic imaging device, the driving head of the coupling gear 150 can be connected with the driving member inside the electronic photographic imaging device to receive the driving force of the electronic photographic imaging, and drive the coupling gear 150 to rotate around the coupling gear axis extending in the left-right direction. The gear part of the coupling gear 150 can be meshed and connected with the developing roller gear 121, the powder feeding roller gear 131 and the stirring frame gear 141 respectively, so that the coupling gear 150 drives the developing roller 120, the powder feeding roller 130 and the stirring frame 140 to rotate around their respective axes extending in the left and right directions, the stirring frame 140 stirs the developer inside the housing 110 and conveys the developer to the powder feeding roller 130, the powder feeding roller 130 conveys the developer to the developing roller 120, the developing roller 120 contacts the photosensitive drum in the drum box and conveys the developer to the photosensitive drum to develop the electrostatic latent image on the photosensitive drum. The developing box 100 also includes a powder discharge knife 112 arranged between the developing roller 120 and the housing 110 in the front-to-back direction, and the powder discharge knife 112 is used to control the thickness of the developer covering the outer surface of the developing roller 120, and to keep the thickness of the developer covering the developing roller 120 consistent, so as to improve the imaging quality of the developing box 100.

[0038] The chip 180 has an electrical contact surface 181, which is located on the left side of the developer box 100 in the left-right direction. The chip 180 stores information of the developer box 100. When the developer box 100 is installed in the electronic photographic imaging device, the electrical contact surface 181 is electrically connected to an electrical connection component (not shown) in the electronic photographic imaging device, so that the electronic photographic imaging device can establish a communication connection with the chip 180 through the electrical contact surface 181.

[0039] like Figure 4 As shown, the detected protrusion 170 is arranged on the right side of the developing box 100; the detected protrusion 170 can be moved relative to the shell 101 to be detected by the electronic photographic imaging device, thereby providing the electronic photographic imaging device with information such as whether the developing box 100 is a new box, and the detected protrusion 170 can move the detection member (not shown) in the electronic photographic imaging device to transmit information such as whether the developing box 100 is a new box to the electronic photographic imaging device; a right cover 192 for protecting the detected protrusion 170 is provided on the right side of the shell 110, and at least a portion of the detected protrusion 170 is exposed through the through hole on the right cover 192, so that the detected protrusion 170 can move the detection body (not shown).

[0040] like Figure 5-6 As shown, the electrode 160 is arranged on the right side of the shell 110 in the left-right direction, and the electrode 160 can contact the power supply device 12 inside the electronic photographic imaging device, so that the electrode 160 receives power from the electronic photographic imaging device. The electrode 160 can be electrically connected to at least one of the developing roller 120, the powder feeding roller 130 and the powder outlet knife 112. In this embodiment, the electrode 160 can be electrically connected to the developing roller 120 and the powder feeding roller 130.

[0041] The electrode 160 includes a first contact 161, a first connecting member 162, and a second contact 163; the first contact 161 is configured as a columnar protrusion extending rightward from the right side of the housing 110 in the left-right direction, and the first contact 161 is configured using a conductive material, and the material used for the first contact 161 is preferably a conductive resin material; the first contact 161 is located closer to the rear end of the housing 110 relative to the front end of the housing 110 in the front-to-back direction, and the first contact 161 is farther from the front side of the housing 110 than the detected protrusion 170 in the front-to-back direction. When the developing cartridge 100 is mounted on the electrophotographic imaging device, the first contact 161 contacts the power supply device 12 of the electrophotographic imaging device to receive power from the electrophotographic imaging device.

[0042] Optionally, the first contact member 161 includes an extension portion 161a extending from the first contact member 161 in the front-to-back direction. When the developer box 100 is installed to the electronic photographic imaging device, the extension portion 161a has a larger surface area in the front-to-back direction and can contact the power supply device 12 extending in the front-to-back direction; the provision of the extension portion 161a increases the contactable area between the first contact member 161 and the power supply device 132, thereby making the connection between the developer box 100 and the electronic photographic imaging device more stable.

[0043] After the first contact member 161 receives electricity, the electricity is transmitted to the second contact member 163 through the first connecting member 162 which is a conductive component. The second contact member 163 is located at the front end portion on the right side of the shell 110. The second contact member 163 is constructed of a conductive material. Preferably, the second contact member 163 can be made of a conductive resin material; the second contact member 163 has a developing contact portion 163a that contacts the developing roller shaft 125 and a powder feeding contact portion 163b that contacts the powder feeding roller shaft 135, so that the second contact member 163 is in contact with the developing roller 120 and the powder feeding roller 130 respectively, and establishes an electrical connection with the developing roller 120 and the powder feeding roller 130, so that the second contact member 163 transmits electricity to the developing roller 120 and the powder feeding roller 130.

[0044] In order to realize the electrical connection between the first connecting member 161 and the second connecting portion 163, the first connecting member 162 is made of conductive material, and the first connecting member 162 is preferably made of metal iron or copper; the first connecting member 162 is L-shaped as a whole, one end of the first connecting member 162 is connected to the first connecting member 161, the part of the first connecting member 162 close to the first contact member 161 extends to the bottom of the detected protrusion 170 and the coupling gear 150 in the vertical direction, and the part of the first connecting member 162 away from the first contact member 161 extends to the second contact member 163 in the front-to-back direction. Specifically, the first connecting member 162 is configured in an "L" shape, which can avoid the moving range of the detected protrusion 170 and the coupling gear 150, thereby optimizing the structure of the developing box 100, reducing the possibility of interference between the electrode 160 and the functional components such as the detected protrusion 170, and improving the stability of the electrical connection between the developing box 100 and the electronic photographic imaging device.

[0045] Preferably, the second connecting portion 163 can also serve as a bearing component on the right side of the shell 110 for supporting the developing roller 120 and the powder feeding roller 130. More specifically, the developing contact portion 163a and the powder feeding contact portion 163b are respectively constructed as holes for supporting the developing roller 120 and the powder feeding roller 130. When projected in the left and right directions, the projection range of the second connecting portion 163 is outside the projection range of the coupling gear 150, thereby preventing the second connecting portion 163 from interfering with the rotation of the coupling gear 150.

[0046] Preferably, Figure 7-8 As shown, after the developer box 100 is installed in the electronic photographic imaging device, the power supply device 12 contacts with the lower part of the first contact member 161; after the coupling gear 150 receives the driving force, the developer box 100 has a counterclockwise rotation movement tendency observed from the right side of the developer box 100 along the left and right directions, that is, the first contact member 161 located at the rear end of the left side of the developer box 100 has a downward movement tendency to provide a downward thrust to the power supply device 12, so that the first contact member 161 can use the driving force received by the coupling gear 150 to make the contact between the first contact member 161 and the power supply device 12 more stable; preferably, projected along the left and right directions, the projection range of the first contact member 161 is outside the projection range of the coupling gear 150, and the first contact member 161 is at a greater distance from the axis of the coupling gear 150, so that the first contact member 161 can obtain a larger torque, so that the first contact member 161 has a larger thrust on the power supply device 12, so that the contact between the first contact member 161 and the power supply device 12 is more stable.

[0047] Furthermore, in the left-right direction, the projection range of the first connecting member 162 and the second contact member 163 is outside the projection range of the coupling gear 150, thereby avoiding contact between the electrode 160 and other components and further reducing mutual interference between the electrode 160 and other components.

[0048] Embodiment 2:

[0049] Next, we will combine the Figure 9-10 Embodiment 2 of the present invention is described in detail. Embodiment 2 provides a developing box. The similarities between the developing box of this embodiment and the developing box in the above-mentioned embodiment 1 will not be repeated in this embodiment. The difference is that the electrodes in this embodiment have different settings from those in embodiment 1.

[0050] Specifically, in this embodiment, the electrode 260 includes a third contact member 261, a second connecting member 262 and a fourth contact member 263; the third contact member 261 is constructed as a columnar protrusion extending rightward in the left-right direction from the right rear end portion of the shell 110, and the third contact member 261 is located near the rear end portion of the shell 110 in the front-to-back direction. The fourth contact member 263 is constructed as a bearing component for supporting the developing roller 120 and the powder feeding roller 130 on the left side of the housing 110, and the fourth contact member 263 is electrically connected to the developing roller 120 and the powder feeding roller 130 respectively; the second connecting member 262 is used to electrically connect the third contact member 261 and the fourth contact member 263; the second connecting member 262 is constructed of a conductive material, and the second connecting member 262 is preferably made of metal iron or copper; one end of the second connecting member 262 is connected to the third contact member 261, and the part of the second connecting member 262 close to the first contact member 161 extends to the bottom of the housing 110 in the up and down direction, and the middle part of the second connecting member 262 extends from the right side of the housing 110 to the left side of the housing 110 along the length direction (left and right direction) of the housing 110, and the part of the second connecting member 262 away from the first contact member 161 extends to the fourth contact member 263 in the front and back direction, so that the developing roller 120 and the powder feeding roller 130 can receive power from the electronic photographic imaging device, thereby successfully completing the imaging operation.

[0051] 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, include: A housing, wherein the housing has a first side and a second side separated from each other in a first direction, and the housing has a third side and a fourth side separated from each other in a second direction intersecting the first direction; a developing roller, located on the third side of the housing in the second direction, the developing roller being rotatable about a developing roller axis extending in the first direction; A powder feeding roller, used for feeding developer to the developing roller, the powder feeding roller being rotatable around an axis of the powder feeding roller extending in the first direction; A powder knife, used for controlling the thickness of the developer on the developing roller; A coupling gear, located on the first side of the housing, the coupling gear can receive a driving force from the outside of the developing box and drive the developing roller to rotate; an electrode having an electrical contact portion, the electrical contact portion being exposed on the second side of the housing in the first direction, the electrode being electrically connectable to at least one of the developing roller, the powder feeding roller and the powder discharge knife; It is characterized in that the electrical contact portion is closer to the fourth side of the shell relative to the third side of the shell in the second direction; and when projected along the first direction, the electrode is outside the projection range of the coupling gear.

2. The developing cartridge according to claim 1, It is characterized in that In the second direction, the electrical contact portion is farther from the third side of the housing than the coupling gear.

3. The developing cartridge according to claim 1, It is characterized in that A detected protrusion is also included, which is located on the second side of the housing in the first direction, and the detected protrusion is movable according to the rotation of the coupling gear. In the second direction, the electrical contact portion is closer to the developing roller than the detected protrusion.

4. The developing cartridge according to claim 1, It is characterized in that It also includes an electrical connector connected to the electrical contact portion, and is projected along the first direction, and the electrical connector is outside the projection range of the coupling gear.

5. The developing cartridge according to claim 4, It is characterized in that At least a portion of the electrical connector extends in the second direction.

6. The developing cartridge according to claim 4, It is characterized in that At least a portion of the electrical connector extends from the first side of the housing to the second side of the housing.

7. The developing cartridge according to claim 4, It is characterized in that In a third direction intersecting the first direction and the second direction, at least a portion of the electrical connector extends from top to bottom to below the coupling gear.

8. The developing cartridge according to claim 4, It is characterized in that It also includes a bearing plate for supporting the developing roller and the powder feeding roller. The bearing plate is electrically connected to the electrical connector and is made of conductive material.

9. The developing cartridge according to claim 1, It is characterized in that It also includes a bearing plate for supporting the developing roller and the powder feeding roller, which is projected along the first direction, and the bearing plate is outside the projection range of the coupling gear.

10. The developing cartridge according to claim 1, It is characterized in that The electrical contact portion is configured as a protrusion extending in the first direction.

Images