CN213876326U - Developing box, processing box and electronic imaging equipment - Google Patents
Developing box, processing box and electronic imaging equipment Download PDFInfo
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- CN213876326U CN213876326U CN202022486349.4U CN202022486349U CN213876326U CN 213876326 U CN213876326 U CN 213876326U CN 202022486349 U CN202022486349 U CN 202022486349U CN 213876326 U CN213876326 U CN 213876326U
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Abstract
The utility model discloses a developing box, which is detachably arranged in a drum unit, the drum unit is detachably arranged in an electronic imaging device, and the electronic imaging device comprises a power supply component; the drum unit includes: a first housing; a photosensitive drum rotatably supported by the first housing and rotating along a steel shaft extending in a longitudinal direction of the first housing; the developing cartridge includes: a second housing; a developing roller rotatably supported to the second casing, the developing roller rotating along a developing roller shaft extending in a longitudinal direction of the second casing; the conductive part comprises an input contact, an output contact and a grounding contact; the input contact is electrically connected with the power supply component, the output contact is electrically connected with the developing roller shaft, and the grounding contact is grounded.
Description
Technical Field
The utility model relates to an electronic imaging technical field especially relates to a develop box, processing box and electronic imaging equipment.
Background
In order to achieve the purpose of miniaturization and cost reduction, the two electrodes are made into an integrated structure, until the developing roller and the powder feeding roller are powered by voltage received by an electrode contact (powder feeding roller electrode), the developing roller and the powder feeding roller are applied with the same voltage, and the printing quality of the image forming device is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a developing box can promote image forming device's printing quality, in order to reach above-mentioned technological effect, the utility model discloses a realize through following technical scheme:
a developing cartridge detachably mountable to a drum unit detachably mountable to an electronic image forming apparatus including a power supply member;
the drum unit includes: a first housing;
a photosensitive drum rotatably supported by the first housing and rotating along a steel shaft extending in a longitudinal direction of the first housing;
the developing cartridge includes:
a second housing;
a developing roller rotatably supported to the second casing, the developing roller rotating along a developing roller shaft extending in a longitudinal direction of the second casing;
the conductive part comprises an input contact, an output contact and a grounding contact; the input contact is electrically connected with the power supply component, the output contact is electrically connected with the developing roller shaft, and the grounding contact is grounded.
Further, the steel shaft is grounded, and the grounding contact is connected with the steel shaft.
Further, the conductive part further includes a first impedance unit and a second impedance unit, the first impedance unit is electrically connected between the input contact and the output contact, and the second impedance unit is electrically connected between the output contact and the ground contact.
Further, the resistance value of the first impedance unit is greater than 1M Ω, and the resistance value of the second impedance unit is greater than 1M Ω.
Further, the first impedance unit includes a first connection section, and the second impedance unit includes a second connection section, the first connection section being configured as a resin having conductivity, and the second connection section being configured as a resin having conductivity.
Further, the first impedance unit includes a first connection conductor and a first resistance element provided on the connection conductor, and the second impedance unit includes a second connection conductor and a second resistance element provided on the second connection conductor; the resistance value of the first resistance element is larger than 1M omega, and the resistance value of the second resistance element is larger than 1M omega.
Further, the conductive portion includes a first plane, a second plane, and a stepped portion or a slope connecting the first plane and the second plane.
Further, the conductive part further comprises a voltage reduction chip, an input pin of the voltage reduction chip is connected with the input contact, an input pin of the voltage reduction unit is connected with the output contact, and a grounding pin of the voltage reduction chip is grounded.
The utility model also provides a processing box, detachable install in electronic imaging equipment, electronic imaging equipment includes the power supply part, and it includes:
a drum unit comprising:
a first housing;
a photosensitive drum rotatably supported by the first housing and rotating along a steel shaft extending in a longitudinal direction of the first housing;
and the developing cartridge described above.
The utility model also provides an electronic imaging equipment, include:
a power supply member;
and the developing box is detachably arranged in the electronic imaging equipment.
After the technical scheme is adopted, the utility model provides a new electricity transmission structure, input contact, output contact and ground contact form complete electricity transmission return circuit, insert voltage through the power supply part of input contact in from electronic imaging equipment, export to the developer roll by the output contact after handling, realize the developer roll and apply the adaptation of voltage, guaranteed electronic imaging equipment's printing quality.
Drawings
Fig. 1 is a schematic perspective view of a process cartridge according to a first embodiment of the present invention;
FIG. 2 is a schematic view of an exploded view of a first angle of a process cartridge according to an embodiment of the present invention;
FIG. 3 is a schematic view of a first angle of the processing box according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of a neutralizing drum unit without a first shell at a first angle according to an embodiment of the present invention;
FIG. 5 is a schematic view of a second angle partially exploded view of a developing cartridge according to a first embodiment of the present invention;
fig. 6 is a schematic perspective view of a supporting bracket of a developing cartridge according to a first embodiment of the present invention;
fig. 7 is a schematic perspective view of a conductive bracket of a developing cartridge according to a first embodiment of the present invention;
fig. 8 is a schematic perspective view of a conductive bracket of a developing cartridge according to a first embodiment of the present invention;
fig. 9 is an equivalent circuit schematic diagram of a conductive bracket of a developing cartridge according to a first embodiment of the present invention;
fig. 10 is a schematic perspective view of a conductive portion of a developing cartridge according to a second embodiment of the present invention;
fig. 11 is a schematic perspective view of a developing cartridge according to a third embodiment of the present invention;
fig. 12 is an exploded schematic view of a developing cartridge according to a third embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 12, the present invention provides an electronic imaging apparatus, comprising: the power supply member and the process cartridge, wherein the process cartridge is detachably mountable to an electrophotographic apparatus, and includes a drum unit and a developing cartridge.
The drum unit 1 includes a photosensitive drum 11, a charging roller 12, and a first casing 13. The first housing 13 has a first side surface and a second side surface which are arranged oppositely in the longitudinal direction, the first side surface is arranged at the non-driving end of the developing box, and the second side surface is arranged at the driving end of the developing box; the photosensitive drum 11 extends along a longitudinal direction and is rotatably supported between the first side and the second side, and a coupling member is disposed on the second side of the photosensitive drum 11 on the first housing 13, and the coupling member passes through the second side and is exposed out of the second side for receiving a driving force of the image forming apparatus and driving the photosensitive drum 11 to rotate. The charging roller 12 is rotatably supported between the first side and the second side so that the charging roller 12 can rotate in contact with the photosensitive drum 11 as the photosensitive drum 11 rotates. The first housing 13 is formed with a waste toner hopper for accommodating a developer remaining after transfer between the first side surface and the second side surface.
When the developing cartridge is mounted in the electrophotographic apparatus for use, the developing cartridge 2 is now mounted in the drum unit 1, forming a split type process cartridge structure. The developing cartridge 2 includes a developing roller 21, a powder feed roller 22, and a second casing 23. The second housing 23 is formed with a powder hopper for accommodating developer; the developing roller 21 extends in the longitudinal direction, for carrying developer, is rotatably provided in the second casing 23 and is contactable with the photosensitive drum 11; the powder feed roller 22 is provided in the powder hopper extending in the longitudinal direction and is contactable with the developing roller 21 to charge the developer.
The developing cartridge 2 further includes a receiving bracket 24 which is an insulator, preferably an insulating plastic member, and which is provided with a developing roller bearing 241 and a powder feeding roller bearing 242, and an end of the developing roller shaft of the developing roller 21 on the conductive side is rotatably supported in the developing roller bearing 241, and an end of the powder feeding roller shaft of the powder feeding roller 22 on the conductive side is rotatably supported in the powder feeding roller bearing 242.
The developing cartridge 2 further includes a conductive portion 3, the conductive portion 3 including a conductive holder 31 including an input contact 311, an output contact 312, a ground contact 313, a first connecting section 314, and a second connecting section 315, and an electric connector 32; among them, a first connection section 314 is formed between the input contact 311 and the output contact 312, a second connection section 315 is formed between the output contact 312 and the ground contact 313, the input contact 311 is electrically connected to a power supply member (not shown) in the image forming apparatus, the output contact 312 is electrically connected to the developing roller 21 through the electrical connector 32, and the ground contact 313 is grounded. In the present embodiment, the grounding contact 313 is electrically connected to the steel shaft 14 of the photosensitive drum 11, and since the steel shaft 14 of the photosensitive drum 11 is grounded, the grounding contact 313 may be grounded through the steel shaft 14 of the photosensitive drum 11. The first connection section 314 is configured as a first impedance unit, and the second connection section 315 is configured as a second impedance unit.
The conductive support 31 is a conductor with certain impedance, in this embodiment, the conductive support 31 is configured as a resin with conductivity, and a voltage is applied through the input contact 311, and in other alternative embodiments, the conductive support 31 may be a conductive metal or the like. The input contact 311 is connected to the power supply unit of the image forming apparatus, and the power supply unit, the conductive bracket 31, the steel shaft 14 of the photosensitive drum 11 and the ground form a closed voltage dividing loop, specifically, the conductor portion of the first connection section 314 is formed as a first resistor R1, the conductor portion of the second connection section 315 is formed as a second resistor R2, the voltage applied to the input contact 311 generates a divided charging voltage at the output contact 312 through the divided voltage of the first resistor R1 and the second resistor R2, specifically, assuming that the voltage applied to the input contact 311 is V and the voltage applied to the output contact 312 is V1, the charging voltage V1 applied to the output contact 312 is V R2/(R1+ R2), for example, the charging voltage V1 required by the developing roller 21 in the developing box is 400V, and the voltage V applied to the actual input contact 311 from the power supply unit is 600V, at this time, the resistance of the second resistor R2 needs to be set twice the resistance of the first resistor R1, namely, R2 ═ 2R1, i.e., V1 ═ 600V × 2R 1/(R1 +2R1) ═ 400V. In practical application, the resistance values of the first resistor R1 and the second resistor R2 can be adjusted according to the voltage accessed by the input contact 311 and the actual required voltage of the developing roller 21, and the developing roller is flexible in design and high in compatibility.
The electric connection member 32 is configured of rubber or metal having conductivity, the receiving bracket 24 is provided with a connection hole 243, the electric connection member 32 is disposed in the connection hole 243, one end of the electric connection member 32 is connected to the developing roller shaft, the other end of the electric connection member 32 is connected to the output contact 312 of the conductive bracket 31, the conductive bracket 31 is provided with a fixing post 316, and the other end of the electric connection member 32 is fitted over the fixing post 316. In the present embodiment, in order to counteract the run-out during the rotation of the developing roller 21 and ensure good electrical contact, the electrical connection member 32 is configured as an elastic member having electrical conductivity, such as a compression spring made of metal, and the electrical connection member 32 is in a compressed state after being mounted, and the force generated by the elastic deformation of the compression spring ensures effective abutment of the electrical connection member with the output contact 312 and the developing roller shaft, and ensures the electrical power transmission between the conductive holder 31 and the developing roller 21.
The conductive bracket 31 is made of conductive materials of megaohm resistors, the resistance value of the first resistor R1 and the resistance value of the second resistor R2 are both greater than 1 megaohm, the output voltage value of the existing imaging device is approximately hundreds of volts, and the magnitude of the current formed in the voltage division loop is less than milliampere. In this embodiment, the conductive holder is made of a material formed by adding a predetermined proportion of metal powder to POM (Polyoxymethylene), and the material has a certain weak conductivity, so that when the input contact 311 is connected to a voltage, a predetermined voltage value of the charging voltage is formed at the output contact 312. In practical applications, the ratio of the metal powder in the conductive support 31 can be adjusted according to practical applications to adjust the impedance values of the first connection section 314 and the second connection section 315.
The first connection section 314 and the second connection section 315 are located on different planes, the first connection section 314 of the conductive bracket 31 is disposed on the second housing 21, the second connection section 315 is disposed on the surface of the first housing 11, the first connection section 314 is located on the first plane, the second connection section 315 is located on the second plane, and the output contact 312 has a stepped surface for connecting the first plane and the second plane. Since the conductive bracket 31 is connected between the first plane and the second plane through the slope or the step surface, when the developing cartridge is mounted to the image forming apparatus, the slope or the step surface can play a role of guiding, so that the mounting process is smooth, and after the mounting is in place, the power supply part of the image forming apparatus contacts with the input contact 311 located on the first plane of the conductive bracket 31, so that stable electrical connection can be established.
The utility model discloses a developing box provides a new electricity transmission structure, and input contact, output contact and ground contact form complete electricity transmission return circuit, and power supply part through the input contact in from electronic imaging equipment inserts voltage, exports to the developer roll by the output contact after handling, realizes that the developer roll applys the adaptation of voltage, has guaranteed electronic imaging equipment's printing quality.
Example two
As shown in fig. 10, in the present embodiment, the conductive part 3 includes-a first impedance unit and a second impedance unit. The first impedance unit includes a first connection conductor 414 and a first resistance element 416 disposed on the first connection conductor, and the second impedance unit includes a second connection conductor 415 and a second resistance element 417 disposed on the second connection conductor 415; the first resistive element 416 has a resistance greater than 1M Ω and the second resistive element 417 has a resistance greater than 1M Ω. The first connecting conductor 414 and the second connecting conductor 415 are benign conductors, and have a resistance value much smaller than that of the first resistance element 416 and the second resistance element 416, which is negligible.
In this embodiment, in order to keep the overall structure of the developing cartridge stable, the first connection conductor 414 and the second connection conductor 415 are formed as conductive rubber or conductive metal pieces, and the first resistance element 416 and the second resistance element 417 may be embedded in and disposed on the first connection conductor 414 and the second connection conductor 414, respectively, electrically connected to the conductive rubber, or correspondingly soldered on the conductive metal pieces. The input contact 411 and the output contact 412 are each configured of a conductive rubber or a conductive metal sheet, a first connecting conductor 414 is electrically connected between the input contact 411 and the output contact 412, a second connecting conductor 415 is electrically connected between the output contact 412 and the ground contact 313, the input contact 411 can be connected to a power supply member in the image forming apparatus to receive a voltage, the output contact 412 and the output contact 412 are electrically connected to the developing roller 21 through an electrical connector 32, and the ground contact 413 can be grounded through the steel shaft 14 of the photosensitive drum 11. In one embodiment, the ground contact 413 may be formed of one end of the second connection conductor 417 through which the steel shaft 14 of the photosensitive drum 11 is directly connected to ground.
The power supply component, the first resistor R1 element, the second resistor R2 element, the steel shaft 14 of the photosensitive drum 11 and the ground form a closed voltage division loop, the voltage connected to the input contact 311 generates a divided charging voltage at the output contact 312 through the voltage division of the first resistor element 416 and the second resistor element 417, and an equivalent circuit thereof is the same as that in the first embodiment and is not repeated here. In practical application, the resistor elements with different resistance values can be selected according to practical conditions, the existing structure of the developing box is not required to be changed, the design is simplified, and the production cost is reduced.
EXAMPLE III
As shown in fig. 11 and 12, in the present embodiment, the conductive part 3 includes the step-down chip 4, the input pin of the step-down chip 4 is connected to the input contact 511, the output pin of the step-down chip 4 is connected to the output contact 512, and the steel shaft 14 of the grounding pin of the step-down chip 4 of the photosensitive drum 11 is grounded. The second casing 23 is provided with a chip holder on which the voltage step-down chip 4 is detachably mounted, and each pin of the voltage step-down chip 4 can be connected to each contact of each conductive part through a wire. The voltage reduction chip is connected with voltage through the input contact, the voltage of output and developing roller looks adaptation after voltage reduction is carried out to the chip, and then the voltage is directly output to the developing roller through the output contact, so that a complex conductive structure is not needed, the voltage is stable, and the development box is miniaturized.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A developing cartridge detachably mountable to a drum unit detachably mountable to an electronic image forming apparatus including a power supply member;
the drum unit includes: a first housing;
a photosensitive drum rotatably supported by the first housing and rotating along a steel shaft extending in a longitudinal direction of the first housing;
the developing cartridge includes:
a second housing;
a developing roller rotatably supported to the second casing, the developing roller rotating along a developing roller shaft extending in a longitudinal direction of the second casing;
the circuit is characterized by further comprising a conductive part, wherein the conductive part comprises an input contact, an output contact and a grounding contact; the input contact is electrically connected with the power supply component, the output contact is electrically connected with the developing roller shaft, and the grounding contact is grounded.
2. A developing cartridge according to claim 1, wherein said steel shaft is grounded, and said ground contact is connected to said steel shaft.
3. A developing cartridge according to claim 1, wherein said conductive portion further includes a first impedance unit and a second impedance unit, said first impedance unit being electrically connected between said input contact and said output contact, said second impedance unit being electrically connected between said output contact and said ground contact.
4. A developing cartridge according to claim 3, wherein the resistance value of the first resistance unit is larger than 1M Ω, and the resistance value of the second resistance unit is larger than 1M Ω.
5. A developing cartridge according to claim 3, wherein said first resistance unit includes a first connection section, and said second resistance unit includes a second connection section, said first connection section being configured as a resin having conductivity, and said second connection section being configured as a resin having conductivity.
6. A developing cartridge according to claim 3, wherein said first resistance unit includes a first connecting conductor and a first resistance element provided on said first connecting conductor, and said second resistance unit includes a second connecting conductor and a second resistance element provided on said second connecting conductor; the resistance value of the first resistance element is larger than 1M omega, and the resistance value of the second resistance element is larger than 1M omega.
7. A developing cartridge according to claim 1, wherein said conductive portion includes a first flat surface, a second flat surface, and a stepped portion or a slope connecting said first flat surface and said second flat surface.
8. The developing cartridge according to claim 1, wherein the conductive portion further includes a step-down chip, an input pin of the step-down chip is connected to the input contact, an output pin of the step-down chip is connected to the output contact, and a ground pin of the step-down chip is grounded.
9. A process cartridge detachably mountable to an electronic image forming apparatus including a power supply member, characterized by comprising:
a drum unit comprising:
a first housing;
a photosensitive drum rotatably supported by the first housing and rotating along a steel shaft extending in a longitudinal direction of the first housing;
and the developing cartridge according to any one of claims 1 to 8 detachably mounted in the drum unit.
10. An electronic imaging device, comprising:
a power supply member;
and the developing cartridge according to any one of claims 1 to 8 detachably mountable to an electrophotographic apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022486349.4U CN213876326U (en) | 2020-11-02 | 2020-11-02 | Developing box, processing box and electronic imaging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022486349.4U CN213876326U (en) | 2020-11-02 | 2020-11-02 | Developing box, processing box and electronic imaging equipment |
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| Publication Number | Publication Date |
|---|---|
| CN213876326U true CN213876326U (en) | 2021-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022486349.4U Active CN213876326U (en) | 2020-11-02 | 2020-11-02 | Developing box, processing box and electronic imaging equipment |
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| CN (1) | CN213876326U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114442449A (en) * | 2020-11-02 | 2022-05-06 | 江西亿铂电子科技有限公司 | Developing box, processing box and electronic imaging equipment |
| WO2024093949A1 (en) * | 2022-10-30 | 2024-05-10 | 朱雨 | Process cartridge |
-
2020
- 2020-11-02 CN CN202022486349.4U patent/CN213876326U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114442449A (en) * | 2020-11-02 | 2022-05-06 | 江西亿铂电子科技有限公司 | Developing box, processing box and electronic imaging equipment |
| WO2024093949A1 (en) * | 2022-10-30 | 2024-05-10 | 朱雨 | Process cartridge |
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