CN211603846U - Auxiliary wheel fixed developing roller - Google Patents
Auxiliary wheel fixed developing roller Download PDFInfo
- Publication number
- CN211603846U CN211603846U CN201922097898.XU CN201922097898U CN211603846U CN 211603846 U CN211603846 U CN 211603846U CN 201922097898 U CN201922097898 U CN 201922097898U CN 211603846 U CN211603846 U CN 211603846U
- Authority
- CN
- China
- Prior art keywords
- developing roller
- developer roll
- wheel
- distance
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003292 glue Substances 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 11
- 206010070834 Sensitisation Diseases 0.000 abstract description 6
- 230000008313 sensitization Effects 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000000428 dust Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Dry Development In Electrophotography (AREA)
Abstract
The utility model discloses an attach fixed developer roll of wheel, attach the spindle nose tight fit of wheel and developer roll fixed, just the distance between the center axis line of the outer anchor ring of attaching the wheel and developer roll is H, the distance of the working surface of developer roll and the central axis of developer roll is D, just 0 is less than or equal to H-D and is less than or equal to 0.1 mm. Through above-mentioned structure both increaseed the distance of developer roll with the sensitization drum to the sensitization drum need not extrude the developer roll just can adsorb the carbon dust, can guarantee the precision and the easy processing of the distance of developer roll and sensitization drum moreover.
Description
Technical Field
The utility model relates to a laser printer, especially a attach fixed developer roll of wheel.
Background
The common development mode of the laser printer is realized by adsorbing carbon powder on a development roller through a photosensitive drum.
There are generally two types of development methods: the jumping development and the contact development adopt an attached sleeve or an attached wheel in order to ensure the limit distance between the photosensitive drum and the developing roller, and the attached sleeve or the attached wheel is movably arranged at the two ends of the developing roller and can freely rotate at the two ends of the developing roller in order to be convenient to install and process. In contact development, the developing roller is usually a rubber roller, and the distance from the outer surface of the sleeve or wheel to the central axis of the developing roller is smaller than the distance from the outer surface of the rubber roller to the central axis of the developing roller, because the photosensitive drum needs to contact and press with the outer surface of the rubber roller to adsorb the carbon powder thereon to the electrostatic latent image area of the photosensitive drum.
However, in order to reduce the cost, the mechanical pulverized carbon powder is used, the mechanical pulverized carbon powder has edges and corners, the smoothness of the carbon powder is not higher than that of the prior chemical carbon powder, so that the torque of the developing roller is too large and powder is easily accumulated when the photosensitive drum contacts with the outer surface of the rubber roller to press belt powder, therefore, the structure is improved, the distance between the photosensitive drum and the developing roller is increased, the carbon powder on the developing roller is absorbed by simply utilizing the electric field force of the electrostatic latent image area, however, the above-mentioned distance accuracy of the distance between the developing roller and the photosensitive drum is very high, the electric field force is drastically reduced at a distance slightly longer than the distance, therefore, carbon powder cannot be adsorbed to the photosensitive drum from the developing roller, so that the prior auxiliary sleeve or auxiliary wheel structure cannot meet the precision requirement on the distance control between the developing roller and the photosensitive drum, and a novel developing roller structure is designed to achieve the purpose.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides an attach the cover or attach the fixed developer roll of wheel.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides an attach fixed developer roll of wheel, includes developer roll and attaches the wheel, its characterized in that: the auxiliary wheel is tightly matched and fixed with a shaft head of the developing roller, the distance between the outer annular surface of the auxiliary wheel and the central axis of the developing roller is H, the distance between the working surface of the developing roller and the central axis of the developing roller is D, and H-D is more than or equal to 0 and less than or equal to 0.06 mm.
A D-shaped hole is formed in the inner hole of the auxiliary wheel, and the shaft head of the developing roller is a D-shaped shaft matched with the D-shaped hole.
Glue is coated in the inner hole of the auxiliary wheel.
The surface of the shaft head is coated with glue.
The developing roller is a rubber roller.
The utility model has the advantages that: attach the wheel fixed with the spindle nose tight fit of developer roll, just attach the outer anchor ring of wheel and the distance between the center axis of developer roll is H, the working surface of developer roll is D with the distance of the central axis of developer roll, just 0 be less than or equal to H-D be less than or equal to 0.1 mm. Through above-mentioned structure both increaseed the distance of developer roll with the sensitization drum to the sensitization drum need not extrude the developer roll just can adsorb the carbon dust, can guarantee the precision and the easy processing of the distance of developer roll and sensitization drum moreover.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic cross-sectional view of the present invention, in which the developing roller is rubber-coated on the aluminum tube.
Fig. 2 is a schematic sectional view of the present invention, in which the developing roller is rubber-coated on the iron core.
Detailed Description
Referring to fig. 1 and 2, the utility model discloses an attach fixed developer roll of wheel, including developer roll 1 and attach wheel 2, the developer roll 1 is preferred rubber roller, and its surface is rubber, certainly can also be other rollers, attach wheel 2 and the spindle nose 3 tight fit of developer roll 1 are fixed, certainly in order to guarantee the fastness of connecting, guarantee to attach wheel 2 and spindle nose 3 do not have relative rotation and removal, we have glue or the surface of spindle nose 3 scribbles glue in the hole of attaching wheel 2, like this attach wheel 2 and spindle nose 3 crack all by glue fill up, connect more firmly; in order to ensure the reliability, a D-shaped hole is formed in the inner hole of the auxiliary wheel 2, and the shaft head 3 of the developing roller 1 is a D-shaped shaft matched with the D-shaped hole, so that the auxiliary wheel 2 and the shaft head 3 are ensured not to rotate relatively through a physical structure. The structure is mainly used for ensuring the processing precision, because the developing roller 1 preferably adopts a rubber roller, the rubber is elastic and difficult to process, and the thickness of the auxiliary wheel 2 cannot be used for controlling the precision of the difference value between the surface of the developing roller 1 and the surface of the auxiliary wheel 2, but the auxiliary wheel 2 is fixed on the shaft head 3 firstly, and then the rubber roller and the auxiliary wheel 2 are simultaneously ground to a preset size at one time by adopting a special grinding wheel on a grinding machine; and if there is relative rotation between the auxiliary wheel 2 and the spindle nose 3, the auxiliary wheel 2 can not be ground, and the auxiliary wheel 2 is easy to wear and deform in the later working process, and the distance between the outer ring surface and the central axis of the developing roller 1 is difficult to guarantee.
Because the requirement of electric field force adsorption on the precision of the distance is high, the distance between the outer ring surface of the auxiliary wheel 2 and the central axis of the developing roller 1 is H, the distance between the working surface of the developing roller 1 and the central axis of the developing roller 1 is D, and the distance H-D is more than or equal to 0 and less than or equal to 0.06mm, the carbon powder on the developing roller 1 can be adsorbed by the electric field force of the electrostatic latent image area within the dimension, and the most preferable value is H-D which is 0.02 mm.
The above detailed description is made on the fixed developing roller with wheels provided by the embodiment of the present invention, and the specific examples are applied herein to explain the principle and the implementation of the present invention, and the description of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (5)
1. The utility model provides an attach fixed developer roll of wheel, includes developer roll and attaches the wheel, its characterized in that: the auxiliary wheel is tightly matched and fixed with a shaft head of the developing roller, the distance between the outer annular surface of the auxiliary wheel and the central axis of the developing roller is H, the distance between the working surface of the developing roller and the central axis of the developing roller is D, and H-D is more than or equal to 0 and less than or equal to 0.06 mm.
2. The fixed developing roller with wheel according to claim 1, wherein: a D-shaped hole is formed in the inner hole of the auxiliary wheel, and the shaft head of the developing roller is a D-shaped shaft matched with the D-shaped hole.
3. The fixed developing roller with wheel according to claim 2, wherein: glue is coated in the inner hole of the auxiliary wheel.
4. The fixed developing roller with wheel according to claim 1, wherein: the surface of the shaft head is coated with glue.
5. The fixed developing roller with wheel according to claim 1, wherein: the developing roller is a rubber roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922097898.XU CN211603846U (en) | 2019-11-27 | 2019-11-27 | Auxiliary wheel fixed developing roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922097898.XU CN211603846U (en) | 2019-11-27 | 2019-11-27 | Auxiliary wheel fixed developing roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211603846U true CN211603846U (en) | 2020-09-29 |
Family
ID=72589672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922097898.XU Active CN211603846U (en) | 2019-11-27 | 2019-11-27 | Auxiliary wheel fixed developing roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211603846U (en) |
-
2019
- 2019-11-27 CN CN201922097898.XU patent/CN211603846U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A fixed developing roller with attached wheel Effective date of registration: 20211213 Granted publication date: 20200929 Pledgee: Science and Technology Branch of Torch Development Zone of Zhongshan Rural Commercial Bank Co.,Ltd. Pledgor: ZHONGSHAN BENMA PRINTING SUPPLIES Co.,Ltd. Registration number: Y2021980014797 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20200929 Pledgee: Science and Technology Branch of Torch Development Zone of Zhongshan Rural Commercial Bank Co.,Ltd. Pledgor: ZHONGSHAN BENMA PRINTING SUPPLIES Co.,Ltd. Registration number: Y2021980014797 |