CN214504126U - Regional powder feeding roller - Google Patents
Regional powder feeding roller Download PDFInfo
- Publication number
- CN214504126U CN214504126U CN202120284888.1U CN202120284888U CN214504126U CN 214504126 U CN214504126 U CN 214504126U CN 202120284888 U CN202120284888 U CN 202120284888U CN 214504126 U CN214504126 U CN 214504126U
- Authority
- CN
- China
- Prior art keywords
- powder
- developer roll
- bisque
- send
- sending
- 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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- 239000000843 powder Substances 0.000 title claims abstract description 58
- 239000002184 metal Substances 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 25
- 229910052799 carbon Inorganic materials 0.000 abstract description 10
- 239000000428 dust Substances 0.000 abstract description 10
- 229910002114 biscuit porcelain Inorganic materials 0.000 abstract description 7
- 230000005684 electric field Effects 0.000 abstract description 4
- 206010070834 Sensitisation Diseases 0.000 abstract description 2
- 239000003292 glue Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000008313 sensitization Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Images
Abstract
The utility model discloses a divide regional formula to send whitewashed roller, the utility model discloses send the powder layer to fall into the middle of sending the bisque and the end send the bisque with the powder layer of sending of the outer parcel of metal core, thereby make the end send the bisque and the produced frictional force of developer roll contact to be greater than the middle produced frictional force of sending bisque and developer roll contact, the old carbon dust at developer roll both ends can be scraped and attach new carbon dust by sending the bisque when rubber roller and developer roll contact send powder like this, just so can not cause old carbon dust to amass to press to glue at the developer roll both ends, also can not form the composition layer, the carbon dust at developer roll both ends can fully rub and electrified, thereby can form the reverse electric field force that resists the electric field force attraction of sensitization drum, avoid the production on various limit, the printing quality has been improved.
Description
Technical Field
The utility model relates to a laser printer, especially a laser printer's powder feeding roller.
Background
Some models of color laser printers adopt a rubber roller (powder feeding roller) to feed powder to a developing roller to realize printing, the structure of the rubber roller is mostly sponge with porous iron core outsides, and in the printing process, black and black color edges are easy to appear on two sides of printing paper when large-scale characters or figures are printed in winter, so that the printing quality is seriously influenced.
The reason why the above-mentioned color fringes appear is that: because the area printed during frequent printing is not very large at ordinary times, the carbon powder at the two ends of the developing roller does not participate in the development, the charge of the carbon powder is larger in dry weather in winter, and the friction force between the sponge and the developing roller is not very large, so that the old carbon powder at the two end parts of the developing roller is easy to be accumulated and adhered at the two end parts of the developing roller, when the rubber roller contacts with the developing roller to send powder, the rubber roller can not scrape the old carbon powder from the two ends of the developing roller and then replace the old carbon powder with new carbon powder, the old carbon powder is accumulated to form an old carbon powder layer at the two ends of the developing roller, the two ends of the developing roller can form carbon powder layers at the moment, a new carbon powder layer is coated outside the old carbon powder layer, but the new carbon powder layer is very thin, and because the belt can not be fully rubbed with enough electric quantity, the new carbon powder layer can be absorbed by the photosensitive drum when the development is not carried out, so that colored edges are formed on two sides of the printing paper when the printing is carried out.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a subregion formula developer roller.
The utility model provides a technical scheme that its technical problem adopted is:
a subregion formula powder feed roller, includes the metal core, its characterized in that: the metal core is provided with a middle powder feeding layer, two ends of the middle powder feeding layer are provided with end powder feeding layers, and the friction force generated by the contact of the end powder feeding layers and the developing roller is larger than the friction force generated by the contact of the middle powder feeding layers and the developing roller.
The thickness of the end powder supply layer is larger than that of the middle powder supply layer.
The hardness of the end powder supply layer is greater than that of the middle powder supply layer.
The utility model has the advantages that: the utility model discloses send the powder layer to divide into the middle powder layer of sending and hold the powder layer with the outer parcel of metal core, thereby make the end send the powder layer and the produced frictional force of developer roll contact with the developer roll contact is greater than the middle powder layer of sending and the produced frictional force of developer roll contact, the old carbon dust at developer roll both ends can be scraped and attach new carbon dust by sending the powder roll when rubber roller and developer roll contact send powder like this, just so can not cause old carbon dust to amass to press to glue at the developer roll both ends, also can not form the layering, the carbon dust at developer roll both ends can fully rub and electrified, thereby can form the reverse electric field power that resists the electric field power attraction of sensitization drum, avoid the production on various limit, the printing quality has been improved.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Detailed Description
Referring to fig. 1 and 2, the utility model discloses a divide regional formula powder feed roller, including metal core 1, metal core 1 is conventional iron core, send bisque 2 in the middle of being equipped with on metal core 1, and send bisque 2 both ends in the middle of being equipped with to hold the powder layer 3, hold the produced frictional force of powder layer 3 and developer roll contact and be greater than the produced frictional force of middle powder layer 2 and developer roll contact of sending.
In this application embodiment one, middle powder layer 2 and the end powder layer 3 of sending are all processed out with material an organic whole, are conventional sponge and make, the thickness that end powder layer 3 was sent is greater than the thickness that middle powder layer 2 was sent, we are in abrasive machining, and the position grinding volume at both ends is less, thereby form the structure that the thickness that end powder layer 3 sent is greater than middle powder layer 2's of sending thickness, like this when contacting with the developer roll, the sponge of both ends portion is compressed greatly, thereby the sponge of both ends portion and the frictional force of developer roll have been increased, thereby can scrape the old carbon dust at developer roll both ends.
In this application embodiment two, middle powder layer 2 and the end powder layer 3 of sending adopt different materials to process out, the hardness that end powder layer 3 sent is greater than middle hardness of sending powder layer 2, and even if the middle thickness that send powder layer 2 and end powder layer 3 to be is the same, the hardness that end powder layer 3 sent is great its elastic force that produces by the developer roll extrusion also can be than middle powder layer 2 that send, thereby produces great frictional force and scrapes the old carbon dust at developer roll both ends.
The structure can cause the surface of the powder feeding roller to be uneven, so that the carbon powder fed onto the developing roller is slightly unevenly distributed, but the carbon powder on the developing roller is also scraped by a scraper to carry charges before participating in development, and the final developing effect is not influenced due to slight unevenness.
The above detailed description is made on the zoned powder feeding roller 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 (3)
1. A subregion formula powder feed roller, includes the metal core, its characterized in that: the metal core is provided with a middle powder feeding layer, two ends of the middle powder feeding layer are provided with end powder feeding layers, and the friction force generated by the contact of the end powder feeding layers and the developing roller is larger than the friction force generated by the contact of the middle powder feeding layers and the developing roller.
2. The zoned powder feed roller of claim 1, wherein: the thickness of the end powder supply layer is larger than that of the middle powder supply layer.
3. The zoned powder feed roller of claim 1, wherein: the hardness of the end powder supply layer is greater than that of the middle powder supply layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120284888.1U CN214504126U (en) | 2021-02-01 | 2021-02-01 | Regional powder feeding roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120284888.1U CN214504126U (en) | 2021-02-01 | 2021-02-01 | Regional powder feeding roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214504126U true CN214504126U (en) | 2021-10-26 |
Family
ID=78218404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120284888.1U Active CN214504126U (en) | 2021-02-01 | 2021-02-01 | Regional powder feeding roller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214504126U (en) |
-
2021
- 2021-02-01 CN CN202120284888.1U patent/CN214504126U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |