CN212364796U - Photosensitive drum structure of laser printer - Google Patents
Photosensitive drum structure of laser printer Download PDFInfo
- Publication number
- CN212364796U CN212364796U CN202020450298.7U CN202020450298U CN212364796U CN 212364796 U CN212364796 U CN 212364796U CN 202020450298 U CN202020450298 U CN 202020450298U CN 212364796 U CN212364796 U CN 212364796U
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- China
- Prior art keywords
- magnetic
- magnetic stripe
- carbon powder
- imaging
- regional
- 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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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 206010070834 Sensitisation Diseases 0.000 claims abstract description 15
- 230000008313 sensitization Effects 0.000 claims abstract description 15
- 230000005389 magnetism Effects 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 16
- 238000003384 imaging method Methods 0.000 abstract description 10
- 238000007639 printing Methods 0.000 abstract description 6
- 230000005684 electric field Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000018109 developmental process Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 3
- 239000010882 bottom ash Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007648 laser printing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Images
Landscapes
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
Abstract
The utility model discloses a laser printer's sensitization drum structure, the utility model discloses a set up vice magnetic stripe on the iron core, when the sensitization drum rotated main magnetic stripe and vice magnetic stripe position between the two, the magnetic carbon powder on the sensitization drum can receive the magnetic field repulsion force that main magnetic stripe and vice magnetic stripe both formed, thereby electric field force and magnetic field repulsion force combined action release sensitization drum surface with the regional magnetic carbon powder of non-imaging, the regional magnetic carbon powder of imaging also receives the effect of magnetic field repulsion force, but push away the regional magnetism carbon powder of imaging by magnetic field repulsion force alone, therefore we can clear away the regional magnetic carbon powder of remaining of non-imaging from the higher authority, the problem of end ash has been avoided printing to appear.
Description
Technical Field
The utility model relates to a, especially a laser printer's sensitization drum structure.
Background
The contact development method is one of the main development methods of laser printing. Most laser printers such as samsung and brothers adopt the development method, and color printers such as hewlett packard and canon also adopt the technology. The development mode requires direct contact between the photosensitive drum and the development roller, the damage to the photosensitive drum is large, the rotation torque is large, the precision requirement of each component is high, the manufacturing cost is high, the printing quality is unstable, in order to solve the problem, the applicant proposes a mode of installing a magnetic strip in the photosensitive drum to solve and apply for a patent (a development device 201120041802.9 of a laser printer), but the structure still has problems because the magnetic carbon powder is charged but the quantity of the charges of the magnetic carbon powder is not uniform, so that some charges are high, some charges are low, because the non-imaging area of the photosensitive drum cannot have the magnetic carbon powder, or bottom ash and other problems which affect the printing quality are caused, so that the non-imaging area of the photosensitive drum has high voltage, an electric field is formed to repel the magnetic carbon powder, but because some charges of the magnetic carbon powder are low, the resulting electric field is not sufficiently repelled to form bottom ash on the non-image-forming areas of the photoreceptor drum, and improvements to the above problems are needed.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a photosensitive drum structure of a laser printer.
The utility model provides a technical scheme that its technical problem adopted is:
laser printer's sensitization drum structure, be equipped with the iron core in the sensitization drum, be equipped with main magnetic stripe on this iron core, its characterized in that: the iron core is provided with auxiliary magnetic strips with the same magnetism as the main magnetic strips, and the included angle between the main magnetic strips and the auxiliary magnetic strips is 5-15 degrees.
The iron core is provided with a sleeve, and the main magnetic strip and the auxiliary magnetic strip are both arranged on the sleeve.
The utility model has the advantages that: the utility model discloses a set up vice magnetic stripe on the iron core, when the sensitization drum rotated main magnetic stripe and vice magnetic stripe position between the two, the magnetic carbon powder on the sensitization drum can receive the magnetic field repulsion force that main magnetic stripe and vice magnetic stripe formed between them, thereby electric field force and magnetic field repulsion force combined action release sensitization drum surface with the regional magnetic carbon powder of non-imaging, the regional magnetic carbon powder of imaging also receives the effect of magnetic field repulsion force, but only push away the regional magnetic carbon powder of imaging by magnetic field repulsion force alone, therefore we can clear away the regional magnetic carbon powder of remaining of non-imaging from the higher authority, the problem of end ash appears in having avoided printing.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
Referring to fig. 1, the utility model discloses a laser printer's sensitization drum structure, be equipped with iron core 2 in the sensitization drum 1, be equipped with main magnetic stripe 3 on this iron core 2, be equipped with the vice magnetic stripe 4 the same with 3 magnetism of main magnetic stripe on iron core 2, because must main magnetic stripe 3 and the magnetism of vice magnetic stripe 4 the same just can form a repulsion force to the magnetism carbon dust in the position between main magnetic stripe 3 and vice magnetic stripe 4, main magnetic stripe 3 and 4 contained angles of vice magnetic stripe are 5-15, preferred 7.
As shown in the figure, the iron core 2 is provided with a sleeve 5, the main magnetic stripe 3 and the auxiliary magnetic stripe 4 are both arranged on the sleeve 5, the main magnetic stripe 3 and the auxiliary magnetic stripe 4 are magnetized, the magnetism on the sleeve 5 is weak, and the distance from the surface of the photosensitive drum 1 is long, so that the sleeve 5 cannot influence printing. Because the magnetic stripe in the past is glue and glues on iron core 2 in the sensitization drum, but the in-process temperature of printing is than higher, therefore glue is ageing easily and leads to the magnetic stripe to drop, therefore we now adopt the mode of moulding plastics casing 5 and main magnetic stripe 3, vice magnetic stripe 4 on iron core 2, guarantee that the magnetic stripe can not drop.
The photosensitive drum structure of the laser printer provided by the embodiment of the present invention is introduced in detail, and the principle and the implementation of the present invention are explained by applying specific examples, and the description of the above embodiments is only used to help understanding 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 (2)
1. Laser printer's sensitization drum structure, be equipped with fixed iron core in the sensitization drum, be equipped with main magnetic stripe on this iron core, its characterized in that: the iron core is provided with auxiliary magnetic strips with the same magnetism as the main magnetic strips, and the included angle between the main magnetic strips and the auxiliary magnetic strips is 5-15 degrees.
2. The photosensitive drum structure of a laser printer according to claim 1, wherein: the iron core is provided with a sleeve, and the main magnetic strip and the auxiliary magnetic strip are both arranged on the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020450298.7U CN212364796U (en) | 2020-03-31 | 2020-03-31 | Photosensitive drum structure of laser printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020450298.7U CN212364796U (en) | 2020-03-31 | 2020-03-31 | Photosensitive drum structure of laser printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212364796U true CN212364796U (en) | 2021-01-15 |
Family
ID=74148963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020450298.7U Active CN212364796U (en) | 2020-03-31 | 2020-03-31 | Photosensitive drum structure of laser printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212364796U (en) |
-
2020
- 2020-03-31 CN CN202020450298.7U patent/CN212364796U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |