CN202102245U - Photosensitive drum with magnetic pole - Google Patents
Photosensitive drum with magnetic pole Download PDFInfo
- Publication number
- CN202102245U CN202102245U CN2011202105014U CN201120210501U CN202102245U CN 202102245 U CN202102245 U CN 202102245U CN 2011202105014 U CN2011202105014 U CN 2011202105014U CN 201120210501 U CN201120210501 U CN 201120210501U CN 202102245 U CN202102245 U CN 202102245U
- Authority
- CN
- China
- Prior art keywords
- photosensitive drum
- permanent magnet
- utility
- model
- magnetic pole
- 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.)
- Expired - Fee Related
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- Magnetic Brush Developing In Electrophotography (AREA)
Abstract
The utility model discloses a photosensitive drum with a magnetic pole. The photosensitive drum comprises an aluminum tube and a support shaft pivoted in the aluminum tube, and is characterized in that at least one permanent magnet is arranged on the support shaft. In the utility model, as the at least one permanent magnet is arranged in the photosensitive drum, magnetic carbon powder adhered to the surface of a developing roller can be attracted and adhered to the surface of the photosensitive drum through the permanent magnet to achieve development, so that abrasion and large rotating torque which are caused by mutual contact between the photosensitive drum and the developing roller are avoided, meanwhile, the manufacturing accuracy of related components is lowered. Accordingly, the production cost is reduced and the printing quality is improved.
Description
Technical field
The utility model relates to a kind of laser printer, particularly a kind of photosensitive drums with magnetic pole.
Background technology
The contact visualization way is wherein a kind of main visualization way of laser printing.Laser printer such as Samsung and brother has adopted this visualization way mostly, and color printers such as Hewlett-Packard, Canon have also adopted this kind technology.
With the Samsung is example, and a bigger powder storehouse is arranged usually, interiorly continuously flows to powder feeding roller to carbon dust with puddle support, because developer roll must lean on the continuous turning handle carbon dust of powder feeding roller to deliver to above it.Therefore powder feeding roller is many with there being the porosint of certain resistance to make.When the voltage of giving powder feeding roller with pact-500v, can make carbon dust generate electronegativity.Mostly developer roll is metal-cored rubber roll, and very big bulk resistor is arranged, to its impose-during the voltage of 300v, supply the charged toner on the powder roller will transfer on the high developer roll of relative current potential.Elastic metallic scraper and developer roll keep minimum gap, and it is also imposed an alternating voltage, can constantly make the carbon dust activation and it is spread to very thin one deck uniformly in the concussion.And photosensitive drums can obtain under charging roller-1400V high pressure effect-surface voltage of 800V; Exposure back visuals current potential is reduced to – 50V (this is a rest potential); But not visuals (white area) Bao Chi – 800V current potential still; The ink powder Bei – 800V of Yue – 300V repels Shang the developer roll, but can be attracted and video picture by-50V, and this is a developing process.This visualization way requires photosensitive drums directly to contact with developer roll, and bigger to the damage of photosensitive drums, driving torque is also big, and each parts accuracy requirement height causes cost of manufacture high simultaneously, and print quality is also unstable.
Summary of the invention
In order to overcome the deficiency of prior art, the utility model provides a kind of photosensitive drums that attracts the magnetic carbon dust to develop through permanent magnet, and this photosensitive drums has been avoided and the developer roll friction, thereby can reduce manufacturing cost, the raising print quality of associated components.
The utility model solves the technical scheme that its technical matters adopted:
A kind of photosensitive drums with magnetic pole comprises aluminum pipe and is hubbed at the back shaft in the aluminum pipe that it is characterized in that: said back shaft is provided with at least one permanent magnet.
Said permanent magnet passes through adhesive securement on back shaft.
The beneficial effect of the utility model is: be provided with at least one permanent magnet in the photosensitive drums of the utility model; Can attract be attached to photosensitive drum surface through permanent magnet attached to the surperficial magnetic carbon dust of developer roll realizes developing; Wearing and tearing of having avoided photosensitive drums and developer roll to be in contact with one another being brought and big driving torque; Reduce the manufacturing accuracy of associated components simultaneously, thereby also reduced cost of manufacture, improved print quality.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified:
Fig. 1 is the sectional view of the utility model.
Embodiment
With reference to Fig. 1, the utility model discloses a kind of photosensitive drums with magnetic pole, comprise aluminum pipe 1 and be hubbed at the back shaft 2 in the aluminum pipe 1 that said back shaft 2 is provided with at least one permanent magnet 3.
As shown in the figure, in this specific embodiment, be provided with a permanent magnet 3 in the photosensitive drums; And permanent magnet 3 passes through adhesive securement on back shaft 2; This permanent magnet 3 be positioned at photosensitive drums under, above-mentioned position only is an optimum position of present embodiment, this permanent magnet 3 also can be positioned at other position that photosensitive drums can attract the magnetic carbon dust certainly; Adopting glue also is a kind of optimal way of the utility model; Certainly, the utility model also can adopt alternate manner that permanent magnet 3 is fixed on the back shaft 2, as passing through screw retention or clamping etc.
Above-mentionedly just some preferred embodiments of the utility model are illustrated and describe; But the embodiment of the utility model is not restricted to the described embodiments; As long as it reaches the technique effect of the utility model with essentially identical means, all should belong to the protection domain of the utility model.
Claims (2)
1. the photosensitive drums with magnetic pole comprises aluminum pipe and is hubbed at the back shaft in the aluminum pipe, and it is characterized in that: said back shaft is provided with at least one permanent magnet.
2. a kind of photosensitive drums with magnetic pole according to claim 1 is characterized in that: said permanent magnet passes through adhesive securement on back shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202105014U CN202102245U (en) | 2011-06-21 | 2011-06-21 | Photosensitive drum with magnetic pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202105014U CN202102245U (en) | 2011-06-21 | 2011-06-21 | Photosensitive drum with magnetic pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202102245U true CN202102245U (en) | 2012-01-04 |
Family
ID=45388249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202105014U Expired - Fee Related CN202102245U (en) | 2011-06-21 | 2011-06-21 | Photosensitive drum with magnetic pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202102245U (en) |
-
2011
- 2011-06-21 CN CN2011202105014U patent/CN202102245U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20140621 |
|
| EXPY | Termination of patent right or utility model |