CN202494866U - Powder control mechanism for selenium drum - Google Patents
Powder control mechanism for selenium drum Download PDFInfo
- Publication number
- CN202494866U CN202494866U CN2011205346968U CN201120534696U CN202494866U CN 202494866 U CN202494866 U CN 202494866U CN 2011205346968 U CN2011205346968 U CN 2011205346968U CN 201120534696 U CN201120534696 U CN 201120534696U CN 202494866 U CN202494866 U CN 202494866U
- Authority
- CN
- China
- Prior art keywords
- powder
- developer roll
- control powder
- cutter
- powder control
- 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
Links
- 239000000843 powder Substances 0.000 title claims abstract description 67
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title abstract 3
- 229910052711 selenium Inorganic materials 0.000 title abstract 3
- 239000011669 selenium Substances 0.000 title abstract 3
- 229920001971 elastomer Polymers 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 230000002950 deficient Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
Images
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
The utility model relates to the technical fields of laser printer and copier accessory and in particular relates to a powder control mechanism for a selenium drum in the laser printer. The powder control mechanism for the selenium drum comprises a powder control knife, wherein the powder control knife is composed of a mounting part and a working part, the free end of the working part is contacted with a developing roller, and one side of the working part of the powder control knife is provided with an elastic element. The powder control mechanism disclosed by the utility model overcomes the defects of the prior art, can maintain powder discharging uniformity and thickness uniformity for a long time, has a simple structure and is easy to realize.
Description
Technical field
The utility model relates to laser printer, duplicating machine accessory technical field, specifically, relates to a kind of toner cartridge control powder mechanism that is used for laser printer.
Background technology
The groundwork principle of printer of the prior art, duplicating machine is:
Image of waiting to print or duplicate or literal are formed electrostatic latent image on the surface of photosensitive drums; With developer this electrostatic latent image is developed then; Promptly fill uniform developer in the zone that image or literal are arranged; At last, will pass through image that developer fills or words transfer printing to medium, get final product through photographic fixing again.
Developing apparatus of the prior art adopts developer roll more; It is the magnetic roller; The magnetic roller is made up of magnetic core and the sleeve that is sleeved on the magnetic core outside, and during work, ink powder is adsorbed on sleeve surface owing to receive the effect of magnetic field force; And along with controlling the rotation of powder device and forming certain thickness ink powder in sleeve surface, ink powder moves to the electrostatic latent image zone of photosensitive drums then.Developers such as ink powder with directly influencing the picture quality that forms on the photosensitive drums, finally influence printing effect in the thickness and the uniformity coefficient on developer roll surface.
Therefore, need to use control powder mechanism to come powder outlet quantity is carried out in good time adjusting, guarantee as much as possible that promptly the thickness of powder delivery is consistent with uniformity coefficient.
Control powder mechanism contacts the uniformity coefficient that guarantees powder delivery through the powder delivery cutter with the magnetic roller, but As time goes on, powder delivery cutter and magnetic roller all have certain wearing and tearing, and the uniformity coefficient of powder delivery and thickness also can be affected.
The utility model patent of ZL201020572935.4 discloses " a kind of control powder device that is used for the laser printer toner cartridge "; This utility model is through being provided with spongy elastic body on knife rest; And coat the mode of film on spongy elastomeric surface, powder delivery is regulated.This utility model patent comes the mismachining tolerance or the rigging error of knife rest, spongy elastic body itself are compensated through utilizing spongy elastomeric elastic deformation, compared to prior art, improves to a certain extent really.
But still there is certain defective in above-mentioned patent, and film and spongy elastic body itself that promptly spongy surface of elastomer coats still can wear and tear, thereby influence the homogeneity of later stage powder delivery and the consistance of thickness.
Therefore,, adapt to the needs of reality, be necessary to design a kind of novel control powder mechanism, be intended to keep for a long time the homogeneity of powder delivery and the consistance of thickness in order to overcome the deficiency of prior art.
The utility model content
The purpose of the utility model is to overcome the deficiency of prior art, adapts to the needs of reality, and a kind of toner cartridge control powder mechanism is provided.
In order to realize the purpose of the utility model, the technical scheme that the utility model adopts is:
A kind of toner cartridge control powder mechanism comprises control powder cutter, and said control powder cutter is made up of installation portion and operate portions, and the free end of said operate portions contacts with developer roll, and a side of said control powder cutter operate portions is provided with elastic component.
Said elastic component is spring or torsion spring.
The assembly of being made up of said control powder cutter and elastic component comprises two groups, and two groups of assemblies lay respectively at the above and below of developer roll, and two groups of assemblies are symmetrical about the axis of developer roll.
The said free end that is positioned at the control powder cutter of developer roll top is a metalwork with the contact site of developer roll, saidly is positioned at the free end of the control powder cutter below the developer roll and the contact site of developer roll is a rubber parts.
The free end of said control powder cutter operate portions is rounded down.
The beneficial effect of the utility model is:
1. overcome the defective of prior art, the homogeneity of maintenance powder delivery that can be permanent and the consistance of thickness; And
2. simple in structure, realize easily.
Description of drawings
Fig. 1 is one of use principle figure of the utility model; And
Fig. 2 be the utility model use principle figure two.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified:
Embodiment one: referring to Fig. 1.
A kind of toner cartridge control powder mechanism comprises control powder cutter 1, and said control powder cutter is made up of installation portion 11 and operate portions 12, and the free end of said operate portions 12 contacts with developer roll 2, and a side of said control powder cutter operate portions 12 is provided with elastic component.
Said elastic component is spring or torsion spring, and in the present embodiment, elastic component is a spring 3.
The utility model adopts the spring in operate portions 12 1 sides of control powder cutter 1 to come the contact pressure between control powder cutter and the magnetic roller is controlled, and the homogeneity of maintenance powder delivery that can be permanent and the consistance of thickness.
What expect easily is that spring 3 can be replaced by torsion spring, realizes essentially identical function.
Among the figure, 4 is powder feeding roller, and 5 is photosensitive drums.Ink powder is transported to the surface of developer roll 2 under the rolling of powder feeding roller 4, ink powder has certain static then, under the effect of electric field force, moves to the surface of photosensitive drums 5, thereby the electrostatic latent image on the photosensitive drums 5 is developed.The rotation direction of powder feeding roller 4, developer roll 2, photosensitive drums 5 is as shown in the figure.
Embodiment two: referring to Fig. 2.
Present embodiment and embodiment one are basic identical, and its something in common is not given unnecessary details, and difference only is, in the present embodiment, said control powder cutter 1 and spring 3 comprise two groups and be symmetrically set in the upper and lower of developer roll 2.
The said free end that is positioned at the control powder cutter of developer roll top is a metalwork with the contact site of developer roll, saidly is positioned at the free end of the control powder cutter below the developer roll and the contact site of developer roll is a rubber parts.The structural design of double-pole adopts the mutual supplement with each other's advantages of metal blade and elastomer blade, has both overcome metal blade shortcoming easy to wear, has overcome elastomer blade and the not high defective of carbon dust frictional electrification property simultaneously again.
The free end of said control powder cutter operate portions 12 is rounded down, and the structural design of fillet mainly is in order to reduce the wearing and tearing of control powder cutter operate portions 12.
What the embodiment of the utility model announced is preferred embodiment; But be not limited thereto, those of ordinary skill in the art is very easily according to the foregoing description; Understand the spirit of the utility model; And make different amplifications and variation, but only otherwise break away from the spirit of the utility model, all in the protection domain of the utility model.
Claims (5)
1. a toner cartridge control powder mechanism comprises control powder cutter, and said control powder cutter is made up of installation portion and operate portions, and the free end of said operate portions contacts with developer roll, it is characterized in that: a side of said control powder cutter operate portions is provided with elastic component.
2. toner cartridge control powder according to claim 1 mechanism, it is characterized in that: said elastic component is spring or torsion spring.
3. according to claim 1 or the described toner cartridge control of claim 2 powder mechanism; It is characterized in that: the assembly of being made up of said control powder cutter and elastic component comprises two groups; Two groups of assemblies lay respectively at the above and below of developer roll, and two groups of assemblies are symmetrical about the axis of developer roll.
4. toner cartridge control powder according to claim 3 mechanism; It is characterized in that: the said free end that is positioned at the control powder cutter of developer roll top is a metalwork with the contact site of developer roll, saidly is positioned at the free end of the control powder cutter below the developer roll and the contact site of developer roll is a rubber parts.
5. according to claim 1 or the described toner cartridge control of claim 2 powder mechanism, it is characterized in that: the free end of said control powder cutter operate portions is rounded down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205346968U CN202494866U (en) | 2011-12-20 | 2011-12-20 | Powder control mechanism for selenium drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205346968U CN202494866U (en) | 2011-12-20 | 2011-12-20 | Powder control mechanism for selenium drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202494866U true CN202494866U (en) | 2012-10-17 |
Family
ID=47001086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205346968U Expired - Fee Related CN202494866U (en) | 2011-12-20 | 2011-12-20 | Powder control mechanism for selenium drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202494866U (en) |
-
2011
- 2011-12-20 CN CN2011205346968U patent/CN202494866U/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: 20121017 Termination date: 20141220 |
|
| EXPY | Termination of patent right or utility model |