CN2919311Y - Developing box for electronic picture-taking and imaging device - Google Patents
Developing box for electronic picture-taking and imaging device Download PDFInfo
- Publication number
- CN2919311Y CN2919311Y CN 200620062167 CN200620062167U CN2919311Y CN 2919311 Y CN2919311 Y CN 2919311Y CN 200620062167 CN200620062167 CN 200620062167 CN 200620062167 U CN200620062167 U CN 200620062167U CN 2919311 Y CN2919311 Y CN 2919311Y
- Authority
- CN
- China
- Prior art keywords
- developer roll
- sliding bearing
- developing apparatus
- image forming
- forming apparatus
- 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 - Lifetime
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Abstract
The utility model relates to an electric photo developer device including a powder cabinet, a powder transportation roller and a developer roller. The two ends of the developer roller respectively support on the image processing frame via the sliding bearings. The lubrication agents are provided to the sliding bearings to keep lubrication. The surface of the sliding bearing has a groove to keep the contact with the end of the developer roller. The lubrication between the developer roller end and bearing is very good, which can keep and improve the rotation stability of the developer roller.
Description
Technical field
The utility model relates to for example developing apparatus of laser printer of electrophotographic image forming, particularly has the developing apparatus that is used to transmit the powder feeding roller of carbon dust and is used for electrostatic latent image is converted to the developer roll of visual image.
Background technology
Electrophotographic image forming, for example laser printer is the photosensitive drums that has predetermined potential by the laser scanning irradiation, forms electrostatic latent image on its surface.This electrostatic latent image is developed with predetermined carbon dust, and then will be transferred on the paper, the image fixing of transfer printing acquisition, become the visual image that naked eyes can be observed afterwards,---signal---conversion between the image that realizes image thus through the image that develops.
Common laser printer is provided with charging roller, photosensitive drums, laser scanning mechanism, developing apparatus, transfer roll and fixing roller etc. in its casing.
Photosensitive drums charges to predetermined potential by charging roller, and response is formed corresponding to the electrostatic latent image for the treatment of print image by laser scanning mechanism emitted laser bundle.
The container that developing apparatus is established within it for example stores carbon dust in the powder storehouse, and utilizes the powder feeding roller that places in the developing apparatus that carbon dust is delivered to developer roll.The suction-operated that developer roll then utilizes magnetic field forms the carbon dust layer that a layer thickness is determined on self roll surface, the carbon dust layer is sent to the photosensitive drums that has electrostatic latent image thereupon.
The visual image that forms on the photosensitive drums is transferred on the paper between photosensitive drums and the transfer roll by transfer roll, utilizes fixing roller that the carbon dust image on the paper is given photographic fixing at last.
Above-mentioned developing apparatus, utilize the powder storehouse to bear the storage task of carbon dust on the one hand, on the other hand, powder feeding roller and developer roll are arranged at a side of developing apparatus simultaneously, by the transmission between powder feeding roller and developer roll realization carbon dust transmission and carbon dust and the photosensitive drums, finish the conversion between photosensitive drums electrostatic latent image and the visual image.Developing apparatus comprises powder storehouse, powder feeding roller and developer roll on the whole.Can achieve a fixed connection by bearing pin and pin-and-hole between the graphics processing unit at itself and photosensitive drums place, and obtain the integral type laser printer processing box; Perhaps respectively as the individual components manufacturing, separate accumulating or sale, and fit assembling when installation, thus obtain split type laser printer processing box.
For example domestic application for a patent for invention CN200410076934.X disclosed " photosensitive element box ", its included developing apparatus can be carried out following mechanism.When the carbon dust in the stirrer rotation stirring powder storehouse and after it is flowed out in the powder storehouse, carbon dust is sent on the developer roll outer round surface by feeding roller.Scraper is used for limiting the lip-deep carbon dust layer thickness of developer roll.Be rotatably installed in the bearing held about the developer roll roll shaft by the little material of friction factor, make as contract an aromatic plant metioned in ancient books resin or similar material of second.Each bearing has an engagement nail that is meshed with ring groove, to guarantee that bearing can not come off from the end of roll shaft.Cardinal extremity one side of each bearing has the shaft diameter adjustment member of a umbrella, and its diameter little by little increases.Spring assembly pushes at least one bearing slidably outside side.Thereby when Delevoping cartridge was placed on the precalculated position with respect to photosensitive element box, the developer roll roll shaft just was supported on the gathering sill that is positioned on the sidewall of the photosensitive element box left and right sides.
Above-mentioned photosensitive element box, after Delevoping cartridge was packed the photosensitive drums assembly into, the bearing that is assemblied in developer roll roll shaft two ends was being brought into play the radial location effect, and simultaneously, the developer roll roll shaft can be done relative rotation in the developer roll axle sleeve when printing.For this reason, scribble lubricant medium between developer roll roll shaft and the bearing, as conductive paste, railway grease etc.
Continuity along with the time-write interval, lubricant medium between developer roll roll shaft and the bearing can be extruded because of roll shaft and relatively rotating of bearing, lubricant medium between roll shaft and bearing is disappeared totally, and then reduce the sliding friction property between roll shaft and bearing, cause print quality to descend.
The utility model content
The utility model purpose is to provide a kind of developing apparatus that is used for electrophotographic image forming, and this developing apparatus can keep good lubricating property between developer roll roll shaft and bearing.
According to the used for electronic photography image forming apparatus developing apparatus of above-mentioned purpose design, comprise by powder storehouse seat and surround powder storehouse, the powder feeding roller that can transmit carbon dust that forms and can adsorb carbon dust and it is passed to the developer roll of photosensitive drums place graphics processing unit.Two axle heads of developer roll are supported on removably respectively on the respective frame of graphics processing unit by sliding bearing.Two axle heads of developer roll have lubricant between the sliding bearing corresponding with it together and both are in the sliding contact relation.The inside surface with developer roll axle head maintenance sliding contact relation of sliding bearing is provided with cavity.
Above-mentioned, the used for electronic photography image forming apparatus developing apparatus, preferably its cavity quantity is at least two, and is distributed in independently of each other keeping on the inside surface of sliding contact relation with the developer roll axle head of sliding bearing.
Aforementioned, the used for electronic photography image forming apparatus developing apparatus, preferably its cavity is along axial perforation sliding bearing and inside surface developer roll axle head maintenance sliding contact relation of sliding bearing.
Optimally, above-mentioned used for electronic photography image forming apparatus developing apparatus, its cavity are to be distributed in the helicla flute that sliding bearing and developer roll axle head keep the rule on the inside surface of sliding contact relation.
According to qualifications, above-mentioned used for electronic photography image forming apparatus developing apparatus, its cavity are to be symmetrically distributed in sliding bearing and developer roll axle head to keep at least two straight shape grooves on the inside surface of sliding contact relation.
Used for electronic photography image forming apparatus developing apparatus of the present utility model, by on the inside surface of sliding bearing and developer roll axle head maintenance sliding contact relation, cavity being set, and then when sliding bearing and developer roll axle head are in the sliding contact state, make the lubricant medium between developer roll roll shaft and sliding bearing, as conductive paste, railway grease etc. when the extruding that is subjected to both, can enter aforementioned cavity, and can not be extruded into outside both sliding contact surfaces along the gap between developer roll roll shaft and the sliding bearing.Like this, can fully guarantee to possess between both sliding contact surface lubricant medium of q.s, concern thereby keep being in good sliding contact between sliding bearing and the developer roll axle head.
The drawing explanation
Fig. 1 the utility model used for electronic photography image forming apparatus developing device structure synoptic diagram.
The sliding bearing structure synoptic diagram one of Fig. 2 a the utility model used for electronic photography image forming apparatus developing apparatus.
The sliding bearing structure synoptic diagram two of Fig. 2 b the utility model used for electronic photography image forming apparatus developing apparatus.
The sliding bearing cut-open view of Fig. 2 c the utility model used for electronic photography image forming apparatus developing apparatus.
The developer roll axle head of Fig. 3 the utility model used for electronic photography image forming apparatus developing apparatus is with sliding bearing assembly structure cut-open view.
Embodiment
Referring to Fig. 1,2a, 2b, 2c, 3, the utility model used for electronic photography image forming apparatus developing apparatus.
Among Fig. 1, this developing apparatus comprises airtight powder storehouse 1, powder feeding roller and the developer roll 2 that is formed by the encirclement of powder storehouse seat.1 inside, powder storehouse has the cavity that can store carbon dust.Powder feeding roller is positioned at powder storehouse 1 inner (not shown), and two axle head is supported on respectively on two opposed bulkheads 101,102 of powder storehouse seat, and it can be sent to developer roll 2 to the carbon dust of 1 inside, powder storehouse.Developer roll 2 is arranged in the meal outlet in powder storehouse 1, and its axis is parallel to powder feeding roller, and two axle head is supported on respectively on two opposed bulkheads 101,102 of powder storehouse seat.The axial outermost end of these two axle heads is along being inlaid with sliding bearing 201,202 respectively simultaneously.All have lubricant such as conductive paste or railway grease etc. between these two axle heads and the sliding bearing 201,202, and keep the sliding contact state respectively accordingly.Under assembled state, two axle heads of developer roll 2 are supported on (not shown) on the respective frame of graphics processing unit removably respectively by sliding bearing 201,202.Wherein, graphics processing unit is to include photosensitive drums and useless powder holds the separate unit in storehouse.After the utility model developing apparatus is assembled to graphics processing unit inside, the nested sliding bearing 201,202 of two axle heads of developer roll 2 promptly is supported on the respective frame of graphics processing unit, developer roll 2 axis are parallel with the photosensitive drums axis, and retain trickle gap between both cylindrical outer surfaces, and then developing apparatus and graphics processing unit are combined a complete laser printer processing box.
Referring to Fig. 2 a, 2b, 2c, in the utility model developing apparatus with one of supporting sliding bearing of developer roll 2 201.Be distributed with on the inner cylinder face of sliding bearing 201 relatively and its axis is six linearity grooves 2011 of symmetrical distribution.Groove 2011 is along the inner cylinder face of the axial perforation sliding bearing 201 of sliding bearing 201.Sliding bearing 201 axial ends are formed with the recess 2012 of two symmetries.Under confined state, recess 2012 is connected on the complementary protuberance of bulkhead 101, makes sliding bearing 201 obtain the location of circumferencial direction.Similar with the structure of sliding bearing 201, sliding bearing 202 has corresponding or identical construction.
Adopt above-mentioned inner cylinder face to be provided with after the make of linearity perforation groove 2011 at sliding bearing 201, axle head and corresponding sliding bearing 201 at developer roll 2 are in contact with one another in the process of extruding, the bigger lubricant medium of viscosity that is arranged between the two can remain in groove 2011 preferably, for both provide good lubrication.Another axle head of developer roll 2 has same effect.Yet except aforementioned linearity connects the make of groove 2011, can also adopt two ends by shutoff and non-through linearity groove, the perhaps helicla flute that itself connects, perhaps two ends are by shutoff and non-through helicla flute, or are distributed in the cavity of the several independent on the sliding bearing inner cylinder face.
Referring to Fig. 2 c, 3, the developer roll axle head of the utility model developing apparatus is with the sliding bearing assembly structure.The axial outer end of developer roll 2 axis is inserted cylindrical cavity in the sliding bearing 201, lubricant medium such as conductive paste or railway grease etc. are under the extruding of developer roll 2 axle heads and sliding bearing 201 inner cylinder faces, part is retained between both surface of contact, and part then flows into linearity and connects in the groove 2011.
Claims (5)
1. used for electronic photography image forming apparatus developing apparatus, comprise by powder storehouse seat and surround the powder storehouse that forms, can transmit carbon dust powder feeding roller and can adsorb carbon dust and it is passed to the developer roll of photosensitive drums place graphics processing unit, two axle heads of described developer roll are supported on the respective frame of described graphics processing unit removably respectively by sliding bearing, two axle heads of described developer roll have lubricant between the sliding bearing corresponding with it together and both are in the sliding contact relation, it is characterized in that described sliding bearing and described developer roll axle head keep the inside surface of sliding contact relation to be provided with cavity.
2. used for electronic photography image forming apparatus developing apparatus according to claim 1 is characterized in that described cavity quantity is at least two, and is distributed in the inside surface of described sliding bearing and described developer roll axle head maintenance sliding contact relation independently of each other.
3. used for electronic photography image forming apparatus developing apparatus according to claim 1 is characterized in that the axial perforation of described cavity along described sliding bearing.
4. used for electronic photography image forming apparatus developing apparatus according to claim 3 is characterized in that described cavity is to be distributed in the helicla flute that described sliding bearing and described developer roll axle head keep the rule on the inside surface of sliding contact relation.
5. used for electronic photography image forming apparatus developing apparatus according to claim 3 is characterized in that described cavity is to be symmetrically distributed in described sliding bearing and described developer roll axle head to keep at least two straight shape grooves on the inside surface of sliding contact relation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620062167 CN2919311Y (en) | 2006-07-22 | 2006-07-22 | Developing box for electronic picture-taking and imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620062167 CN2919311Y (en) | 2006-07-22 | 2006-07-22 | Developing box for electronic picture-taking and imaging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2919311Y true CN2919311Y (en) | 2007-07-04 |
Family
ID=38217128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620062167 Expired - Lifetime CN2919311Y (en) | 2006-07-22 | 2006-07-22 | Developing box for electronic picture-taking and imaging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2919311Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609286B (en) * | 2008-06-19 | 2012-01-11 | 京瓷美达株式会社 | Bearing structure, toner storage device and image forming apparatus provided with the bearing structure |
-
2006
- 2006-07-22 CN CN 200620062167 patent/CN2919311Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609286B (en) * | 2008-06-19 | 2012-01-11 | 京瓷美达株式会社 | Bearing structure, toner storage device and image forming apparatus provided with the bearing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070704 |
|
| EXPY | Termination of patent right or utility model |