CN202275267U - A side cover structure of a laser printer - Google Patents
A side cover structure of a laser printer Download PDFInfo
- Publication number
- CN202275267U CN202275267U CN2011203385582U CN201120338558U CN202275267U CN 202275267 U CN202275267 U CN 202275267U CN 2011203385582 U CN2011203385582 U CN 2011203385582U CN 201120338558 U CN201120338558 U CN 201120338558U CN 202275267 U CN202275267 U CN 202275267U
- Authority
- CN
- China
- Prior art keywords
- developer roll
- mounting hole
- laser printer
- draw
- groove
- 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
- 230000000694 effects Effects 0.000 abstract description 6
- 238000007639 printing Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 4
- 206010070834 Sensitisation Diseases 0.000 abstract 3
- 230000008313 sensitization Effects 0.000 abstract 3
- 230000001595 contractor effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- 239000000428 dust Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000000843 powder Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
The utility model discloses a side end cover structure of a laser printer, which comprises a photosensitive drum mounting hole and a developing roller mounting hole, wherein the hole wall of the developing roller mounting hole is provided with a plurality of longitudinally arranged clamping grooves, and an eccentric shaft sleeve with a circular through hole is clamped through the clamping grooves; the eccentric bushing is provided with a connecting key matched with the clamping groove. The utility model discloses mainly bring the problem of printing the quality badly for laser printer to the cold contraction effect of sensitization drum and developer roll to low temperature weather, add in the developer roll mounting hole and establish eccentric sleeve, make its installation developer roll after, thereby can adjust the centre-to-centre spacing of position adjustment sensitization drum and developer roll through adjusting eccentric sleeve, the surface that makes sensitization drum and developer roll all the time forms the best contact effect, the effectual printing quality problem of bringing for laser printer because of low temperature weather of having eliminated.
Description
Technical field
The utility model relates generally to laser printer, especially a kind of side end cap structure of laser printer.
Background technology
The physical construction of laser printer is very complicated, and major part has carbon dust, photosensitive drums (or claiming toner cartridge), developer roll, high-voltage corona discharge line etc., all is contained in the box that can take off.Laser printer, digital copier etc. are processed according to laser scanner technique and electronic imaging principle, and a very important components is wherein arranged, and that is exactly a photosensitive drums.
The printer process for imaging is divided into six steps substantially down: charging, exposure, development, transfer printing, photographic fixing and cleaning.Wherein developing process is meant " electrostatic latent image " that forms the optical conductor surface, demonstrates ink powder image through " development ", and this process is referred to as " electronics development ".Development work is to be accomplished by developer roll, and its effect is that electrostatic latent image is become visual picture.Development is to utilize the principle that the electric charge same sex is repelled each other between material, there is a natural attraction between the sexes to accomplish.
Iron powder and carbon dust are housed in the developer, the iron powder positively charged through friction back, carbon dust is electronegative, and iron powder is surrounded by carbon dust and the iron powder that adsorbed carbon dust is adsorbed by permanent magnet like this, and formation is similar to one deck iron powder and toner mixture like the hairbrush.When photosensitive drum surface under this layer magnetic brush through out-of-date, the carbon ink powder is drawn onto the part that photosensitive drum surface is still keeping positive electricity because of electronegative, has formed visible carbon dust image.When developer roll and the contacted many or very few quality of printing that all will influence of photosensitive drum surface.Contactedly many make the too much carbon ink powder of photosensitive drums absorption easily, thereby cause printing dark, even the phenomenon of deceiving entirely occurs printing; Otherwise at least contacted, be prone to cause print and turn white or print problem such as beat.
Hence one can see that; Can work normally for guaranteeing printer; The surface spacing of developer roll and photosensitive drums must obtain strict control, and developer roll and photosensitive drums are cylindrical usually, and the surface spacing of therefore controlling developer roll and photosensitive drums can transfer the centre distance of controlling the two to.
After present laser printer is on the market installed, the normally fixing a certain fixed value of the centre distance of developer roll and photosensitive drums.But when weather conditions are abominable, particularly microthermal climate owing to the shrinkage of developer roll and photosensitive drums, will cause the centre distance of the two to become big, thereby produce bad printing effect.
The utility model content
In order to overcome the deficiency of prior art, the utility model provides a kind of side end cap structure of adjusting the laser printer of developer roll and photosensitive drums.
The utility model solves the technical scheme that its technical matters adopted:
A kind of side end cap structure of laser printer comprises photosensitive drums mounting hole and developer roll mounting hole, and the hole wall of said developer roll mounting hole is provided with the draw-in groove of some vertical settings, and is installed with the excentric sleeve of band manhole through above-mentioned draw-in groove; Said excentric sleeve is provided with the connecting key that cooperates with draw-in groove.
As the improvement of technique scheme, for making in the installation and developer roll mounting hole that excentric sleeve can be firm, the draw-in groove of said developer roll mounting hole is six equally distributed rectangular channels.
As the further improvement of technique scheme, for making things convenient for the installation of developer roll, the end face of said developer roll mounting hole is equipped with Digital ID around the periphery of draw-in groove to each draw-in groove.
The beneficial effect of the utility model is: the utility model is primarily aimed at microthermal climate the shrinkage effect of photosensitive drums and developer roll is brought the bad problem of print quality to laser printer; In the developer roll mounting hole, add excentric sleeve; It is installed after the developer roll; Thereby can be through the clamping position adjustment photosensitive drums of adjustment excentric sleeve and the centre distance of developer roll; All the time make photosensitive drums and developing roller surface form the best effect that contacts, effectively eliminated the print quality problem of bringing to laser printer because of microthermal climate.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified:
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is the structural representation after Fig. 1 removes excentric sleeve;
Fig. 3 is the structural representation of excentric sleeve.
Embodiment
With reference to Fig. 1～Fig. 3; A kind of side end cap structure of laser printer; Comprise photosensitive drums mounting hole 1 and developer roll mounting hole 2; The hole wall of said developer roll mounting hole 2 is provided with the draw-in groove 21 of some vertical settings, and is installed with the excentric sleeve 3 of being with manhole 31 through above-mentioned draw-in groove 21, and the characteristics of excentric sleeve 3 are that there is certain offset distance in the central shaft of outer cylinder and inner cylinder; Said excentric sleeve 3 is provided with the connecting key 32 that cooperates with draw-in groove 21.
As the preferred implementation of technique scheme, the draw-in groove 21 of said developer roll mounting hole 2 is six equally distributed rectangular channels.
As the improvement of technique scheme, for making things convenient for the installation of developer roll 2, the end face of said developer roll mounting hole 2 is equipped with Digital ID around the periphery of draw-in groove 21 to each draw-in groove 21, and present embodiment adopts arabic numeral 1～6 to identify.
Certainly, the utility model is not limited to above-mentioned embodiment, 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 side end cap structure of a laser printer; Comprise photosensitive drums mounting hole (1) and developer roll mounting hole (2); It is characterized in that: the hole wall of said developer roll mounting hole (2) is provided with the draw-in groove (21) of some vertical settings, and is installed with the excentric sleeve (3) of band manhole (31) through above-mentioned draw-in groove (21); Said excentric sleeve (3) is provided with the connecting key (32) that cooperates with draw-in groove (21).
2. the side end cap structure of a kind of laser printer according to claim 1; It is characterized in that: the draw-in groove (21) of said developer roll mounting hole (2) is six equally distributed rectangular channels, and the end face in hole is equipped with Digital ID around the periphery of draw-in groove (21) to each draw-in groove (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203385582U CN202275267U (en) | 2011-09-09 | 2011-09-09 | A side cover structure of a laser printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203385582U CN202275267U (en) | 2011-09-09 | 2011-09-09 | A side cover structure of a laser printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202275267U true CN202275267U (en) | 2012-06-13 |
Family
ID=46195613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203385582U Expired - Fee Related CN202275267U (en) | 2011-09-09 | 2011-09-09 | A side cover structure of a laser printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202275267U (en) |
-
2011
- 2011-09-09 CN CN2011203385582U patent/CN202275267U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20120909 |