CN102141769A - Processing box for laser printer - Google Patents
Processing box for laser printer Download PDFInfo
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- CN102141769A CN102141769A CN 201110098461 CN201110098461A CN102141769A CN 102141769 A CN102141769 A CN 102141769A CN 201110098461 CN201110098461 CN 201110098461 CN 201110098461 A CN201110098461 A CN 201110098461A CN 102141769 A CN102141769 A CN 102141769A
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- developer roll
- laser printer
- carbon dust
- handle box
- powder delivery
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Abstract
The invention discloses a processing box for a laser printer, which comprises a photosensitive drum for forming an electrostatic latent image, a development roller for conveying a development agent to the surface of the photosensitive drum, and a powder outlet knife for adjusting the thickness of a carbon powder layer on the surface of the development roller. The sliding friction coefficient of the mutually contacted parts of the development roller and the powder outlet knife is kept at 0.1 to 2.0. The processing box can effectively avoid flying and deposition of carbon powder due to insufficient electric quantity or over low electric quantity and avoid environmental pollution or avoid affecting the printing quality.
Description
Technical field
The present invention relates to the laser printer handle box, particularly include the laser printer handle box of photosensitive drums, powder delivery cutter, developer roll.
Background technology
With handle box 100 is that the imaging process of the laser printer of basic comprising core is, sees Fig. 1, is charged equably by charging roller 102 in photosensitive drums 101 surfaces.Laser scanner 103 contains image information and through the laser beam 104 of ovennodulation to photosensitive drums 101 emission, cylindrical surface in photosensitive drums 101 after laser beam 104 irradiations forms the static charge distribution plan that its distribution has difference, that is the electrostatic latent image corresponding with image to be duplicated.Afterwards, the carbon dust 106 that autography roller 105 transmits is under the state of regulating bed thickness through powder delivery cutter 113 then be adsorbed on the cylindrical surface of photosensitive drums 101, and after aforementioned electrostatic latent image was covered, it is converted to can macroscopic visual image.Along with the rotation of photosensitive drums 101, the visual image that is formed at photosensitive drum surface by carbon dust 106 replaces to the position at transfer roll 107 places.Effect through the entrained transfer voltage of transfer roll 107, the carbon dust of visual image form is transferred on the surface of recording mediums 108 such as paper, with after after the carbon dust of the visual image form on 112 pairs of recording mediums 108 of warm-up mill 111 and backer roll carries out heating and pressurizing, carbon dust is penetrated in the fibrage of recording medium 108, and the visual image that carbon dust is formed for good and all solidifies on recording medium 108.Visual image on the aforementioned photosensitive drums 101 is after being transferred roller 107 transfer printings, residual carbon dust 109 attached to it is struck off to useless powder collecting bin by useless powder scraping blade 110, and photosensitive drums 101 surfaces return to after respective pins electricity equipment is eliminated static does not have the dustless stand-by state of electricity.So just finished a basic imaging workflow.This flow process is the result of cycle operation repeatedly, just can obtain the needed image of printing person.
Aforementioned imaging workflow can be summed up as following working link simply: charging, exposure, development, transfer printing, photographic fixing.In the charging link, by charging device, corona discharge mode charging roller 102 for example is to the surface of light activated element such as the photosensitive drums 101 predetermined electric charge of filling equably; In the exposure link, optionally exposure is carried out on photosensitive drums 101 surfaces that carry even predetermined charge, because the light sensitive characteristic on photosensitive drums 101 surfaces, to be grounded elimination by the electric charge of exposure region, like this, will form the electrostatic latent image that distribution characterized that forms image corresponding to institute's desire on photosensitive drums 101 surfaces after the exposure by electric charge; In the development link, by developing apparatus, for example developer roll 105, the developer that is used to form visual image, as the carbon dust of particle diameter 5～8 μ m, the electrostatic latent image district on photosensitive drums 101 surfaces is delivered in the effect of mating reaction power such as electric field force, and it is visual to make that above-mentioned electrostatic latent image obtains; In the transfer printing link,,, the developer on the electrostatic latent image on photosensitive drums 101 surfaces is transferred to as on carrying of the image of paper and so on or the recording medium 108 as transfer roll 107 by transfer device; In the photographic fixing link, by fixing device, for example warm-up mill 111 and backer roll 112 are fixed in the developer of transferring on the image bearing medium on the image bearing medium 108 firmly.
In above-mentioned imaging workflow, its development link is the committed step that electrostatic latent image is converted into visual image.In this link, developer roll 105 obtains carbon dust 106 from the powder storehouse of handle box 100, makes carbon dust 106 form predetermined bed thickness on developer roll 105 after regulating through the friction of powder delivery cutter 113, and carries predetermined electrostatic charge quantity.Yet, since between developer roll 105 and the powder delivery cutter 113 friction, capability a little less than, can produce part carbon dust 106 carried charge deficiencies or the low excessively phenomenon of carried charge usually.In this state, when carbon dust 106 is transferred between developer roll 105 and photosensitive drums 101, the low excessively carbon dust 106 of carried charge deficiency or carried charge is because of being subjected to photosensitive drums 101 surface electrostatic sub-images and the reciprocal each other effect of two electric field forces of the developer roll 105 development bias voltage of giving birth to simultaneously, causes this part carbon dust 106 to be in suspended state and can not be transported on the photosensitive drums 101.Under the situation that aforementioned two electric field equilibrium of forces are broken, owing to the superfine reason of carbon dust 106 particle diameters, the carbon dust 106 that these carried charge deficiencies or carried charge are low excessively will descend slowly and lightly to the outside of developer roll 105 and photosensitive drums 101, perhaps fly in the inner space of laser printer, perhaps be deposited on the surface of handle box 100 internals, perhaps be deposited on the inside of laser printer, cause the slight pollution working environment, even cause the gloomy consequence of the printing contribution page.
Summary of the invention
Because of carbon dust wafts, deposits the problem that influences clean environment and printing effect, the object of the invention is to provide a kind of laser printer handle box at above-mentioned.This handle box can stop effectively carbon dust because of carried charge deficiency or carried charge cross low occur waft, depositional phenomenon.
In order to reach the foregoing invention purpose, the laser printer handle box that the present invention adopts, comprise the photosensitive drums that is used to form electrostatic latent image, developer be sent to photosensitive drum surface developer roll, be used to regulate the powder delivery cutter of developer roll surface carbon powder layer thickness.At the position that they are in contact with one another, be filled with under the state of carbon dust layer between developer roll and powder delivery cutter between developer roll and the powder delivery cutter, keeping the mutual coefficient of sliding friction is 0.1～2.0.。
Aforementioned laser printer handle box, its coefficient of sliding friction are 1.0～2.0.
Laser printer handle box of the present invention, because of its carbon dust occurs wafting, depositional phenomenon influences clean environment and the problem of printing effect, the coefficient of sliding friction between developer roll and the powder delivery cutter is set at 0.1～2.0 at existing handle box the process that is transported to photosensitive drum surface from developer roll.The coefficient of sliding friction is meant between developer roll and the powder delivery cutter friction factor when the portion that they are in contact with one another is positioned at that developer roll keeps sliding mode or powder delivery cutter to keep sliding mode with respect to developer roll with respect to the powder delivery cutter under the state that is filled with the carbon dust layer between developer roll and the powder delivery cutter.Under the Frotteurism that this coefficient of sliding friction limits, when carbon dust moves with respect to the powder delivery cutter with extruded state between developer roll and powder delivery cutter, it will bear bigger friction force, thus obtain because of friction produce than the more static charge of existing handle box configuration state.Under this structural regime, existing handle box will be overcome because of carbon dust can not obtain enough static charge amounts of carrying when mobile between its developer roll and powder delivery cutter drawback, thereby guarantee that the carbon dust that is adsorbed in the developer roll surface is pushing through the powder delivery cutter, after regulating, friction both obtained the bed thickness be scheduled to, obtain enough static charge amounts of carrying again, and then the carbon dust that makes the developer roll surface under the electrostatic field of photosensitive drums is subjected to bigger electrostatic attraction, thereby finish of the transfer of carbon dust autography roller surface to photosensitive drum surface, avoid carbon dust to carry quantity not sufficient because of static charge and be difficult to be transferred to photosensitive drum surface, formation is wafted and is deposited pollution.
Description of drawings
Fig. 1 has laser printer handle box principle of work synoptic diagram now.
Fig. 2 laser printer handle box of the present invention partial structurtes synoptic diagram.
The developer roll structural representation of Fig. 3 laser printer handle box of the present invention.
The developer roll cut-open view of Fig. 4 laser printer handle box of the present invention.
Embodiment
Describe laser printer handle box of the present invention in detail below in conjunction with accompanying drawing.
Referring to Fig. 2,3,4, show the partial structurtes synoptic diagram and the parts cut-open view thereof of laser printer handle box of the present invention respectively.
The main make of laser printer handle box of the present invention and the structure of existing laser printer handle box are basic identical, those skilled in the art can consult the correlation technique data of existing handle box and in conjunction with the introduction of background technology part of the present invention to know the essential structure situation of laser printer handle box of the present invention.Given this, the Reference numeral of related member will continue to continue to use the Reference numeral of background technology part identical components of the present invention in the description of laser printer handle box embodiment of the present invention.In addition, waft, deposit original intention that the problem that influence clean environment and printing effect propose suitable solution at existing handle box because of carbon dust according to the present invention, applicant just laser printer handle box of the present invention relates to the structure that its carbon dust is transported to photosensitive drums and partly carries out the emphasis description.
See Fig. 2,3,4, and with reference to Fig. 1, the main composition parts and the handle box shown in Figure 1 100 of handle box 100 of the present invention are basic identical, its formation mainly comprises photosensitive drums 101, charging roller 102, developer roll 105, powder delivery cutter 113, useless powder scraping blade 110.Between developer roll 105 and powder delivery cutter 113, in the position that they are in contact with one another, and be filled with under the state of carbon dust layer between developer roll 105 and powder delivery cutter 113, keeping the developer roll 105 and the powder delivery cutter 113 mutual coefficients of sliding friction is 0.1～2.0, is preferably 1.0～2.0.The coefficient of sliding friction here, be meant between developer roll 105 and powder delivery cutter 113, in the position that they are in contact with one another, between developer roll 105 and powder delivery cutter 113, be filled with under the state of carbon dust layer the friction factor when developer roll 105 keeps sliding mode or powder delivery cutter 113 to keep sliding mode with respect to developer roll 105 with respect to powder delivery cutter 113.In order between developer roll 105 and powder delivery cutter 113, to obtain the above-mentioned coefficient of sliding friction, can on the external cylindrical surface of developer roll 105, coat the elastomeric layer 114 of silicon rubber and so on.
When being equipped with the laser printer work of handle box 100 of the present invention, charged equably by charging roller 102 in photosensitive drums 101 surfaces.The laser scanner 103 that is arranged in the laser printer contains image information and through the laser beam 104 of ovennodulation to photosensitive drums 101 emission, cylindrical surface in photosensitive drums 101 after laser beam 104 irradiations forms the static charge distribution plan that its distribution has difference, that is the electrostatic latent image corresponding with image to be duplicated.Afterwards, the carbon dust 106 that autography roller 105 transmits is under the state of regulating bed thickness through powder delivery cutter 113 then be adsorbed on the cylindrical surface of photosensitive drums 101, and after aforementioned electrostatic latent image was covered, it is converted to can macroscopic visual image.Along with the rotation of photosensitive drums 101, the position at transfer roll 107 places that the visual image transposition that is formed at photosensitive drum surface by carbon dust 106 extremely is provided with in laser printer.Effect through the entrained transfer voltage of transfer roll 107, the carbon dust of visual image form is transferred on the surface of the recording mediums such as paper 108 that are provided with in laser printer, after carrying out heating and pressurizing through the carbon dust that is arranged at warm-up mill 111 in the laser printer and the visual image form on 112 pairs of recording mediums 108 of backer roll subsequently, carbon dust is penetrated in the fibrage of recording medium 108, and the visual image that carbon dust is formed for good and all solidifies on recording medium 108.Visual image on the aforementioned photosensitive drums 101 is after being transferred roller 107 transfer printings, residual carbon dust 109 attached to it is struck off to the useless powder collecting bin (not shown) that is provided with on handle box 100 by useless powder scraping blade 110, and photosensitive drums 101 surfaces return to after respective pins electricity equipment (not shown) is eliminated static does not have the dustless stand-by state of electricity.So far just finished a basic imaging workflow.This flow process is the result of cycle operation repeatedly, just can obtain the needed image of printing person.
Claims (2)
1. laser printer handle box, comprise the photosensitive drums that is used to form electrostatic latent image, developer be sent to described photosensitive drum surface developer roll, be used to regulate the powder delivery cutter of described developer roll surface carbon powder layer thickness, it is characterized in that, be positioned under the state that is filled with described carbon dust layer between described developer roll and the described powder delivery cutter in the portion that they are in contact with one another between described developer roll and the described powder delivery cutter that to keep the mutual coefficient of sliding friction be 0.1～2.0.
2. according to the described laser printer handle box of claim 1, it is characterized in that the described coefficient of sliding friction is 1.0～2.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110098461 CN102141769A (en) | 2011-04-19 | 2011-04-19 | Processing box for laser printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110098461 CN102141769A (en) | 2011-04-19 | 2011-04-19 | Processing box for laser printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102141769A true CN102141769A (en) | 2011-08-03 |
Family
ID=44409354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110098461 Pending CN102141769A (en) | 2011-04-19 | 2011-04-19 | Processing box for laser printer |
Country Status (1)
| Country | Link |
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| CN (1) | CN102141769A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339003A (en) * | 2011-09-16 | 2012-02-01 | 富美科技有限公司 | Carbon powder box |
| CN102411297A (en) * | 2011-12-02 | 2012-04-11 | 珠海天威飞马打印耗材有限公司 | Processing box and processing box refitting method |
| CN108267944A (en) * | 2018-03-26 | 2018-07-10 | 珠海天威飞马打印耗材有限公司 | Drum box |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101454728A (en) * | 2006-05-26 | 2009-06-10 | 藤仓橡胶工业株式会社 | Developing blade |
| CN101477322A (en) * | 2009-01-09 | 2009-07-08 | 珠海赛纳科技有限公司 | Image formation equipment |
-
2011
- 2011-04-19 CN CN 201110098461 patent/CN102141769A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101454728A (en) * | 2006-05-26 | 2009-06-10 | 藤仓橡胶工业株式会社 | Developing blade |
| CN101477322A (en) * | 2009-01-09 | 2009-07-08 | 珠海赛纳科技有限公司 | Image formation equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339003A (en) * | 2011-09-16 | 2012-02-01 | 富美科技有限公司 | Carbon powder box |
| CN102411297A (en) * | 2011-12-02 | 2012-04-11 | 珠海天威飞马打印耗材有限公司 | Processing box and processing box refitting method |
| CN108267944A (en) * | 2018-03-26 | 2018-07-10 | 珠海天威飞马打印耗材有限公司 | Drum box |
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Application publication date: 20110803 |