CN103048906A - Electrophotographic imaging method - Google Patents
Electrophotographic imaging method Download PDFInfo
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- CN103048906A CN103048906A CN2012105718279A CN201210571827A CN103048906A CN 103048906 A CN103048906 A CN 103048906A CN 2012105718279 A CN2012105718279 A CN 2012105718279A CN 201210571827 A CN201210571827 A CN 201210571827A CN 103048906 A CN103048906 A CN 103048906A
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- recording materials
- photosensitive drums
- developer roll
- carbon dust
- electrostatic latent
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Abstract
The invention discloses an electrophotographic imaging method. The method comprises the following steps: providing a light-sensitive drum, providing a development chamber inside which powdered carbon is held and has static electricity, providing an image fixing device, enabling the light-sensitive drum to form a latent electrographic image, transferring the latent electrographic image onto the surface of a recording material, adsorbing the powdered carbon onto the surface of the recording material through the latent electrographic image, and finally fixing the powdered carbon on the surface of the recording material through the image fixing device. During the imaging process, the light-sensitive drum is not in contact with the powdered carbon, so that the light-sensitive drum is not contaminated by the powdered carbon, resulting in the increase of service life of the light-sensitive drum. Furthermore, the light-sensitive drum is not in contact with the powdered carbon, so that the light-sensitive drum does not need to be cleaned and the cleaning device is not eliminated. Therefore, the friction on the surface of the light-sensitive drum is reduced, the service life of the light-sensitive drum is prolonged, and the cost is reduced.
Description
Technical field
The present invention relates to a kind of electrophotographic image forming method.
Background technology
The imaging device of electro photography such as laser printer are a kind of electrofax principles of utilizing, and through overcharging, exposure is developed at least, transfer printing, and photographic fixing, the process of cleaning is at the equipment of image forming medium such as paper formation image.
Existing laser printer uses cartridge that carbon dust is provided.Cartridge generally includes framework, be provided with in the framework powder storehouse and with the developing cell of this powder storehouse adjacency.Wherein, powder accommodates carbon dust in the storehouse, be arranged on puddle support in the powder storehouse in the process that stirs with the required developing cell of carbon powder supplying.Developing cell generally includes powder feeding roller, developer roll, powder outlet cutter, charging roller, photosensitive drums and cleaning doctor.Wherein, powder feeding roller is supplied to developer roll with the carbon dust that supply in the powder storehouse comes, and powder outlet cutter is used for regulating the carbon dust layer thickness of developing roller surface.The formation method of printer is as follows: charging roller is to the predetermined electric charge of filling with of the surface uniform of photosensitive drums, subsequently, printer optionally exposes to the photosensitive drum surface of filling even predetermined charge with, because the light sensitive characteristic of photosensitive drums, the electric charge that is exposed the zone will be grounded cancellation, like this, the photosensitive drum surface after exposure forms the electrostatic latent image that is characterized by charge distribution that forms image corresponding to institute's wish.Carbon dust on the developer roll is delivered to the electrostatic latent image district of photosensitive drum surface by the effect of electric field force, so that above-mentioned electrostatic latent image obtains is visual, namely shows image.By the transfer device on the printer carbon dust on the electrostatic latent image of photosensitive drum surface is transferred on the recording materials afterwards, by fixing device the carbon dust of transferring on the recording materials is fixed again.After development was finished, the cleaning doctor carbon dust that photosensitive drum surface is residual in the cartridge was wiped off, enters next imaging cycle to avoid it, causes print defect.
In the above-mentioned electrophotographic image forming method, carbon dust can be attached directly to photosensitive drum surface, and the various materials in the carbon dust will directly contact photosensitive drum surface, and the photoactive substance of photosensitive drum surface is polluted.So just shorten the serviceable life of photosensitive drums, also affected print quality.On the other hand, because carbon dust can not all be transferred on the recording materials in the transfer step, therefore need to carbon dust residual on the photosensitive drums be cleaned.The remaining carbon dust of cleaning need to arrange extra cleaning device, thereby increases manufacturing cost.Cleaning device needs in cleaning course and directly contacts with photosensitive drums, and this also damages photosensitive drums easily.
Therefore, provide a kind of novel formation method real in necessary.
Summary of the invention
The purpose of this invention is to provide a kind of can the Effective Raise photosensitive drums life-span and reduce the electrophotographic image forming method of cost.
For achieving the above object, the invention provides a kind of electrophotographic image forming method, comprise providing photosensitive drums; Developing chamber is provided, accommodates carbon dust in the described developing chamber, described carbon dust is with static; Recording materials are provided, fixing device is provided, make first photosensitive drums form electrostatic latent image, again the electrostatic latent image on the photosensitive drums is transferred to the recording materials surface, described electrostatic latent image is adsorbed to described recording materials surface with described carbon dust; Use at last fixing device further the carbon dust on recording materials surface to be fixed.
Electrophotographic image forming method of the present invention has following beneficial effect: in the imaging process, photosensitive drums does not contact carbon dust, so photosensitive drums can not be subject to the pollution of carbon dust, thereby has promoted the life-span of photosensitive drums.Further, because photosensitive drums does not contact carbon dust, therefore need not photosensitive drums is cleaned, thereby omitted cleaning device, so both reduced the friction of photosensitive drum surface, promoted the life-span of photosensitive drums, also reduced cost.
Description of drawings
Fig. 1 is the work synoptic diagram of electrophotographic image forming method the first embodiment of the present invention.
Fig. 2 is the work synoptic diagram of electrophotographic image forming method the second embodiment of the present invention.
Fig. 3 is the work synoptic diagram of electrophotographic image forming method the 3rd embodiment of the present invention.
Embodiment
Referring to Fig. 1, electrophotographic image forming comprises recording materials conveying device 1, exposure device 2, photosensitive drums 3, developing chamber 4 and fixing device 5.Wherein, accommodate carbon dust in the developing chamber 4, carbon dust is with static.Developing chamber is provided with developer roll 41 in the position of carbon dust outlet.Developer roll 41 and photosensitive drums 3 positioned opposite, and have the gap between the two.The formation method of electrophotographic image forming is as follows: at first, photosensitive drums 3 is followed recording materials 6 along A to feeding, and is passed through from described gap by the rear electrostatic latent image that forms of exposure device 2 irradiations.Recording materials 6 contact with photosensitive drums 3, and electrostatic latent image is transferred on the recording materials 6 thus.Simultaneously, developer roll 41 begins rotation, because developer roll 41 and photosensitive drums 3 positioned opposite, in developer roll 41 rotary courses, carbon dust with static is transferred on the recording materials 6 under the electric field force effect of electrostatic latent image, uses at last fixing device 5 further the carbon dust on recording materials 6 surfaces to be fixed.In this formation method, photosensitive drums 3 need not to contact carbon dust in whole process, so photosensitive drums 3 can not be subject to the pollution of carbon dust.Because photosensitive drums 3 does not contact carbon dust, need not it is cleaned, thereby omitted cleaning device in addition, so both reduced the friction on photosensitive drums 3 surfaces, promoted the life-span of photosensitive drums 3, also reduced cost.
Referring to Fig. 2, electrophotographic image forming comprises recording materials conveying device 1, exposure device 2, photosensitive drums 3, developing chamber 4 and fixing device 5.Wherein, accommodate carbon dust in the developing chamber 4, carbon dust is with static.Developing chamber is provided with developer roll 41 in the position of carbon dust outlet.Developer roll 41 and photosensitive drums 3 positioned opposite, and have the gap between the two.The formation method of electrophotographic image forming is as follows: at first, photosensitive drums 3 is followed recording materials 6 along A to feeding, and is passed through from described gap by the rear electrostatic latent image that forms of exposure device 2 irradiations.Form the interval between recording materials 6 and the photosensitive drums 3, because the effect of electric field force, electrostatic latent image still can be transferred on the recording materials 6.Simultaneously, developer roll 41 begins rotation, because developer roll 41 and photosensitive drums 3 positioned opposite, the carbon dust with static on the developer roll 41 is transferred on the recording materials 6 under the electric field force effect of electrostatic latent image, uses at last fixing device 5 further the carbon dust on recording materials 6 surfaces to be fixed.The formation method of present embodiment is compared with respect to the formation method of the first embodiment, has further omitted the friction between photosensitive drums 3 and the recording materials 6, has therefore further promoted the life-span of photosensitive drums.
Referring to Fig. 3, electrophotographic image forming comprises recording materials conveying device 1, exposure device 2, photosensitive drums 3, developing chamber 4 and fixing device 5.Wherein, accommodate carbon dust in the developing chamber 4, carbon dust is with static.Developing chamber is provided with developer roll 41 in the position of carbon dust outlet.Recording materials 6 look up from A along A to feeding, and described developer roll 41 is positioned at the downstream of described photosensitive drums 3.The formation method of electrophotographic image forming is as follows: recording materials 6 contact through photosensitive drums 3 and with photosensitive drums 3 first, make electrostatic latent image be transferred to recording materials 6 surfaces, behind the recording materials 6 through developer roll 41, the carbon dust that described electrostatic latent image is supplied developer roll 41 is adsorbed to recording materials 6 surfaces, uses at last fixing device 5 further the carbon dust on recording materials 6 surfaces to be fixed.
The electrophotographic image forming of above embodiment can also be further in series or in parallel with each other, and adopt the carbon dust of different colours, thereby obtain the more abundant image of color at recording materials.
Claims (4)
1. electrophotographic image forming method comprises:
Photosensitive drums is provided;
Developing chamber is provided, accommodates carbon dust in the described developing chamber, described carbon dust is with static;
Recording materials are provided,
Fixing device is provided,
It is characterized in that:
Make first photosensitive drums form electrostatic latent image,
Again the electrostatic latent image on the photosensitive drums is transferred to the recording materials surface, described electrostatic latent image is adsorbed to described recording materials surface with described carbon dust;
Use at last fixing device further the carbon dust on recording materials surface to be fixed.
2. electrophotographic image forming method according to claim 1 is characterized in that:
Developer roll is provided; Described developer roll is contained in the described developing chamber, and described developer roll and described photosensitive drums positioned opposite have the gap between the two,
Recording materials pass through from described gap and contact with photosensitive drums, and described electrostatic latent image is transferred to the recording materials surface, and simultaneously, the carbon dust that described electrostatic latent image is supplied developer roll is adsorbed to the recording materials surface.
3. electrophotographic image forming method according to claim 1 is characterized in that:
Developer roll is provided; Described developer roll is contained in the described developing chamber, and described developer roll and described photosensitive drums positioned opposite have the gap between the two,
By also and between the photosensitive drums forming the interval, described electrostatic latent image is transferred to the recording materials surface to recording materials from described gap, and simultaneously, the carbon dust that described electrostatic latent image is supplied developer roll is adsorbed to the recording materials surface.
4. electrophotographic image forming method according to claim 1 is characterized in that:
Developer roll is provided; Described developer roll is contained in the described developing chamber, and the supplier looks up from recording materials, and described developer roll is positioned at the downstream of described photosensitive drums;
Recording materials pass through first photosensitive drums, and described electrostatic latent image is transferred to the recording materials surface,
Through developer roll, the carbon dust that described electrostatic latent image is supplied developer roll is adsorbed to the recording materials surface behind the recording materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105718279A CN103048906A (en) | 2012-12-25 | 2012-12-25 | Electrophotographic imaging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105718279A CN103048906A (en) | 2012-12-25 | 2012-12-25 | Electrophotographic imaging method |
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| Publication Number | Publication Date |
|---|---|
| CN103048906A true CN103048906A (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012105718279A Pending CN103048906A (en) | 2012-12-25 | 2012-12-25 | Electrophotographic imaging method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54101331A (en) * | 1978-01-26 | 1979-08-09 | Sharp Corp | Electrophotographic device of electrostatic latent image transfer system |
| US4365549A (en) * | 1978-12-14 | 1982-12-28 | Dennison Manufacturing Company | Electrostatic transfer printing |
| US5099281A (en) * | 1990-10-15 | 1992-03-24 | Compaq Computer Corporation | Electrophotographic interposition development with means for removing moisture from conventional paper |
| US5213922A (en) * | 1989-03-17 | 1993-05-25 | Dai Nippon Printing Co., Ltd. | Electrostatic printing method |
| JP2002221850A (en) * | 2001-01-25 | 2002-08-09 | Ricoh Co Ltd | Charge generator and image forming device |
| CN1532638A (en) * | 2003-03-25 | 2004-09-29 | 虹光精密工业（苏州）有限公司 | Printing device for improving printing quanlity |
| CN202512365U (en) * | 2012-03-20 | 2012-10-31 | 珠海市奔码打印耗材有限公司 | Developing device |
-
2012
- 2012-12-25 CN CN2012105718279A patent/CN103048906A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54101331A (en) * | 1978-01-26 | 1979-08-09 | Sharp Corp | Electrophotographic device of electrostatic latent image transfer system |
| US4365549A (en) * | 1978-12-14 | 1982-12-28 | Dennison Manufacturing Company | Electrostatic transfer printing |
| US5213922A (en) * | 1989-03-17 | 1993-05-25 | Dai Nippon Printing Co., Ltd. | Electrostatic printing method |
| US5099281A (en) * | 1990-10-15 | 1992-03-24 | Compaq Computer Corporation | Electrophotographic interposition development with means for removing moisture from conventional paper |
| JP2002221850A (en) * | 2001-01-25 | 2002-08-09 | Ricoh Co Ltd | Charge generator and image forming device |
| CN1532638A (en) * | 2003-03-25 | 2004-09-29 | 虹光精密工业（苏州）有限公司 | Printing device for improving printing quanlity |
| CN202512365U (en) * | 2012-03-20 | 2012-10-31 | 珠海市奔码打印耗材有限公司 | Developing device |
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Application publication date: 20130417 |