CN202404356U - Selenium drum developing device of laser printer - Google Patents
Selenium drum developing device of laser printer Download PDFInfo
- Publication number
- CN202404356U CN202404356U CN2012200076914U CN201220007691U CN202404356U CN 202404356 U CN202404356 U CN 202404356U CN 2012200076914 U CN2012200076914 U CN 2012200076914U CN 201220007691 U CN201220007691 U CN 201220007691U CN 202404356 U CN202404356 U CN 202404356U
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- CN
- China
- Prior art keywords
- developer roll
- laser printer
- photosensitive drums
- photosensitive drum
- scraper
- 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
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- Cleaning In Electrography (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
The utility model relates to the technical field of laser printing, in particular to a selenium drum developing device of a laser printer. The selenium drum developing device of the laser printer comprises a carbon powder bin for accommodating carbon powder, a powder feeding roller is arranged in the carbon powder bin, a developing roller is arranged on the upper part of the carbon powder bin, carbon powder is fed to the developing roller through the powder feeding roller and then attached to the surface of the developing roller, an elastic scraper for scraping the powder is arranged on the lateral surface of the developing roller, the carbon powder on the developing roller is scraped uniformly by the elastic scraper and then attracted to the surface of a photosensitive drum above the developing roller, a cleaning scraping plate is arranged on one side of the photosensitive drum, at least three permanent magnets are arranged in the photosensitive drum, and the permanent magnets are distributed on four sides of the axis of the photosensitive drum in a star shape. Through the device, the defects caused by direct contact between the photosensitive drum and the development roller are overcome in a mode that the permanent magnets distributed in the star shape are arranged in the photosensitive drum.
Description
Technical field
The utility model relates to the laser printing technology field, specifically, relates to a kind of laser printer toner cartridge developing apparatus.
Background technology
The contact visualization way is a kind of main visualization way of laser printing, and a lot of printers all adopt this mode of using earlier.
The ultimate principle that the contact printer develops is: a bigger toner is arranged usually; Continuously flow to powder feeding roller to carbon dust with puddle support in the toner; Give the voltage of one-500V of powder feeding roller, can make carbon dust induce electronegativity, powder feeding roller is transported to developer roll with carbon dust then.Mostly developer roll is metal-cored rubber roll, and very big resistance is arranged, and imposes-voltage of 300V to it, makes it have a higher relatively current potential with respect to powder feeding roller, and then the charged toner on the powder feeding roller will be transferred on the developer roll.The developer roll side is provided with the elastic scraper that is used to scrape powder, and elastic scraper and developer roll keep minimum gap, are also imposed an alternating voltage, can constantly make the carbon dust activation and it is hung very thin one deck uniformly in the concussion.Carbon dust on the developer roll is adsorbed to the photosensitive drum surface that is positioned at the developer roll top behind the elastic scraper drawout; Photosensitive drums can obtain-surface voltage of 800V under the action of high voltage of charging roller-1400V, and exposure back visuals potential drop is low to moderate-50V; But not visuals still keeps-current potential of 800V; Carbon dust quilt-the 800V of pact-300V repels on the developer roll, but can be attracted and video picture by-50V, Here it is developing process.This visualization way requires photosensitive drums directly to contact with developer roll, and bigger for the damage of photosensitive drums, driving torque is also big, and each parts accuracy requirement simultaneously is high and cause the bearing cost high, prints also instability of cost.
Simultaneously, elastic scraper of the prior art uses metallic spatula or rubber scraper usually, and all there is the weak point in the use in the two; Metal blade is easy to wear; Elastomer blade and carbon dust frictional electrification property are not high simultaneously, and therefore, this also is a problem that needs solution.
The 3rd defective is that after the completion of once developing, cleaning balde must be wiped the left carbon dust on the photosensitive drums off; Deposit in the waste powder hopper; Charging roller is again to photosensitive drum charging then, removes the rest potential after Polaroid, just can carry out secondary development work then.Present existing charging roller structure comprises the roller core of doing matrix with the metallic conduction material; Be coated with conductive adhesive on the said roller core; Conductive adhesive is provided with the rubber elastic layer that has certain thickness, contains the conductive rubber formation of carbon dust, and conductive rubber elastic layer outside is coated with conductive coating.Charging roller in the mill, complex process, serious environment pollution.Simultaneously, the voltage consumption in conductive coating breakage or clean and the operation process can cause that photosensitive drums discharges and recharges deficiency, and print quality is exerted an influence.And cleaning balde generally is not have electric conductivity.
Therefore,, adapt to the needs of reality, be necessary to design a kind of novel laser printer toner cartridge developing apparatus 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; Adapt to the needs of reality, a kind of laser printer toner cartridge developing apparatus is provided, primary purpose is that solution directly contacts with developer roll because of photosensitive drums; Damage for photosensitive drums is bigger; Driving torque is also big, and each parts accuracy requirement simultaneously is high and cause the bearing cost high, prints also unstable these problems of cost.
Second purpose is to solve elastic scraper and adopts metal blade or elastomer blade all to have the problem of use defective separately separately.
The 3rd purpose of the utility model is to solve the problem that exists in conductive rollers and the cleaning balde use.
In order to realize the purpose of the utility model, the technical scheme that the utility model adopts is:
A kind of laser printer toner cartridge developing apparatus; Comprise the toner that is used for the splendid attire carbon dust, be provided with powder feeding roller in the said toner, said toner top is provided with developer roll; Carbon dust after powder feeding roller is delivered to developer roll in the developer roll surface attachment; The developer roll side is provided with the elastic scraper that is used to scrape powder, and the carbon dust on the said developer roll is adsorbed to the photosensitive drum surface that is positioned at the developer roll top behind the elastic scraper drawout, and said photosensitive drums one side is provided with cleaning balde; The inside of said photosensitive drums is provided with permanent magnet, said permanent magnet be made as at least three and be star be distributed in the photosensitive drums axis around.
Said permanent magnet be six and be star be distributed in the photosensitive drums axis around.
Said elastic scraper is two and lays respectively at the top and the below of developer roll, and the elastic scraper of said developer roll top is a metallic spatula, and the scraper of developer roll below is the rubber scraper.
Said cleaning balde is a current-carrying plate, is connected with power supply through power lead.
The beneficial effect of the utility model is:
1. be employed in the mode of the permanent magnet that star is set in the photosensitive drums, overcome photosensitive drums and directly contacted the defective of bringing with developer roll;
2. 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;
3. cleaning balde and charging roller are united two into one, saved the trouble on charging roller is made, reduced cost, reduced pollution simultaneously.
Description of drawings
Fig. 1 is one of structural representation of the utility model;
Fig. 2 be the utility model structural representation two;
Fig. 3 be the utility model structural representation three.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified:
Embodiment one: referring to Fig. 1.
The utility model relates to the laser printing technology field, specifically, relates to a kind of laser printer toner cartridge developing apparatus.A kind of laser printer toner cartridge developing apparatus; Comprise the toner 1 that is used for the splendid attire carbon dust, be provided with powder feeding roller 2 in the said toner 1, said toner 1 top is provided with developer roll 3; Carbon dust after powder feeding roller 2 is delivered to developer roll 3 in developer roll 3 surface attachment; Developer roll 3 sides are provided with the elastic scraper 4 that is used to scrape powder, and the carbon dust on the said developer roll 3 is adsorbed to photosensitive drums 5 surfaces that are positioned at developer roll 3 tops behind elastic scraper 4 drawouts, and said photosensitive drums 5 one sides are provided with cleaning balde 6; The inside of said photosensitive drums 5 is provided with permanent magnet 7, said permanent magnet 7 be made as at least three and be star be distributed in photosensitive drums 5 axis around.
Among the figure, 8 is charging roller.
Just can under the effect of permanent magnet 7, be attached to the surface of photosensitive drums 5 attached to the carbon dusts on developer roll 3 surface, so just overcome photosensitive drums 5 and directly contacted the defective of bringing with developer roll 3.
As preferred embodiment a kind of, permanent magnet 7 be six and be star be distributed in photosensitive drums 5 axis around.
Embodiment two: referring to Fig. 2.
There are many something in common in present embodiment and embodiment one; Its something in common is not given unnecessary details; Difference only is, in the present embodiment, said elastic scraper is two and lays respectively at the top and the below of developer roll 3; The elastic scraper of said developer roll 3 tops is a metallic spatula, and the scraper of developer roll below is the rubber scraper.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.
Embodiment three: referring to Fig. 3.
There are many something in common in present embodiment and embodiment two, and its something in common is not given unnecessary details, and difference only is that in the present embodiment, said cleaning balde 6 is a current-carrying plate, is connected with power supply through power lead.
Present embodiment is an illustrated embodiments, has saved charging roller 8, makes cleaning balde 6 with current-carrying plate; And be connected with power supply through power lead, when power connection, can be used as conductor and replace charging roller that photosensitive drums 5 is charged; During outage, can realize the function of common cleaning balde.Like this, cleaning balde and charging roller are united two into one, saved the trouble on charging roller is made, reduced cost, reduced pollution simultaneously.
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 (4)
1. laser printer toner cartridge developing apparatus; Comprise the toner that is used for the splendid attire carbon dust, be provided with powder feeding roller in the said toner, said toner top is provided with developer roll; Carbon dust after powder feeding roller is delivered to developer roll in the developer roll surface attachment; The developer roll side is provided with the elastic scraper that is used to scrape powder, and the carbon dust on the said developer roll is adsorbed to the photosensitive drum surface that is positioned at the developer roll top behind the elastic scraper drawout, and said photosensitive drums one side is provided with cleaning balde; It is characterized in that: the inside of said photosensitive drums is provided with permanent magnet, said permanent magnet be made as at least three and be star be distributed in the photosensitive drums axis around.
2. laser printer toner cartridge developing apparatus according to claim 1 is characterized in that: said permanent magnet be six and be star be distributed in the photosensitive drums axis around.
3. laser printer toner cartridge developing apparatus according to claim 1; It is characterized in that: said elastic scraper is two and lays respectively at the top and the below of developer roll; The elastic scraper of said developer roll top is a metallic spatula, and the scraper of developer roll below is the rubber scraper.
4. laser printer toner cartridge developing apparatus according to claim 1 is characterized in that: said cleaning balde is a current-carrying plate, is connected with power supply through power lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200076914U CN202404356U (en) | 2012-01-10 | 2012-01-10 | Selenium drum developing device of laser printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200076914U CN202404356U (en) | 2012-01-10 | 2012-01-10 | Selenium drum developing device of laser printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202404356U true CN202404356U (en) | 2012-08-29 |
Family
ID=46701996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200076914U Expired - Fee Related CN202404356U (en) | 2012-01-10 | 2012-01-10 | Selenium drum developing device of laser printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202404356U (en) |
-
2012
- 2012-01-10 CN CN2012200076914U patent/CN202404356U/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: 20120829 Termination date: 20140110 |