CN201945808U - New developing unit of contact type developing toner cartridge - Google Patents
New developing unit of contact type developing toner cartridge Download PDFInfo
- Publication number
- CN201945808U CN201945808U CN2011200278574U CN201120027857U CN201945808U CN 201945808 U CN201945808 U CN 201945808U CN 2011200278574 U CN2011200278574 U CN 2011200278574U CN 201120027857 U CN201120027857 U CN 201120027857U CN 201945808 U CN201945808 U CN 201945808U
- Authority
- CN
- China
- Prior art keywords
- developer roll
- toner cartridge
- carbon dust
- knife rest
- carbon powder
- 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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- Dry Development In Electrophotography (AREA)
- Developing For Electrophotography (AREA)
Abstract
The utility model discloses a new developing unit of a contact type developing toner cartridge, which comprises carbon powder filled in a carbon powder bin and a developing roll arranged on the carbon powder bin, wherein the developing roll is provided with a powder controlling device; a photosensitive drum is arranged above the developing roll and is provided with a cleaning scraper and a charging roll; direct current is applied on the developing roll and the voltage of the direct current ranges from -300V to -800v or from 300V to 800V; the minimum space between the developing roll and the photosensitive drum is 0-0.4mm; and the carbon powder is magnetic component carbon powder, and a magnetic roll is used as the developing roll. Through the structure, the photosensitive drum does not need to be contacted with the developing roll directly, the magnetic component carbon powder can be adsorbed on a static sub-image area on the photosensitive drum through the action of electric field force so as to be converted into carbon powder images; and the new developing unit can enable the torsion of the developing roll to be less, the working stability is high, and the entire cost is low.
Description
Technical field
The utility model relates to a kind of contact development toner cartridge, particularly a kind of new developing apparatus of black contact development toner cartridge.
Background technology
The contact visualization way is wherein a kind of main visualization way of laser printing.Monochrome laser printer such as Samsung and brother has adopted this visualization way mostly, and different is that Samsung has adopted non-magnetic mono-component electronegativity carbon dust, and the brother has adopted non-magnetic mono-component electropositivity carbon dust.With the Samsung is example, and a bigger powder storehouse is arranged usually, interiorly with puddle support carbon dust is continuously flowed to powder feeding roller, because developer roll must lean on the continuous turning handle carbon dust of powder feeding roller to deliver to above it.Therefore powder feeding roller is many with there being the porosint of certain resistance to make.When the voltage of giving powder feeding roller with pact-500v, can make carbon dust generate electronegativity.Developer roll mostly is metal-cored rubber roll, and very big bulk resistor is arranged, and imposes-during the voltage of 300v, will transfer on the high developer roll of relative current potential for the charged toner on the powder roller to it.Elastic metallic scraper and developer roll keep minimum gap, and it also is subjected to an alternating voltage, can constantly make the carbon dust activation and it is spread to very thin one deck uniformly in the concussion.And photosensitive drums can obtain under charging roller-1400V high pressure effect-surface voltage of 800V, exposure back visuals current potential is reduced to – 50V (this is a rest potential), but not visuals (white area) Bao Chi – 800V current potential still, the ink powder Bei – 800V of Yue – 300V repels Shang the developer roll, but can be attracted and video picture by-50V, this is a developing process.This visualization way requires photosensitive drums directly to contact with developer roll, and bigger to the damage of photosensitive drums, driving torque is also big, and each parts accuracy requirement height causes the cost of manufacture height simultaneously, and print quality is also unstable.
The utility model content
In order to overcome the deficiencies in the prior art, the utility model provides a kind of moment of torsion little, job stability height, the new developing apparatus of the contact development toner cartridge that cost is low.
The technical scheme that its technical matters that solves the utility model adopts is:
The new developing apparatus of contact development toner cartridge, it is characterized in that: comprise being loaded on the carbon dust in the toner and being arranged at developer roll on the toner, this developer roll is provided with control powder device, and this developer roll top is provided with photosensitive drums, this photosensitive drums is provided with the cleaning doctor charging roller, be applied with direct current on the described developer roll, this galvanic voltage range-300V～-800V or 300V～800V, the minimum spacing of described developer roll and photosensitive drums is less than 0.4mm, described carbon dust is magnetic single component electronegativity carbon dust or magnetic single component electropositivity carbon dust, and described developer roll is the magnetic roller.
Further improve as the utility model, described control powder device comprises knife rest, and this knife rest is provided with and contacted sheet metal of developer roll and rubber strip, and this sheet metal is positioned at the below of developer roll, and this rubber strip is positioned at the top of developer roll.
Described sheet metal is fixed on the knife rest by welding or bonding method, and described rubber strip sticks on the knife rest by bonding agent
Described knife rest is the metal knife rest.
The minimum spacing of described developer roll and photosensitive drums is 0.2mm.
Described galvanic voltage is-500V or 500V.
The beneficial effects of the utility model are: the utility model has installed magnetic single component electronegativity carbon dust or magnetic single component electropositivity carbon dust and be provided with developer roll on toner in toner, this developer roll is the magnetic roller.Be provided with control powder device on the developer roll and be provided with photosensitive drums in the developer roll top, and the minimum spacing of developer roll and photosensitive drums is 0.2mm, on the developer roll in addition-DC voltage of 500v or 500V, by this structure, photosensitive drums needn't directly contact with developer roll, and magnetic single component electronegativity carbon dust or magnetic single component electropositivity carbon dust just can be adsorbed on by the effect of electric field force in the electrostatic latent image district on the photosensitive drums, and be converted into the carbon dust image, this installs, and not only the suffered moment of torsion of developer roll is little, and the job stability height, whole cost is low.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified:
Fig. 1 is an overall schematic of the present utility model.
Embodiment
With reference to Fig. 1, the utility model discloses a kind of new developing apparatus of contact development toner cartridge, comprise and be loaded on the carbon dust in the toner 1 and be arranged at developer roll 7 on the toner 1, this developer roll 7 is provided with control powder device, these developer roll 7 tops are provided with photosensitive drums 8, this photosensitive drums 8 is provided with charging roller 9 and cleaning doctor 10, be applied with direct current on the developer roll 7, this galvanic voltage range-300V～-800V or 300V～800V, the minimum spacing of described developer roll 7 and photosensitive drums 8 is less than 0.4mm, described carbon dust is magnetic single component electronegativity carbon dust or magnetic single component electropositivity carbon dust 2, and described developer roll 7 is the magnetic roller.As shown in the figure, in this example, control powder device comprises knife rest 5, this knife rest 5 is provided with and developer roll 7 contacted sheet metal 3 and rubber strips 4, this sheet metal 3 is positioned at the below of developing element, this rubber strip 4 is positioned at the top of developing element, above-mentionedly do not constitute restriction of the present utility model for a preferred structure of the present utility model, adopt this structure not only magnetic single component electronegativity carbon dust or magnetic single component electropositivity carbon dust 2 frictional electrification height, the control powder good stability of while cutter, this structure also can singly be used sheet metal 3 or rubber strip 4 certainly.Further, rubber strip 4 sticks on the knife rest 5 by bonding agent 6, adopts bonding agent 6 to stick on and has both reduced process on the knife rest 5, is convenient to again install, certainly this structure also can adopt other mounting meanss as being screwed etc., and sheet metal is fixed on the knife rest 5 by welding or bonding method.Described knife rest 5 is a metal knife rest 5, and metal knife rest 5 has good rigidly, the advantage that intensity is high, and this structure also can adopt plastics knife rest 5 etc. certainly.Developer roll is the magnetic roller in this structure, is a magnetic core in the magnetic roller, the outer sheathed rotating aluminium cover of magnetic core, and a kind of existing structure as this area is not described in detail in this.Magnetic single component electronegativity carbon dust or magnetic single component electropositivity carbon dust can buied, so be not described in detail in this on the market as a kind of versatile material of this area.
As a preferred version of this structure, developer roll 7 is preferably 0.2mm with the minimum spacing of photosensitive drums 8; Galvanic voltage is preferably-500V or 500V.This voltage and apart from the time, magnetic single component electronegativity carbon dust or magnetic single component electropositivity carbon dust 2 can fully be adsorbed onto in the electrostatic latent image scope of photosensitive drums 8 and electrostatic latent image can not be adsorbed with magnetic single component carbon dust 2 outward, can reach best development effect.
This device principle of work is as follows, and the described developer roll 7 of this structure is mainly by a fixed magnetic core stick and being sleeved on the magnetic core stick, and can form around the aluminium sleeve that magnetic core stick is rotated.Magnetic single component electronegativity carbon dust or magnetic single component electropositivity carbon dust 2 during work is owing to be subjected to that the effect of magnetic field force is adsorbed on aluminium cover surface and scrape mutually to produce to rub with sheet metal 3 earlier with the rotation of aluminium cover making magnetic single component electronegativity carbon dust or magnetic single component electropositivity carbon dust 2 be with negative charge or positive charge, scrape mutually with rubber strip 4 then, further control the thickness of magnetic single component carbon dust 2 and magnetic single component carbon dust 2 is attached on the developer roll 7 more equably.Aluminium cover and photosensitive drums 8 keep the distance of about 0.2mm simultaneously.In addition, developer roll 7 aluminium put and are added with a direct current, galvanic voltage pact-500V or 500V.Be adsorbed to electrostatic latent image district on the photosensitive drums 8 at electric field force effect magnetic one-component electronegativity carbon dust or magnetic single component electropositivity carbon dust 2, change visual magnetic single component carbon dust 2 images into and finish developing process.
Claims (6)
1. the new developing apparatus of a contact development toner cartridge, it is characterized in that: comprise being loaded on the carbon dust in the toner and being arranged at developer roll on the toner, this developer roll is provided with control powder device, and this developer roll top is provided with photosensitive drums, this photosensitive drums is provided with cleaning doctor and charging roller, be applied with direct current on the described developer roll, this galvanic voltage range is-300～-800 or 300V～800V, the minimum spacing of described developer roll and photosensitive drums is less than 0.4mm, described carbon dust is magnetic single component electronegativity carbon dust or magnetic single component electropositivity carbon dust, and described developer roll is the magnetic roller.
2. the new developing apparatus of a kind of contact development toner cartridge according to claim 1, it is characterized in that: described control powder device comprises knife rest, this knife rest is provided with and contacted sheet metal of developer roll and rubber strip, this sheet metal is positioned at the below of developer roll, and this rubber strip is positioned at the top of developer roll.
3. the new developing apparatus of a kind of contact development toner cartridge according to claim 2 is characterized in that: described sheet metal is fixed on the knife rest by welding or bonding method, and described rubber strip sticks on the knife rest by bonding agent.
4. the new developing apparatus of a kind of contact development toner cartridge according to claim 2 is characterized in that: described knife rest is the metal knife rest.
5. the new developing apparatus of a kind of contact development toner cartridge according to claim 1 is characterized in that: the minimum spacing of described developer roll and photosensitive drums is 0.2mm.
6. the new developing apparatus of a kind of contact development toner cartridge according to claim 1 is characterized in that: described galvanic voltage is-500V or 500V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200278574U CN201945808U (en) | 2010-11-30 | 2011-01-27 | New developing unit of contact type developing toner cartridge |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010564848.9 | 2010-11-30 | ||
| CN2010105648489A CN101986214A (en) | 2010-11-30 | 2010-11-30 | Novel developing device for contact type development toner cartridge |
| CN2011200278574U CN201945808U (en) | 2010-11-30 | 2011-01-27 | New developing unit of contact type developing toner cartridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201945808U true CN201945808U (en) | 2011-08-24 |
Family
ID=43710566
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105648489A Withdrawn CN101986214A (en) | 2010-11-30 | 2010-11-30 | Novel developing device for contact type development toner cartridge |
| CN2011200278574U Expired - Fee Related CN201945808U (en) | 2010-11-30 | 2011-01-27 | New developing unit of contact type developing toner cartridge |
| CN 201110029506 Pending CN102129194A (en) | 2010-11-30 | 2011-01-27 | Novel developing device for contact developing toner cartridge |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105648489A Withdrawn CN101986214A (en) | 2010-11-30 | 2010-11-30 | Novel developing device for contact type development toner cartridge |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110029506 Pending CN102129194A (en) | 2010-11-30 | 2011-01-27 | Novel developing device for contact developing toner cartridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN101986214A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202512365U (en) * | 2012-03-20 | 2012-10-31 | 珠海市奔码打印耗材有限公司 | Developing device |
| CN111856906A (en) * | 2020-08-25 | 2020-10-30 | 广州欣彩电脑耗材有限公司 | Toner cartridge capable of adjusting torque of toner feeding roller |
| CN113031416A (en) * | 2021-04-23 | 2021-06-25 | 中山市奔码打印耗材有限公司 | Powder control structure of laser printer processing box |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3126567B2 (en) * | 1993-10-19 | 2001-01-22 | 富士通株式会社 | Developing device |
| JP2001228705A (en) * | 2000-02-17 | 2001-08-24 | Ricoh Co Ltd | Developing device |
| JP2007078940A (en) * | 2005-09-13 | 2007-03-29 | Ricoh Co Ltd | Developing roller, developing device, process cartridge and image forming apparatus |
-
2010
- 2010-11-30 CN CN2010105648489A patent/CN101986214A/en not_active Withdrawn
-
2011
- 2011-01-27 CN CN2011200278574U patent/CN201945808U/en not_active Expired - Fee Related
- 2011-01-27 CN CN 201110029506 patent/CN102129194A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN102129194A (en) | 2011-07-20 |
| CN101986214A (en) | 2011-03-16 |
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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: 20110824 Termination date: 20140127 |