CN102914956A - Method for modifying jumping type developing carbon powder box - Google Patents

Method for modifying jumping type developing carbon powder box Download PDF

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Publication number
CN102914956A
CN102914956A CN2012103904969A CN201210390496A CN102914956A CN 102914956 A CN102914956 A CN 102914956A CN 2012103904969 A CN2012103904969 A CN 2012103904969A CN 201210390496 A CN201210390496 A CN 201210390496A CN 102914956 A CN102914956 A CN 102914956A
Authority
CN
China
Prior art keywords
powder
magnetic
carbon powder
developer roll
developing roller
Prior art date
Application number
CN2012103904969A
Other languages
Chinese (zh)
Inventor
苏健强
杨晓锋
Original Assignee
珠海天威飞马打印耗材有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 珠海天威飞马打印耗材有限公司 filed Critical 珠海天威飞马打印耗材有限公司
Priority to CN2012103904969A priority Critical patent/CN102914956A/en
Publication of CN102914956A publication Critical patent/CN102914956A/en

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Abstract

The invention provides a method for modifying a jumping type developing carbon powder box. The carbon powder box comprises a waste powder storehouse and a powder storehouse with a powder storage cavity, wherein a powder feeding roller, a non-magnetic developing roller and a powder output knife are arranged in the powder storehouse; and a photosensitive drum is arranged in the waste powder storehouse. The method comprises the following steps: changing the non-magnetic developing roller into a magnetic developing roller; cleaning the powder storage cavity; and filling magnetic carbon powder into the cleaned powder storage cavity. In the technical scheme, the non-magnetic developing roller is replaced by the magnetic developing roller, the magnetic carbon powder is adopted, and the magnetic developing roller can apply a magnetic force to the magnetic carbon powder and adsorb the magnetic carbon powder to the surface of the magnetic developing roller, so that the control on the carbon powder by the developing roller is greatly enhanced, the powder floating phenomenon of the carbon powder box is avoided, the pollution to the carbon powder box and electrophotographic imaging equipment by the carbon powder is eliminated and the imaging quality is improved.

Description

The method of modifying of jump type developing cartridge

Technical field

The present invention relates to a kind of method of modifying of jump type developing cartridge, particularly relate to a kind of method of modifying that is removably installed in the jump type developing cartridge of electrophotographic image forming.

Background technology

For example the electrophotographic image forming of the laser printer carbon dust that uses cartridge to provide develops to the electrostatic latent image that is formed at photosensitive drum surface.In developing process, developer roll carries carbon dust and carbon dust is transported to developing regional, is transferred to photosensitive drums to finish the development of electrostatic latent image at the developing regional carbon dust by developer roll.According to whether there being the gap between developer roll and the photosensitive drums, cartridge can be divided into two kinds of contact type developing cartridge and jump type developing cartridges.In the contact type developing cartridge, contact with certain pressure between photosensitive drums and the developer roll; And in the jump type developing cartridge, have a predetermined gap between photosensitive drums and the developer roll, the development bias voltage puts on developer roll, carbon dust the effect of development bias voltage under skip this predetermined gap and arrive photosensitive drums by developer roll.

Existing a kind of jump type developing cartridge that adopts non magnetic carbon dust and metal nonmagnetic developer roll, often have the part carbon dust to have charged bad defective in this cartridge, this part carbon dust can not arrive photosensitive drums in the process that is jumped to photosensitive drums by developer roll.And because developer roll can only rely on electrostatic force absorption carbon dust, so this part carbon dust can not turn back to developer roll, thereby causes cartridge occur the wafing defective of powder, make dirty cartridge and electrophotographic image forming, even can have influence on image quality.

Summary of the invention

The method of modifying that the purpose of this invention is to provide a kind of above-mentioned jump type developing cartridge is to solve the existing powder problem of wafing of this jump type developing cartridge.

For achieving the above object, the technical solution adopted in the present invention is: the method for modifying of jump type developing cartridge, this cartridge comprises waste powder hopper and has the powder storehouse of powder storing chamber, is provided with powder feeding roller, nonmagnetic developer roll and powder outlet cutter in the powder storehouse, is provided with photosensitive drums in the waste powder hopper.Method of modifying comprises nonmagnetic developer roll is replaced by the magnetic developer roll, and the cleaning powder storing chamber, and can magnetic carbon dust in the powder storing chamber after the cleaning.

In technique scheme, nonmagnetic developer roll is replaced with the magnetic developer roll, and use the magnetic carbon dust.Because the magnetic developer roll can apply magnetic force and be adsorbed to its surface in the magnetic carbon dust and with the magnetic carbon dust, therefore greatly strengthened the control of developer roll to carbon dust, thereby avoided the powder defective of wafing of cartridge, eliminated the pollution of carbon dust to cartridge and electrophotographic image forming, improved image quality.

In a concrete scheme, powder outlet cutter is the metal doctor cutter, and the metal doctor cutter is replaced with the PU powder outlet cutter.Because what the cartridge before the repacking used is the metal doctor cutter, so carbon dust easily adheres on the metal doctor cutter, causes image the defective of vertical lines to occur.Be the PU powder outlet cutter and the cartridge after the repacking uses, because carbon dust is not easy to stick on the PU powder outlet cutter, image is not prone to the problem of vertical line bar when therefore using the cartridge imaging after the repacking, has improved image quality.

In another concrete scheme, also comprise removing powder feeding roller.Because the magnetic developer roll can apply magnetic force and be adsorbed to its surface in the magnetic carbon dust and with the magnetic carbon dust, therefore the cartridge after the repacking need not to use powder feeding roller to carry out powder feeding, but this economical with materials, and the cost of reduction cartridge.

Description of drawings

Fig. 1 is the inner structure schematic diagram of the front great-jump-forward development cartridge of repacking among the embodiment one;

Fig. 2 is the inner structure schematic diagram of the rear great-jump-forward development cartridge of repacking among the embodiment one.

Embodiment

Embodiment one

As shown in Figure 1, the jump type developing cartridge before the repacking comprises powder storehouse 1 and waste powder hopper 2.Powder storehouse 1 has the powder storehouse housing 10 that limits powder storing chamber 11 and development chamber 12, and puddle support 13 is arranged in the powder storing chamber 11, and it can rotate under external force drives and be delivered to development chamber 12 with the non magnetic carbon dust (not shown) with powder storing chamber 11 interior storages.Powder feeding roller 14, developer roll 15 and metal doctor cutter 16 are arranged in the development chamber 12, wherein, what developer roll 15 adopted is non-magnetic metal developing roller, carbon dust is provided on the developer roll 15 by the rotation of powder feeding roller 14, at this moment, carbon dust triboelectric charging between powder feeding roller 14 and developer roll 15, developer roll 15 is adsorbed on its surface by the adhesion of Electrostatic Absorption effect and carbon dust self with carbon dust.Subsequently, the carbon dust on the developer roll 15 is keeping forming uniform carbon dust thin layer under the effect of metal doctor cutter 16 of Elastic Contact with developer roll 15.Among the present invention, the part that metal doctor cutter 16 fingers contact with developer roll 15 at least is the powder outlet cutter that is formed by preparation of metals.

Waste powder hopper 2 comprises waste powder hopper framework 20, photosensitive drums 21, charging roller 22 and cleaning doctor 23, wherein, photosensitive drums 21 is faced with certain gap mutually with developer roll 15, for keeping the reasonable clearance between the two, is provided with the spacer sleeve (not shown) between the two.Gap portion between photosensitive drums 21 and the developer roll 15 is formed with developing regional 3.The carbon dust thin layer turns to developing regional 3 under the drive of developer roll 15, and arrives photosensitive drums 21 under the effect of development bias voltage.

Fig. 2 is the inner structure schematic diagram of great-jump-forward development cartridge after the repacking.In conjunction with illustrated in figures 1 and 2, the present invention comprises the method for modifying of above-mentioned jump type developing cartridge:

Nonmagnetic developer roll 15 is replaced by magnetic developer roll 15 '.

The cleaning powder storing chamber 11, and to the cleaning after powder storing chamber 11 interior can magnetic carbon dust (not shown)s.

Metal doctor cutter 16 is replaced by polyurethane (PU) powder outlet cutter 16 '.In the present invention, PU powder outlet cutter 16 ' refers to that the part that contacts with magnetic developer roll 15 ' at least is the powder outlet cutter that is prepared from by PU.

Remove powder feeding roller 14.

One of ordinary skill in the art will readily recognize that in the situation that cartridge exists other parts such as pollution and photosensitive drums 21 to have damage, also need cartridge is cleaned and change the parts that other have damaged.

When nonmagnetic developer roll 15 being replaced by magnetic developer roll 15 ', owing to needing the magnetic core 151 of fixed magnetic developer roll 15 ', therefore need to after repacking, one magnetic core, 151 fixed sturctures be set the end cap (not shown) of cartridge, prevent that magnetic core 151 from rotating.Common magnetic core 151 fixed sturctures are to form a D shape hole (not shown) that is complementary with the D oblique crank Z end (not shown) of magnetic core 151 at end cap, D shape hole can be before repacking directly forms on the end cap of cartridge, also the end cap of cartridge before the repacking can be replaced by a new end cap that is provided with D shape hole.Simultaneously, in order to keep the reasonable clearance between magnetic developer roll 15 ' and the photosensitive drums 21, magnetic roller sheath (not shown) also should be set at the two ends of magnetic developer roll 15 ', to be arranged on the spacer sleeve between photosensitive drums 21 and the nonmagnetic developer roll 15 before the replacement repacking.

What the cartridge after the repacking used is magnetic developer roll 15 ', if the powder storing chamber 11 interior remaining non magnetic carbon dusts that have, to cause it to produce image defects, therefore before powder storing chamber 11 interior adding magnetic carbon dusts, should remove the non magnetic carbon dust of residue in the powder storing chamber 11.Can carry out with various known methods to described powder storing chamber 11 interior can magnetic carbon dusts, for example, in the situation that powder storehouse 1 is provided with flour feeding hole, can be directly from flour feeding hole can magnetic carbon dust; In the situation that be not provided with flour feeding hole on the powder storehouse 1, can offer flour feeding hole at the powder storehouse housing 10 that links to each other with powder storing chamber 11 and add powder.

It all is apparent with the method for operating that removes powder feeding roller 14 to those skilled in the art that metal doctor cutter 16 is replaced by polyurethane (PU) powder outlet cutter 16 ', the structure of PU powder outlet cutter 16 ' also is those skilled in the art's common practise, therefore do not elaborate at this.

Embodiment two

Below only the difference of the present embodiment and embodiment one is described.

What in the present embodiment, great-jump-forward development cartridge used before the repacking is exactly the PU powder outlet cutter.Correspondingly, when great-jump-forward development cartridge is reequiped, as long as no damage occurred for former PU powder outlet cutter, just need not it is replaced by new PU powder outlet cutter.

Claims (3)

1. the method for modifying of jump type developing cartridge, described cartridge comprise waste powder hopper and have the powder storehouse of powder storing chamber, and described powder is provided with powder feeding roller, nonmagnetic developer roll and powder outlet cutter in the storehouse, is provided with photosensitive drums in the described waste powder hopper, and described method of modifying comprises:
Described nonmagnetic developer roll is replaced by the magnetic developer roll;
Clean described powder storing chamber, and to the cleaning after described powder storing chamber in can magnetic carbon dust.
2. method of modifying as claimed in claim 1, wherein, described powder outlet cutter is the metal doctor cutter, it is characterized in that:
Also comprise described metal doctor cutter is replaced by the PU powder outlet cutter.
3. method of modifying as claimed in claim 1 is characterized in that:
Also comprise and remove described powder feeding roller.
CN2012103904969A 2012-10-15 2012-10-15 Method for modifying jumping type developing carbon powder box CN102914956A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012103904969A CN102914956A (en) 2012-10-15 2012-10-15 Method for modifying jumping type developing carbon powder box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012103904969A CN102914956A (en) 2012-10-15 2012-10-15 Method for modifying jumping type developing carbon powder box

Publications (1)

Publication Number Publication Date
CN102914956A true CN102914956A (en) 2013-02-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104503212A (en) * 2014-12-31 2015-04-08 珠海展望打印耗材有限公司 Assembling method for jumping-type developing ink box

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1201918A (en) * 1997-03-11 1998-12-16 佳能株式会社 Toner for developing electrostic images, and image-forming method
CN1629743A (en) * 2003-12-15 2005-06-22 佳能株式会社 Developing device
CN1629745A (en) * 2003-12-15 2005-06-22 佳能株式会社 Image forming apparatus
CN201402372Y (en) * 2009-03-27 2010-02-10 珠海天威飞马打印耗材有限公司 Processing box

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1201918A (en) * 1997-03-11 1998-12-16 佳能株式会社 Toner for developing electrostic images, and image-forming method
CN1629743A (en) * 2003-12-15 2005-06-22 佳能株式会社 Developing device
CN1629745A (en) * 2003-12-15 2005-06-22 佳能株式会社 Image forming apparatus
CN201402372Y (en) * 2009-03-27 2010-02-10 珠海天威飞马打印耗材有限公司 Processing box

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104503212A (en) * 2014-12-31 2015-04-08 珠海展望打印耗材有限公司 Assembling method for jumping-type developing ink box

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Application publication date: 20130206