US3884572A - Cleaning apparatus - Google Patents

Cleaning apparatus Download PDF

Info

Publication number
US3884572A
US3884572A US317974A US31797472A US3884572A US 3884572 A US3884572 A US 3884572A US 317974 A US317974 A US 317974A US 31797472 A US31797472 A US 31797472A US 3884572 A US3884572 A US 3884572A
Authority
US
United States
Prior art keywords
toner
plate
toner particles
wiper
electrostatic
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 - Lifetime
Application number
US317974A
Other languages
English (en)
Inventor
James L Bacon
Henry W Simpson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Priority to US317974A priority Critical patent/US3884572A/en
Priority to IT30203/73A priority patent/IT995927B/it
Priority to NL7314990A priority patent/NL7314990A/xx
Priority to FR7340559A priority patent/FR2211685B1/fr
Priority to BR8948/73A priority patent/BR7308948D0/pt
Priority to BE137999A priority patent/BE807608A/xx
Priority to JP48132263A priority patent/JPS4991651A/ja
Priority to SE7316065A priority patent/SE387448B/xx
Priority to CA187,406A priority patent/CA1033405A/en
Priority to GB5680773A priority patent/GB1411198A/en
Priority to DE2362097A priority patent/DE2362097A1/de
Priority to CH1768773A priority patent/CH558555A/xx
Priority to ES421761A priority patent/ES421761A1/es
Application granted granted Critical
Publication of US3884572A publication Critical patent/US3884572A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
    • G03G21/0058—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a roller or a polygonal rotating cleaning member; Details thereof, e.g. surface structure

Definitions

  • ABSTRACT A cleaning apparatus for cleaning the residual toner image from an electrostatic plate of an electrostatic reproduction apparatus incorporates a continuous wiper member having an outer layer of a compliant material which has a resistivity of less than 10*" ohm.- centimeters and an outer skin thereon.
  • the wiper member is connected to ground.
  • the wiper member wipingly engages the toner particles the toner partricles are mechanically dislodged from the surface of the electrostatic plate.
  • an image charge is produced on the outer skin surface of the conductive wiper member equal to but opposite in sign from the charge on the toner particles in proximity therewith.
  • This image charge causes the toner particles to adhere to the skin surface as the wiper member moves away from the electrostatic plate regardless of the sign of the toner charge.
  • a further cleaning member is utilized to remove the toner particles from the skin surface of the wiper member which travels in a closed loop past the electrostatic plate and the further cleaning member.
  • This invention relates to the cleaning of toned electrostatic images on a plate and, more particularly, to an improved compliant wiper cleaning apparatus.
  • an electrostatic plate bearing a latent electrostatic image is developed by applying a developer material including charged electroscopic toner particles to the plate.
  • the charged toner is selectively attracted to the image areas on the plate and is electrostatically maintained thereon.
  • the toned image is thereafter transferred to a support surface such as paper and thereafter permanently affixed to the support surface.
  • Transfer of the toner particles from the image area on the plate to the support surface is often effected by a corona generating device which imparts an electrostatic charge to attract the toner particles from the plate to the support surface.
  • Other transfer techniques such as pressure transfer and heat transfer are also utilized.
  • a residual toner image usually remains on the plate after transfer which must be cleaned therefrom before the plate may be reused for subsequent imaging.
  • the brush-type cleaning devices usually comprise one or more rotating brushes which brush the toner powder from the plate into a stream of air which is exhausted through a filtering system.
  • a knockoff bar or similar apparatus is utilized in conjunction with the rotating brush to free' the toner particles from the brush thus maintaining the brush operable over a number of cycles.
  • a further prior art approach has suggested the utilization of a cleaning roller made of a resilient or elastic material such as natural or synthetic rubber or sponge which is mechanically biased in compressed rolling contact against the electrostatic plate.
  • the rubber roller is continuously cleaned by a brush which dislodges toner particles therefrom at a postion that is not adjacent the plate. While such a roller provides excellent cleaning characteristics over a relatively few number of reproduction cycles while operating at relatively low processing speeds, it soon becomes clogged with toner particles and is no longer effective in removing toner from the plate. Further, the device relies upon the mechanical scrubbing action to effect the cleaning operation. This action is often not great enough to dislodge highly charged toner particles from the electrostatic plate and to carry the toner particles away therefrom to a point whereat the toner particles may be readily removed from the roller.
  • a continuous wiper cleaning member having an outer layer of compliant material which has a resistivity of less than l0 ohm centimeters and an outer skin thereon is utilized to wipingly engage the electrostatic plate in compressed rolling contact therewith to remove toner therefrom.
  • the conductive material is connected to a current source such as ground, thereby allowing an image charge to be produced on the outer skin surface of the wiper member which is opposite in sign but equal in magnitude to the charge on the toner particles in proximity therewith.
  • toner particles of either polarity of charge may be simultaneously cleaned from the plate.
  • the image charge causes the toner particles to adhere to the wiper surface as it moves away from the electrostatic plate.
  • the toner particles may thereafter be readily cleaned from the outer skin surface of the wiper member since the toner particles are not deeply entrained therein. Therefore, the wiper member remains relatively free of trapped toner particles and can be readily reused over numerous cycles of operation.
  • the low resistivity of the outer skin enables high processing speeds since the requisite image charge is rapidly produced.
  • a further benefit that is obtained by utilizing a conductive cleaning roller is that the photoconductive surface is completely discharged thereby. Such uniform 3 discharge of the photoconductor eliminates the need for a post clean erase lamp in the system.
  • a still further object of this invention is to provide a cleaning member for cleaning toner from an electrostatic plate which itself can be readily purged of toner thereon.
  • FIG. 1 is a schematic illustration of a conventional electrostatic reproduction apparatus incorporating the cleaning apparatus of the present invention.
  • FIG. 2 is a three-dimensional schematic illustration of the wiper member of the cleaning apparatus of the present invention.
  • FIG. 3 is a schematic illustration depicting the physical parameters of the cleaning apparatus of the present invention.
  • FIG. 4 is a schematic illustration of an alternate wiper member for use with the cleaning apparatus of the present invention.
  • FIG. 1 a schematic illustration of a conventional electrostatic reproduction apparatus incorporating the cleaning apparatus of the present invention is depicted.
  • the reproduction apparatus comprises a plurality of processing stations located about a cylindrically shaped electrostatic photosensitive plate 11.
  • the cylindrical plate comprises a layer of photoconductive material superimposed over a conductive non-magnetic backing layer.
  • a suitable photoconductive material is disclosed in U.S. Pat No. 3,484,237, issued Dec. 16, 1969.
  • the backing layer can comprise a substrate made of an insulating material sprayed with aluminum, the aluminum providing a requisite conduction path to ground.
  • the photoconductive material is sensitized by a charge corona 13 as the plate rotates therepast in the direction of arrow 15.
  • a light image of the copy 17 to be reproduced is projected onto the sensitized surface of the electrostatic photosensitive plate 11 rotating thereunder to form an electrostatic latent image thereon.
  • the rotating plate thereafter passes a magnetic brush developing station 19 whereat multiple component developer material including electrostatically charged toner is applied to the surface of the electrostatic photosensitive plate 11 containing the electrostatic latent image thereon.
  • the charged toner particles are preferentially attracted to the latent image on the the surface of the plate and then past a pre-clean lamp 26 which discharges the photoconducitve surface.
  • the plate rotates past the cleaning station plate 11 and are subsequently transferred to a support
  • the plate 11 continues to rotate past a pre-clean co- 7 rona 25 which charges the residual'toner particles on 27 which removes the residual toner from the surface of the plate prior to the arrival of the plate at the charge corona 13.
  • charge corona 13 applies a uniform negative charge to i the plate 11.
  • light emanating from the ligher areas of the copy 17 discharges the photoconductor so that a negative charge pattern corresponding to the dark areas on the copy 17 remains on the plate 11 as it rotates toward the magnetic brush developing station 19.
  • the magnetic brush developing station 19 is continuously operable and contains a multi-component developer material which is applied to the plate 11 as it rotates therepast.
  • the principle components of the developer material are electroscopic toner and aferromagnetic carrier material.
  • Suitable materials for use as toners are well known in the art and generally comprise finely divided resinous materials capable of being attracted and held by electrical charges. Examples of toners which can be employed are commercially marketed by the International Business Machines Corporation as IBM part no. 1162057 and IBM part no. 1162051. The IBM part no.
  • 1162057 toner comprises a copolymer of styrene/n-butylmethacrylate resin, maleic anahydride modified polyester, polyvinyl stearate plasticizer, and carbon black pigment.
  • the IBM part no. 1 162051 toner comprises a copolymer of nbutymethacrylate/methymethacrylate resin, maleic anahydride modified polyester, polyvinyl butyral plasticizer, carbon black pigment, and a fumed silica physically mixed in the toner after compounding.
  • ferromagnetic carrier materials can be utilized, the carrier particles generally being between 50 and 1,000 microns in size.
  • the carrier particles are manufactured by coating a ferromagnetic core or bead with a material which triboelectrically interacts with the selected toner to produce a desired charge on the toner in order to provide good imaging quality.
  • An example of such a carrier and the method by which it can be made to obtain a desired triboelectric characteristic for any selected toner is dis- 7 closed in the aforereferenced copending application of William J. Kukla, et al.
  • the toned image leaving the magnetic brush developing station 19 is transferred to a support surface 21.
  • the transfer corona creates an electrostatic charge on the support surface causing the toner to be preferentially attracted thereto from the surface of the electrostatic photosensitive plate v11. Since the toner is triboelectrically charged positive, the
  • transfer corona 23 applies a negative charge to the support surface 21 causing the toner to be attracted thereto.
  • the cleaning apparatus removes toner which has been charged to either sign (e.g., positively and negatively charged toner).
  • the pre-clean corona 25 can be an AC corona thereby charging the toner to both polarities, a positive corona which tends to enhance the positive triboelectric charge on the toner or a negative corona which, in conjunction with the transfer corona 23, tends to cause the majority of the toner particles to be charged negatively. It has been found that the most satisfactory results occur with a negative pre-clean corona.
  • the pre-clean lamp 26 illuminates the plate 11 thereby discharging electrostatic charges existing on the plate 11 which might otherwise tend to attract toner thereto.
  • the residual toned image thereafter passes cleaning station 27.
  • the cleaning station 27 comprises a wiper roller 31 for removing toner particles from the plate 11.
  • the wiper roller 31 is mounted for rotation in the direction of arrow 33 at a surface velocity between 6 and inches per second when the plate 1 1 rotates at a surface speed of 9.3 inches a second.
  • the wiper roller 31 is approximately 3 inches in diameter and is biased into the plate 11 for wiping engagement therewith.
  • the wiper roller 31 is shown in detail in FIG. 2 and comprises an outer layer 35 of a conductive compliant elastomer material.
  • a suitable elastomer material is a silicone rubber produced by the Ames Rubber Company having formulation number ARX5424 which is a silicone rubber having conductive carbon particles embedded therein, the carbon particles comprising 26 to 41 percent by weight of the material.
  • Other elastomer materials such as conductive neophrene, conductive urathane, or conductive ethylene propylene terpolymer have also been successively utilized.
  • the outer skin of the conductive silicone rubber material has a compliance as measured on a Shore A2 scale of 60 or softer, a resistivity of 10* ohm.- centimeters and a surface smoothness having an average height asperity of 200 micro inches.
  • the wiper roller 31 further comprises a conductive metallic core 37 made of materials such as aluminum or hardened steel.
  • a non-conductive plastic roller could also be utilized.
  • a compliant material layer 39 comprising a foam material such as conductive neophrene or urathane foam is mounted on the core 37 and provides additional cushioning to compensate for mechanical tolerance variations between the wiper roller 31 and the plate 11 and insures an adequate sized cleaning footprint 40.
  • the wiper roller 31 is engaged by a scavenge roller 41 which removes toner particles from the wiper roller 31.
  • the scavenge roller 41 is in turn scraped by a knife blade 43 which removes the toner particles to the lower portion of the cleaning station 27 whereat they are removed by the continuously rotating auger 45.
  • the scavenge roller 41 may be a conductive smooth roller as depicted in FIG. 1 or a roller which is made of an insulator material such as nylon which triboelectrically interacts with the toner particles on the wiper roller 31 to effect removal there-0f.
  • the scavenge roller 41 is a conductive steel roller which is grounded at current source 47. The current source 47 is thereby connected through the scavenge roller 41 to the outer skin of the wiper roller 31.
  • toner particles 51, 52 having a charge of either polarity are located on the surface of the plate 11 as it rotates in the direction of arrow 15 toward the wiper roller 31.
  • the toner particles are retained on the surface of the plate 11 by adhesion forces and, to a lesser extent, by electrostatic forces.
  • the adhesion forces are greater than the electrostatic forces since these forces prevented the toner from transferring at the transfer station.
  • the adhesion forces causing the toner particles to remain on the plate 11 are mechanically overcome thereby causing the toner particles to become dislodged from the plate 11.
  • an image charge is produced at the surface of the outer layer 35 equal in magnitude but opposite in sign to the charge on the toner particles.
  • the image charge is produced by the current which flows from the current source 47 through the scavenge roller 41 and through the conductive outer layer 35 to that area of the surface adjacent the charged toner particle.
  • the toner particles tend to move with wiper roller 31 in the direction of arrow 33. Further, since the adhesion forces are mechanically broken, the image charge on the outer surface of the wiper roller 31 acts on the toner particles thereby causing the toner particles to adhere to the outer skin of the outer layer.35 as it rotates away from contact with the plate 1 1.
  • An image charge is produced on the surface of the scavenge roller in a manner analogous to the production of the image charge on the wiper roller 31 as previously described which causes the toner particles to remain on the surface thereof until they are mechanically dislodged by the knife blade 43 as the scavenge roller 41 rotates therepast in the direction of arrow 61.
  • the coefficient of friction of the outer surfaces of the plate 11, the wiper roller 31, and the scavenge roller 41 are chosen so that there is a greater coefficient of friction between the toner particles and the wiper roller 31 than between the toner particles and the surface of the plate 11. Further, there is a greater coefficient of friction between the surface of may be sized by controlling the smoothness of the respective rollers.
  • a non-conductive scavenge roller 41 can be' utilized in lieu of a conductive roller, the requisite current source connection to the wiper roller 31 being made directly from the current source 47 to the roller 31.
  • insulator materials such as nylon are utilized for the scavenge roller 41
  • the nylon material triboelectrically charges the toner particles located on the surface of the wiper roll 31 as these toner particles progress into the nip between the rolls 41 and 31.
  • the triboelectric charge created at the surface of nylon roll provides a slightly stronger force than the image charge discussed with respect to a conductive roll thereby facilitating removal of the toner particles from the wiper roll 31.
  • the cleaning station 27 comprises two mandrels, 71, 73, over which a belt 75 of wiper material is mounted.
  • the belt 75 can comprise a single layer of conductive'elastomer material such as silicone rubber.
  • The'be'lt 75 is mounted for movement in the direction of arrow 77 and wipirigly engages toner particles located on the surface of the plate 11 as it moves into contact therewith. The wiping engagement of the compliant layer mechanically dislodges the toner particles.
  • the mandrel 71 is connected to ground thereby providing a current to the outer skin of the belt 75 to create an image charge equal to but opposite in sign from the charge of the toner particles in proximity thereto.
  • the image charge causes the toner particles to be retained on the outer skin of the belt 75 as it rotates away from the plate 11 toward the knife blade 43.
  • the knife blade 43 wipes directly against the belt 75 scraping toner therefrom into the continuously moving auger 45.
  • the resistivity of the outer layer 35 of the wiper roller 31 that is required to achieve satisfactory cleaning results is dependant upon the processing speed of the apparatus. This is because the re sistivity of the outer layer must be sufficiently low to enable a current to flow rapidly therethrough to create the requisite image charge on that portion of the surface thereof in proximity with a charged toner particle before that portion of the surface rotates away from the plate 11. An increase in processing speed produces a corresponding decrease in the time that a given portion of the outer layer 35 contacts the plate 11. Thus, increased processing speeds require a corresponding decrease in resistivity.
  • the radius of an average toner particle is 5 microns
  • the outer layer 35 of the wiper roller 31 consisted of a porous neophrene layer of material approximately 0.062 inches thick having a resistivity of 10 to 10 ohm. centimeters. Failure of the wiper roller to remove toner from the rotating plate 11 without smearing occurred within 1,000 cycles of operation. Thereafter, the wiper roller 31 was replaced with a wiper roller 31 having an outer layer 35 consisting of a porous neophrene layer approximately 0.062
  • a ground potential current source 47 may be connected to the wiper roller 31 in order to cleanthe plate 11 of toner which is charged to either polarity.
  • a current source 47 having a relatively low DC. potential e.g., 10 to 50 volts may be utilized when it is desirous to clean toner which is substantially charged to a polarity opposite the polarity of the supply.
  • An added benefit obtained by utilizing a conductive cleaning member is the complete discharge of the photoconductive plate 11 effected thereby.
  • Previous cleaning devices which mechanically dislodged toner particles from the plate left the plate with an electrostatic charge thereon at the location whereat the toner particle was attached thereto. This charge often had to be eliminated with a post-clean erase lamp
  • Such plate charges are eliminated by providing a conductive path to the photoconductor with the conductive cleaning roller after the toner particle has been removed therefrom. Thus continued motion of the plate 11 past the cleaning roller causes electrostatic charges on the plate to become neutralized.
  • Cleaning apparatus for removing electrostatically charged toner particles from the surface of an electrostatic plate comprising: 7
  • a continuous wiper means mounted for movement in a closed loop in wiping engagement with the surface of the electrostatic plate containing toner particles attracted thereto for removing said toner particles from said electrostatic plate, said wiper means comprising at least an outer layer of a compliant material having a resistivity of less than l0 ohm. centimeters and having an outer skin thereon;
  • a current source connected to said wiper means for supplying current to the outer skin of said, wiper means proportional to the image charge of the toner in contact therewith.
  • the cleaning apparatus set forth in claim 4 further comprising a preclean corona unit for electrostatically charging said toner on said plate prior to said toner being engaged by said wiper means toward a polarity opposite its polarity established when applied to the plate.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cleaning In Electrography (AREA)
  • Cleaning In General (AREA)
US317974A 1972-12-26 1972-12-26 Cleaning apparatus Expired - Lifetime US3884572A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US317974A US3884572A (en) 1972-12-26 1972-12-26 Cleaning apparatus
IT30203/73A IT995927B (it) 1972-12-26 1973-10-17 Apparecchiatura di pulitura per togliere particelle di toner cari cate elettrostaticamente dalla superficie di una piastra elettro statica
NL7314990A NL7314990A (xx) 1972-12-26 1973-11-01
FR7340559A FR2211685B1 (xx) 1972-12-26 1973-11-06
BR8948/73A BR7308948D0 (pt) 1972-12-26 1973-11-14 Aperfeicoamentos em processo e aparelho de limpeza para remover particulas de virador eletrostaticamente carregadas de superficie de uma placa eletrostatica
BE137999A BE807608A (fr) 1972-12-26 1973-11-21 Dispositif de nettoyage de plaque photoconductrice dans un copieur electrostatique
JP48132263A JPS4991651A (xx) 1972-12-26 1973-11-27
SE7316065A SE387448B (sv) 1972-12-26 1973-11-28 Rengoringsanordning for avlegsnande av elektrostatiskt laddade pigmentpartiklar fran ytan pa elektrostatisk plat
CA187,406A CA1033405A (en) 1972-12-26 1973-12-05 Cleaning apparatus
GB5680773A GB1411198A (en) 1972-12-26 1973-12-07 Apparatus for removing electrostatically charged particles from a surface
DE2362097A DE2362097A1 (de) 1972-12-26 1973-12-14 Elastische reinigungsvorrichtung fuer ueberschuessigen toner
CH1768773A CH558555A (de) 1972-12-26 1973-12-18 Elastische reinigungsvorrichtung fuer ueberschuessigen toner.
ES421761A ES421761A1 (es) 1972-12-26 1973-12-24 Aparato limpiador para eliminar particulas de material vi- rador cargadas electrostaticamente de la superficie de una placa electrostatica.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US317974A US3884572A (en) 1972-12-26 1972-12-26 Cleaning apparatus

Publications (1)

Publication Number Publication Date
US3884572A true US3884572A (en) 1975-05-20

Family

ID=23236079

Family Applications (1)

Application Number Title Priority Date Filing Date
US317974A Expired - Lifetime US3884572A (en) 1972-12-26 1972-12-26 Cleaning apparatus

Country Status (13)

Country Link
US (1) US3884572A (xx)
JP (1) JPS4991651A (xx)
BE (1) BE807608A (xx)
BR (1) BR7308948D0 (xx)
CA (1) CA1033405A (xx)
CH (1) CH558555A (xx)
DE (1) DE2362097A1 (xx)
ES (1) ES421761A1 (xx)
FR (1) FR2211685B1 (xx)
GB (1) GB1411198A (xx)
IT (1) IT995927B (xx)
NL (1) NL7314990A (xx)
SE (1) SE387448B (xx)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950089A (en) * 1975-02-24 1976-04-13 Xerox Corporation Coated roll for magnetic brush development and cleaning systems
US4006987A (en) * 1973-11-12 1977-02-08 Konishiroku Photo Industry Co., Ltd. Apparatus for cleaning a residual toner on an electrostatic recording medium
US4018555A (en) * 1975-09-24 1977-04-19 Xerox Corporation Cleaning apparatus for roll fuser
JPS5265450A (en) * 1975-11-26 1977-05-30 Ricoh Co Ltd Method and apparatus for removing electricity for cleaning means of li ght sensitive body
US4063811A (en) * 1975-04-11 1977-12-20 Minolta Camera Kabushiki Kaisha Electrophotographic copier
US4101215A (en) * 1975-12-20 1978-07-18 Agfa-Gevaert A.G. Cleaning device for an electrostatic copier
US4133610A (en) * 1977-12-30 1979-01-09 International Business Machines Corporation Optimum preclean corona current for eliminating the accumulation of contaminants from developers
US4140389A (en) * 1976-03-27 1979-02-20 Agfa-Gevaert Ag Toner removing apparatus
US4233386A (en) * 1977-09-19 1980-11-11 Mita Industrial Co., Ltd. Method of removing residual toner from surface of photoconductive member for use in electrostatic copying apparatus of the transfer type
US4253761A (en) * 1976-04-17 1981-03-03 Kabushiki-Kaisha Kip Cleaning devices for use in electrophotographic apparatus
US4259003A (en) * 1979-08-06 1981-03-31 Savin Corporation Imaging surface discharge and cleaning apparatus for electrophotographic copier
US4260238A (en) * 1978-06-24 1981-04-07 Mita Industrial Co., Ltd. Transfer type electrostatic copying apparatus
US4398820A (en) * 1981-05-18 1983-08-16 Xerox Corporation Cleaning system
US4439035A (en) * 1978-11-09 1984-03-27 Savin Corporation Copier cleaning system incorporating resilient noncellular sealing roller
US4733268A (en) * 1986-05-09 1988-03-22 International Business Machines Corporation Voltage control bar for electrophotography
US4786943A (en) * 1987-04-01 1988-11-22 Kentek Information Systems, Inc. Device for removing residual developer particles from a photoconductive member
US5678134A (en) * 1995-03-31 1997-10-14 Olympus Optical Co., Ltd. Cleaning device for an image forming apparatus
US6317578B1 (en) * 1999-10-14 2001-11-13 Nec Corporation Wet-type image forming device and cleaning apparatus
US20030185588A1 (en) * 2002-03-29 2003-10-02 Brother Kogyo Kabushiki Kaisha Process unit and image forming apparatus
US20080170878A1 (en) * 2007-01-10 2008-07-17 Yasuyuki Yamashita Cleaning device, process cartridge, and image forming apparatus
US8218997B2 (en) * 2008-05-30 2012-07-10 Ricoh Company, Ltd. Cleaning member, charging device, process cartridge, and image forming apparatus
CN110420925A (zh) * 2019-07-31 2019-11-08 吴江南玻玻璃有限公司 一种镀膜玻璃用胶辊表面清洁装置和使用方法
CN111389817A (zh) * 2020-03-24 2020-07-10 杭州新汉杰科技有限公司 一种纺织面料用中和负电荷的高效去绒毛辅助装置
CN114412843A (zh) * 2022-02-19 2022-04-29 广东康美风通风设备有限公司 一种箱式风机

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5630868B2 (xx) * 1973-05-14 1981-07-17
JPS54156548A (en) * 1978-05-30 1979-12-10 Ricoh Co Ltd Roller for electrophotographic copier
JPS5533931A (en) * 1978-08-30 1980-03-10 Canon Inc Elastic roller
US4392742A (en) * 1978-11-09 1983-07-12 Savin Corporation Liquid developer copier cleaning system incorporating resilient closed-cell cleaning roller
JPS55126272A (en) * 1979-03-23 1980-09-29 Ricoh Co Ltd Cleaning device of residual toner
US4286039A (en) * 1979-05-15 1981-08-25 Savin Corporation Method and apparatus for removing excess developing liquid from photoconductive surfaces
JPS56151976A (en) * 1980-04-26 1981-11-25 Ricoh Co Ltd Cleaning device for two color electrophotographic copying machine
JPS58142367A (ja) * 1982-02-17 1983-08-24 Konishiroku Photo Ind Co Ltd ロ−ラクリ−ニング装置
JPS5978378A (ja) * 1982-10-27 1984-05-07 Konishiroku Photo Ind Co Ltd 中間転写ローラを用いた記録装置
JPS62168190A (ja) * 1987-01-23 1987-07-24 Toshiba Corp クリ−ニング装置
JPS62168191A (ja) * 1987-01-23 1987-07-24 Toshiba Corp クリ−ニング装置
JPH0240683A (ja) * 1988-07-30 1990-02-09 Toshiba Corp クリーニング装置、転写装置、帯電装置、除電装置及び静電潜像形成装置
DE10125325B4 (de) * 2001-05-23 2004-02-12 OCé PRINTING SYSTEMS GMBH Einrichtung zur Entfernung eines auf der Oberfläche eines Zwischenträgers haftenden Belags bei einem elektrofotografischen Druck-oder Kopiergerät
SE531394C2 (sv) 2005-08-30 2009-03-17 Mattssonfoeretagen I Uddevalla Ab Anordning och metod för bestrykning
DE102009024600B4 (de) 2009-06-10 2015-08-20 Océ Printing Systems GmbH & Co. KG Verfahren und Vorrichtung zum Übertragen einer Menge elektrisch geladener Tonerteilchen zwischen mindestens zwei Tonerträgern
GB2574179B (en) * 2018-03-12 2021-06-30 Illinois Tool Works Contact cleaning surface assembly

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752271A (en) * 1955-10-05 1956-06-26 Haloid Co Electrostatic cleaning of xerographic plates
US3438706A (en) * 1966-10-07 1969-04-15 Canon Kk Electrophotographic device
US3580673A (en) * 1968-08-26 1971-05-25 Xerox Corp Cleaning apparatus
US3634077A (en) * 1968-08-26 1972-01-11 Xerox Corp Method and apparatus for removing a residual image in an electrostatic copying system
US3655373A (en) * 1968-08-26 1972-04-11 Xerox Corp Cleaning method for electrostatic copying machines
US3728016A (en) * 1971-12-22 1973-04-17 Ibm Cleaning apparatus for electrostatic copy devices
US3781105A (en) * 1972-11-24 1973-12-25 Xerox Corp Constant current biasing transfer system

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752271A (en) * 1955-10-05 1956-06-26 Haloid Co Electrostatic cleaning of xerographic plates
US3438706A (en) * 1966-10-07 1969-04-15 Canon Kk Electrophotographic device
US3580673A (en) * 1968-08-26 1971-05-25 Xerox Corp Cleaning apparatus
US3634077A (en) * 1968-08-26 1972-01-11 Xerox Corp Method and apparatus for removing a residual image in an electrostatic copying system
US3655373A (en) * 1968-08-26 1972-04-11 Xerox Corp Cleaning method for electrostatic copying machines
US3728016A (en) * 1971-12-22 1973-04-17 Ibm Cleaning apparatus for electrostatic copy devices
US3781105A (en) * 1972-11-24 1973-12-25 Xerox Corp Constant current biasing transfer system

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006987A (en) * 1973-11-12 1977-02-08 Konishiroku Photo Industry Co., Ltd. Apparatus for cleaning a residual toner on an electrostatic recording medium
US3950089A (en) * 1975-02-24 1976-04-13 Xerox Corporation Coated roll for magnetic brush development and cleaning systems
US4063811A (en) * 1975-04-11 1977-12-20 Minolta Camera Kabushiki Kaisha Electrophotographic copier
US4018555A (en) * 1975-09-24 1977-04-19 Xerox Corporation Cleaning apparatus for roll fuser
JPS5265450A (en) * 1975-11-26 1977-05-30 Ricoh Co Ltd Method and apparatus for removing electricity for cleaning means of li ght sensitive body
JPS5533075B2 (xx) * 1975-11-26 1980-08-28
US4101215A (en) * 1975-12-20 1978-07-18 Agfa-Gevaert A.G. Cleaning device for an electrostatic copier
US4140389A (en) * 1976-03-27 1979-02-20 Agfa-Gevaert Ag Toner removing apparatus
US4253761A (en) * 1976-04-17 1981-03-03 Kabushiki-Kaisha Kip Cleaning devices for use in electrophotographic apparatus
US4233386A (en) * 1977-09-19 1980-11-11 Mita Industrial Co., Ltd. Method of removing residual toner from surface of photoconductive member for use in electrostatic copying apparatus of the transfer type
US4133610A (en) * 1977-12-30 1979-01-09 International Business Machines Corporation Optimum preclean corona current for eliminating the accumulation of contaminants from developers
US4260238A (en) * 1978-06-24 1981-04-07 Mita Industrial Co., Ltd. Transfer type electrostatic copying apparatus
US4439035A (en) * 1978-11-09 1984-03-27 Savin Corporation Copier cleaning system incorporating resilient noncellular sealing roller
US4259003A (en) * 1979-08-06 1981-03-31 Savin Corporation Imaging surface discharge and cleaning apparatus for electrophotographic copier
US4398820A (en) * 1981-05-18 1983-08-16 Xerox Corporation Cleaning system
US4733268A (en) * 1986-05-09 1988-03-22 International Business Machines Corporation Voltage control bar for electrophotography
US4786943A (en) * 1987-04-01 1988-11-22 Kentek Information Systems, Inc. Device for removing residual developer particles from a photoconductive member
US5678134A (en) * 1995-03-31 1997-10-14 Olympus Optical Co., Ltd. Cleaning device for an image forming apparatus
US6317578B1 (en) * 1999-10-14 2001-11-13 Nec Corporation Wet-type image forming device and cleaning apparatus
US20030185588A1 (en) * 2002-03-29 2003-10-02 Brother Kogyo Kabushiki Kaisha Process unit and image forming apparatus
US6928252B2 (en) * 2002-03-29 2005-08-09 Brother Kogyo Kabushiki Kaisha Process unit and image forming apparatus having a structure to remove foreign matter
US20080170878A1 (en) * 2007-01-10 2008-07-17 Yasuyuki Yamashita Cleaning device, process cartridge, and image forming apparatus
US7873298B2 (en) * 2007-01-10 2011-01-18 Ricoh Company, Ltd. Cleaning device, process cartridge, and image forming apparatus
US8218997B2 (en) * 2008-05-30 2012-07-10 Ricoh Company, Ltd. Cleaning member, charging device, process cartridge, and image forming apparatus
CN110420925A (zh) * 2019-07-31 2019-11-08 吴江南玻玻璃有限公司 一种镀膜玻璃用胶辊表面清洁装置和使用方法
CN111389817A (zh) * 2020-03-24 2020-07-10 杭州新汉杰科技有限公司 一种纺织面料用中和负电荷的高效去绒毛辅助装置
CN114412843A (zh) * 2022-02-19 2022-04-29 广东康美风通风设备有限公司 一种箱式风机

Also Published As

Publication number Publication date
BR7308948D0 (pt) 1974-08-15
DE2362097A1 (de) 1974-07-11
SE387448B (sv) 1976-09-06
JPS4991651A (xx) 1974-09-02
BE807608A (fr) 1974-03-15
IT995927B (it) 1975-11-20
FR2211685A1 (xx) 1974-07-19
ES421761A1 (es) 1976-05-16
CA1033405A (en) 1978-06-20
FR2211685B1 (xx) 1977-06-03
NL7314990A (xx) 1974-06-28
GB1411198A (en) 1975-10-22
CH558555A (de) 1975-01-31

Similar Documents

Publication Publication Date Title
US3884572A (en) Cleaning apparatus
US3728016A (en) Cleaning apparatus for electrostatic copy devices
US3780391A (en) Apparatus for cleaning a residual image from a photosensitive member
EP0472401B1 (en) Apparatus for surface cleaning in electrophotographic imaging
US3634077A (en) Method and apparatus for removing a residual image in an electrostatic copying system
US4252433A (en) Method and apparatus for removing a residual image in an electrostatic copying system
US4875081A (en) Electrophotographic device having a.c. biased cleaning member
US2752271A (en) Electrostatic cleaning of xerographic plates
US3722018A (en) Cleaning apparatus
US3807853A (en) Electrophotographic cleaning apparatus
KR960011595A (ko) 화상형성장치 및 그에 사용되는 소제장치
CN1307488C (zh) 采用无载像构件清洁器的系统的成像设备
US3848994A (en) Line charge toner cleaning
EP0103405B1 (en) Toner removal apparatus
US3879785A (en) Cleaning apparatus
US5530537A (en) Biased foam roll cleaner
US4878093A (en) Dual roll cleaning apparatus for charge retentive surface
US4123154A (en) Combined corona generator and imaging surface cleaner
US4147541A (en) Electrostatic imaging member with acid lubricant
EP0264902A2 (en) Offset electrostatic imaging process
CN100401208C (zh) 转印装置和图像形成装置
US4630920A (en) Blade cleaning apparatus for removing residual toner from a charge retentive surface
JP2002082573A (ja) 画像形成装置
US3424615A (en) Method and apparatus for cleaning xerographic plates
US5597419A (en) Slow brush rotation in standby to avoid brush flat spots