US3807853A - Electrophotographic cleaning apparatus - Google Patents

Electrophotographic cleaning apparatus Download PDF

Info

Publication number
US3807853A
US3807853A US00279156A US27915672A US3807853A US 3807853 A US3807853 A US 3807853A US 00279156 A US00279156 A US 00279156A US 27915672 A US27915672 A US 27915672A US 3807853 A US3807853 A US 3807853A
Authority
US
United States
Prior art keywords
roller
cleaning
cellular
imaging surface
imaging
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
US00279156A
Other languages
English (en)
Inventor
F Hudson
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.)
Xerox Corp
Original Assignee
Xerox 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 Xerox Corp filed Critical Xerox Corp
Priority to US00279156A priority Critical patent/US3807853A/en
Priority to GB3700373A priority patent/GB1439229A/en
Priority to NL7310970A priority patent/NL7310970A/xx
Application granted granted Critical
Publication of US3807853A publication Critical patent/US3807853A/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

  • a cleaning device in the form of a roller and which includes a cellular surfaced material suitable for removal of marking material from an imaging surface.
  • the roller surface is positioned with its long axis transverse to the direction of movement of the imaging surface and transported over an area of sweeping engagement with the imaging surface.
  • the outer surface of the roller has a plurality of open cells which entrap the excess material on the imaging surface during the sweeping engagement thereof. After engagement, the roller is brought into proximity with a removal device for removing marking material from the surface cells.
  • the roller surface is a polyurethane foam which is driven by a suitable drive in sweeping engagement with the imaging surface.
  • An additional roller may be employed to increase the efficiency of cleaning.
  • This toner image may then be transferred to a support surface such as paper, and the transferred image may subsequently be permanently affixed to the support surface. After transfer, the residual toner remaining on the imaging surface is removed by a cleaning operation and the imaging surface may then be employed for another imaging cycle.
  • the electrostatographic imaging surface which may be in the form of a drum or belt, moves at high rates in timed unison relative to a plurality of processing stations. This rapid movement of the electrostatographic imaging surface has required vast amounts of toner to be used during development.
  • the difficulty in removing the residual toner image remaining on the imaging surface after transfer is the difficulty in removing the residual toner image remaining on the imaging surface after transfer.
  • the residual image is tightly retained on the photoconductive layer by a phenomenon that is not fully understood but believed to be caused by an electrical charge and Van der Waals forces that prevents complete transfer of the toner to the support surface, particularly in the image area.
  • the residual toner image is normally removed by cleaning devices such as a brush type cleaning apparatus or web type cleaning apparatus.
  • a typical brush cleaning apparatus is disclosed in U.S. Pat. No. 2,832,977 to L. E. Walkup et al. and in U.S. Pat. No. 2,91 1,330 to H. E. Clark.
  • the brush-type cleaning means usually comprises one or more rotating brushes which brush toner from the photoconductive surface into a stream of air which is exhausted'through a filtering system.
  • a typical web cleaning device which retains toner is disclosed in U.S. Pat. No. 3,186,838 to W. P. Graff, Jr. et al.
  • the cleaning operation can result in generation of heat resulting in physical and chemical changes in the toner.
  • an elaborate and noisy vacuum and filtering system is necessary to collect the re sidual toner particles removed by the brush.
  • large amounts of toner particles thrown into the air by the rapidly rotating brush cleaner often drift from the brush cleaning housing and form unwanted deposits on critical machine parts.
  • the web type cleaner has some advantages it is difficult to align with the surface of the electrostatographic imaging surface and uneven contact between the web and the surface as well as uneven takeup of the web on a takeup roll is often encountered even with complex alignment apparatus.
  • Another problem with the web type cleaner is that pressure contact between cleaning webs and some imaging surfaces must be kept to a minimum to prevent destruction of the imaging surface. I
  • a cleaning means in the form of a roller and which includes a cellular surfaced material suitable for removal of marking material from an imaging surface.
  • the roller surface is positioned with its long axis transverse to the direction of movement of the imaging surface and transported over an area of sweeping engagement with the imaging surface. After engagement, the roller is brought into proximity with a removal means for removing marking material from the surface cells.
  • the roller surface is a polyurethane foam which is driven by a suitable drive means in sweeping engagement with the imaging surface.
  • An additional roller may be employed to increase the efficiency of cleaning.
  • FIG. 1 is a partial schematic and cross-sectional side elevational view of a cleaning apparatus as employed in conjunction with a form of electrostatographic imaging machine;
  • FIG. 2 is a detail of the cleaning mechanism of FIG.
  • FIG. 3 is a perspective view of an alternative form of the cleaning mechanism of FIG. 1;
  • FIG. 4 shows a detail of FIG. 3.
  • FIGS. 1 and 2 wherein like numerals refer to like components in which the various system components are schematically illustrated.
  • a light image of copy to be reproduced is projected onto the charged surface of an electrostatographic plate to form an electrostatic latent image thereon.
  • the latent image is developed with an oppositely charged electroscopic developing material to form a powder image, corresponding to the latent image, on the plate surface.
  • the powder image can then be electrostatically transferred to a web of suitable transfer material in sheet form to which it may be fused by a fusing device, whereby the powder image is caused permanently to adhere to said transfer sheet material.
  • documents to be reproduced are placed at the imaging station, generally designated by reference character 11, which includes a light projecting system, for the purpose of scanning.
  • the illuminated data is projected downwardly by means of a mirror-lens imaging assembly 12 and through a slit aperture assembly 13 and onto the imaging or reproducing surface of an electrostatographic plate in the form of a drum 14.
  • the electrostatographic drum 14 includes a cylindrical member mounted in suitable bearings in the frame of the machine and is driven in a clockwise direction as viewed in FIG. 1 by a motor at a constant rate that is proportional to the scan rate whereby the peripheral rate of the drum surface is substantially identical to the rate of movement of the reflected light image.
  • the drum surface comprises a layer of photoconductive material on a grounded conductive backing that is sensitized prior to exposure by means of a corona generating device 15.
  • the exposure of the drum surface to the light image discharges the photoconductive layer in the areas struck by light, whereby there remains on the drum an electrostatic latent image corresponding to the light image projected.
  • the electrostatic latent image passes through a developing station in which there is positioned a developer apparatus including a housing 16 for developing material.
  • a suitable driving means is used to carry the developing material to the upper part of the developer housing where it is cascaded down over a hopper chute onto the electrostatic latent image 0 the drum.
  • toner particles are pulled away from the carrier component of the developing material and deposited on the drum to form powder images, while the partially denuded carrier particles pass off the drum into the developer housing sump.
  • an image transfer station Positioned next and adjacent to the developing station in a clockwise direction is an image transfer station which includes a sheet feeding mechanism adapted to feed sheets successively to the developed image on the drum at the transfer station.
  • This sheet feeding mechanism generally designated 18, includes a sheet source for a plurality of sheets of a suitable transfer material that is typically sheets of paper or the like, a separating roller adapted to feed the top sheet of the stack to feed belt and rollers 20 which direct the sheet material into contact with the rotating drum at a speed preferably slightly in excess of the rate of travel of the surface of the drum in coordination with the appearance of the developed image at the transfer station.
  • the sheet material is introduced between the feed rollers and is thereby brought into contact with the rotating drum at the correct time and position to register with the developed image.
  • guides are positioned on opposite sides of the feed rollers.
  • the transfer of the powder image from the drum surface to the transfer material is effected by means of a corona transfer device 21 that is located at or immediately after the point of contact between the transfer material and the rotating drum.
  • the corona transfer device 21 is substantially similar to the corona dis charge device in that it includes an array of one or more corona discharge electrodes that are energized from a suitable high potential source and extend transversely across the drum surface and are substantially enclosed within a shielding member.
  • the electrostatic field created by the corona transfer device is effective to tack the transfer material electrostatically to the drum surface, thus causing the transfer material to move synchronously with the drum while in contact therewith. Simultaneously with the tacking action, the electrostatic field is effective to attract a significant portion of the toner particles, formin g the powder image, from the drum surface and cause them to adhere electrostatically to the surface of the transfer material.
  • a transfer material stripping apparatus or paper pickoff mechanism for removing the transfer material from the drum surface.
  • This device includes a plurality of small diameter, multiple outlet conduits 24 of a manifold that is supplied with pressurized aeriform fluid through the outlet conduits into contact with the surface of the drum slightly in advance of the sheet material to strip the leading edge of the sheet material from the drum surface and to direct it onto a horizontal conveyor 23.
  • the sheet material is then carried to a fixing device in the form of a fuser assembly 25, whereby the developed and transferred powder image on the sheet material is permanently fixed thereto.
  • the finished copy is preferably discharged from the apparatus at a suitable point 26 for external collection, in a copy collector positioned at a convenient place for copy removal by the machine operator.
  • the next and final station in the device is a drum cleaning station having positioned therein a corona precleaning device 27 similar to the corona charging device 15, to impose, an electrostatic charge on the drum and residual powder adherent thereto to more readily permit removal of residual or untransferred toner.
  • a drum cleaning device 28 adapted to remove any powder remaining on the drum surface after transfer, is also provided as is a source of light 29 whereby the photoconductive drum is flooded with light to cause dissipation of any residual electrical charge remaining thereon.
  • the electrostatic charging of the electrostatographic drum in preparation for the exposure step and the electrostatic charging of the support surface to effect transfer are accomplished by means of corona generating devices whereby electrostatic charge is applied to the respectivesurfaces in each instance.
  • a corona charging device of the type disclosed in the U.S., Pat. No. 2,836,725 to Vyverberg is used for both the corona charging device 15, the corona transfer device 21, and the corona precleaning device 27, each of which is secured to suitable frame elements of the apparatus and connected to suitable power sources.
  • the present invention utilizes a cleaning device which employs the use of a cellular surfaced material.
  • the cellular surfaced material employed is physically constituted by an expanded structural material of low apparent density, such expanded material being defined as a-cellular solid whose volume contains an appreciable fraction of uniformly dispersed voids or cells. Expanded materials may be classified as either the open or closed cell type, the former consisting of a series or plurality of interconnected cells which are capable of absorbing large quantities of fluid, and the latter, or closed cell type, consisting of discrete voids, each void being completely surrounded by a thin envelope of resin.
  • expanded materials are phenol-aldehyde and urea-aldehyde resins, polystyrene, polyethylene, polyurethanes, plasticized poly(- vinyl chloride), cellulose acetate, and both natural and synthetic elastomers.
  • the open or closed cell materials can be used. Where the closed cell material is used, the surface cells are themselves each cut open by the formation of the material around the supporting subsurface. The resultant material will thus have surface cells, either in the form of naturally open cells facing the area to be cleaned, or opened cells formed by cutting across closed cells to form the surface of the cleaning roller.
  • an expanded material 30, which may preferably take the form of a polyurethane foam material mounted on a central shaft 32, is illustrated with a plurality of openings formed by the open cells 40 facing the surface 34 of an area to be cleaned.
  • the imaging surface 34 has a direction of rotation indicated by the arrow 36, and forms a nip with the roller formed by the cellular material 30. The nip is such that the cleaning material 30 exhibits a degree of impact relative to the surface 34 sufficient to cause the residual marking material 38 to be wiped into the open celled surface of the material 30.
  • the shaft 32 causes the material 30 to rotate about an axis transverse to the direction of movement of the surface 34, in a direction resulting in frictional engagement between the open celled structure of the material 30 and the surface 34 to be cleaned. It is not necessary for the material to rotate in an opposite directionv to the surface 34 to be cleaned, but a differential surface speed is preferred in order that the cells most efficiently fill with the marking material 38 to be removed from the surface 34. In oper-' ation, those surface cells on the area of the material not yet in contact withthe surface 34, as is shown in the lower hemisphere portion of the material 30, FIG. 2, are open without any material therein.
  • an open cell will fill with the material derived from the contact between the two surfaces.
  • the cells now filled with material continue to rotate until these cells reach the pick-off mechanism illustrated in this example as a scraper or doctor blade mechanism 44.
  • the doctor blade abrades against the material 30 with sufiicient force to enter the cellular structure and scrape the material from the cellular structure.
  • Coarser cell structures of the order of 10 per linear inch are also possible, however, it should be noted that since there is abrasive contact between the surface of the material 30 and the surface 34 to be cleaned, care must be taken that the surface 34 does not itself become abraded by the rubbing action of the material 30. Thus, the material 30 should consist of a relatively soft and relatively non-abrading surface.
  • a discharge device such as the corona unit 48 may be provided with a source of potential 50 coupled thereto of magnitude and polarity sufficient to neutralize the charge accumulating on the roller 30.
  • Corona discharge devices are described in detail in the aforementioned Vyverberg patent.
  • FIG. 3 an alternative embodiment employing the use of a roller in accordance with the present invention is explained and illustrated in further detail.
  • an imaging surface 52 such as a photoreceptive or insulating drum which is to be cleaned is rotated in the direction of the arrow 54 through the cleaning station 56 corresponding to the cleaning station 28 illustrated in the FIG. 1.
  • a pair of rollers each containing expanded materials such as a polyurethane foam of either the open or closed cell variety is shown. The cleaning action occurs at the nip formed between thefirst foam roller 58 and the second foam roller 60 against the surface 52.
  • the foam roller 58 is mounted on a shaft 62.positioned transversely to the rotational direction of the surface 52, and which is journaled for rotation into a frame member 64 which may in turn be mounted to the machine housing, not shown.
  • the second foam roller 60 is mounted on a parallel shaft 66 which is also journaled for rotation into a frame member 64.
  • the shaft 62 is coupled at its opposite end througha further frame member 68 to a pulley 70 which is in turn driven by a belt 72.
  • the belt 72 is coupled to a drive pulley 74 which is in turn driven by a motor unit 76 through a shaft 78.
  • the pulley 74 is also coupled by means of a belt 80 to a further pulley 82 which is in turn coupled through the frame 68 to the other end of the shaft 66 for driving the second roller 60.
  • Each of the rollers 58 and 60 utilize open celled surfaces and operate to clean the surface of the drum in the manner explained in connection with the embodiment illustrated in FIG. 2.
  • the first roller 58 operates against the surface 52 to remove the major portion of residual developing material such as the electroscopic toner illustrated as element 84 on the surface of the drum 52.
  • the electroscopic toner material 84 passes into the nip formed by the roller 58 and the surface 52, the sweeping engagement results in material filling the cellular surface of the roller 58.
  • the roller 58 continues to rotate in the direction indicated by the arrow, therein, and comes.
  • a scraping mechanism 88 such as a doctor blade positioned so as to deformably engage the surface of the roller 58 and dislodge and remove material 90 from the cellular surface in the manner described in connection with FIG. 2.
  • the framework 92 includes a conveyor network 94 which responds to the receipt of the material 90 removed by the scraper mechanism 88 from the roller 58 for conveying the material back to the developing mechanism, thereby recycling the developing material for reuse.
  • roller 60 After the drum surface 52 emerges from the nip formed by the roller 58 and the drum surface 52, it approaches the second nip formed by the roller 60 on the drum surface 52.
  • the roller 60 which may have a finer cell structure than the roller 58, then removes any residual developer material still remaining on the surface of the drum 52 which may not have been removed by the first roller 58.
  • Roller 60 rotating in the direction indicated by the arrow, enters a second pick-off mechanism indicated generally as 96 and which may also include a scraper member 98 fixed to the framework 100. Residual material 102 is removed from the surface of the roller 60 by the negative pressure resulting from vacuum, and also by the scraper 98.
  • the material 102 falls within the chamber defined by the framework which in this embodiment is preferably an air sealed closed loop between the scraper 98 and the upper portion of the framework 104, in order to render the vacuum mechanism coupled to the exit port 106 effective in removing material thus collected. Since a relatively small amount of material will be dislodged and removed by virtue of the roller 60, relatively lower vacuum pressure, along with reduced noise levels, heat levels, etc. is required to remove the remaining developer. A permanent disposal system for this latter material may be employed in lieu of the recycling system noted in connection with the pick-off mechanism 86.
  • vacuum removal can be applied directly to the cellular surface after cleaning of the imaging surface without the need for direct scraping contact.
  • the strength of the vacuum would determine the degree to which material is removed from the open cells.
  • the present invention may be employed with other forms of reproducing devices, such as the endless loop photoreceptor shown in U.S. Pat. No. 3,432,231 to Gardner.
  • the present invention may also be used with other forms of development employing marking materials such as inks instead of the electroscopic toner material as described in conjunction with FIG. 1.
  • rollers may be employed at various locations around the surface which it is desired to clean, and other means may be employed for cleaning the surfaces of the rollers after removal of the developing material from the surface to be cleaned.
  • recycling can be provided at both stations with a two roll embodiment, or neither station may employ recycling.
  • the rollers need not rotate at the same speed, and may rotate at different relative speeds to take advantage of the various absorbing characteristics of varying surface porocity materials.
  • a cleaning apparatus for cleaning powder material from an imaging surface, said cleaning apparatus and said imaging surface having relative movement, said cleaning apparatus comprising a cellular-surfaced material having a plurality of open cells exposed along its surface, means for effecting sweeping engagement between said cellular-surfaced material and said imaging surface, said sweeping engagement resulting in removal of said powder material from said imaging surface by trapping said powder material within said open cells, and removal means for removing said powder material from said cellular-surfaced material, said removal means including a scraping means for deformably engaging said cellular-surfaced material and removing said powder material from said open cells.
  • the combination 'in claim 1 further including means for neutralizing any electrical charge accumulating on said cellular-surfaced material.
  • A'cleaning apparatus for cleaning powder material from an imaging surface, said cleaning apparatus and said imaging surface having relative movement, said cleaning apparatus comprising a cellular-surfaced material having a plurality of open cells exposed along its surface, means for effecting sweeping engagement be tween said cellular-surfaced material and said imaging surface, said sweeping engagement resulting in removal of said powder material from said imaging surface by trapping said powder material within said open cells, and removal means located adjacent said cellularsurfaced material for removing said powder material from said cellular-surfaced material, said removal means including scraping means for deformably engaging said cellular-surfaced material and removing said powder material from said open cells.
  • a cleaning apparatus for cleaning powder material from an imaging surface said cleaning apparatus and said imaging surface having relative movement
  • said cleaning apparatus comprising a cellular surfaced roller means, said cellular surface including a plurality of open cells exposed along the roller outer surface, means for transporting said roller means into sweeping engagement with said imaging surface to form a nip between said cellular surface and said imaging surface, said sweeping engagement resulting in removal of said powder material from said imaging surface by trapping said powder material within said open cells along the outer surface of said roller means, and removal means positioned in proximity with said roller means for removing said powder material from said cellular surface, said removal means including a scraping means deformably engaging said roller means and removing said powder material from said open cells of said outer surface of said roller means.
  • roller means includes a roller having an expanded structural material surface, said roller having its longitudinal axis transversely positioned with respect to said imaging surface.
  • roller means includes first and second rollers, each positioned parallel to one another with their respective longitudinal axis positioned along the width of the imaging surface and transverse to the movement thereof, said first roller having a first removal means associated therewith, and said second roller having a second removal means associated therewith.
  • an electrostato-graphic imaging device including an electrostatographic imaging surface having relative motion with respect to a charging station for applying a charge to said imaging surface, an imaging station selectively discharging said I charged surface and forming an electrostatic latent image, a developing station for forming a powder image with electroscopic toner material, and a transfer station for transferring said powder image to a support surface, a cleaning station for cleaning any residual powder material from said imaging surface, said cleaning station comprising a roller having a central shaft and a cleaning surface material affixed to said shaft, said cleaning surface material comprising an expanded structural material having a plurality of open cells definingthe outer surface thereof, said roller positioned with said central shaft transverse to the direction of said relative motion, means for driving said central shaft and rotating said roller and said cleaning surface material into a nip formed between said cleaning surface material and said imaging surface whereby said cleaning material and said imaging surface meet in sweeping engagement, said sweeping engagement resultingin placing said residual powder material into said open cells at said nip, and removal means
  • roller is a first roller and further including a second roller, each said roller positioned parallel to one another with their respective longitudinal axis positioned along the width of the imaging surface and transverse to the movement thereof, said first roller having a first removal means associated therewith, and said second roller having a second removal means associated therewith.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cleaning In Electrography (AREA)
US00279156A 1972-08-09 1972-08-09 Electrophotographic cleaning apparatus Expired - Lifetime US3807853A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US00279156A US3807853A (en) 1972-08-09 1972-08-09 Electrophotographic cleaning apparatus
GB3700373A GB1439229A (en) 1972-08-09 1973-08-03 Cleaning image powder from a surface in an imaging apparatus
NL7310970A NL7310970A (enExample) 1972-08-09 1973-08-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00279156A US3807853A (en) 1972-08-09 1972-08-09 Electrophotographic cleaning apparatus

Publications (1)

Publication Number Publication Date
US3807853A true US3807853A (en) 1974-04-30

Family

ID=23067877

Family Applications (1)

Application Number Title Priority Date Filing Date
US00279156A Expired - Lifetime US3807853A (en) 1972-08-09 1972-08-09 Electrophotographic cleaning apparatus

Country Status (3)

Country Link
US (1) US3807853A (enExample)
GB (1) GB1439229A (enExample)
NL (1) NL7310970A (enExample)

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889015A (en) * 1972-05-24 1975-06-10 Electrostatic Equip Corp Coating method with cleaning
US3947108A (en) * 1974-05-20 1976-03-30 Xerox Corporation Cleaning system
US3955533A (en) * 1972-09-27 1976-05-11 Smith Ian E Squeegee roller system for removing excess developer liquid from photoconductive surfaces
US3957509A (en) * 1974-04-30 1976-05-18 Xerox Corporation Method and apparatus for removing contaminants from an electrostatic imaging surface
US3966394A (en) * 1975-04-30 1976-06-29 Xerox Corporation Plural cleaning rolls assembly
US3980424A (en) * 1975-04-28 1976-09-14 Xerox Corporation Fuser cleaning roller
US3996888A (en) * 1974-07-18 1976-12-14 Raychem Corporation Cleaning and lubricating system for fusing apparatus
US4001838A (en) * 1974-04-01 1977-01-04 Electroprint, Inc. Methods and apparatus for cleaning paper in a high speed electrostatic printing apparatus
US4007983A (en) * 1975-10-29 1977-02-15 Xerox Corporation Liquid developer cleaning means
DE2736078A1 (de) * 1976-08-11 1978-02-16 Ricoh Kk Einrichtung zum reinigen eines photoempfindlichen teils
US4076564A (en) * 1974-09-16 1978-02-28 Xerox Corporation Roughened imaging surface for cleaning
US4101215A (en) * 1975-12-20 1978-07-18 Agfa-Gevaert A.G. Cleaning device for an electrostatic copier
US4134673A (en) * 1975-02-27 1979-01-16 Xerox Corporation Dual brush cleaning apparatus
DE2932514A1 (de) * 1978-11-09 1980-05-29 Savin Corp Vorrichtung zum entfernen von fluessigkeit von einer oberflaeche, insbesondere reinigungsvorrichtung fuer kopiergeraete
FR2441203A1 (fr) * 1978-11-09 1980-06-06 Savin Corp Appareil de nettoyage d'une surface de formation d'image
US4230406A (en) * 1979-03-26 1980-10-28 Xerox Corporation Cleaning system for an electrostatic copier
FR2456965A1 (fr) * 1979-05-15 1980-12-12 Savin Corp Procede et appareil d'enlevement de l'exces de liquide de developpement des surfaces photoconductrices
US4253761A (en) * 1976-04-17 1981-03-03 Kabushiki-Kaisha Kip Cleaning devices for use in electrophotographic apparatus
EP0025678A1 (en) * 1979-09-14 1981-03-25 Canon Inc. Cleaning device for a transferring system of a wet-type copying machine
US4263390A (en) * 1978-01-24 1981-04-21 Hitachi Metals, Ltd Residual toner removing device
US4395113A (en) * 1981-10-29 1983-07-26 Nashua Corporation Methods and apparatus for cleaning photoconductive members
US4447144A (en) * 1982-12-08 1984-05-08 International Business Machines Corporation Grooved roller support for a belt xerographic photoconductor
US4530596A (en) * 1982-02-17 1985-07-23 Konishiroku Photo Industry Co., Ltd. Electrostatic copying apparatus
US4547063A (en) * 1983-07-25 1985-10-15 Xerox Corporation Moving magnet cleaner
US4568174A (en) * 1984-02-27 1986-02-04 Xerox Corporation Photoreceptor descumming device
FR2578487A1 (fr) * 1985-03-08 1986-09-12 Bridgestone Corp Rouleau pour machine de bureau dont le corps principal est forme d'une resine de polyurethane a deux couches
US4704964A (en) * 1986-02-07 1987-11-10 Air Stamping, Inc. Bearer wiper assembly
US4878093A (en) * 1988-10-03 1989-10-31 Xerox Corporation Dual roll cleaning apparatus for charge retentive surface
US4893562A (en) * 1986-02-07 1990-01-16 Air Stamping, Inc. Bearer wiper assembly
US4963944A (en) * 1988-06-30 1990-10-16 Minolta Camera Kabushiki Kaisha Residual toner cleaning device for image forming apparatus
US5128725A (en) * 1990-08-20 1992-07-07 Xerox Corporation Method and apparatus for increasing toner loading of a cleaning brush for improved surface cleaning in electrophotographic imaging
US5237376A (en) * 1992-01-23 1993-08-17 Eastman Kodak Company Cleaning nozzle for a cleaning station in a reproduction apparatus
US5283617A (en) * 1991-09-10 1994-02-01 Xerox Corporation Development apparatus employing magnetic field shapers
EP0581355A1 (en) * 1992-07-27 1994-02-02 Océ-Nederland B.V. Apparatus for transferring a toner image from an image-forming medium to a receiving material
EP0652495A1 (en) * 1993-11-09 1995-05-10 Xerox Corporation Cleaner blade lubricating system
US5530537A (en) * 1994-09-15 1996-06-25 Xerox Corporation Biased foam roll cleaner
US6023597A (en) * 1995-05-30 2000-02-08 Canon Kabushiki Kaisha Cellular conductive roller with conductive powder filling open cells in the surface
US6118970A (en) * 1998-06-04 2000-09-12 Oki Data Corporation Cleaning roller
US6144827A (en) * 1998-09-22 2000-11-07 Nec Corporation Liquid image forming apparatus, squeeze roller, and process for renewing surface of squeeze roller
US6671161B2 (en) * 2001-07-13 2003-12-30 Microdrug Ag Removing dose electric charge
US6736066B2 (en) * 1999-09-06 2004-05-18 Heidelberger Druckmaschinen Ag Combustion pick-up roller in a printing-plate exposer
US6907826B1 (en) * 1999-06-30 2005-06-21 OCé PRINTING SYSTEMS GMBH Method and device for printing a base material and cleaning a printing roller
JP2017102214A (ja) * 2015-11-30 2017-06-08 京セラドキュメントソリューションズ株式会社 クリーニング装置及び該クリーニング装置を備えた画像形成装置
WO2020023053A1 (en) * 2018-07-27 2020-01-30 Hewlett-Packard Development Company, L.P. Cleaning electrophotographic printing drums

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5121167A (en) * 1990-06-27 1992-06-09 Xerox Corporation Sweep and vacuum xerographic cleaning method and apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3438706A (en) * 1966-10-07 1969-04-15 Canon Kk Electrophotographic device
US3572923A (en) * 1968-08-26 1971-03-30 Xerox Corp Cleaning method and apparatus for electrostatic copying machines
US3600081A (en) * 1969-11-14 1971-08-17 Xerox Corp Imaging apparatus
US3656200A (en) * 1969-11-14 1972-04-18 Xerox Corp Cleaning apparatus
US3659302A (en) * 1969-11-14 1972-05-02 Xerox Corp Cleaning apparatus
US3728016A (en) * 1971-12-22 1973-04-17 Ibm Cleaning apparatus for electrostatic copy devices

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3438706A (en) * 1966-10-07 1969-04-15 Canon Kk Electrophotographic device
US3572923A (en) * 1968-08-26 1971-03-30 Xerox Corp Cleaning method and apparatus for electrostatic copying machines
US3600081A (en) * 1969-11-14 1971-08-17 Xerox Corp Imaging apparatus
US3656200A (en) * 1969-11-14 1972-04-18 Xerox Corp Cleaning apparatus
US3659302A (en) * 1969-11-14 1972-05-02 Xerox Corp Cleaning apparatus
US3728016A (en) * 1971-12-22 1973-04-17 Ibm Cleaning apparatus for electrostatic copy devices

Cited By (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889015A (en) * 1972-05-24 1975-06-10 Electrostatic Equip Corp Coating method with cleaning
US3955533A (en) * 1972-09-27 1976-05-11 Smith Ian E Squeegee roller system for removing excess developer liquid from photoconductive surfaces
US4001838A (en) * 1974-04-01 1977-01-04 Electroprint, Inc. Methods and apparatus for cleaning paper in a high speed electrostatic printing apparatus
US3957509A (en) * 1974-04-30 1976-05-18 Xerox Corporation Method and apparatus for removing contaminants from an electrostatic imaging surface
US3947108A (en) * 1974-05-20 1976-03-30 Xerox Corporation Cleaning system
US3996888A (en) * 1974-07-18 1976-12-14 Raychem Corporation Cleaning and lubricating system for fusing apparatus
US4076564A (en) * 1974-09-16 1978-02-28 Xerox Corporation Roughened imaging surface for cleaning
US4134673A (en) * 1975-02-27 1979-01-16 Xerox Corporation Dual brush cleaning apparatus
US3980424A (en) * 1975-04-28 1976-09-14 Xerox Corporation Fuser cleaning roller
US3966394A (en) * 1975-04-30 1976-06-29 Xerox Corporation Plural cleaning rolls assembly
US4007983A (en) * 1975-10-29 1977-02-15 Xerox Corporation Liquid developer cleaning means
US4101215A (en) * 1975-12-20 1978-07-18 Agfa-Gevaert A.G. Cleaning device for an electrostatic copier
US4253761A (en) * 1976-04-17 1981-03-03 Kabushiki-Kaisha Kip Cleaning devices for use in electrophotographic apparatus
FR2361685A1 (fr) * 1976-08-11 1978-03-10 Ricoh Kk Dispositif pour nettoyer des elements photosensibles, notamment des appareils de reprographie par voie electrophotographique
DE2736078A1 (de) * 1976-08-11 1978-02-16 Ricoh Kk Einrichtung zum reinigen eines photoempfindlichen teils
US4181425A (en) * 1976-08-11 1980-01-01 Ricoh Company, Ltd. Apparatus for cleaning photosensitive member
US4263390A (en) * 1978-01-24 1981-04-21 Hitachi Metals, Ltd Residual toner removing device
US4439035A (en) * 1978-11-09 1984-03-27 Savin Corporation Copier cleaning system incorporating resilient noncellular sealing roller
DE2932514A1 (de) * 1978-11-09 1980-05-29 Savin Corp Vorrichtung zum entfernen von fluessigkeit von einer oberflaeche, insbesondere reinigungsvorrichtung fuer kopiergeraete
FR2441204A1 (fr) * 1978-11-09 1980-06-06 Savin Corp Appareil de nettoyage pour une machine de reprographie a revelateur liquide, comprenant un rouleau de nettoyage elastique a alveoles fermees
FR2441203A1 (fr) * 1978-11-09 1980-06-06 Savin Corp Appareil de nettoyage d'une surface de formation d'image
US4392742A (en) * 1978-11-09 1983-07-12 Savin Corporation Liquid developer copier cleaning system incorporating resilient closed-cell cleaning roller
US4230406A (en) * 1979-03-26 1980-10-28 Xerox Corporation Cleaning system for an electrostatic copier
FR2456965A1 (fr) * 1979-05-15 1980-12-12 Savin Corp Procede et appareil d'enlevement de l'exces de liquide de developpement des surfaces photoconductrices
EP0025678A1 (en) * 1979-09-14 1981-03-25 Canon Inc. Cleaning device for a transferring system of a wet-type copying machine
US4395113A (en) * 1981-10-29 1983-07-26 Nashua Corporation Methods and apparatus for cleaning photoconductive members
US4530596A (en) * 1982-02-17 1985-07-23 Konishiroku Photo Industry Co., Ltd. Electrostatic copying apparatus
US4447144A (en) * 1982-12-08 1984-05-08 International Business Machines Corporation Grooved roller support for a belt xerographic photoconductor
US4547063A (en) * 1983-07-25 1985-10-15 Xerox Corporation Moving magnet cleaner
US4568174A (en) * 1984-02-27 1986-02-04 Xerox Corporation Photoreceptor descumming device
FR2578487A1 (fr) * 1985-03-08 1986-09-12 Bridgestone Corp Rouleau pour machine de bureau dont le corps principal est forme d'une resine de polyurethane a deux couches
US4704964A (en) * 1986-02-07 1987-11-10 Air Stamping, Inc. Bearer wiper assembly
US4893562A (en) * 1986-02-07 1990-01-16 Air Stamping, Inc. Bearer wiper assembly
US4963944A (en) * 1988-06-30 1990-10-16 Minolta Camera Kabushiki Kaisha Residual toner cleaning device for image forming apparatus
US4878093A (en) * 1988-10-03 1989-10-31 Xerox Corporation Dual roll cleaning apparatus for charge retentive surface
US5128725A (en) * 1990-08-20 1992-07-07 Xerox Corporation Method and apparatus for increasing toner loading of a cleaning brush for improved surface cleaning in electrophotographic imaging
US5283617A (en) * 1991-09-10 1994-02-01 Xerox Corporation Development apparatus employing magnetic field shapers
US5237376A (en) * 1992-01-23 1993-08-17 Eastman Kodak Company Cleaning nozzle for a cleaning station in a reproduction apparatus
EP0581355A1 (en) * 1992-07-27 1994-02-02 Océ-Nederland B.V. Apparatus for transferring a toner image from an image-forming medium to a receiving material
US5521687A (en) * 1992-07-27 1996-05-28 Oce-Nederland, B.V. Method of removing impurities from a transport member during an electrostatic imaging process
EP0652495A1 (en) * 1993-11-09 1995-05-10 Xerox Corporation Cleaner blade lubricating system
US5530537A (en) * 1994-09-15 1996-06-25 Xerox Corporation Biased foam roll cleaner
US6023597A (en) * 1995-05-30 2000-02-08 Canon Kabushiki Kaisha Cellular conductive roller with conductive powder filling open cells in the surface
US6118970A (en) * 1998-06-04 2000-09-12 Oki Data Corporation Cleaning roller
US6144827A (en) * 1998-09-22 2000-11-07 Nec Corporation Liquid image forming apparatus, squeeze roller, and process for renewing surface of squeeze roller
US6907826B1 (en) * 1999-06-30 2005-06-21 OCé PRINTING SYSTEMS GMBH Method and device for printing a base material and cleaning a printing roller
US6736066B2 (en) * 1999-09-06 2004-05-18 Heidelberger Druckmaschinen Ag Combustion pick-up roller in a printing-plate exposer
US6671161B2 (en) * 2001-07-13 2003-12-30 Microdrug Ag Removing dose electric charge
JP2017102214A (ja) * 2015-11-30 2017-06-08 京セラドキュメントソリューションズ株式会社 クリーニング装置及び該クリーニング装置を備えた画像形成装置
WO2020023053A1 (en) * 2018-07-27 2020-01-30 Hewlett-Packard Development Company, L.P. Cleaning electrophotographic printing drums
US11237513B2 (en) 2018-07-27 2022-02-01 Hewlett-Packard Development Company, L.P. Cleaning electrophotographic printing drums

Also Published As

Publication number Publication date
NL7310970A (enExample) 1974-02-12
GB1439229A (en) 1976-06-16

Similar Documents

Publication Publication Date Title
US3807853A (en) Electrophotographic cleaning apparatus
US3781107A (en) Cleaning apparatus
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
EP0366426B1 (en) Electrophotographic device having an a.c. biased cleaning member
US3572923A (en) Cleaning method and apparatus for electrostatic copying machines
US4870465A (en) Toner removal and surface abrading apparatus for a charge retentive surface
US4819026A (en) Cleaning apparatus for a charge retentive surface
CA1112290A (en) Apparatus for cleaning photosensitive member
US4878093A (en) Dual roll cleaning apparatus for charge retentive surface
EP0103405B1 (en) Toner removal apparatus
US4338880A (en) Magnetic brush development apparatus for use in electrophotographic copying machine
US3655373A (en) Cleaning method for electrostatic copying machines
US4134673A (en) Dual brush cleaning apparatus
US4518248A (en) Apparatus for forming image by developing charge latent image with two component dry developing agent
US5530537A (en) Biased foam roll cleaner
JPS62279382A (ja) 静電写真式複写機の清掃装置
US3617123A (en) Xerographic cleaning apparatus
US4533235A (en) Cleaning device for use in an image forming apparatus
US5329344A (en) Lubrication of a detoning roll
US6259882B1 (en) Cleaning brush for non-imaging surfaces in an electrostatographic printer or copier
US3641979A (en) Toner-reclaiming system
JPH0546552B2 (enExample)
US3654901A (en) Toner reclaiming system
US3635196A (en) Pneumatically controlled seal