US3644959A - Device for cleaning photosensitive member in electrophotography - Google Patents

Device for cleaning photosensitive member in electrophotography Download PDF

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Publication number
US3644959A
US3644959A US47098A US3644959DA US3644959A US 3644959 A US3644959 A US 3644959A US 47098 A US47098 A US 47098A US 3644959D A US3644959D A US 3644959DA US 3644959 A US3644959 A US 3644959A
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US
United States
Prior art keywords
brush
shaft
disks
bristles
cleaning
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
US47098A
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English (en)
Inventor
Wasaburo Ohta
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Application granted granted Critical
Publication of US3644959A publication Critical patent/US3644959A/en
Anticipated expiration legal-status Critical
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    • 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
    • G03G21/0035—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 brush; Details of cleaning brushes, e.g. fibre density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
    • B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
    • B08B1/34—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members rotating about an axis parallel to the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/50—Cleaning by methods involving the use of tools involving cleaning of the cleaning members
    • B08B1/54—Cleaning by methods involving the use of tools involving cleaning of the cleaning members using mechanical tools

Definitions

  • ABSTRACT A device for cleaning or removing the toner particles which cling to photosensitive cylinders used in electrophotographic processing, comprising a rotating cleaning brush for removing the clinging toner particles from the photosensitive cylinder and means for in turn, cleaning the toner from the brush comprising a rotating shaft having a plurality of disks arranged thereon at angles to the rotational axis of the shaft in such a manner that the peripheral portions of the disks enter into the bristles of the brush, and the clinging toner is removed from the brush by the combined rotational and axial movement of the peripheries of the disks.
  • the gradual oscillating motion of the disk peripheries with respect to the bristles avoids sudden bending and springbaek of the bristles so that the toner is effectively prevented from being scattered or dispersed.
  • FIG.3 (a) (b) (c) (d) NVENTOR WAS/IBUIQO OIL/TA Y'AL,
  • the present invention relates to a device for cleaning or removing the toner particles clinging to a reusable photosensitive member in electrophotography and specifically to cleaning a cleaning brush.
  • the toner still remaining upon the electrophotographic photosensitive member is removed by means of a cleaning brush.
  • the toner, which in turn attaches to the cleaning brush is then removed by applying a rod or bar-shaped cleaning means (for example as disclosed in US. Pat. No. 2,75l,6l6).
  • a rod or bar-shaped cleaning means for example as disclosed in US. Pat. No. 2,75l,6l6
  • the present invention is intended to provide an improved device for removing the toner from the cleaning brush used to remove the toner attached to a photosensitive member in electrophotography.
  • the present invention provides a device for cleaning rotary cleaning brushes used in electrophotographic copying machines characterized by comprising a rotating shaft extending in parallel with the shaft of said cleaning brush and having a plurality of disks thereon arranged at angles to the rotational axis in such a manner that a part of the peripheral portion of each of said disks may be inserted into the bristles of the cleaning brush, so as to remove the toner particles clinging to the brush by the rotational and axial movements of the disk peripheries.
  • FIG. 1 is a top view of one embodiment of the present invention
  • FIG. 2 is a side view indicating the rotational directions of the parts shown in FIG. 1;
  • FIGS. 3a-e illustrate the angular positions of a given disk with respect to the shaft axis at 90 intervals during one complete rotation of the shaft.
  • FIG. 1 shows a reusable photosensitive drum 3, such as a selenium Xerographic drum, carried by a rotary table shaft 2 joumaled in bearings 1 and rotating in the direction indicated by an arrow in FIG. 2.
  • a cleaning brush 4 carried by a rotatable shaft 6 joumaled in bearings rotates in contact with the rotary drum 3 in the same direction so that the relative velocity therebetween may be increased.
  • the bristles of the cleaning brush may be made of furs of rabbits, feathers, untwisted silk fabrics and the like.
  • a device for cleaning this cleaning brush 4 is generally designated by 7 and is disposed in side-by-side relation with the brush 4.
  • the device 7 comprises a metal shaft 9 joumaled in bearings 8 and a plurality of disks 10 arranged on the shaft 9 at angles relative to the axis thereof in such a manner that some peripheral portions of these disks 10 may enter among and contact the bristles of the cleaning brush 4.
  • the cleaning device 7 is rotated through a gear train consisting of the gears 11, 12 and 13 in the same direction as that of the cleaning brush 4 thereby increasing the relative velocity therebetween.
  • the disks 10 may be of metal, preferably aluminum, or plastic, or other material, which is harder than the bristles of the cleaning brush.
  • FIGS. 3ae The angular arrangement of the disks 10 relative to the cleaning brush 4 may be readily understood from FIGS. 3ae. Assume that the disks 10 is first inclined toward the left as shown in FIG. 3a. Upon rotation of the disk 10 through the angular position of the disk 10 relative to the cleaning brush 4 so changes that one radius 1 of the disk 10 becomes perpendicular to the axis of the shaft 9 as shown in FIG. 3b. Upon further rotation through 90, the disk 10 is inclined to the right as shown in FIG. 30. Upon further rotation through 90, one radius 1 of the disk becomes perpendicular to the axis of the shaft 9 again as shown in FIG. 3d. Upon further rotation through 90, the disk 10 returns to its initial position as shown in FIG. 32.
  • the angular positions of the disks 10 relative to the brush 4 vary as shown by the imaginary lines in FIG I. That is, the disks 10 not only rotate but also displace in the axial direction of the cleaning brush 4 in contact therewith. By these rotational and axial displacements of each disk 10, the toner attached to the brush 4 may be completely removed and dropped by gravity.
  • the angle of the disk 10 relative to the cleaning brush 4 is varied in such a manner that each disk 10 may contact with and move away from the bristles of the brush 4 very gradually. In other words, the movement of the bristles is like a gradual peristaltic movement.
  • a device for cleaning a rotary cleaning brush which in turn removes the toner from a reusable photosensitive member used in an electrophotographic process, said device comprising a rotary shaft extending in parallel with the rotary shaft of said rotary brush, and a plurality of thin disks carried by said shaft at angles in such a manner that some peripheral portions of said disc are inserted into and contact the bristles of said rotary cleaning brush, whereby upon rotation of said disks toner attached to said rotary cleaning brush may be removed away by both the rotary and axial movements of said disks with respect to said bristles.
  • a device for cleaning the bristles of a brush comprising:
  • c. means on said shaft having a plurality of thin disklike protruding peripheral portions extending into and contacting the bristles of said brush and arranged at an angle to the axis of said shaft, so as to execute oscillatory axial motion with respect to said bristles to produce transverse bristle agitation during shaft rotation.
  • said bristle contacting means comprises a plurality of disks whose peripheral portions are arranged at the same angle with respect to the shaft axis.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cleaning In Electrography (AREA)
  • Cleaning In General (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
US47098A 1969-06-24 1970-06-17 Device for cleaning photosensitive member in electrophotography Expired - Lifetime US3644959A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1969060108U JPS4825134Y1 (enrdf_load_stackoverflow) 1969-06-24 1969-06-24

Publications (1)

Publication Number Publication Date
US3644959A true US3644959A (en) 1972-02-29

Family

ID=13132565

Family Applications (1)

Application Number Title Priority Date Filing Date
US47098A Expired - Lifetime US3644959A (en) 1969-06-24 1970-06-17 Device for cleaning photosensitive member in electrophotography

Country Status (5)

Country Link
US (1) US3644959A (enrdf_load_stackoverflow)
JP (1) JPS4825134Y1 (enrdf_load_stackoverflow)
DE (1) DE2030962C3 (enrdf_load_stackoverflow)
FR (1) FR2051212A5 (enrdf_load_stackoverflow)
GB (1) GB1280927A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883292A (en) * 1973-05-29 1975-05-13 Xerox Corp Sleeveless pressure roll cleaner
US4172303A (en) * 1978-04-03 1979-10-30 Eastman Kodak Company Cleaning station
US4213794A (en) * 1979-03-12 1980-07-22 Eastman Kodak Company Cleaning station
US4348103A (en) * 1980-07-14 1982-09-07 Olympus Optical Company Ltd. Cleaning apparatus for photosensitive member of electrophotographic copying machine
EP0639804A3 (en) * 1993-08-20 1996-06-26 Xerox Corp Apparatus for removing residual developing material from a surface of a printer.
EP1050348A3 (de) * 1999-05-03 2002-10-30 WANDRES GmbH MICRO-CLEANING Vorrichtung zum Reinigen von Oberflächen
US20100189480A1 (en) * 2009-01-26 2010-07-29 Kyocera Mita Corporation Cleaning device and image forming apparatus including the same
CN111185414A (zh) * 2019-12-30 2020-05-22 重庆市和鑫达电子有限公司 集成电路铜板除尘装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2706599C2 (de) * 1977-02-16 1982-12-23 Siemens AG, 1000 Berlin und 8000 München Reinigungseinrichtung für einen Zwischenträger bei einem nach dem elektrostatischen Prinzip arbeitenden Druck- oder Kopiergerät
US4530597A (en) * 1982-02-15 1985-07-23 Konishiroku Photo Industry Co., Ltd. Brush cleaning device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE434124C (de) * 1923-06-14 1926-09-20 Linotype Machinery Ltd Vorrichtung zum Waschen der Plattenzylinder bei Rotationsdruckmaschinen, beispielsweise Rotationsgummidruckmaschinen
DE592363C (de) * 1931-12-13 1934-02-06 Josef Baer Selbsttaetige Pinselausputzmaschine
US3089415A (en) * 1961-11-24 1963-05-14 Elmer C Grembecki Means for cleaning the cylindrical surface of printing press blanket roller
US3534427A (en) * 1968-03-18 1970-10-20 Xerox Corp Cleaning apparatus for electrostatic printing machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE434124C (de) * 1923-06-14 1926-09-20 Linotype Machinery Ltd Vorrichtung zum Waschen der Plattenzylinder bei Rotationsdruckmaschinen, beispielsweise Rotationsgummidruckmaschinen
DE592363C (de) * 1931-12-13 1934-02-06 Josef Baer Selbsttaetige Pinselausputzmaschine
US3089415A (en) * 1961-11-24 1963-05-14 Elmer C Grembecki Means for cleaning the cylindrical surface of printing press blanket roller
US3534427A (en) * 1968-03-18 1970-10-20 Xerox Corp Cleaning apparatus for electrostatic printing machines

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883292A (en) * 1973-05-29 1975-05-13 Xerox Corp Sleeveless pressure roll cleaner
US4172303A (en) * 1978-04-03 1979-10-30 Eastman Kodak Company Cleaning station
US4213794A (en) * 1979-03-12 1980-07-22 Eastman Kodak Company Cleaning station
US4348103A (en) * 1980-07-14 1982-09-07 Olympus Optical Company Ltd. Cleaning apparatus for photosensitive member of electrophotographic copying machine
EP0639804A3 (en) * 1993-08-20 1996-06-26 Xerox Corp Apparatus for removing residual developing material from a surface of a printer.
EP1050348A3 (de) * 1999-05-03 2002-10-30 WANDRES GmbH MICRO-CLEANING Vorrichtung zum Reinigen von Oberflächen
US20100189480A1 (en) * 2009-01-26 2010-07-29 Kyocera Mita Corporation Cleaning device and image forming apparatus including the same
US8254820B2 (en) * 2009-01-26 2012-08-28 Kyocera Document Solutions Inc. Cleaning device that cleans a surface of an image bearing member by removing substances remaining on the surface of the image bearing member after a toner image is transferred onto a sheet and image forming apparatus including the same
CN111185414A (zh) * 2019-12-30 2020-05-22 重庆市和鑫达电子有限公司 集成电路铜板除尘装置

Also Published As

Publication number Publication date
DE2030962A1 (de) 1971-01-21
FR2051212A5 (enrdf_load_stackoverflow) 1971-04-02
DE2030962B2 (de) 1973-05-03
GB1280927A (en) 1972-07-12
JPS4825134Y1 (enrdf_load_stackoverflow) 1973-07-23
DE2030962C3 (de) 1973-11-29

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