GB1404218A - Electrophotographic apparatus using a photosensitive member with electrically insulating layer - Google Patents

Electrophotographic apparatus using a photosensitive member with electrically insulating layer

Info

Publication number
GB1404218A
GB1404218A GB5300972A GB5300972A GB1404218A GB 1404218 A GB1404218 A GB 1404218A GB 5300972 A GB5300972 A GB 5300972A GB 5300972 A GB5300972 A GB 5300972A GB 1404218 A GB1404218 A GB 1404218A
Authority
GB
United Kingdom
Prior art keywords
photo
cds
image
electro
moved
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
Application number
GB5300972A
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of GB1404218A publication Critical patent/GB1404218A/en
Expired legal-status Critical Current

Links

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
    • G03G21/06—Eliminating residual charges from a reusable imaging member
    • G03G21/08—Eliminating residual charges from a reusable imaging member using optical radiation
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/226—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 where the image is formed on a dielectric layer covering the photoconductive layer
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02—Charge-receiving layers
    • G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • G03G5/043—Photoconductive layers characterised by having two or more layers or characterised by their composite structure
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/02—Charge-receiving layers
    • G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
    • G03G5/043—Photoconductive layers characterised by having two or more layers or characterised by their composite structure
    • G03G5/0436—Photoconductive layers characterised by having two or more layers or characterised by their composite structure combining organic and inorganic layers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)

Abstract

1404218 Electro-photographic element; copying apparatus MITSUBISHI DENKI KK 16 Nov 1972 [16 Nov 1971] 53009/72 Headings G2C and G2H An electro-photographic element comprises a support having a conductive surface, a photoconductive layer on the surface and photo-sensitive to a first wavelength range of radiation and a layer of a photo-conductive insulating material on the photo-conductive layer which is transmissive to the first range but photo-sensitive to a second wavelength range of radiation outside the first range. The conductive surface may be vapour-deposited Al or a carbon coating or the support may be of Al. The photo-conductive layer is preferably sensitive to visible radiation and may be CdS doped with Cu and Cl in a vinyl, acrylic or cellulose resin. Alternatively CdS, Se+Te, ZnO, CdS+ZnS, CdS+CdSe or polyvinylcarbazole may be used. The photo-conductive insulating layer is preferably sensitive to U.V. radiation and may be polyvinyl carbazole optionally sensitized with picric acid, polyvinyl pyrene, polyvinyl anthracene, ZnO, ZnS, or ZnS+CdS. An electro-photographic apparatus comprises the element together with means for imagewise irradiating at a first wavelength, means for simultaneously charging to form an electrostatic latent image and means for irradiating at a second wavelength thereby to erase the image. In an embodiment, an electro-photographic element 10 is exposed to a visible image 30 while a corona charger 34 is moved A across its surface. The element is moved B to a transfer position past an incandescent lamp 36 which erases residual charge on the element but increases the stability of the latent image. The image is transferred to a dielectric-coated tape 38 and wet developed at 44. The developed image is dried at 46. The element 10 is moved D back for re-use past a U.V. lamp 50 which removes any residual latent image. In an alternative embodiment, Fig. 4 (not shown) the element 10 may be moved (F) beneath a corona charger (72) and light source (70) to charge the element to the opposite polarity before charging by corona 34. In another embodiment, Fig. 3 (not shown), a cylindrical element (60) is used and the latent image is developed on the cylinder by electroscopic particles (66) prior to transfer to a dielectric-coated sheet.
GB5300972A 1971-11-16 1972-11-16 Electrophotographic apparatus using a photosensitive member with electrically insulating layer Expired GB1404218A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46091755A JPS4856434A (en) 1971-11-16 1971-11-16

Publications (1)

Publication Number Publication Date
GB1404218A true GB1404218A (en) 1975-08-28

Family

ID=14035341

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5300972A Expired GB1404218A (en) 1971-11-16 1972-11-16 Electrophotographic apparatus using a photosensitive member with electrically insulating layer

Country Status (4)

Country Link
US (1) US3776627A (en)
JP (1) JPS4856434A (en)
DE (1) DE2256327A1 (en)
GB (1) GB1404218A (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5030532A (en) * 1973-07-04 1975-03-26
US3914609A (en) * 1974-03-04 1975-10-21 Xerox Corp Signal amplification by illumination of a partially developed latent electrostatic image
GB1520281A (en) * 1974-07-10 1978-08-02 Canon Kk Electrophotographic recording apparatus
DE2535572A1 (en) * 1974-08-29 1976-03-11 Xerox Corp NEW XEROGRAPHIC SYSTEMS AND PROCESSES TO IMPROVE THE SHELF LIFE AND LIFE OF SUCH SYSTEMS
JPS5516288B2 (en) * 1974-11-07 1980-05-01
US4190445A (en) * 1975-03-20 1980-02-26 Canon Kabushiki Kaisha Electrophotographic photosensitive media and process for manufacturing thereof
GB1570519A (en) * 1975-11-11 1980-07-02 Ricoh Kk Electrophotographic light-sensitive members
JPS5381121A (en) * 1976-12-27 1978-07-18 Kip Kk Method of taking electrophotography and device therefor
JPS53100241A (en) * 1977-02-14 1978-09-01 Fuji Xerox Co Ltd Photosensitive materials for electrophotography
DE2730051C2 (en) * 1977-07-02 1986-01-02 Philips Patentverwaltung Gmbh, 2000 Hamburg Electrophotographic process
DE2734288C2 (en) * 1977-07-29 1982-06-03 Hoechst Ag, 6000 Frankfurt Electrophotographic recording material
JPS5460938A (en) * 1977-10-22 1979-05-16 Ricoh Co Ltd Electrophotographic method
JPS5473041A (en) * 1977-11-22 1979-06-12 Olympus Optical Co Ltd Electrophotographic method
JPS54106229A (en) * 1978-02-08 1979-08-21 Fuji Photo Film Co Ltd Image forming material and image formation using the same
JPS5767932A (en) * 1980-10-16 1982-04-24 Olympus Optical Co Ltd Electrophotographic receptor
JPS57119340A (en) * 1981-01-16 1982-07-24 Fuji Photo Film Co Ltd Radiation picture recorder
JPS57119300A (en) * 1981-01-16 1982-07-24 Fuji Photo Film Co Ltd Noise eliminator for accumulative phosphor sheet
US4477549A (en) * 1981-09-28 1984-10-16 Konishiroku Photo Industry Co., Ltd. Photoreceptor for electrophotography, method of forming an electrostatic latent image, and electrophotographic process
JPS5868739A (en) * 1981-10-21 1983-04-23 Fuji Photo Film Co Ltd Noise eraser for storage type phosphor sheet
US5161233A (en) * 1988-05-17 1992-11-03 Dai Nippon Printing Co., Ltd. Method for recording and reproducing information, apparatus therefor and recording medium
US4931839A (en) * 1988-03-11 1990-06-05 Colorocs Corporation Transfer system for electrophotographic print engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3536483A (en) * 1964-10-20 1970-10-27 Katsuragawa Denki Kk Method of making electrographs wherein the resultant electrostatic image is not effected by further light exposure
US3575500A (en) * 1965-04-06 1971-04-20 Rahn Corp Pip machine
US3630608A (en) * 1968-11-14 1971-12-28 Pitney Bowes Sage Inc High-speed copier

Also Published As

Publication number Publication date
JPS4856434A (en) 1973-08-08
US3776627A (en) 1973-12-04
DE2256327A1 (en) 1973-05-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee