GB1419659A - Manufacture of lithoprinting plates - Google Patents

Manufacture of lithoprinting plates

Info

Publication number
GB1419659A
GB1419659A GB402273A GB402273A GB1419659A GB 1419659 A GB1419659 A GB 1419659A GB 402273 A GB402273 A GB 402273A GB 402273 A GB402273 A GB 402273A GB 1419659 A GB1419659 A GB 1419659A
Authority
GB
United Kingdom
Prior art keywords
layer
conductive
clay
silicone
charged
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
GB402273A
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
Publication of GB1419659A publication Critical patent/GB1419659A/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
    • 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
    • G03G5/05—Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
    • G03G5/0503—Inert supplements
    • G03G5/051—Organic non-macromolecular compounds
    • G03G5/0517—Organic non-macromolecular compounds comprising one or more cyclic groups consisting of carbon-atoms only
    • 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
    • G03G5/05—Organic bonding materials; Methods for coating a substrate with a photoconductive layer; Inert supplements for use in photoconductive layers
    • G03G5/0503—Inert supplements
    • G03G5/051—Organic non-macromolecular compounds
    • G03G5/0514—Organic non-macromolecular compounds not comprising cyclic groups

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Printing Plates And Materials Therefor (AREA)

Abstract

1419659 Imaging lithographic plates electrophotographically RICOH K K 26 Jan 1973 [8 Feb 1972] 4022/73 Headings G2C and G2H A photo-conductive lithographic plate blank is charged, exposed and developed with a liquid developer, then subjected to a corona discharge and etched, adhesion of the etching liquid to image areas not charged by the corona discharge being prevented by incorporation or coating of a surface-modifying agent in or on a photoconductive material which would otherwise be wetted by the etching liquid. The surfacemodifying agent may be mixed with the photoconductive material or may be applied to the surface of a formed photo-conductive layer. Suitable surface-modifying agents are silicone oils, paraffin, linseed oil, mineral oil, dialkylnaphthalenes and monoalkyldiphenyls. Preferably the blank consists of a support such as paper which has been made electrically conductive by coating one side of the paper with a layer containing a conductive polymer and clay and then coated on the other side with a layer of casein, epoxy resin, styrene/butadiene copolymer and clay and overcoated with a layer of ZnO, acrylic resin, silicone resin and silicone oil.
GB402273A 1972-02-08 1973-01-26 Manufacture of lithoprinting plates Expired GB1419659A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47013325A JPS4882906A (en) 1972-02-08 1972-02-08

Publications (1)

Publication Number Publication Date
GB1419659A true GB1419659A (en) 1975-12-31

Family

ID=11829987

Family Applications (1)

Application Number Title Priority Date Filing Date
GB402273A Expired GB1419659A (en) 1972-02-08 1973-01-26 Manufacture of lithoprinting plates

Country Status (3)

Country Link
US (1) US3834909A (en)
JP (1) JPS4882906A (en)
GB (1) GB1419659A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116736A (en) * 1982-03-09 1983-09-28 Mitsubishi Paper Mills Ltd Electrophotographic lithographic printing plate

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5163710A (en) * 1974-11-26 1976-06-02 Fuji Photo Film Co Ltd
US4304601A (en) * 1975-06-04 1981-12-08 Mallinckrodt, Inc. Planographic printing ink
DE2648184A1 (en) * 1976-10-25 1978-05-24 Hoechst Ag COPY PROCEDURE
US4403550A (en) * 1979-08-23 1983-09-13 Ppg Industries, Inc. Process for planographic printing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116736A (en) * 1982-03-09 1983-09-28 Mitsubishi Paper Mills Ltd Electrophotographic lithographic printing plate

Also Published As

Publication number Publication date
DE2303617B2 (en) 1976-11-04
DE2303617A1 (en) 1973-08-16
JPS4882906A (en) 1973-11-06
US3834909A (en) 1974-09-10

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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