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GB1271561A - Improvements in and relating to electrostatic copying arrangements - Google Patents

Improvements in and relating to electrostatic copying arrangements

Info

Publication number
GB1271561A
GB1271561A GB08330/69A GB1833069A GB1271561A GB 1271561 A GB1271561 A GB 1271561A GB 08330/69 A GB08330/69 A GB 08330/69A GB 1833069 A GB1833069 A GB 1833069A GB 1271561 A GB1271561 A GB 1271561A
Authority
GB
United Kingdom
Prior art keywords
image
developed
rendering
developing
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
Application number
GB08330/69A
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 GB1271561A publication Critical patent/GB1271561A/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
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/26—Electrographic processes using a charge pattern for the production of printing plates for non-xerographic printing processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/37—Printing employing electrostatic force

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Wet Developing In Electrophotography (AREA)

Abstract

1,271,561. Electrostatic printing. RICOH K.K. April 10, 1969 [April 10, 1968], No.18330/69. Headings G2H and G2M. An electrostatic printing method comprises (1) forming a developed, hydrophobic, electrically insulating image on a substrate, (2) rendering the non-image portions conductive, (3) uniformly charging to form an electrostatic charge image, and (4) using the charge image to produce a developed image on a copy sheet. Preferably step (1) comprises (a) forming an electrostatic image on an insulating substrate (preferably electro-photographically on a supported insulating photo-conductive layer), (b) developing to form a hydrophobic, electrically insulating image and (c) either rendering the non-image areas hydrophilic with an aqueous composition before or during step (2), or transferring the developed image to an electrically insulating, hydrophilic substate. Copy sheets may be imaged in step (4) by either developing the charge image and transferring the developed image or transferring the charge image (e.g. as in the device described and claimed in Specification 1,271,562) and developing the transferred image. An aqueous solution for rendering a ZnO electro-photographic plate hydrophilic contains Na 4 Fe (CN) 6 , (NH 4 ) 2 HPO 4 , (CO 2 H) 2 , (CH 2 OH) 2 and (NH 4 ) 2 CrO 4 .
GB08330/69A 1968-04-10 1969-04-10 Improvements in and relating to electrostatic copying arrangements Expired GB1271561A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2388868 1968-04-10

Publications (1)

Publication Number Publication Date
GB1271561A true GB1271561A (en) 1972-04-19

Family

ID=12122972

Family Applications (2)

Application Number Title Priority Date Filing Date
GB08330/69A Expired GB1271561A (en) 1968-04-10 1969-04-10 Improvements in and relating to electrostatic copying arrangements
GB55143/71A Expired GB1271562A (en) 1968-04-10 1969-04-10 Improvements in and relating to electrostatic printing devices

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB55143/71A Expired GB1271562A (en) 1968-04-10 1969-04-10 Improvements in and relating to electrostatic printing devices

Country Status (3)

Country Link
US (2) US3697268A (en)
DE (1) DE1918303B2 (en)
GB (2) GB1271561A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE381109B (en) * 1972-09-28 1975-11-24 Commw Of Australia PROCEDURE FOR OFFSET PRINTING
US3812780A (en) * 1973-01-02 1974-05-28 Honeywell Inf Systems Electrographic forms print station
US3979758A (en) * 1973-04-19 1976-09-07 Kilby Jack S Electrostatic head with toner attracting plates
US4031021A (en) * 1974-03-25 1977-06-21 Deming Philip H Magnetic toner compositions
US3943528A (en) * 1974-04-25 1976-03-09 Xerox Corporation Method for producing an image using persistent electrochromic materials
US4304601A (en) * 1975-06-04 1981-12-08 Mallinckrodt, Inc. Planographic printing ink
US4204865A (en) * 1975-11-17 1980-05-27 Coulter Systems Corporation Direct-imaging flexible offset printing plate and method of manufacture
DE2924912A1 (en) * 1978-06-22 1980-01-10 Coulter Systems Corp METHOD AND DEVICE FOR ELECTROSTATICALLY PRINTING AN EXTENDED CARRIER WITH COMPOSED COLOR IMAGES
JPS6046428B2 (en) * 1978-11-28 1985-10-16 京セラミタ株式会社 electrostatography
JPS5588070A (en) * 1978-11-28 1980-07-03 Mita Ind Co Ltd Developer for electrostatic image
US4403550A (en) * 1979-08-23 1983-09-13 Ppg Industries, Inc. Process for planographic printing
JP2006349761A (en) * 2005-06-13 2006-12-28 Toshiba Corp Electrophotographic equipment
WO2013085731A2 (en) * 2011-12-06 2013-06-13 Cooledge Lighting, Inc. Formation of uniform phosphor regions for broad-area lighting systems
US12083813B2 (en) * 2021-10-21 2024-09-10 Viavi Solutions Inc. Printing machine and fixed patterned plate
US20230129906A1 (en) * 2021-10-21 2023-04-27 Viavi Solutions Inc. Electrostatic printing method
CN118176115A (en) 2021-11-12 2024-06-11 Viavi科技有限公司 Article comprising an image having two or more types of pixels

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3071645A (en) * 1959-09-09 1963-01-01 Gen Dynamics Corp Recorder utilizing electrostatic charges
US3124457A (en) * 1962-04-02 1964-03-10 Charge
US3355289A (en) * 1962-05-02 1967-11-28 Xerox Corp Cyclical xerographic process utilizing a selenium-tellurium xerographic plate
US3457070A (en) * 1964-07-25 1969-07-22 Matsuragawa Electric Co Ltd Electrophotography
US3288605A (en) * 1965-11-17 1966-11-29 Equipment Dev Corp Electrophotographic printing method
US3653064A (en) * 1968-02-25 1972-03-28 Canon Kk Electrostatic image-forming apparatus and process

Also Published As

Publication number Publication date
DE1918303A1 (en) 1969-11-20
US3795011A (en) 1974-02-26
US3697268A (en) 1972-10-10
GB1271562A (en) 1972-04-19
DE1918303B2 (en) 1971-11-25

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