GB1311672A - Methods and apparatus for electrostatic printing or copying - Google Patents

Methods and apparatus for electrostatic printing or copying

Info

Publication number
GB1311672A
GB1311672A GB1290469A GB1311672DA GB1311672A GB 1311672 A GB1311672 A GB 1311672A GB 1290469 A GB1290469 A GB 1290469A GB 1311672D A GB1311672D A GB 1311672DA GB 1311672 A GB1311672 A GB 1311672A
Authority
GB
United Kingdom
Prior art keywords
ink
cells
printing
electrostatic field
layer
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
GB1290469A
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.)
Masson Scott Thrissell Engineering Ltd
Original Assignee
Masson Scott Thrissell Engineering 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 Masson Scott Thrissell Engineering Ltd filed Critical Masson Scott Thrissell Engineering Ltd
Publication of GB1311672A publication Critical patent/GB1311672A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/42—Printing without contact between forme and surface to be printed, e.g. by using electrostatic fields
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F5/00—Screening processes; Screens therefor
    • G03F5/20—Screening processes; Screens therefor using screens for gravure printing
    • 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
    • G03G15/24—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 whereby at least two steps are performed simultaneously
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G17/00—Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process
    • G03G17/04—Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process using photoelectrophoresis

Abstract

1311672 Electro-photographic processes MASSON SCOTT THRISSELL ENG Ltd 12 May 1970 [12 March 1969] 12904/69 Heading G2H [Also in Division B6] A printing machine operating by selective electrostatic transfer of ink comprises an electrically-insulating surface 12 having a large number of cells 13 in it. Preferably the cells 13 are floored with a photo-conductive material layer 17, which may be of zinc oxide, over a translucent layer 16 of an electrically conductive material such as a tin compound. The printing cylinder 11 runs in an ink bath 14, and the cells 13 in it become filled with ink and are swept by doctor blade 40. Exposure e.g. to a negative 22 through glass body 15, causes a photo-conductivity pattern to form in the layer 17, and application of an electrostatic field between layer 16 and an external electrode causes the conductivity pattern to be expressed in a bulging of the ink in the cells 13. The bulged pattern may be transferred to paper. Alternatively the bulged part of the image may be removed by a second doctor blade 41 and a second electrostatic field is applied to transfer ink from the previously-unbulged parts of the image. The layer 17 may be omitted if photo-conductive ink is used. A half-tone effect may be obtained by use of a progressively photo-conductive ink, or modulation of the electrostatic field which causes the ink to bulge, so that varying amounts of ink are transferred from the cells. In place of electroconductive modulation of the electrostatic field, a charge pattern may be applied directly by an electron beam, or by an array of electrodes. Two printing units, with a single electrostatic field between their cylinders, may be employed for perfecting printing. Multi-colour printing can be carried out by successive printing operations.
GB1290469A 1969-03-12 1969-03-12 Methods and apparatus for electrostatic printing or copying Expired GB1311672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1290469 1969-03-12

Publications (1)

Publication Number Publication Date
GB1311672A true GB1311672A (en) 1973-03-28

Family

ID=10013272

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1290469A Expired GB1311672A (en) 1969-03-12 1969-03-12 Methods and apparatus for electrostatic printing or copying

Country Status (2)

Country Link
US (1) US3687072A (en)
GB (1) GB1311672A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4428865A1 (en) * 1994-08-05 1995-01-12 Michael Schandelmaier Printing method without printing formes

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5063930A (en) * 1973-06-08 1975-05-30
US3909256A (en) * 1973-12-26 1975-09-30 Xerox Corp Electrostatographic process for preparing screen printing member
US3948655A (en) * 1973-12-26 1976-04-06 Xerox Corporation Electrostatographic process for preparing gravure printing member
US4007680A (en) * 1974-07-03 1977-02-15 Pfleger Frank G Gravure printing cylinders
CH581543A5 (en) * 1974-07-30 1976-11-15 De La Rue Giori Sa
US4227452A (en) * 1977-10-14 1980-10-14 Fuji Xerox Co., Ltd. Printing machine
US5599046A (en) * 1994-06-22 1997-02-04 Scientific Games Inc. Lottery ticket structure with circuit elements
US5475205A (en) * 1994-06-22 1995-12-12 Scientific Games Inc. Document verification system
US5471039A (en) * 1994-06-22 1995-11-28 Panda Eng. Inc. Electronic validation machine for documents
US7872660B2 (en) * 2009-02-23 2011-01-18 Hewlett-Packard Development Company, L.P. Electro-wetting-on-dielectric printing

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE665608A (en) * 1964-06-25
GB1159923A (en) * 1965-10-07 1969-07-30 Gravure Res Inst Inc Method and Apparatus for Transferring Ink in Gravure Printing.
US3363555A (en) * 1966-03-28 1968-01-16 Rca Corp Electrostatic method of making multiple copies of an image
GB1169566A (en) * 1966-11-24 1969-11-05 Crosfield Electronics Ltd Improvements relating to Printing Processes and Apparatus
US3477369A (en) * 1967-05-04 1969-11-11 Hurletron Inc Electrostatically assisted intaglio printing
US3554123A (en) * 1967-12-15 1971-01-12 Hurletron Inc Control of color densities and tones in multicolor printing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4428865A1 (en) * 1994-08-05 1995-01-12 Michael Schandelmaier Printing method without printing formes

Also Published As

Publication number Publication date
US3687072A (en) 1972-08-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees