GB1037669A - Method of producing plates, particularly for offset printing, apparatus for carryingout this process, and plates obtained in this manner - Google Patents

Method of producing plates, particularly for offset printing, apparatus for carryingout this process, and plates obtained in this manner

Info

Publication number
GB1037669A
GB1037669A GB4888763A GB4888763A GB1037669A GB 1037669 A GB1037669 A GB 1037669A GB 4888763 A GB4888763 A GB 4888763A GB 4888763 A GB4888763 A GB 4888763A GB 1037669 A GB1037669 A GB 1037669A
Authority
GB
United Kingdom
Prior art keywords
powder
original
plate
metal
photo
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
GB4888763A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1037669A publication Critical patent/GB1037669A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/23—Reproducing arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/10—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme
    • B41C1/1066—Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme by spraying with powders, by using a nozzle, e.g. an ink jet system, by fusing a previously coated powder, e.g. with a laser
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/032—Details of scanning heads ; Means for illuminating the original for picture information reproduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/207—Simultaneous scanning of the original picture and the reproduced picture with a common scanning device

Abstract

<PICT:1037669/C6-C7/1> An apparatus for producing printing plates in accordance with an original, involving point-by-point photo-electric analysis of the original by scanning, is characterized by the use of a stream of powder which is scanned over a base plate in synchronism with the analysis of the original and is controlled in respect of flow in accordance with the photo-electric signal, the deposited powder being fixed to the plate so as to build up a printing surface in accordance with the original. The base plate is metal, preferably stainless steel or a chromium-plated metal, whilst the powder may be a metal (copper and nickel are referred to) a metal alloy, a mixture of a metal and thermoplastic resins or an organic material. The stream of powder is produced by the arrangement shown in Fig. 5, where powder from a hopper 27 is given an electric charge and then propelled by grids 27, 28, 29, 30 which are held at suitable potentials, through a storage chamber 36 to a pulsating chamber 31. An electrode in chamber 31 is controlled by electric impulses so as to cause the ejection of the powder in pulses through further electrode chambers 32, 33, 34 from which the powder is eventually propelled via outlet aperture 35. An electrode at the end of the assembly is controlled by the photo-electric signal to regulate the quantity of powder which flows in accordance with the details of the original. The projected powder passes to the base plate 14 between a pair of deflection plates 38 supplied with signals, whereby the powder stream is deflected so as to scan a line on the plate, and also through a furnace 43 heated by resistance coil 44, whereby the powder is fused so that it welds to the plate. The frequency of the impulses applied to chamber 31 is controlled by the photo-electric signal so as to cause the plate to be formed without a regular pattern due to the pulses of powder.
GB4888763A 1962-12-28 1963-12-11 Method of producing plates, particularly for offset printing, apparatus for carryingout this process, and plates obtained in this manner Expired GB1037669A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR920078A FR1352215A (en) 1962-12-28 1962-12-28 Process for manufacturing clichés, installation for implementing this process, and clichés obtained

Publications (1)

Publication Number Publication Date
GB1037669A true GB1037669A (en) 1966-08-03

Family

ID=8793812

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4888763A Expired GB1037669A (en) 1962-12-28 1963-12-11 Method of producing plates, particularly for offset printing, apparatus for carryingout this process, and plates obtained in this manner

Country Status (3)

Country Link
DE (1) DE1235142B (en)
FR (1) FR1352215A (en)
GB (1) GB1037669A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0963841A1 (en) * 1998-06-12 1999-12-15 Agfa-Gevaert N.V. A method for making positive working printing plates from a latex

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003312A (en) * 1974-12-16 1977-01-18 Xerox Corporation Preparing waterless lithographic printing masters by ink jet printing
DE2806802A1 (en) * 1978-02-17 1979-08-23 Hoechst Ag METHOD OF MANUFACTURING OFFSET PRINTING PLATES
US4833486A (en) * 1987-07-08 1989-05-23 Dataproducts Corporation Ink jet image transfer lithographic
DE4119111A1 (en) * 1991-06-10 1992-12-17 Inst Grafische Technik Zentral Prodn. of printing forme for offset work - involves producing droplets of oleophile, water-resistant medium with nozzles connected to reservoir and conveyed to parts of hydrophilic cylinder surface
WO1996022883A1 (en) * 1995-01-24 1996-08-01 Corning Incorporated Precision imaging components and methods for their formation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946329C (en) * 1952-03-20 1956-07-26 Hell Rudolf Dr Ing Fa Process for the production of screened clichés using the methods of image telegraphy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0963841A1 (en) * 1998-06-12 1999-12-15 Agfa-Gevaert N.V. A method for making positive working printing plates from a latex

Also Published As

Publication number Publication date
FR1352215A (en) 1964-02-14
DE1235142B (en) 1967-02-23

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