GB1044547A - Improvements in or relating to methods of and apparatus for producing printing blocks particularly intaglio printing blocks - Google Patents

Improvements in or relating to methods of and apparatus for producing printing blocks particularly intaglio printing blocks

Info

Publication number
GB1044547A
GB1044547A GB34415/63A GB3441563A GB1044547A GB 1044547 A GB1044547 A GB 1044547A GB 34415/63 A GB34415/63 A GB 34415/63A GB 3441563 A GB3441563 A GB 3441563A GB 1044547 A GB1044547 A GB 1044547A
Authority
GB
United Kingdom
Prior art keywords
pulses
scanning
cell
photo
laser
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
GB34415/63A
Original Assignee
Hell Rudolf
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
Priority to DEH0046818 priority Critical
Application filed by Hell Rudolf filed Critical Hell Rudolf
Publication of GB1044547A publication Critical patent/GB1044547A/en
Application status is Expired legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40Picture signal circuits
    • H04N1/40025Circuits exciting or modulating particular heads for reproducing continuous tone value scales
    • H04N1/40043Circuits exciting or modulating particular heads for reproducing continuous tone value scales using more than one type of modulation, e.g. pulse width modulation and amplitude modulation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08Devices involving relative movement between laser beam and workpiece
    • B23K26/0823Devices involving rotation of the workpiece
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41CPROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00Forme preparation
    • B41C1/02Engraving; Heads therefor
    • B41C1/04Engraving; Heads therefor using heads controlled by an electric information signal
    • B41C1/05Heat-generating engraving heads, e.g. laser beam, electron beam
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/23Reproducing arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40Picture signal circuits
    • H04N1/40025Circuits exciting or modulating particular heads for reproducing continuous tone value scales
    • H04N1/40037Circuits exciting or modulating particular heads for reproducing continuous tone value scales the reproducing element being a laser
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S408/00Cutting by use of rotating axially moving tool
    • Y10S408/701Cutting by use of radiant energy, e.g. laser, maser

Abstract

1,044,547. Removing metal by laser beams. R. HELL. Aug. 30, 1963 [Sept. 1, 1962], No. 34415/63. Heading B3V. [Also in Division H3] In the production of printing blocks from single coloured or multi-coloured picture or text originals by photo-electrically scanning the originals and removing material from the surface of the blocks under control of the scanning, the material is evaporated from the surface by a very highly bunched monochromatic bundle of light rays of high power density, particularly a laser beam, focused on the surface and modulated by the photo-cell signals. The process is applicable to the making of relief or preferably intaglio printing blocks with or without screening. In one embodiment for making a screened block, Fig. 1, an exchangeable cylinder 3 rotated by motor 1 carries the original 4 and the printing block material 5. The original and the block may be on separate synchronized machines. Scanning is effected by a point light source 6 focused by lens 7 and the reflection is passed through lens 8 to a photo-cell 9 whose signals amplified at 10 control a Kerr cell 11 in the path of a laser beam emitted from a laser crystal 17. This may be a synthetic ruby doped with chromium ions or of fluorspar doped with samarium or uranium ions. The Kerr cell thus modulates the lightintensity from the laser which is focused on the block material 5 by lens 14. Crystal 17 and a cylindrical flashlamp 16 are mounted on the focal lines of an elliptical mirrored chamber 15. The xenon flashlamp 16 is fed with constant pulses at the same frequency -as the screening from a high voltage generator 18 and a scanning stage 26 controlled through an amplifier 25 by a photocell 24 receiving light pulses from source 21 through a disc 19 on the motor shaft, having alternate opaque and transparent sections 20. In another embodiment. Fig. 2 (not shown), the laser beam has pulses of a constant amplitude and variable duration. The scanning signals from photo-cell 9 are fed to a scanner 27 which receives constant duration pulses from disc 19 and photo-cell 24. The variable amplitude pulses are transformed at 28 into time modulated pulses of constant amplitude. The laser crystal may be cooled with liquid air and the printing cylinder may also be cooled. Alternatively a gas laser may be used particularly for continuous emission processes. A plurality of scanning devices and lasers may be used.
GB34415/63A 1962-09-01 1963-08-30 Improvements in or relating to methods of and apparatus for producing printing blocks particularly intaglio printing blocks Expired GB1044547A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH0046818 1962-09-01

Publications (1)

Publication Number Publication Date
GB1044547A true GB1044547A (en) 1966-10-05

Family

ID=7156232

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34415/63A Expired GB1044547A (en) 1962-09-01 1963-08-30 Improvements in or relating to methods of and apparatus for producing printing blocks particularly intaglio printing blocks

Country Status (3)

Country Link
US (1) US3374311A (en)
CH (1) CH401689A (en)
GB (1) GB1044547A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0157754A2 (en) * 1984-03-22 1985-10-09 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Assoc. sans but lucratif Ver, zonder winstoogmerk Method of improving the surface condition of a cylinder
EP0158621A2 (en) * 1984-03-22 1985-10-16 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Assoc. sans but lucratif Ver, zonder winstoogmerk Method of improving the surface condition of a cylinder
WO2005002869A1 (en) * 2003-07-03 2005-01-13 Oesterreichische Banknoten- Und Sicherheitsdruck Gmbh Method for producing a printing plate for intaglio printing and corresponding printing plate

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3461229A (en) * 1965-08-17 1969-08-12 Jess Oppenheimer Electro-optical reproduction method
US3506779A (en) * 1967-04-03 1970-04-14 Bell Telephone Labor Inc Laser beam typesetter
US3482254A (en) * 1967-12-06 1969-12-02 Telex Inc Apparatus for recording the time-variation of an electrical signal utilizing a pulsed laser
US3646262A (en) * 1968-03-25 1972-02-29 Printing Dev Inc Electronic reproduction of continuous image with controlled modification of image reproduction
US3549733A (en) * 1968-12-04 1970-12-22 Du Pont Method of producing polymeric printing plates
US3696742A (en) * 1969-10-06 1972-10-10 Monsanto Res Corp Method of making a stencil for screen-printing using a laser beam
BE760067A (en) * 1969-12-09 1971-06-09 Applied Display Services Method and apparatus for the manufacture of relief plates and printing plates thus obtained
US3781902A (en) * 1971-09-07 1973-12-25 Nasa Recorder/processor apparatus
DE2413034C3 (en) * 1974-03-19 1983-11-17 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel, De
CH612376A5 (en) * 1976-03-10 1979-07-31 Lasag Ag Apparatus for scribing printing formes using laser beams, and method for operating this apparatus
DE2953706C2 (en) * 1979-06-14 1986-05-15 G Machulka Laser means for producing printing forms
JPH0118621B2 (en) * 1979-12-25 1989-04-06 Fuji Photo Film Co Ltd
US4395946A (en) * 1980-09-03 1983-08-02 Crosfield Electronics Limited Rotary printing presses with inplace laser impression of printing surface
GB8719412D0 (en) * 1987-08-17 1987-09-23 Zed Instr Ltd Preparing screen
JPH02139238A (en) * 1988-09-13 1990-05-29 Sony Corp Form cylinder device of intaglio
JP2000233486A (en) * 1999-02-17 2000-08-29 Riso Kagaku Corp Plate-making apparatus and plate-making method
EP1800876B1 (en) * 2005-12-22 2008-03-12 Tapematic S.P.A. A device for radiation drying

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE608711A (en) * 1959-04-06 1962-03-29 Trg Apparatus light amplifier
NL268860A (en) * 1959-04-17
US3226696A (en) * 1962-03-23 1965-12-28 John F Dove Data storage and retrieval system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0157754A2 (en) * 1984-03-22 1985-10-09 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Assoc. sans but lucratif Ver, zonder winstoogmerk Method of improving the surface condition of a cylinder
EP0158621A2 (en) * 1984-03-22 1985-10-16 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Assoc. sans but lucratif Ver, zonder winstoogmerk Method of improving the surface condition of a cylinder
EP0157754A3 (en) * 1984-03-22 1986-05-07 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Assoc. sans but lucratif Ver, zonder winstoogmerk Method of improving the surface condition of a cylinder
EP0158621A3 (en) * 1984-03-22 1986-05-14 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Assoc. sans but lucratif Ver, zonder winstoogmerk Method of improving the surface condition of a cylinder
WO2005002869A1 (en) * 2003-07-03 2005-01-13 Oesterreichische Banknoten- Und Sicherheitsdruck Gmbh Method for producing a printing plate for intaglio printing and corresponding printing plate

Also Published As

Publication number Publication date
US3374311A (en) 1968-03-19
CH401689A (en) 1965-10-31

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