FR1557990A - - Google Patents

Info

Publication number
FR1557990A
FR1557990A FR1557990DA FR1557990A FR 1557990 A FR1557990 A FR 1557990A FR 1557990D A FR1557990D A FR 1557990DA FR 1557990 A FR1557990 A FR 1557990A
Authority
FR
France
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
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 filed Critical
Application granted granted Critical
Publication of FR1557990A publication Critical patent/FR1557990A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/083—Devices involving movement of the workpiece in at least one axial direction
    • B23K26/0853—Devices involving movement of the workpiece in at least in two axial directions, e.g. in a plane
    • 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
    • H04N1/40—Picture signal circuits
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4051—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Facsimile Image Signal Circuits (AREA)
FR1557990D 1967-02-20 1968-02-20 Expired FR1557990A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8007/67A GB1204542A (en) 1967-02-20 1967-02-20 Improved printing process

Publications (1)

Publication Number Publication Date
FR1557990A true FR1557990A (fr) 1969-02-21

Family

ID=9843996

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1557990D Expired FR1557990A (fr) 1967-02-20 1968-02-20

Country Status (6)

Country Link
US (1) US3564131A (fr)
BE (1) BE710961A (fr)
DE (1) DE1622340A1 (fr)
FR (1) FR1557990A (fr)
GB (1) GB1204542A (fr)
NL (1) NL6802333A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4883723A (fr) * 1972-02-08 1973-11-08
DE2241850C3 (de) * 1972-08-25 1978-06-29 European Rotogravure Association, 8000 Muenchen Verfahren zur Herstellung von Druckformen mittels eines Energiestrahles
US3920951A (en) * 1974-06-03 1975-11-18 Gen Electric Laser etching apparatus for forming photographic images on metallic surfaces
DE2931098C2 (de) * 1979-07-31 1983-01-05 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Verfahren zur Druckformherstellung
DE3176685D1 (en) * 1980-09-01 1988-04-21 Crosfield Electronics Ltd A method of producing a half-tone reproduction
DE3242154A1 (de) * 1982-11-13 1984-05-17 Hoechst Ag, 6230 Frankfurt Verfahren zum bedrucken von polyesterfasermaterialien nach der transferdruck-technik
US4544264A (en) * 1984-05-17 1985-10-01 International Business Machines Corporation Fine line print enhancement
DE3442955A1 (de) * 1984-11-24 1986-06-05 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren und vorrichtung zur herstellung fotografischer bilder durch punktweises aufbelichten
DE3525807C1 (de) * 1985-07-19 1986-12-18 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren und Vorrichtung zur Erzeugung positiver Kopien von Diapositiven
US5205211A (en) * 1989-01-25 1993-04-27 Wallace Edwards Printed product having adjacent or closely spaced multicolour halftone dots
US6185336B1 (en) * 1998-09-23 2001-02-06 Xerox Corporation Method and system for classifying a halftone pixel based on noise injected halftone frequency estimation
US6775394B2 (en) 2002-03-12 2004-08-10 Matsushita Electric Industrial Co., Ltd. Digital watermarking of binary document using halftoning

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2060778A (en) * 1935-11-11 1936-11-10 William G H Finch Facsimile system
US2136340A (en) * 1937-02-17 1938-11-08 Interchem Corp Printing plate
CH332844A (de) * 1954-11-10 1958-09-30 Hell Rudolf Dr Ing Fa Verfahren zur Herstellung von gerasterten Klischees mit automatischer Tonwertkorrektur und Vorrichtung zur Durchführung des Verfahrens
LU39915A1 (fr) * 1960-04-01
US3461229A (en) * 1965-08-17 1969-08-12 Jess Oppenheimer Electro-optical reproduction method
US3517119A (en) * 1967-02-23 1970-06-23 Rca Corp Device for producing line halftone images similar to the images produced by the woodcut type method of printing

Also Published As

Publication number Publication date
BE710961A (fr) 1968-07-01
GB1204542A (en) 1970-09-09
US3564131A (en) 1971-02-16
NL6802333A (fr) 1968-08-21
DE1622340A1 (de) 1970-10-22

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Legal Events

Date Code Title Description
ST Notification of lapse