CH332844A - Process for the production of screened clichés with automatic tonal value correction and device for carrying out the process - Google Patents

Process for the production of screened clichés with automatic tonal value correction and device for carrying out the process

Info

Publication number
CH332844A
CH332844A CH332844DA CH332844A CH 332844 A CH332844 A CH 332844A CH 332844D A CH332844D A CH 332844DA CH 332844 A CH332844 A CH 332844A
Authority
CH
Switzerland
Prior art keywords
clichés
screened
carrying
production
value correction
Prior art date
Application number
Other languages
German (de)
Original Assignee
Hell Rudolf Dr Ing Fa
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 Hell Rudolf Dr Ing Fa filed Critical Hell Rudolf Dr Ing Fa
Publication of CH332844A publication Critical patent/CH332844A/en

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
    • H04N1/40—Picture signal circuits
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • H04N1/4092—Edge or detail enhancement

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
CH332844D 1954-11-10 1955-10-06 Process for the production of screened clichés with automatic tonal value correction and device for carrying out the process CH332844A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE332844X 1954-11-10

Publications (1)

Publication Number Publication Date
CH332844A true CH332844A (en) 1958-09-30

Family

ID=6205950

Family Applications (1)

Application Number Title Priority Date Filing Date
CH332844D CH332844A (en) 1954-11-10 1955-10-06 Process for the production of screened clichés with automatic tonal value correction and device for carrying out the process

Country Status (4)

Country Link
US (1) US2892887A (en)
CH (1) CH332844A (en)
FR (1) FR1135193A (en)
GB (1) GB819244A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039842B (en) * 1957-08-14 1958-09-25 Rudol Hell Dr Ing Process for the artificial increase of contrast on tone value cracks and contours in clichés to be produced by means of electronic cliché machines
US3149202A (en) * 1959-10-17 1964-09-15 Ibm Digitization of video signals
FR1250541A (en) * 1959-11-30 1961-01-13 Ancienne Maison Turquetil Device for automatic engraving
US3170032A (en) * 1961-06-22 1965-02-16 Dick Co Ab Facsimile-scanner with a.g.c. of output signal by multiplication of low and high definition signals
US3461229A (en) * 1965-08-17 1969-08-12 Jess Oppenheimer Electro-optical reproduction method
GB1204542A (en) * 1967-02-20 1970-09-09 Rca Corp Improved printing process
US3646262A (en) * 1968-03-25 1972-02-29 Printing Dev Inc Electronic reproduction of continuous image with controlled modification of image reproduction
US3580995A (en) * 1968-04-29 1971-05-25 Rca Corp Constant sized halftone dot image generator
US3694570A (en) * 1970-07-22 1972-09-26 Evgeny Pavlovich Kotov Automatic engraving machine
US3726994A (en) * 1970-10-02 1973-04-10 World Color Press Automatic routing system
US4054916A (en) * 1972-06-02 1977-10-18 Dr. -Ing. Rudolf Hell Gmbh Apparatus for improving sharpness when recording continuous-tone pictures
US4051536A (en) * 1975-03-14 1977-09-27 Xerox Corporation Electronic halftone imaging system
DE2805237C3 (en) * 1978-02-08 1984-09-06 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Arrangement to increase contrast
JPS55146451A (en) * 1979-05-02 1980-11-14 Dainippon Screen Mfg Co Ltd Sharpness emphasis method in image scanning recorder
EP0098319B1 (en) * 1982-07-03 1986-03-26 DR.-ING. RUDOLF HELL GmbH Method and arrangement for contrast enhancement
DE3390498C2 (en) * 1983-06-03 1993-04-15 Hell Ag Linotype Process for scanning raster templates for obtaining signals for gravure engraving
US5341224A (en) * 1992-04-17 1994-08-23 Xerox Corporation Image processing system and method for employing adaptive scanning of halftones to provide better printable images

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2021474A (en) * 1930-03-22 1935-11-19 Bartholomew Harry Guy Phototelegraphy
US2063614A (en) * 1931-12-14 1936-12-08 Mackinner Corp Method and apparatus for making printing plates
GB460721A (en) * 1935-08-07 1937-02-03 George William Walton Improvements in or relating to television and like systems
US2269590A (en) * 1939-08-02 1942-01-13 Hazeltine Corp Signal-translating system and method of operation
US2691696A (en) * 1950-10-27 1954-10-12 Eastman Kodak Co Electrooptical unsharp masking in color reproduction
DE930491C (en) * 1952-07-15 1955-07-18 Rudolf Dr-Ing Hell Process for the electromechanical production of letterpress forms based on line templates

Also Published As

Publication number Publication date
US2892887A (en) 1959-06-30
GB819244A (en) 1959-09-02
FR1135193A (en) 1957-04-25

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