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DE1255492B - Kontaktraster fuer Reproduktionszwecke und Verfahren zu seiner Herstellung - Google Patents

Kontaktraster fuer Reproduktionszwecke und Verfahren zu seiner Herstellung

Info

Publication number
DE1255492B
DE1255492B DEM57522A DEM0057522A DE1255492B DE 1255492 B DE1255492 B DE 1255492B DE M57522 A DEM57522 A DE M57522A DE M0057522 A DEM0057522 A DE M0057522A DE 1255492 B DE1255492 B DE 1255492B
Authority
DE
Germany
Prior art keywords
grid
density
lines
surface elements
diaphragm
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.)
Withdrawn
Application number
DEM57522A
Other languages
German (de)
English (en)
Inventor
Herbert Middlemiss
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.)
WH Howson Ltd
Original Assignee
WH Howson 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 WH Howson Ltd filed Critical WH Howson Ltd
Publication of DE1255492B publication Critical patent/DE1255492B/de
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G03F5/14—Screening processes; Screens therefor by contact methods
    • G03F5/16—Screening processes; Screens therefor by contact methods using grey half-tone screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
DEM57522A 1962-07-17 1963-07-17 Kontaktraster fuer Reproduktionszwecke und Verfahren zu seiner Herstellung Withdrawn DE1255492B (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27340/62A GB986419A (en) 1962-07-17 1962-07-17 Improvements in or relating to photographic half-tone contact screens

Publications (1)

Publication Number Publication Date
DE1255492B true DE1255492B (de) 1967-11-30

Family

ID=10257990

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM57522A Withdrawn DE1255492B (de) 1962-07-17 1963-07-17 Kontaktraster fuer Reproduktionszwecke und Verfahren zu seiner Herstellung

Country Status (4)

Country Link
US (1) US3275445A (el)
BE (1) BE635095A (el)
DE (1) DE1255492B (el)
GB (1) GB986419A (el)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885971A (en) * 1973-08-01 1975-05-27 Fuji Photo Film Co Ltd Contact screen and method for nonlinear transformations and filtering in coherent optical systems
US4600666A (en) * 1983-01-12 1986-07-15 Zink Edmund S Integrated photoscreen for making a halftone reproduction printing plate from a photograph
DE3339396A1 (de) * 1983-10-29 1985-05-09 Helmut 4800 Bielefeld Jahn Kontaktraster fuer die reproduktionstechnik

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE15494C (de) * WÜRTTEMBERGISCHE METALLWAARENFABRIK in Geifslingen Neuerungen in der Herstellung kupfer plattirter Eisenbleche
CH31757A (de) * 1905-01-27 1905-08-31 Theodor Dittmann Raster zur Herstellung von Autotypien
GB286340A (en) * 1926-11-04 1928-03-05 Arthur Ronald Trist Improvements in and relating to screens for photographic purposes, photo mechanical printing processes and the like
US1995958A (en) * 1933-03-03 1935-03-26 Photo Cast Inc Universal screen for preparing half-tones
DE716362C (de) * 1940-08-21 1942-01-31 Johannes Wimmer Verfahren zur Herstellung von Kopiervorlagen fuer den autotypischen Tiefdruck
GB628872A (en) * 1946-05-18 1949-09-06 Kodak Ltd Improved method of manufacturing contact half-tone screens
DE1105721B (de) * 1959-09-22 1961-04-27 Herbst & Illig Kontakt-Tiefdruckraster
GB889107A (en) * 1955-06-23 1962-02-07 Hermann Eckerlin Improvements in or relating to contact screens for use in graphic reproduction

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE15494C (de) * WÜRTTEMBERGISCHE METALLWAARENFABRIK in Geifslingen Neuerungen in der Herstellung kupfer plattirter Eisenbleche
CH31757A (de) * 1905-01-27 1905-08-31 Theodor Dittmann Raster zur Herstellung von Autotypien
GB286340A (en) * 1926-11-04 1928-03-05 Arthur Ronald Trist Improvements in and relating to screens for photographic purposes, photo mechanical printing processes and the like
US1995958A (en) * 1933-03-03 1935-03-26 Photo Cast Inc Universal screen for preparing half-tones
DE716362C (de) * 1940-08-21 1942-01-31 Johannes Wimmer Verfahren zur Herstellung von Kopiervorlagen fuer den autotypischen Tiefdruck
GB628872A (en) * 1946-05-18 1949-09-06 Kodak Ltd Improved method of manufacturing contact half-tone screens
GB889107A (en) * 1955-06-23 1962-02-07 Hermann Eckerlin Improvements in or relating to contact screens for use in graphic reproduction
DE1105721B (de) * 1959-09-22 1961-04-27 Herbst & Illig Kontakt-Tiefdruckraster

Also Published As

Publication number Publication date
US3275445A (en) 1966-09-27
GB986419A (en) 1965-03-17
BE635095A (el)

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Legal Events

Date Code Title Description
E771 Valid patent as to the heymanns-index 1977, willingness to grant licences
EHJ Ceased/non-payment of the annual fee