GB986419A - Improvements in or relating to photographic half-tone contact screens - Google Patents

Improvements in or relating to photographic half-tone contact screens

Info

Publication number
GB986419A
GB986419A GB27340/62A GB2734062A GB986419A GB 986419 A GB986419 A GB 986419A GB 27340/62 A GB27340/62 A GB 27340/62A GB 2734062 A GB2734062 A GB 2734062A GB 986419 A GB986419 A GB 986419A
Authority
GB
United Kingdom
Prior art keywords
screen
dots
tone
july
surrounded
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
GB27340/62A
Other languages
English (en)
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
Priority to BE635095D priority Critical patent/BE635095A/xx
Application filed by WH Howson Ltd filed Critical WH Howson Ltd
Priority to GB27340/62A priority patent/GB986419A/en
Priority to US295101A priority patent/US3275445A/en
Priority to FR941706A priority patent/FR1364328A/fr
Priority to DEM57522A priority patent/DE1255492B/de
Publication of GB986419A publication Critical patent/GB986419A/en
Expired 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)
GB27340/62A 1962-07-17 1962-07-17 Improvements in or relating to photographic half-tone contact screens Expired GB986419A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE635095D BE635095A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1962-07-17
GB27340/62A GB986419A (en) 1962-07-17 1962-07-17 Improvements in or relating to photographic half-tone contact screens
US295101A US3275445A (en) 1962-07-17 1963-07-15 Photographic half-tone contact screens
FR941706A FR1364328A (fr) 1962-07-17 1963-07-17 Trame de contact photographique en demi-teinte
DEM57522A DE1255492B (de) 1962-07-17 1963-07-17 Kontaktraster fuer Reproduktionszwecke und Verfahren zu seiner Herstellung

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
GB986419A true GB986419A (en) 1965-03-17

Family

ID=10257990

Family Applications (1)

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

Country Status (4)

Country Link
US (1) US3275445A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE635095A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1255492B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB986419A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114068A3 (en) * 1983-01-12 1985-06-05 Edmund S. Zink Integrated photoscreen for making a halftone reproduction printing plate from a photograph

Families Citing this family (2)

* 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
DE3339396A1 (de) * 1983-10-29 1985-05-09 Helmut 4800 Bielefeld Jahn Kontaktraster fuer die reproduktionstechnik

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE21230C (de) * WÜRTTEMBERGISCHE METALL-WAARENFABRIK in Geislingen Verfahren zur Herstellung von kupferplattirtem Eisen- oder Stahldraht
CH31757A (de) * 1905-01-27 1905-08-31 Theodor Dittmann Raster zur Herstellung von Autotypien
NL21929C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1926-11-04
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
US2478444A (en) * 1946-05-18 1949-08-09 Eastman Kodak Co Manufacture of photographic contact screens
DE958529C (de) * 1955-06-23 1957-02-21 Herbst & Illig Kontakt-Raster
DE1105721B (de) * 1959-09-22 1961-04-27 Herbst & Illig Kontakt-Tiefdruckraster

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114068A3 (en) * 1983-01-12 1985-06-05 Edmund S. Zink Integrated photoscreen for making a halftone reproduction printing plate from a photograph

Also Published As

Publication number Publication date
BE635095A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
US3275445A (en) 1966-09-27
DE1255492B (de) 1967-11-30

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