GB925752A - Improvements in or relating to half-tone screens for í¡í¡ting processes - Google Patents

Improvements in or relating to half-tone screens for í¡í¡ting processes

Info

Publication number
GB925752A
GB925752A GB833/61A GB83361A GB925752A GB 925752 A GB925752 A GB 925752A GB 833/61 A GB833/61 A GB 833/61A GB 83361 A GB83361 A GB 83361A GB 925752 A GB925752 A GB 925752A
Authority
GB
United Kingdom
Prior art keywords
screens
dye
density
tone
jan
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
GB833/61A
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.)
Kodak Ltd
Original Assignee
Kodak 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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB925752A publication Critical patent/GB925752A/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
    • G03F5/18—Screening processes; Screens therefor by contact methods using colour half-tone screens
    • 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
    • G03F5/20—Screening processes; Screens therefor using screens for gravure printing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Laminated Bodies (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

925,752. Photographic contact screens. KODAK Ltd. Jan. 9, 1961 [Jan. 11, 1960], No. 833/61. Class 98 (2). The screens have a uniformly undulating density pattern of half-tone lateral dots containing grains of metal and a transparent dye, the density being between 0.15 and 0.70 greater than the corresponding range for the dye density alone to light absorbed by the dye. Drawings (not shown) illustrate the manner of production of the screens by exposure of a silver halide material through an aperture in the form of a cross and then a spaced half-tone screen, and the further procedure with the material of colour development and removal of unexposed silver halide is briefly described. These screens have advantages in photogravure similar to those of the magenta contact screens of Specifications 544,033, 544,034 and 544,035.
GB833/61A 1960-01-11 1961-01-09 Improvements in or relating to half-tone screens for í¡í¡ting processes Expired GB925752A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1575A US3132946A (en) 1960-01-11 1960-01-11 Contact screens for photogravure

Publications (1)

Publication Number Publication Date
GB925752A true GB925752A (en) 1963-05-08

Family

ID=21696768

Family Applications (1)

Application Number Title Priority Date Filing Date
GB833/61A Expired GB925752A (en) 1960-01-11 1961-01-09 Improvements in or relating to half-tone screens for í¡í¡ting processes

Country Status (3)

Country Link
US (1) US3132946A (en)
DE (1) DE1422487B1 (en)
GB (1) GB925752A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4011085A (en) * 1974-10-02 1977-03-08 Rapoport Printing Corporation Lithographic printing process
DE2657120C2 (en) * 1976-03-22 1986-07-03 Dai Nippon Insatsu K.K., Tokio/Tokyo Method for producing a gravure form
US4458002A (en) * 1982-06-30 1984-07-03 Agfa-Gevaert, N.V. Method and materials for improving the color balance of photographic multicolor images using contact screen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2292313A (en) * 1940-04-19 1942-08-04 Eastman Kodak Co Halftone screen
US2304988A (en) * 1940-04-19 1942-12-15 Eastman Kodak Co Photomechanical reproduction
US2737457A (en) * 1952-11-22 1956-03-06 Jerome Flax Photographic method of tonal scale compensation
BE527178A (en) * 1953-03-13
BE545183A (en) * 1955-02-17

Also Published As

Publication number Publication date
DE1422487B1 (en) 1969-09-04
US3132946A (en) 1964-05-12

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