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 processesInfo
- 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
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.
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)
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)
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 |
DE962666C (en) * | 1953-03-13 | 1957-04-11 | Eastman Kodak Company, Rochester, N. Y. (V. St. A.) | Process for producing color photographic images by the color development process |
BE545183A (en) * | 1955-02-17 |
-
1960
- 1960-01-11 US US1575A patent/US3132946A/en not_active Expired - Lifetime
-
1961
- 1961-01-09 GB GB833/61A patent/GB925752A/en not_active Expired
- 1961-01-10 DE DE19611422487D patent/DE1422487B1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE1422487B1 (en) | 1969-09-04 |
US3132946A (en) | 1964-05-12 |
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