GB582956A - Improvements in or relating to photomechanical reproduction - Google Patents
Improvements in or relating to photomechanical reproductionInfo
- Publication number
- GB582956A GB582956A GB13628/44A GB1362844A GB582956A GB 582956 A GB582956 A GB 582956A GB 13628/44 A GB13628/44 A GB 13628/44A GB 1362844 A GB1362844 A GB 1362844A GB 582956 A GB582956 A GB 582956A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- tone
- sheet
- developed
- exposed
- 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
- G03F5/24—Screening processes; Screens therefor by multiple exposure, e.g. combined processes for line photo and screen
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
Abstract
582,956. Photo - mechanical printing processes. POWERS, F. T. July 17, 1944, No. 13628. Convention date, Sept. 1, 1943. [Class 98 (ii)] In a half-tone process, a high contrast antihalation light-sensitive, sheet is exposed in a, camera with the half-tone screen in normal position, the screen is removed, and the sheet is re-exposed to the same subject. The material may be panchromatic. On removal of the half-tone screen, a clear glass sheet of equal thickness may be substituted. The material is developed. in a high contrast developer, fixed and washed, and is then printed on to sensitized metal, which is developed and etched. The process may be applied to the production of three-colour or four-colour process plates, and the screen or subject may be rotated between the production of the component negatives.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US582956XA | 1943-09-01 | 1943-09-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB582956A true GB582956A (en) | 1946-12-03 |
Family
ID=22015913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13628/44A Expired GB582956A (en) | 1943-09-01 | 1944-07-17 | Improvements in or relating to photomechanical reproduction |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB582956A (en) |
-
1944
- 1944-07-17 GB GB13628/44A patent/GB582956A/en not_active Expired
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