GB401511A - Improvements in methods and apparatus for the photographic reproduction of letterpress printing formes - Google Patents
Improvements in methods and apparatus for the photographic reproduction of letterpress printing formesInfo
- Publication number
- GB401511A GB401511A GB3618232A GB3618232A GB401511A GB 401511 A GB401511 A GB 401511A GB 3618232 A GB3618232 A GB 3618232A GB 3618232 A GB3618232 A GB 3618232A GB 401511 A GB401511 A GB 401511A
- Authority
- GB
- United Kingdom
- Prior art keywords
- forme
- light
- lens
- pane
- letterpress printing
- 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
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/92—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof prepared from printing surfaces
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection-Type Copiers In General (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Abstract
401,511. Photographic projectionprinting apparatus. LOENING, E., 31, Neuenburger Strasse, Berlin. Dec. 21, 1932, No. 36182. [Class 98 (i).] Letterpress printing formes are illuminated for reproduction by projection printing, by means of a light reflecting or diffusing surface of at least double the dimensions of the forme and having an aperture in the centre large enough to allow the light reflected from the forme to reach the copying lens. In the form shown, a translucent pane G<1>, G<2> is provided surrounding the lens O, light from sources L<1>, L<2> passing through the pane to illuminate the forme U whence it is reflected into the lens O. In a modifloation the light sources L', L<2> are located alongside the forme U, the pane G<1>, G<2> being of reflecting material. The apparatus is particularly applicable for use with the formes described in Specification 385,808.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB0158103 | 1932-10-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB401511A true GB401511A (en) | 1933-11-16 |
Family
ID=7003874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3618232A Expired GB401511A (en) | 1932-10-31 | 1932-12-21 | Improvements in methods and apparatus for the photographic reproduction of letterpress printing formes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB401511A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2609293A (en) * | 1948-12-02 | 1952-09-02 | George L Morrison | Method of photographing printing forms |
US2624700A (en) * | 1948-04-10 | 1953-01-06 | George L Morrison | Preparation of printing surfaces for photographing |
US2801566A (en) * | 1954-04-07 | 1957-08-06 | Du Mont Allen B Lab Inc | Apparatus for making photographic negatives |
-
1932
- 1932-12-21 GB GB3618232A patent/GB401511A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2624700A (en) * | 1948-04-10 | 1953-01-06 | George L Morrison | Preparation of printing surfaces for photographing |
US2609293A (en) * | 1948-12-02 | 1952-09-02 | George L Morrison | Method of photographing printing forms |
US2801566A (en) * | 1954-04-07 | 1957-08-06 | Du Mont Allen B Lab Inc | Apparatus for making photographic negatives |
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