GB345255A - - Google Patents
Info
- Publication number
- GB345255A GB345255A GB38256/29A GB3825629A GB345255A GB 345255 A GB345255 A GB 345255A GB 38256/29 A GB38256/29 A GB 38256/29A GB 3825629 A GB3825629 A GB 3825629A GB 345255 A GB345255 A GB 345255A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- colloid
- dec
- photo
- mechanical
- 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
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/115—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having supports or layers with means for obtaining a screen effect or for obtaining better contact in vacuum printing
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
- Printing Plates And Materials Therefor (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
Abstract
345,255. Photo-mechanical printing- surfaces. LUDVIGSEN, N., 2, Rue de Louvois, Paris. Dec. 13, 1929, No. 38256. Convention date, Dec. 19, 1928. Drawings to Specification. [Class 98 (ii).] In a process of producing etched metal plates for photo-mechanical relief printing, a resist screen is applied as by mechanical printing to a metal plate before applying the sensitive coating. In a modified process, the resist screen so applied serves to yield the light parts of the image, and after the sensitive coating has been applied, a second screen serving for the dark parts and half-tones is superimposed thereon. The sensitive layer comprises a colloid sensitized as with ammonium bichromate, and the plate is finished, after exposure to a negative, by the known steps of washing with water, heating, and etching. The development with water washes off the second screen and the unexposed colloid, and leaves bare the first screen where the colloid has been removed; while at the exposed parts, the colloid printed through the second screen remains and covers up the first screen.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR345255T | 1928-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB345255A true GB345255A (en) | 1931-03-13 |
Family
ID=31897968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB38256/29A Expired GB345255A (en) | 1928-12-19 | 1929-12-13 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US1944354A (en) |
| BE (1) | BE366334A (en) |
| DE (1) | DE542859C (en) |
| FR (1) | FR666056A (en) |
| GB (1) | GB345255A (en) |
| NL (1) | NL29715C (en) |
-
0
- BE BE366334D patent/BE366334A/xx unknown
- NL NL29715D patent/NL29715C/xx active
-
1928
- 1928-12-19 FR FR666056D patent/FR666056A/en not_active Expired
-
1929
- 1929-12-13 GB GB38256/29A patent/GB345255A/en not_active Expired
- 1929-12-16 US US414437A patent/US1944354A/en not_active Expired - Lifetime
- 1929-12-19 DE DEL77052D patent/DE542859C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE542859C (en) | 1932-01-29 |
| NL29715C (en) | |
| BE366334A (en) | |
| FR666056A (en) | 1929-09-26 |
| US1944354A (en) | 1934-01-23 |
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