GB351201A - Process for the photochemical production of screen diapositives for the production of photomechanical printing surfaces - Google Patents
Process for the photochemical production of screen diapositives for the production of photomechanical printing surfacesInfo
- Publication number
- GB351201A GB351201A GB16175/30A GB1617530A GB351201A GB 351201 A GB351201 A GB 351201A GB 16175/30 A GB16175/30 A GB 16175/30A GB 1617530 A GB1617530 A GB 1617530A GB 351201 A GB351201 A GB 351201A
- Authority
- GB
- United Kingdom
- Prior art keywords
- image
- bichromate
- screen
- enlargement
- production
- 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
- 238000000034 method Methods 0.000 title 1
- 238000010672 photosynthesis Methods 0.000 title 1
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 abstract 5
- 229910052709 silver Inorganic materials 0.000 abstract 5
- 239000004332 silver Substances 0.000 abstract 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 4
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 108010010803 Gelatin Proteins 0.000 abstract 1
- 239000004471 Glycine Substances 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 229920000159 gelatin Polymers 0.000 abstract 1
- 239000008273 gelatin Substances 0.000 abstract 1
- 235000019322 gelatine Nutrition 0.000 abstract 1
- 235000011852 gelatine desserts Nutrition 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
- -1 silver halide Chemical class 0.000 abstract 1
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
Abstract
351,201. Photo-mechanical printing- surfaces. BEKK & KAULEN CHEMISCHE FABRIK GES., DR., 102, Hindenburgdamm, Lichterfelde, Berlin. May 26, 1930, No. 16175. Convention date, May 27, 1929. [Class 98 (ii).] Screen diapositives for the production of printing surfaces, having screen points which can be reduced and re-enlarged as required, are produced by printing from a screen negative on to a silver halide plate which has been bathed in a bichromate solution. A sufficiently long exposure to produce a differentially hardened bichromate image is given, without producing an over-exposed and useless silver image. The silver image is then developed with a strong developer (e.g. glycine) and fixed. The reduction of the screen points may now be effected in any known manner. If re-enlargement of the dots is required the bichromate image is developed in hot water to wash out the unexposed soluble gelatin, and the silver image reintensified with strong intensifiers such as a lead intensifier. Re-enlargement up to the size of the hardened points of the developed bichromate image is possible. Re-intensification of the silver image, without actual re-enlargement of the image dots, may be effected with mercury or copper intensifiers without a hot-water development of the bichromate image. The reduction and re-intensification with or without re-enlargement may be effected locally.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE351201X | 1929-05-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB351201A true GB351201A (en) | 1931-06-25 |
Family
ID=6267090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16175/30A Expired GB351201A (en) | 1929-05-27 | 1930-05-26 | Process for the photochemical production of screen diapositives for the production of photomechanical printing surfaces |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1948604A (en) |
| GB (1) | GB351201A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2530232A (en) * | 1945-11-20 | 1950-11-14 | William M Devers | Method of preparing intaglio printing surfaces |
| CH617779A5 (en) * | 1977-07-25 | 1980-06-13 | Licht Druck Ag |
-
1930
- 1930-05-26 GB GB16175/30A patent/GB351201A/en not_active Expired
- 1930-05-27 US US456296A patent/US1948604A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1948604A (en) | 1934-02-27 |
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