GB236532A - Improvements in or relating to processes for producing photomechanical printing plates - Google Patents
Improvements in or relating to processes for producing photomechanical printing platesInfo
- Publication number
- GB236532A GB236532A GB1496125A GB1496125A GB236532A GB 236532 A GB236532 A GB 236532A GB 1496125 A GB1496125 A GB 1496125A GB 1496125 A GB1496125 A GB 1496125A GB 236532 A GB236532 A GB 236532A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- sensitive layer
- printing
- ink
- printing surface
- 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
- G03F7/04—Chromates
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Printing Plates And Materials Therefor (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
Abstract
236,532. Sachsisches Serumwerk Akt.-Ges., and Galetzka, A. July 1, 1924, [Convention date]. Photo-mechanical printing-surfaces.-In preparing printing-surfaces which may be used for letter-press or screen pictures or both combined, a sensitive layer which is exposed and treated to form the printing surface is coated on an elastic ink-repellant non-sensitive layer, and the parts of the printing surface not functioning for ink or colour transfer are removed, exposing thereat the ink-repelling layer. The base may be of any character (e.g. metal, glass, cellon or stone), and is preferably first coated with a thin coating of gelatin, waterglass and chrome alum. The intermediate ink-repelling layer is preferably water-absorbent, and conveniently of gelatin which is just sufficiently hardened to prevent any absorption of moisture during the short drying period after sensitizing, but allowing absorption of water during the subsequent developing in cold water. The water during development penetrates through the unexposed parts of the sensitive layer and swells the intermediate gelatin layer, raising the exposed parts evenly, and the layer forms a resilient backing behind the printing layer. A very thin sensitive layer may be used, in which case a substantially flat printing surface is obtained, or the sensitive layer may be thicker in which case a letter-press type of printing surface is produced.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES66427D DE424570C (en) | 1924-07-02 | 1924-07-02 | Process for the production of photomechanical colloid printing forms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB236532A true GB236532A (en) | 1926-04-22 |
Family
ID=7498796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1496125A Expired GB236532A (en) | 1924-07-02 | 1925-06-09 | Improvements in or relating to processes for producing photomechanical printing plates |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE424570C (en) |
| FR (1) | FR603475A (en) |
| GB (1) | GB236532A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2598506A (en) * | 2017-06-19 | 2022-03-02 | Techtronic Floor Care Tech Ltd | A dirt separation device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5677533A (en) * | 1995-09-29 | 1997-10-14 | Science Applications International Corporation | Apparatus for detecting abnormally high temperature conditions in the wheels and bearings of moving railroad cars |
-
1924
- 1924-07-02 DE DES66427D patent/DE424570C/en not_active Expired
-
1925
- 1925-06-09 GB GB1496125A patent/GB236532A/en not_active Expired
- 1925-09-22 FR FR603475D patent/FR603475A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2598506A (en) * | 2017-06-19 | 2022-03-02 | Techtronic Floor Care Tech Ltd | A dirt separation device |
| GB2598506B (en) * | 2017-06-19 | 2022-06-08 | Techtronic Floor Care Tech Ltd | A dirt separation device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE424570C (en) | 1926-01-26 |
| FR603475A (en) | 1926-04-16 |
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