GB607235A - Improvements in or relating to printing members - Google Patents
Improvements in or relating to printing membersInfo
- Publication number
- GB607235A GB607235A GB1463/46A GB146346A GB607235A GB 607235 A GB607235 A GB 607235A GB 1463/46 A GB1463/46 A GB 1463/46A GB 146346 A GB146346 A GB 146346A GB 607235 A GB607235 A GB 607235A
- Authority
- GB
- United Kingdom
- Prior art keywords
- printing
- soluble
- relief
- stretched
- polyvinyl alcohol
- 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)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
607,235. Photomechanical printing surfaces. NATIONAL CASH REGISTER CO. Jan. 16, 1946, No. 1463. Convention date, Oct. 15, 1941. [Class 98 (ii)] A relief printing member is made by impregnating, throughout its thickness, with a bichromate a self-supporting elastic material, stretching this member by an amount equal to the elongation thereof when in use for printing, exposing the stretched member beneath a light-stencil to render it differentially soluble, partially removing the soluble areas, and allowing the printing member to return to its normal size. In the preferred embodiment, a sheet of polyvinyl alcohol soluble in cold water impregnated with sodium dichromate is used. The " distorted relief printing member produced is wrapped around a printing cylinder so that the printing surface is stretched to the same extent as during its production so that a true copy of the design to which it was exposed is printed. If desired, the printing member may be carried on a transparent substance which is not affected by the wash-out development step so that only the front surface of the member stands out in relief. A suitable backing layer is a polyvinyl alcohol soluble only in hot water.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US415041A US2413747A (en) | 1941-10-15 | 1941-10-15 | Method of making printing members |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB607235A true GB607235A (en) | 1948-08-27 |
Family
ID=23644110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1463/46A Expired GB607235A (en) | 1941-10-15 | 1946-01-16 | Improvements in or relating to printing members |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2413747A (en) |
| DE (1) | DE830651C (en) |
| FR (1) | FR923026A (en) |
| GB (1) | GB607235A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2587439A (en) * | 1950-01-05 | 1952-02-26 | Electrographic Corp | Making ready cylindrical printing plate |
| US2759818A (en) * | 1951-11-30 | 1956-08-21 | American Optical Corp | Photographic color process |
| NL83171C (en) * | 1952-11-29 | |||
| DE1225490B (en) * | 1964-02-27 | 1966-09-22 | Heinrich Heichlinger | Material for the production of negative master copies |
-
1941
- 1941-10-15 US US415041A patent/US2413747A/en not_active Expired - Lifetime
-
1946
- 1946-01-16 GB GB1463/46A patent/GB607235A/en not_active Expired
- 1946-03-01 FR FR923026D patent/FR923026A/en not_active Expired
-
1949
- 1949-01-01 DE DEP29051D patent/DE830651C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2413747A (en) | 1947-01-07 |
| FR923026A (en) | 1947-06-25 |
| DE830651C (en) | 1952-02-07 |
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