GB602885A - A process for the production of an intaglio printing roller for the reproduction of monochrome or polychrome half-tone copies by photomechanical means for textile printing - Google Patents
A process for the production of an intaglio printing roller for the reproduction of monochrome or polychrome half-tone copies by photomechanical means for textile printingInfo
- Publication number
- GB602885A GB602885A GB17694/45A GB1769445A GB602885A GB 602885 A GB602885 A GB 602885A GB 17694/45 A GB17694/45 A GB 17694/45A GB 1769445 A GB1769445 A GB 1769445A GB 602885 A GB602885 A GB 602885A
- Authority
- GB
- United Kingdom
- Prior art keywords
- positive
- screened
- printing
- tone
- polychrome
- 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
- G03F5/00—Screening processes; Screens therefor
- G03F5/20—Screening processes; Screens therefor using screens for gravure printing
Abstract
602,885. Producing photo-mechanical printing rollers. HEBERLEIN & CO., AKT.-GES. July 11, 1945, No. 17694. Convention date, July 21, 1944. Addition to 567,126. Drawings to Specification. [Class 98 (ii)] The process of the parent Specification for producing an intaglio printing roller for the reproduction of monochrome or polychrome half-tone copies by photo-mechanical means for textile-printing is modified in that, by a suitable selection of stops and length of exposure, a screened positive, which is copied on to a light-sensitive etching resist layer on the roller, is produced exhibiting in the shadows white dots corresponding to the requisite supports for the doctor which are initially of sufficient size to avoid breaking out during use, the said positive being retouched in the lighter parts by local weakening to make the tonal values appear correct. The positive may be made either by contact printing from a screened negative obtained by photographing an original through a screen in contact with the film and a circular stop, or by photographing a continuous-tone negative through an out-ofcontact screen and a quadrilateral stop. Instead of correcting the screened positive, the requisite correction of the tone values may be effected by intensifying the screened negative from which the positive is contact printed. If desired, the screened positive may be treated so as to bleach the silver image and tan the gelatine in the parts containing silver.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH602885X | 1944-07-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB602885A true GB602885A (en) | 1948-06-04 |
Family
ID=4522850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB17694/45A Expired GB602885A (en) | 1944-07-21 | 1945-07-11 | A process for the production of an intaglio printing roller for the reproduction of monochrome or polychrome half-tone copies by photomechanical means for textile printing |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE459935A (en) |
CH (1) | CH240811A (en) |
FR (1) | FR915063A (en) |
GB (1) | GB602885A (en) |
NL (1) | NL62345C (en) |
-
0
- NL NL62345D patent/NL62345C/xx active
- BE BE459935D patent/BE459935A/xx unknown
-
1944
- 1944-07-21 CH CH240811D patent/CH240811A/en unknown
-
1945
- 1945-07-11 GB GB17694/45A patent/GB602885A/en not_active Expired
- 1945-09-25 FR FR915063D patent/FR915063A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL62345C (en) | |
FR915063A (en) | 1946-10-25 |
CH240811A (en) | 1946-01-31 |
BE459935A (en) |
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