GB1142635A - Improvements in and relating to the production of printing blocks and plates - Google Patents
Improvements in and relating to the production of printing blocks and platesInfo
- Publication number
- GB1142635A GB1142635A GB2630365A GB2630365A GB1142635A GB 1142635 A GB1142635 A GB 1142635A GB 2630365 A GB2630365 A GB 2630365A GB 2630365 A GB2630365 A GB 2630365A GB 1142635 A GB1142635 A GB 1142635A
- Authority
- GB
- United Kingdom
- Prior art keywords
- negative
- subject
- film
- making
- orthochromatic
- 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
- G03F5/24—Screening processes; Screens therefor by multiple exposure, e.g. combined processes for line photo and screen
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Printing Methods (AREA)
Abstract
1,142,635. Photo-mechanical and multi-colour printing processes. J. B. CROSSLAND. April 28, 1966 [June 22, 1965], No.26303/65. Addition to 977, 234. Headings G2C and G2M. Negatives for use in preparing photo-mechanical printing plates are produced by making a negative of the subject on an orthochromatic or panchromatic film, making two positive transparencies of the negative on orthochromatic film, one transparency being continuous tone and accentuating, i. e. making lighter, portions of the subject and the other transparency being half-tone and accentuating the lighter portions of the subject, registering the two positives and producing the required negative on orthochromatic film. For colour printing, four colour separation negatives of the subject are made on panchromatic film using red, green, blue and yellow filters. From each negative two positive transparencies are produced, registered and photographed to produce the required negative as set out above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2630365A GB1142635A (en) | 1965-06-22 | 1965-06-22 | Improvements in and relating to the production of printing blocks and plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2630365A GB1142635A (en) | 1965-06-22 | 1965-06-22 | Improvements in and relating to the production of printing blocks and plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1142635A true GB1142635A (en) | 1969-02-12 |
Family
ID=10241523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2630365A Expired GB1142635A (en) | 1965-06-22 | 1965-06-22 | Improvements in and relating to the production of printing blocks and plates |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1142635A (en) |
-
1965
- 1965-06-22 GB GB2630365A patent/GB1142635A/en not_active Expired
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