DE568183C - Process for making raster copies - Google Patents
Process for making raster copiesInfo
- Publication number
- DE568183C DE568183C DED58288D DED0058288D DE568183C DE 568183 C DE568183 C DE 568183C DE D58288 D DED58288 D DE D58288D DE D0058288 D DED0058288 D DE D0058288D DE 568183 C DE568183 C DE 568183C
- Authority
- DE
- Germany
- Prior art keywords
- halftone
- copies
- raster copies
- making raster
- making
- 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
- G03F3/00—Colour separation; Correction of tonal value
- G03F3/04—Colour separation; Correction of tonal value by photographic means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Preparing Plates And Mask In Photomechanical Process (AREA)
Description
Verfahren zur Herstellung von Rasterkopien In dem Patent 559 685 wird ein Verfahren beschrieben, mit Hilfe von Maskenfolien nach Halbtondiapositiven bzw. Halbtonnegativen abgetönte und gerasterte Teilplatten für Reproduktionszwecke herzustellen, die dann in üblicher Weise auf Metall kopiert werden. Es hat sich gezeigt, daß man nach einfarbigen Vorlagen ebenfalls bereits bei direkter Kopierung auf dem Metall richtige Farbenausschaltungen erhält, wenn man mit den geschilderten Maskenfolien in Verbindung mit Kopierrastern arbeitet. Man muß dann je nach dem erstrebten Zweck entweder ein Halbtonnegativ oder ein Halbtondiapositiv benutzen.Process for the production of raster copies In the patent 559 685 a process is described, with the help of masking foils after halftone transparencies or halftone negatives tinted and screened partial plates for reproduction purposes, which are then copied in the usual way on metal. It has been shown that, after single-color templates, correct color elimination is obtained even with direct copying on the metal, if one works with the masking foils described in connection with copier grids. One then has to use either a halftone negative or a halftone slide, depending on the intended purpose.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED58288D DE568183C (en) | 1928-07-05 | 1928-11-08 | Process for making raster copies |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED56112D DE559685C (en) | 1928-07-05 | 1928-07-05 | Process to produce tinted and rasterized partial plates for multi-color printing |
DED58288D DE568183C (en) | 1928-07-05 | 1928-11-08 | Process for making raster copies |
Publications (1)
Publication Number | Publication Date |
---|---|
DE568183C true DE568183C (en) | 1933-08-31 |
Family
ID=25972631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED58288D Expired DE568183C (en) | 1928-07-05 | 1928-11-08 | Process for making raster copies |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE568183C (en) |
-
1928
- 1928-11-08 DE DED58288D patent/DE568183C/en not_active Expired
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