DE568183C - Process for making raster copies - Google Patents

Process for making raster copies

Info

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
Application number
DED58288D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ERNST LOMBERG GmbH
Original Assignee
ERNST LOMBERG GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DED56112D external-priority patent/DE559685C/en
Application filed by ERNST LOMBERG GmbH filed Critical ERNST LOMBERG GmbH
Priority to DED58288D priority Critical patent/DE568183C/en
Application granted granted Critical
Publication of DE568183C publication Critical patent/DE568183C/en
Expired legal-status Critical Current

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)

PATENTANSPRUCH: Verfahren, gemäß Patent 559685 Rasterkopien herzustellen, dadurch gekennzeichnet, daß das Halbtonnegativ bzw. Halbtondiapositiv und Raster zusammen mit Maskenfolien vor die Ätzplatte geschaltet und nach dem Belichten Negativ oder Diapositiv allein bzw. Maskenfolien allein durch den Raster kopiert werden, und zwar bei gleichgültiger Reihenfolge der Belichtungen.PATENT CLAIM: Process to produce raster copies according to patent 559685, characterized in that the halftone negative or halftone slide and screen together with masking foils are placed in front of the etching plate and, after exposure, negative or slide alone or masking foils alone are copied through the screen, and that with indifferent Order of exposures.
DED58288D 1928-07-05 1928-11-08 Process for making raster copies Expired DE568183C (en)

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)

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