DE278169C - - Google Patents

Info

Publication number
DE278169C
DE278169C DENDAT278169D DE278169DA DE278169C DE 278169 C DE278169 C DE 278169C DE NDAT278169 D DENDAT278169 D DE NDAT278169D DE 278169D A DE278169D A DE 278169DA DE 278169 C DE278169 C DE 278169C
Authority
DE
Germany
Prior art keywords
covered
cones
plates
valleys
asphalt
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.)
Active
Application number
DENDAT278169D
Other languages
German (de)
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.)
Publication of DE278169C publication Critical patent/DE278169C/de
Active 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
    • G03F5/00—Screening processes; Screens therefor
    • G03F5/02—Screening processes; Screens therefor by projection methods
    • G03F5/12—Screening processes; Screens therefor by projection methods using other screens, e.g. granulated screen

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Laminated Bodies (AREA)

Description

BERLIN GEDRUCKT IN DER REICHSDRUCKEREI,BERLIN PRINTED IN THE REICHSDRUCKEREI,

Claims (1)

Patent-AnSpruch:Patent claim: 5555 Verfahren zur Herstellung von Rastern für Halbtonbilder aus gekörnten Platten aus plastischem Material, dadurch gekennzeichnet, daß diese Platten mit einer undurchsichtigen Lösung von Asphalt o. dgl. überzogen werden, welche von den in Form regelmäßiger kleiner Kegel angeordneten Erhöhungen auf dem Raster nach den Tälern zwischen diesen Kegeln abfließt.Process for the production of screens for halftone images from grained plates made of plastic material, characterized in that these plates are covered with an opaque Solution of asphalt o. The like. Are covered, which of the arranged in the form of regular small cones Raises on the grid after the valleys between these cones drains.
DENDAT278169D 1913-03-31 Active DE278169C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191307572T 1913-03-31

Publications (1)

Publication Number Publication Date
DE278169C true DE278169C (en)

Family

ID=32644127

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT278169D Active DE278169C (en) 1913-03-31

Country Status (3)

Country Link
DE (1) DE278169C (en)
FR (1) FR456510A (en)
GB (1) GB191307572A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2351438A1 (en) * 1976-05-12 1977-12-09 Buckley Raymond Cellular half tone screen - is built up of pyramid elements in contact to give homogeneous image and reduce need to retouch

Also Published As

Publication number Publication date
GB191307572A (en) 1914-03-31
FR456510A (en) 1913-08-28

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