DE471691C - Process for the production of autotypes according to - Google Patents

Process for the production of autotypes according to

Info

Publication number
DE471691C
DE471691C DED54005D DED0054005D DE471691C DE 471691 C DE471691 C DE 471691C DE D54005 D DED54005 D DE D54005D DE D0054005 D DED0054005 D DE D0054005D DE 471691 C DE471691 C DE 471691C
Authority
DE
Germany
Prior art keywords
autotypes
production
raster
secondly
firstly
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
DED54005D
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to DED54005D priority Critical patent/DE471691C/en
Application granted granted Critical
Publication of DE471691C publication Critical patent/DE471691C/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
    • G03F5/00—Screening processes; Screens therefor
    • G03F5/22—Screening processes; Screens therefor combining several screens; Elimination of moiré

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printing Methods (AREA)

Description

Verfahren zur Herstellung von Autotypien gemäß Patent 457 654 Zusatz zum Patent 457 654 Durch das Patent 457 654 ist ein Verfahren geschützt, bei dem erstens ein Halbtonnegativ und zweitens ein Skalenraster oder in umgekehrter Reihenfolge auf die Ätzplatte kopiert werden. Dabei ist es unausbleiblich, daß die dunkleren Töne völliger Schwärzung ausgesetzt sind, was drucktechnische Schwierigkeiten hervorruft. Diesem Übelstand begegnet man nach der vorliegenden Erfindung dadurch, daß bei dem Kopieren des Halbtonnegativs ein Raster vor- oder zwischengeschaltetwird,und zwar soll dieserRaster nicht eigentlich als zerlegendeslMedium dienen, sondern zur Hauptsache lediglich die Aufhellung drr dunklerenTönebezwecken. Er soll deshalb nach der Erfindung im Gegensatz zu dem Verfahren des Patents 457 203 nicht ein aus mehreren Tönen gebildeter Raster sein, sondern außer den lichtdurchlässigen Stellen nur einen einzigen Ton besitzen. Ist dieser nicht völlig opak, so vermehrt er den Tonreichtum, während ein opaker Raster ihn beschränkt.Process for the production of autotypes according to patent 457 654 Addendum to patent 457 654 The patent 457 654 protects a process in which firstly a halftone negative and secondly a scale grid or in reverse order are copied onto the etching plate. It is inevitable that the darker tones are exposed to complete blackening, which causes printing difficulties. According to the present invention, this disadvantage is countered by inserting a screen in front of or in between when copying the halftone negative. Therefore, according to the invention, in contrast to the method of patent 457 203, it should not be a grid formed from several tones, but rather only have a single tone apart from the translucent areas. If this is not completely opaque, it increases the tonal richness, while an opaque grid limits it.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Autotypien gemäß Patent 457 654, dadurch gekennzeichnet, claß erstens ein Halbtonnegativ zusammen mit einem einen einzigen Ton besitzenden Raster und zweitens ein Skalenraster oder in umgekehrter Reihenfolge auf die Ätzplatte kopiert werden.PATENT CLAIM: Process for the production of autotypes according to patent 457 654, characterized in that firstly a semitone negative together with one a single tone raster and secondly a scale raster or vice versa Order to be copied onto the etching plate.
DED54005D 1927-09-29 1927-09-30 Process for the production of autotypes according to Expired DE471691C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED54005D DE471691C (en) 1927-09-29 1927-09-30 Process for the production of autotypes according to

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DED0054005 1927-09-29
DED54005D DE471691C (en) 1927-09-29 1927-09-30 Process for the production of autotypes according to

Publications (1)

Publication Number Publication Date
DE471691C true DE471691C (en) 1929-02-16

Family

ID=25972600

Family Applications (1)

Application Number Title Priority Date Filing Date
DED54005D Expired DE471691C (en) 1927-09-29 1927-09-30 Process for the production of autotypes according to

Country Status (1)

Country Link
DE (1) DE471691C (en)

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