DE458216C - Process for the production of printing blocks by electroforming a photographic source image - Google Patents

Process for the production of printing blocks by electroforming a photographic source image

Info

Publication number
DE458216C
DE458216C DESCH81981D DESC081981D DE458216C DE 458216 C DE458216 C DE 458216C DE SCH81981 D DESCH81981 D DE SCH81981D DE SC081981 D DESC081981 D DE SC081981D DE 458216 C DE458216 C DE 458216C
Authority
DE
Germany
Prior art keywords
electroforming
production
source image
printing blocks
printing
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
DESCH81981D
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 DESCH81981D priority Critical patent/DE458216C/en
Application granted granted Critical
Publication of DE458216C publication Critical patent/DE458216C/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
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G03F7/06—Silver salts

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)

Description

Verfahren zur Herstellung von Druckstöcken unter galvanoplastischem Abformen - , eines photographischen Quellbilds.Process for the production of printing blocks under electroforming Impression -, a photographic source image.

Zusatz zum Patent 457410. \ ach dem Patent 1@ r. 457 4I o werden Druckstöcke in der Weise hergestellt, daß lichtempfindliche Silberschichten für die Herstellung von Quellungsbildern Verwendung finden, die sodann galvanoplastisch abgeformt werden. Es hat sich hierbei ergeben, daß vollkommen plastische Bilder nicht erzielt werden können. wenn ein photographisches Positiv-, egativ- oder Rasterbild unmittelbar aus-Ilewaschen, quellen gelassen und sodann galvanoplastisch abgeformt wird. Das erhaltene Reliefbild trägt nur eine verhältnismäßig bechränkte Anzahl der für den Druck bestimmten Punkte an den Erhöhungen, während die in den Tälern des Reliefs gelagerten Punkte für den Druck nicht ohne weiteres in Betracht kommen, so daß sich hierl:ei Bilder ergeben, welche die Halbtöne nicht zeigen.Addition to patent 457410. \ ach the patent 1 @ r. 457 4I o become printing blocks manufactured in such a way that photosensitive silver layers for manufacture of swelling images are used, which are then molded by electroforming. It has been found here that completely three-dimensional images are not achieved can. if a photographic positive, negative or halftone image is immediate Wash off, let swell and then electroformed. That The relief image obtained carries only a relatively limited number of the for the Pressure certain points on the ridges, while those in the valleys of the relief stored points for printing do not come easily into consideration, so that here: ei images which do not show the semitones.

Eine Verbesserung des Verfahrens besteht darin, daß die auf einem Film o. dgl. hergestellte Kopie eines Rasterpositivbildes vor dem Auswaschen und Ouellenlassen auf eine Glasplatte nach Art der"Abziehbilder verkehrt übertragen wird, wodurch alle für den Druck bestimmten Punkte in einer Ebene erhalten werden. Ein Druckstock, welcher durch galvanoplastisches Abformen eines derartigen Ouellungsbildes erhalten wird, liefert ein vollkommen plastisch wirkendes Bild. Die helle-. ren Stellen weisen schwächere Rasterpunkte auf, während an den dunkleren Stellen die Rasterpunkte kräftiger ausgebildet sind. Weiße bzw. dunkle Flecken werden vollkommen vermieden.An improvement in the method is that the on one Film or the like. Copy of a halftone positive image produced before washing out and Ouellen Lassen transferred upside down on a glass plate like the "decals" thereby keeping all the points intended for printing in one plane. A printing block, which by electroforming such an Ouellungsbildes is obtained, provides a completely three-dimensional image. The bright one-. ren Areas have weaker grid points, while the darker areas have the Grid points are more powerful. White or dark spots become perfect avoided.

Claims (1)

PATENTANSPRÜCII: Verfahren zur Herstellung von Druckstöcken nach Patent 457 4ro, dadurch gekennzeichnet, daß die auf einem Film o. dgl. hergestellte Kopie eines Rasterpositivbildes vor dem Auswaschen und Ouellenlassen auf eine Glasplatte verkehrt übertragen wird, wodurch alle für den Druck bestimmten Punkte in einer Ebene erhalten werden.PATENT APPLICATION II: Process for the production of printing blocks according to patent 457 4ro, characterized in that the copy produced on a film or the like of a raster positive image before washing out and leaving it on a glass plate is transferred backwards, which means that all dots intended for printing are in one Level to be obtained.
DESCH81981D 1927-03-07 1927-03-08 Process for the production of printing blocks by electroforming a photographic source image Expired DE458216C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH81981D DE458216C (en) 1927-03-07 1927-03-08 Process for the production of printing blocks by electroforming a photographic source image

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DESC081981 1927-03-07
DESCH81981D DE458216C (en) 1927-03-07 1927-03-08 Process for the production of printing blocks by electroforming a photographic source image

Publications (1)

Publication Number Publication Date
DE458216C true DE458216C (en) 1928-03-31

Family

ID=25993597

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH81981D Expired DE458216C (en) 1927-03-07 1927-03-08 Process for the production of printing blocks by electroforming a photographic source image

Country Status (1)

Country Link
DE (1) DE458216C (en)

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