DE543963C - Process for the production of printing forms for stone and offset printing by direct copying of positive templates - Google Patents

Process for the production of printing forms for stone and offset printing by direct copying of positive templates

Info

Publication number
DE543963C
DE543963C DEW77658D DEW0077658D DE543963C DE 543963 C DE543963 C DE 543963C DE W77658 D DEW77658 D DE W77658D DE W0077658 D DEW0077658 D DE W0077658D DE 543963 C DE543963 C DE 543963C
Authority
DE
Germany
Prior art keywords
printing
stone
production
direct copying
offset 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
DEW77658D
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 DEW77658D priority Critical patent/DE543963C/en
Application granted granted Critical
Publication of DE543963C publication Critical patent/DE543963C/en
Expired legal-status Critical Current

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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
    • G03F7/04—Chromates

Landscapes

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

Description

Verfahren zur Herstellung von Druckformen für den Stein- und Offsetdruck durch unmittelbares Kopieren von positiven Vorlagen Die vorliegende Erfindung ist ein Verfahren, das die Herstellung von Flachdruckformen durch unmittelbares Kopieren von positiven Vorlagen darstellt. Es unterscheidet sich im Ergebnis von Verfahren ähnlicher Art dadurch, daß es Druckformen für den Stein- und Offsetdruck liefert, bei denen das Druckbild tiefer liegt als die Farbe abstoßenden Teile, die aus einer wasserunlöslichen Gummischicht bestehen.Process for the production of printing forms for stone and offset printing by direct copying of positive originals The present invention is a process involving the manufacture of planographic printing forms by direct copying of positive templates. It differs in outcome from procedure of a similar kind in that it supplies printing forms for stone and offset printing, in which the printed image is deeper than the color-repellent parts that consist of a water-insoluble rubber layer.

Nach erfolgter Belichtung werden die unbelichteten Stellen der aufgetragenen Schicht herausgewaschen, während die belichteten Stellen als wasserunlösliche Kolloidteile zurückbleiben. Das Druckbild liegt um die Stärke dieser wasserunlöslichen Schicht vertieft und wird dadurch geschützt. Es werden also ohne Tiefätzung Druckformen hergestellt, die denen des Tiefdruckverfahrens ähneln.After exposure has taken place, the unexposed areas become the applied Layer washed out, while the exposed areas as water-insoluble colloid parts lag behind. The print image is around the thickness of this water-insoluble layer deepened and is thereby protected. So there are printing forms without deep etching which are similar to those of the gravure printing process.

Das Verfahren geht vor sich, indem auf die Druckplatte aus Zink, Aluminium oder Stein eine Lösung gebracht wird, die zu bestimmten Teilen aus Kaliumbichromat, Eosin oder gleichwirkendem Farbstoffe, Gummiarabikum und Wasser besteht. Ist diese auf der Druckplatte getrocknet, so wird die zu kopierende positive Vorlage daraufgelegt und durch Belichtung kopiert. Dabei wird die geringste Unterstrahlung des Lichtes von der roten Farbe so aufgesaugt, daß die unter den Bildteilen liegende Schicht vollkommen unverändert bleibt, während die vom Licht getroffenen Stellen durch eine entsprechende Belichtungszeit derart gegerbt werden, daß sie mit Wasser nicht gelöst werden können. Da sich aber die Kopierzeit nach der Deckung der Vorlage richtet, so ist nach dem Herauswaschen der unbelichteten Stellen eine Nachbelichtung der Kolloidteile in den meisten Fällen nötig, um diese wasserunlöslich zu machen.The process is done by putting on the zinc, aluminum pressure plate or stone a solution is brought, which in part consists of potassium dichromate, Eosin or equivalent dyes, gum arabic and water. Is this dried on the printing plate, the positive original to be copied is placed on it and copied by exposure. Thereby the slightest under-radiation of the light so absorbed by the red paint that the layer lying under the parts of the picture remains completely unchanged, while the areas hit by the light are replaced by a appropriate exposure time are tanned in such a way that they are not dissolved with water can be. However, since the copying time depends on the coverage of the original, after washing out the unexposed areas, a post-exposure is the Colloid parts are necessary in most cases to make them insoluble in water.

Um für das Herauswaschen der unbelichteten Teile größte Sicherheit zu haben, wird dazu eine zu gleichen Teilen bestehende Lösung aus Chlorcalcium mit Glycerin verwendet.In order to ensure maximum safety for washing out the unexposed parts to have an equal parts solution of calcium chloride with Glycerin used.

Die durch Herauswaschung schichtfrei gewordenen Stellen werden Farbe haltend gemacht, indem man sie in einer der bisher üblichen Arten fettempfänglich macht.The areas that have become stratified by washing out become color made sustained by making them fat-receptive in one of the previously usual ways power.

Claims (1)

YATI;NTANSPRUCII: Verfahren zur Herstellung von Druckformen für den Stein- und Offsetdruck durch unmittelbares Kopieren von positiven Vorlagen, dadurch gekennzeichnet, daß eine Chromatgummischicht unter Zusatz von Eosin oder gleichwirkendem Farb- Stoffe auf die Druckplatten aus Zink, Aluminium sowie Stein gebracht, nach deren Belichtung entwickelt wird, und daß die zurückgebliebenen Kolloidteile durch weitere Belichtung bis zar Wasserunlöslichkeit so gehärtet werden, daß sie als Farbe abstoßende Schicht beim Drucken benutzt werden können und die druckenden Stellen dadurch tiefer liegen, ohne tief geätzt zu sein.YATI; NTANSPRUCII: Process for the production of printing forms for the Stone and offset printing by direct copying of positive originals, thereby characterized in that a chromate rubber layer with the addition of eosin or equivalent Color Substances on the pressure plates made of zinc, aluminum and stone brought, after the exposure is developed, and that the remaining colloid parts are hardened by further exposure until they are insoluble in water can be used as a color-repellent layer in printing and the printing This allows places to lie deeper without being deeply etched.
DEW77658D 1927-11-14 1927-11-15 Process for the production of printing forms for stone and offset printing by direct copying of positive templates Expired DE543963C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW77658D DE543963C (en) 1927-11-14 1927-11-15 Process for the production of printing forms for stone and offset printing by direct copying of positive templates

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEW0077658 1927-11-14
DEW77658D DE543963C (en) 1927-11-14 1927-11-15 Process for the production of printing forms for stone and offset printing by direct copying of positive templates

Publications (1)

Publication Number Publication Date
DE543963C true DE543963C (en) 1932-02-12

Family

ID=26003122

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW77658D Expired DE543963C (en) 1927-11-14 1927-11-15 Process for the production of printing forms for stone and offset printing by direct copying of positive templates

Country Status (1)

Country Link
DE (1) DE543963C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE955927C (en) * 1952-05-03 1957-01-10 Bekk & Kaulen Chem Fab G M B H Photomechanical process for the production of etched metal printing forms using a two-layer process
DE1067690B (en) * 1954-04-05 1959-10-22 Time Inc Solution for developing irradiated polyamide printing plates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE955927C (en) * 1952-05-03 1957-01-10 Bekk & Kaulen Chem Fab G M B H Photomechanical process for the production of etched metal printing forms using a two-layer process
DE1067690B (en) * 1954-04-05 1959-10-22 Time Inc Solution for developing irradiated polyamide printing plates

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