DE347748C - Process for the production of gelatin printing plates - Google Patents
Process for the production of gelatin printing platesInfo
- Publication number
- DE347748C DE347748C DE1920347748D DE347748DD DE347748C DE 347748 C DE347748 C DE 347748C DE 1920347748 D DE1920347748 D DE 1920347748D DE 347748D D DE347748D D DE 347748DD DE 347748 C DE347748 C DE 347748C
- Authority
- DE
- Germany
- Prior art keywords
- gelatin
- printing plates
- production
- exposed
- gelatin 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
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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/40—Treatment after imagewise removal, e.g. baking
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Printing Plates And Materials Therefor (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Herstellung von Gelatinedruckplatten, bei welchem eine lichtempfindliche Chromatgelatinemasse auf eine geeignete Unterlage gegossen wird. Nach S dem Trocknen dieser Masse wird die Zeichnung durch Lichtwirkung kopiert, wobei die belichteten Stellen derart gehärtet werden, daß dieselben gegen kaltes Wasser und Hitze unempfindlich werden. Die Kopie wird in kaltemThe invention relates to a method for producing gelatin printing plates, in which a photosensitive chromate gelatin mass is poured onto a suitable support. To When this mass dries, the drawing is copied by the action of light, with the exposed Places are hardened in such a way that they are insensitive to cold water and heat will. The copy will be in cold
ίο Wasser entwickelt, wodurch das Bild in Reliefform erhalten wird, indem die unbelichteten Teile quellen (Lichtdruckform).ίο water develops, whereby the image is obtained in relief form by removing the unexposed Parts swell (collotype form).
Um von den auf diese Weise hergestellten Gelatinedruckplatten Abzüge zu erhalten, ist es notwendig, dieselben unter Feuchtigkeit zu halten, da in trocknem Zustande kein druckbares Relief vorhanden sein würde.In order to obtain prints from the gelatin printing plates produced in this way, it is necessary to keep them under moisture, since nothing printable when dry Relief would be present.
Dies soll nach der Erfindung vermieden werden. Zu diesem Zweck wird die Chromatgelatineplatte nach der Belichtung und Entwicklung in kaltem Wasser der Einwirkung von trockener Hitze ausgesetzt, deren Grad sich nach der Schmelzbarkeit der unbelichteten Gelatine richtet. Bei. diesem einfachen Trockenprozeß bleibt das Relief in Form einer zusammenhängenden Folie dauernd erhalten, im Gegensatz zu dem bekannten, durch heißes Wasser erzielten Lösungsprozeß der Chromatgelatinc, bei welchem die unbelichteten Teile vollständig gelöst werden. Die Erhitzung kann z. B. dadurch geschehen, daß die belichtete und gequollene Gelatineplatte in einem Ofen der Hitze ausgesetzt wird, wobei die unbelichteten und in kaltem Wasser gequollenen Stellen weich werden und dann zusammenschrumpfen, derart, daß nunmehr im Verhältnis der Stärke der Gelatinefolie die durch das Licht gehärteten Stellen hoch und die unbelichteten Stellen tief hegen.This is to be avoided according to the invention. For this purpose, the chromate gelatin plate after exposure and development in cold water to the action of drier Exposed to heat, the degree of which depends on the meltability of the unexposed gelatin directs. At. This simple drying process keeps the relief in the form of a coherent one Foil is permanently preserved, in contrast to the known, by hot water achieved solution process of the Chromatgelatinc, in which the unexposed parts completely be solved. The heating can e.g. B. happen that the exposed and swollen Gelatin plate in an oven exposed to heat, the unexposed and places swollen in cold water soften and then shrink, in such a way that that now in the ratio of the thickness of the gelatin film those hardened by the light Place high and the unexposed areas low.
Die auf diese Weise erhaltene Gelatineplatte kann als Druckplatte nach Art von Klischees verwendet werden.The gelatin plate obtained in this way can be used as a printing plate in the manner of clichés be used.
Es ist bereits vorgeschlagen worden, Druckformen aus Halogensilbergelatine herzustellen, indem man eine Positivkopie in Pyrogallol hervorruft, nach dem Fixieren -und Wässern die Gelatineschicht mit Formalin härtet und dann unter Anwendung höherer Temperatur schnell trocknet. Auf diese Weise läßt sich aber eine für die Praxis brauchbare Druckform nicht erhalten.It has already been proposed to produce printing forms from halogen silver gelatine, by making a positive copy in pyrogallol, after fixing and washing the Gelatin layer with formalin hardens and then quickly using higher temperature dries. In this way, however, a printing form that can be used in practice cannot be used obtain.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE347748T | 1920-09-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE347748C true DE347748C (en) | 1922-01-24 |
Family
ID=33459981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1920347748D Expired DE347748C (en) | 1920-09-03 | 1920-09-03 | Process for the production of gelatin printing plates |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE347748C (en) |
| FR (1) | FR532015A (en) |
| GB (1) | GB168578A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2596754A (en) * | 1947-11-04 | 1952-05-13 | Eastman Kodak Co | Photomechanical copy method |
| BE485609A (en) * | 1947-11-04 | 1942-11-12 | ||
| US2692198A (en) * | 1950-08-11 | 1954-10-19 | Maurice D Whitney | Methods of producing half-tone printing plates |
| US2709654A (en) * | 1950-09-29 | 1955-05-31 | Adalbert B Guth | Thermographic method of producing relief and intaglio impressions |
| US3678850A (en) * | 1966-05-02 | 1972-07-25 | Xerox Corp | Porous printing plate prepared from particulate photosensitive resinous material |
-
1920
- 1920-09-03 DE DE1920347748D patent/DE347748C/en not_active Expired
-
1921
- 1921-02-03 FR FR532015D patent/FR532015A/en not_active Expired
- 1921-03-01 GB GB6697/21A patent/GB168578A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB168578A (en) | 1922-06-01 |
| FR532015A (en) | 1922-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE954127C (en) | Process for making photosensitive plates and printing plates from them | |
| DE347748C (en) | Process for the production of gelatin printing plates | |
| DE1572046B2 (en) | NEGATIVE COPY MATERIAL | |
| DE1622742B2 (en) | PROCESS FOR THE PRODUCTION OF PRINT FORMS AND RELIEF IMAGES | |
| AT91881B (en) | Process for the production of gelatin printing plates. | |
| US2532390A (en) | Preparation of a printing surface | |
| DE609659C (en) | Process for the production of high colloid reliefs for relief printing purposes | |
| US2366083A (en) | Manufacture and production of photographic sensitive material | |
| DE604973C (en) | Light-sensitive layer, especially for photography and reproduction | |
| CH97260A (en) | Process for the production of gelatin printing plates. | |
| DE397983C (en) | Process for the production of printing forms from hardened colloids | |
| AT103239B (en) | Process for the production of relief and gravure printing plates. | |
| AT94526B (en) | Process for converting silver images into dye images. | |
| DE428844C (en) | Process for the production of printing forms and master copies by reflex photography | |
| DE445078C (en) | Material and process for the production of photographic images and prints with an easily transferable, unreinforced and unhardened light-sensitive layer | |
| DE557278C (en) | Process for the production of color photographs by the simultaneous production of different partial images of an object in different superimposed light-sensitive layers | |
| US1532188A (en) | Lithographic printing plate and process of preparing the same | |
| AT46449B (en) | Process for producing blueprints using colloid layers impregnated with light-sensitive iron oxide salts and water-immiscible paints. | |
| DE1622742C (en) | Process for the production of printing forms and relief images | |
| US1583689A (en) | Engraving process | |
| AT136383B (en) | Process for the production of printing forms. | |
| DE630939C (en) | Process for the production of colloidal reliefs, of which high-pressure forms are produced by molding | |
| DE720006C (en) | Process for the production of positive or negative copy originals or flat printing forms of positives or negatives | |
| US921397A (en) | Process of making plates for printing or embossing. | |
| AT37881B (en) | Photosensitive plate fitted with a color filter and method for making the same. |