DE528638C - Process for the production of tanning images by post-treating the exposed layers with chromates - Google Patents
Process for the production of tanning images by post-treating the exposed layers with chromatesInfo
- Publication number
- DE528638C DE528638C DEK117731D DEK0117731D DE528638C DE 528638 C DE528638 C DE 528638C DE K117731 D DEK117731 D DE K117731D DE K0117731 D DEK0117731 D DE K0117731D DE 528638 C DE528638 C DE 528638C
- Authority
- DE
- Germany
- Prior art keywords
- chromates
- post
- production
- layers
- treating
- 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
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/18—Diazo-type processes, e.g. thermal development, or agents therefor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
Description
Verfahren zur Herstellung von Gerbbildern durch Nachbehandlung der belichteten Schichten mit Chromaten Gerbbilder lassen sich in der Weise herstellen, daß lichtempfindliche Kolloidschichten nach der Belichtung mit Chromaten behandelt werden. Das Chromat wird dabeivon den aus den lichtempfindlichen Substanzen entstandenen Umwandlungsprodukten, die an und für sich nicht oder nur unvollkommen das Kolloid in seiner Quellbarkeit verändern, reduziert, wodurch Gerbung des Kolloids eintritt. Als lichtempfindliche Substanzen hat man die verschiedenartigsten Stoffe angewandt, z. B. Metallsalze, Chinone, Diazoverbindungen u. a. (vgl. die deutsche Patentschrift 16o729 und die französische Patentschrift 659 74.9).Process for the production of tanning images by post-treatment of the exposed layers with chromates tanning patterns can be produced in the way that photosensitive colloid layers treated with chromates after exposure will. The chromate is derived from the photosensitive substances Conversion products which in and of themselves do not or only imperfectly form the colloid change in its swellability, reduced, whereby tanning of the colloid occurs. The most diverse substances have been used as light-sensitive substances, z. B. metal salts, quinones, diazo compounds and others. (see the German patent specification 16o729 and French patent specification 659 74.9).
Es wurde nun gefunden, daß eine intensivere Gerbung der Kolloide durch einen Zusatz von gewissen Metallsalzen zur Schicht oder zur Chromatlösung bewirkt wird. Hierdurch wird praktisch eine höhere Lichtempf ndlichkeit der Schichten erreicht; denn selbst an den Stellen, wo durch schwache Lichtwirkung nur äußerst geringe Mengen .an Umwandlungsprodukten vorhanden sind, wird noch eilte Gerbung des Kolloids erzielt, die durch Chromar allein nicht eintritt.It has now been found that the colloids are tanned more intensively causes an addition of certain metal salts to the layer or to the chromate solution will. This practically results in a higher light sensitivity of the layers; because even in the places where only extremely small amounts due to weak light effects .on conversion products are present, rapid tanning of the colloid is achieved, which does not occur through Chromar alone.
Es ist zwar bekannt, daß gewisse Metallsalze, wie Kupfer-, Kobalt-, Uransalze u. a., die Lichtempfindlichkeit von mit Bichromat sensibilisierten Schichten erhöhen (vgl. z. B. J. M. E d .e r »Das Pigmentverfahren, öl-, Bromöl- und Gummidruck- sowie verwandte photographische Kopierverfahren«, q.. Aufl. S. 13 [Verlag Wilhelm Knapp, Halle a. S. 1g26]). Doch war es überraschend, daß die 35 gleichen Salze, im besonderen Cersalze, bei der Nachbehandlung der Schichten mit Chromaren die Empfindlichkeit der Schichten steigern. Beispiele 1. Pigmentpapier oder Ätzpapier für Kupfertiefdruck wird mit einer haltbaren Diazoverbindung, zweckmäßig mit einer Diazoverbindung, die eine beliebig substituierte Aminogruppe enthält, z. B. mit dem Chlorcadmiumsalz des i-Diazo-q.-äthylamidonaphthalins, sensibilisiert, im Dunkeln getrocknet und belichtet.It is known that certain metal salts, such as copper, cobalt, Uranium salts and others, the photosensitivity of layers sensitized with bichromate increase (see e.g. J. M. E d .e r »The pigment process, oil, bromine oil and rubber printing as well as related photographic copying processes ", q .. ed. p. 13 [Verlag Wilhelm Knapp, hall a. P. 1g26]). But it was surprising that the 35 same salts, in particular cerium salts, in the aftertreatment of the layers with chromars, the sensitivity the layers increase. Examples 1. Pigment paper or etching paper for gravure printing is with a durable diazo compound, expediently with a diazo compound, which contains an arbitrarily substituted amino group, e.g. B. with the chlorocadmium salt of i-diazo-q.-ethylamidonaphthalene, sensitized, dried in the dark and exposed.
Diese Kopie überträgt man mit einem Bad, welches 2 0ö Kaliumbichromat und o, r oho Cerochlorid enthält, und entwickelt mit Wasser von etwa ¢o" C in der für Pigmentdrucke üblichen Weise.This copy is transferred with a bath containing 2% potassium dichromate and o, r oho contains cerium chloride, and develops with water of about ¢ o "C in the usual for pigment prints.
Die Lichtempfindlichkeit der mit dem Zusatz .an Cersalz übertragenen Kopie ist bedeutend größer als einer nur mit Bichromatlösung übertragenen.The photosensitivity of the transferred with the addition .an Cersalz Copy is significantly larger than one transferred with only bichromate solution.
2. to Gewichtsteile Gelatine, 2 Gewichtsteile Eisenoxydrot, i Gewichtsteil Dextrose, 0,3 GP-wichtsteile Cerochlorid, 3,5 Gewichtsteile z # 7-anthrachinondisulfosaures Natrium und So Raumteile Wasser werden zu reiner Emulsion verarbeitet und auf Papier gestrichen. Nach dem Trocknen belichtet man und überträgt mit einer 2%igen Kaliumbichromatlösung. Die Entwicklung erfolgt in der für Pigmentdrucke üblichen Weise. Die mit Zusatz von Cerosalzen hergestellte Schicht zeigt eine bessere Lichtempfindlichkeit als eine sonst gleich zusammengesetzte Schicht ohne diesen Zusatz.2. to parts by weight of gelatin, 2 parts by weight of red iron oxide, 1 part by weight of dextrose, 0.3 parts by weight of cerium chloride, 3.5 parts by weight of z # 7-anthraquinonedisulfonic acid sodium and 50 parts by volume of water are processed into a pure emulsion and painted on paper. After drying, it is exposed to light and transferred with a 2% potassium dichromate solution. The development takes place in the usual way for pigment prints. The layer produced with the addition of cerium salts shows better photosensitivity than an otherwise identically composed layer without this addition.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK117731D DE528638C (en) | 1929-11-29 | 1929-11-30 | Process for the production of tanning images by post-treating the exposed layers with chromates |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE117731 | 1929-11-29 | ||
DEK117731D DE528638C (en) | 1929-11-29 | 1929-11-30 | Process for the production of tanning images by post-treating the exposed layers with chromates |
Publications (1)
Publication Number | Publication Date |
---|---|
DE528638C true DE528638C (en) | 1931-07-02 |
Family
ID=25748656
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEK117731D Expired DE528638C (en) | 1929-11-29 | 1929-11-30 | Process for the production of tanning images by post-treating the exposed layers with chromates |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE528638C (en) |
-
1929
- 1929-11-30 DE DEK117731D patent/DE528638C/en not_active Expired
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