DE150929C - - Google Patents

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Publication number
DE150929C
DE150929C DENDAT150929D DE150929DA DE150929C DE 150929 C DE150929 C DE 150929C DE NDAT150929 D DENDAT150929 D DE NDAT150929D DE 150929D A DE150929D A DE 150929DA DE 150929 C DE150929 C DE 150929C
Authority
DE
Germany
Prior art keywords
paper
better
layer
photosensitive
developer
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.)
Active
Application number
DENDAT150929D
Other languages
German (de)
Publication of DE150929C publication Critical patent/DE150929C/de
Active legal-status Critical Current

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00Photosensitive materials
    • G03C1/64Compositions containing iron compounds as photosensitive substances

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Color Printing (AREA)

Claims (1)

wn. bet.wn. bet. Sli-ujcjjfaqi" hex SaA\w\\%\\i\c\ Sli-ujcjjfaqi " hex SaA \ w \\% \\ i \ c \ fi'fi ' KAISERLICHESIMPERIAL PATENTAMT.PATENT OFFICE. Es gibt bekanntlich eine Art lichtempfindlicher Kopierpapiere, wie z. B. das Gallus-Eisen-Pos'itivwasserbadpapier, bei welchem die lichtempfindliche Schicht (ein Gemisch von Eisensalzen mit organischen Säuren nebst einem Bindemittel) auf ein an und für sich sehr glattes (stark satiniertes) hartes Rohpapier (zumeist sogen. Α-Stoff) aufgetragen wird. Auf diesem befindet sich also noch eine ebenfallsIt is known that there is a type of photosensitive copier paper, such as e.g. B. the Gallus-Eisen-Pos'itiv-Wasserbadpapier, in which the photosensitive layer (a mixture of iron salts with organic acids together with a binding agent) on a very smooth (strongly satined) hard base paper (mostly sucked Α fabric) is applied. So there is another one on top of it as well ίο sehr glatte und auch harte Schicht (die Präparation). Zur Herstellung eines in Wasser entwickelnden Papieres wird auf diese der Entwickler (Gallussäure, mit oder ohne Zusätze) in Pulverform direkt in bekannter Weise, sei es mit Filzwalzen oder anderen Reibern, unter ziemlich starkem Druck aufgerieben. Je besser dies gelingt und je mehr Pulver haften bleibt, desto besser entwickelt das betreffende Papier.ίο very smooth and also hard layer (the preparation). To produce a paper that develops in water, the developer (gallic acid, with or without additives) in powder form directly in a known manner, be it with felt rollers or other rubbers, rubbed on under fairly strong pressure. The better this succeeds and the more powder sticks, the better it develops the paper in question. Es ist aber bekanntlich oft recht schwer, genügend Entwickler aufzureiben, ohne durch zu großen Druck der Reiber das präparierte Papier, besonders bei raschem Maschinengange, zu beschädigen und dessen Haltbarkeit zu gefährden.But it is well known that it is often quite difficult to rub off enough developer without going through Excessive pressure of the reamers on the prepared paper, especially when the machine is running quickly, damage and endanger its durability. Diesem Übelstande und den verschiedenen anderen daraus folgenden soll das neue Verfahren abhelfen.The new method is intended to address this inconvenience and the various others that follow from it remedy. Es besteht in der Anwendung bezw. Herstellung einer Körnung vor oder besser nach dem Überziehen des Rohpapieres mit der lichtempfindlichen Schicht durch geeignete Maschinen oder Vorrichtungen, wodurch erreicht wird, daß der Entwickler in genügender Menge auf der Schicht haften bleibt, so daß die Entwickelungsfähigkeit wie auch die Haltbarkeit wesentlich erhöht wird.It consists in the application respectively. Production of a grain before or better after the coating of the base paper with the photosensitive layer by suitable means Machines or devices, whereby it is achieved that the developer in sufficient Amount remains adhered to the layer, so that the developability as well as the Durability is increased significantly. Patent-A ν Spruch:Patent-A ν saying: Verfahren zur Herstellung von Gallus-Eisen-Lichtpauspapieren, auf welche behufs Entwicklung in Wasser die Entwickelungssubstanz trocken aufgetragen ist, dadurch gekennzeichnet, daß das Papier vor oder nach dem Auftragen der lichtempfindlichen Eisensalzschicht gekörnt wird, um mittels dieser Körnung die trocken aufzubringende Entwickelungssubstanz besser aufnehmen und festhalten zu können.Process for the production of Gallus-Eisen-tracing papers, to which the developing substance is applied dry for development in water, characterized in that the paper before or after the application of the photosensitive Iron salt layer is grained in order to use this grain to dryly apply the developing substance to be able to absorb and hold on better.
DENDAT150929D Active DE150929C (en)

Publications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1167650B (en) * 1960-08-22 1964-04-09 Polaroid Corp Multilayer photographic material suitable for multicolor diffusion processes with developer substances in the emulsion layer
DE1182065B (en) * 1962-06-27 1964-11-19 Gevaert Photo Prod Nv Process for the production of a transfer image according to the silver complex diffusion transfer process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1167650B (en) * 1960-08-22 1964-04-09 Polaroid Corp Multilayer photographic material suitable for multicolor diffusion processes with developer substances in the emulsion layer
DE1182065B (en) * 1962-06-27 1964-11-19 Gevaert Photo Prod Nv Process for the production of a transfer image according to the silver complex diffusion transfer process

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