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EP0262567A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Negative colour-photographic film

Assignee: Agfa Gevaert AG
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Filing: 1987-09-23
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Granted: —
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Expires: 2007-09-23
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Abstract

Abstract Translated from German Die Empfindlichkeit farbfotografischer Negativfilme läßt sich ohne Verlust an Farbqualität und Schärfe steigern, wenn auf der dem Objekt zugewandten Seite des Films als oberste lichtempfindliche, Farbdichte liefernde Schicht zusätzlich wenigstens eine panchromatisch sensibili­sierte, hochempfindliche und schwarzkuppelnde Schicht angebracht ist, und das Negativmaterial soviel DIR-­Kuppler enthält, daß sich ein Interimage-Effekt von ≧ 10 % im Gelb-, ≧ 25 % im Purpur-und ≧ 15 % im Blaugrünbereich ergibt. The sensitivity of color photographic negative films can be increased without loss of color quality and sharpness if at least one panchromatically sensitized, highly sensitive and black-coupling layer is attached to the side of the film facing the object as the top photosensitive, color density-providing layer, and the negative material has as much DIR coupler contains that there is an interimage effect of ≧ 10% in the yellow, ≧ 25% in the purple and ≧ 15% in the blue-green area.

Inventors

  • 👤 Reinhart Matejec

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-27 06:09
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3041; G03C7/305; G03C7/30541; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158

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