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EP0025775A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for the production of a monochromatic colour image, and photographic material suited therefor

Assignee: Novartis AG
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Filing: 1980-09-12
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Granted: —
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Expires: 2000-09-12
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Abstract

Abstract Translated from German Photographisches Material zur Herstellung eines monochromatischen Farbbilds mit mindestens einer lichtempfindlichen Silberhalogenidemulsionsschicht, die einen Gelbkuppler und eine geringe Menge eines reaktionsfähigeren Kupplers enthält. Es wird ein farbiges Bild erzeugt, wofür Schwarzweisspapier nicht empfindlich ist. Der reaktionsfähigere Kuppler verringert die Schleierbildung an den Spitzlichtstellen. Photographic material for producing a monochromatic color image with at least one photosensitive silver halide emulsion layer containing a yellow coupler and a small amount of a more reactive coupler. A colored image is created, for which black and white paper is not sensitive. The more reactive coupler reduces fogging at the highlights. Vorzugsweise befinden sich in der (den) lichtempfindlichen Schicht(en) geringe Mengen weiterer Kuppler, welche zu einem grünen oder braunen Bild führen, das dem Benutzer die Scharfeinstellung erleichtert. Preferably, there are small amounts of further couplers in the light-sensitive layer (s), which result in a green or brown image, which makes it easier for the user to focus.

Inventors

  • 👤 John Gabriel Valentine Scott
  • 👤 Anthony Keith Harvey

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-29 02:55
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30

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