Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...
Patent
1988-10-03
1989-12-12
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Transfer procedure between image and image layer, image...
Diffusion transfer process, element, or identified image...
430236, 430449, 430486, 430487, 549281, 549283, 549290, G03C 554, G03C 526, C07D31178
Patent
active
048867330
ABSTRACT:
This invention relates to diffusion transfer photographic processes adapted to be performed in the presence of ambient light and to diffusion transfer products useful in such processes wherein unexpectedly enhanced opacification in the red and near infrared region of the visible spectrum is achieved by employing phenanthrol/carboxynaphthol phthaleins as the light-absorbing, pH-sensitive optical filter agent for the longer wavelength region of the visible spectrum.
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patent: 3415644 (1968-12-01), Land
patent: 3415645 (1968-12-01), Land
patent: 3415646 (1968-12-01), Land
patent: 3647437 (1972-03-01), Land
patent: 3702244 (1972-11-01), Bloom et al.
patent: 3702245 (1972-11-01), Simon et al.
patent: 4456674 (1984-06-01), Cerankowski et al.
Campbell Sybil A.
Polaroid Corporation
Schilling Richard L.
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