Radiation imagery chemistry: process – composition – or product th – Post imaging processing – Physical developing
Patent
1989-01-23
1991-05-07
Miller, Stanley D.
Radiation imagery chemistry: process, composition, or product th
Post imaging processing
Physical developing
350317, 350350R, 430 7, G02F 1133, G02F 900, G02B 522
Patent
active
050131389
ABSTRACT:
In a liquid crystal display wherein a liquid crystal material is contained in a gap defined between two surfaces, at least one of the said facing surfaces of the gap is constructed by a multi-color relief layer obtained by the color-development of a single hydrophilic colloid silver halide emulsion layer. The relief layer has different regions of multiple different thicknesses corresponding to the plurality of colors thereof, the thickness of each such relief region being characteristic of the particular color of that region. Each different relief region contains a dye of the corresponding color derived from a color coupling agent by the color development and a diffusion-resistant colorless compound derived from a colorless coupling agent by said color development. The colorless compound is present in each relief region in an amount which is different from that in each other relief region and is characteristic of that region. The different thicknesses of the relief layer are so determined in relation to the wave lengths of the corresponding colors that an improvement in visual contrast between electrically energized and electrically non-energized regions of the display is obtained.
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patent: 4271246 (1981-06-01), Sato et al.
patent: 4294900 (1981-10-01), Aono
patent: 4632514 (1986-12-01), Ogawa et al.
patent: 4780403 (1988-10-01), Kishimoto et al.
patent: 4808501 (1989-02-01), Chiulli
de Meyer Marcellus H.
Monbaliu Marcel J.
Roosen Raymond A.
AGFA-GEVAERT N.V.
Daniel William J.
Gross Anita Pellman
Miller Stanley D.
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