Photothermographic material
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 15, 2003
Grant Date -
Jun 27, 2002
app pub date -
Apr 6, 2001
filing date -
Apr 7, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Disclosed is a photothermographic material containing a non-photosensitive silver salt and a photosensitive silver halide on a support, wherein the photosensitive silver halide is spectrally sensitized with a spectral sensitizing dye so that maximum spectral sensitivity wavelength could become longer than 730 nm and the conditions defined by the following formulas (1) and (2) and/or the conditions defined by the following formulas (3) and (4) could be satisfied: 300.gtoreq.S(.lambda. max)/S(.lambda. max+30 nm).gtoreq.4.5 Formula (1) 30.gtoreq.S(.lambda. max)/S(.lambda. max-30 nm).gtoreq.2 Formula (2) 300.gtoreq.Abs.(.lambda. max)/Abs.(.lambda. max-30 nm).gtoreq.4.5 Formula (3) 30.gtoreq.Abs.(.lambda. max)/Abs.(.lambda. max-30 nm).gtoreq.2 Formula (4) wherein, in the above formulas, .lambda.max denotes maximum spectral sensitivity wavelength, Abs.(.lambda.) denotes optical density at a wavelength of .lambda. and S(.lambda.) denotes spectral sensitivity at a wavelength of .lambda.. The photothermographic material of the present invention can form images with low fog and shows little increase of fog and sensitivity fluctuation during storage before light exposure.
First Claim
Other Claims data not available
