Recording material
AssigneeMitsubishi Paper Mills Limited
InventorsToshihiko Matsushita, Shigetoshi Hiraishi, Sadao Morishita
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Abstract
A recording material containing as a color forming system (a) a colorless or light-colored dye precursor, and (b) an isocyanate compound having aromaticity, and if necessary (c) a color developer is excellent in image retention rates in terms of light resistance and plasticizer resistance and has a large degree of freedom of hues.
Claims18
A recording material consisting essentially of a two-component color forming system comprising:
- (a) a colorless or light colored dye precursor which is at least one member selected from the group consisting of triphenylmethanes, fluorans, diphenylmethanes, thiazines and spiropyrans, and
- (b) an isocyanate compound having aromaticity, said color forming system being carried on a substrate.
A recording material consisting essentially of a two-component color forming system comprising:
- (a) a colorless or light-colored dye precursor which is at least one member selected from the group consisting of triphenylmethanes, fluorans, diphenylmethanes, thiazines and spriopyrans, and
- (b) an isocyanate compound having aromaticity, said color forming system being carried on at least two different substrates separately depending on individual components.
A recording material consisting essentially of a three-component forming system comprising:
- (a) a colorless or light-colored dye precursor which is at least one member selected from the group consisting of triphenylmethanes, fluorans, diphenylmethanes, thiazines and spiropyrans,
- (b) an isocyanate compound having aromaticity, and
- (c) a color developer which can form a color by contacting with the dye precursor,
- said color forming system being carried on a substrate.
A recording material consisting essentially of a three-component color forming system comprising
- (a) a colorless or light-colored dye precursor which is at least one member selected from the group consisting of triphenylmethanes, fluorans, diphenylmethanes, thiazines and spriopyrans,
- (b) an isocyanate compound having aromaticity, and
- (c) a color developer which can form a color by contacting with the dye precursor,
- said color forming system being carried on at least two substrates separately depending on individual components.
A recording material consisting essentially of a two-component color forming system comprising:
- (a) a colorless or light colored dye precursor wherein the dye precursor is one or more compounds selected from 3,3-bis-(p-dimethylaminophenyl)-6-dimethylaminophthalide, 3-(4-diethylamino-2-ethoxyphenyl)-3-(1-ethyl-2-methylindol-3-yl)-4-azaphth alide, 3-diethylamino-6-methyl-7-chloro-fluoran, 3-diethylamino-7-chlorofluoran, 3-(N-cyclohexyl-amino)-7-methylfluoran, 3-diethylamino-7-methylfluoran, 3-diethylamino-6-chloro-7-methylfluoran, 3-diethylamino-7-anilinofluoran, 3-diethylamino-6-methyl-7-dibenzyl-aminofluoran, 3-(N-ethyl-N-p-toluidino)-7-anilinofluoran, 3-diethylamino-7-(O-chloroanilino)fluoran, 3dibutyl-amino-7-(O-chloroanilino)fluoran, 3-diethylamino-6-methyl-7-anilinofluoran, 3-(N-ethyl-N-p-toluidino)-6-methyl-7-anilinofluoran, 3-(N-methyl-N-cyclohexylamino)-6-methyl-7-anilinofluoran, 3-piperidino-6-methyl-7-anilinofluoran, 3pyrrolidino-6-methyl-7-anilinofluoran, 3-diethylamino-7-(m-trifluoromethylanilino)fluoran, 3-(N-ethyl-N-isopentylamino)-6-methyl-7-anilinofluoran, 3-diethylamino-6-methyl-7-(p-phenetidino)fluoran, and 3-dibutylamino-7-(O-fluoroanilino)fluoran, and
- (b) an isocyanate compound having aromaticity, said color forming system being carried on a substrate.
A recording material consisting essentially of a two-component color forming system comprising:
- (a) a colorless or light-colored dye precursor wherein the dye precursor is one or more compounds selected from 3,3-bis(p-dimethylaminophenyl)-6-dimethylaminophthalide, 3-(4-diethylamino-2-ethoxyphenyl)-3-(1-ethyl-2-methylindol-3-yl)-4-azaphth alide, 3-diethylamino-6-methyl-7-chloro-fluoran, 3-diethylamino-7-chlorofluoran, 3-(N-cyclohexylamino)-7-methylfluoran, 3-diethylamino-7methylfluoran, 3-diethylamino-6-chloro-7-methylfluoran, 3-diethylamino-7-anilinofluoran, 3-diethylamino-6-methyl-7-dibenzyl-aminofluoran, 3-(N-ethyl-N-p-toluidino)-7-anilinofluoran, 3-diethylamino-7-(O-chloroanilino)fluoran, 3-dibutylamino-7-(O-chloroanilino)fluoran, 3-diethylamino-6-methyl-7-anilinofluoran, 3-(N-ethyl-N-p-toluidino)-6-methyl-7-anilinofluoran, 3-(N-methyl-N-cyclohexylamino)-6-methyl-7-anilinofluoran, 3-piperidino-6-methyl-7-anilinofluoran, 3-pyrrolidino-6-methyl-7-anilinofluoran, 3-diethylamino-7-(m-trifluoromethylanilino)fluoran, 3-(N-ethyl-N-isopentylamino)-6-methyl-7-anilinofluoran, 3-diethylamino-6-methyl-7-(p-phenetidino)fluoran, and 3-dibutylamino-7-(O-fluoroanilino)fluoran, and
- (b) an isocyanate compound having aromaticity, said color forming system being carried on at least two different substrates separately depending on individual components.
Dependencies are inferred from the claim text.