Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Identified solvent or dispersant for color-former – other...
Patent
1988-07-15
1990-04-17
Hess, Bruce H.
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Identified solvent or dispersant for color-former, other...
427151, 503216, 503220, 503223, B41M 516, B41M 522
Patent
active
049180452
ABSTRACT:
A recording material comprising a support, a microcapsule containing a substantially colorless electron-donating color former and a solvent, and an electron-accepting developer, wherein the color former is at least one selected from p-substituted aminophenylindolylphthalide derivatives, p-substituted aminophenylindolylazaphthalide derivatives and p-substituted aminophenylindolyldiazaphthalide derivatives, the solvent is a paraffin oil, and the amount of the solvent is at least 20% by weight based on the weight of the core substance.
Iwakura Ken
Matsuoka Katsumi
Saeki Keiso
Takashima Masanobu
Fuji Photo Film Co. , Ltd.
Hess Bruce H.
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