Record receiver having plural interactive leaves or a colorless – Having a colorless color-former – developer therefor – or... – Plural colors or plural diverse systems
Patent
1991-11-21
1993-06-15
Hess, B. Hamilton
Record receiver having plural interactive leaves or a colorless
Having a colorless color-former, developer therefor, or...
Plural colors or plural diverse systems
427146, 427148, 427150, 427152, 503201, 503208, 503209, 503217, 503225, 503226, B41M 5035, B41M 538
Patent
active
052198200
ABSTRACT:
A reversible thermosensitive recording material is composed of a support, and a reversible thermosensitive recording layer formed thereon, having a reversible temperature-dependent transparency, which contains a matrix resin and an organic low-molecular-weight material. The organic low-molecular-weight material is in the form of particles, and substantially covered by the matrix resin, and the content thereof in the reversible thermosensitive recording layer is increased from the surface side thereof toward the support side. This reversible thermosensitive recording material can be prepared by a method of coating a solution or dispersion of the matrix resin and the organic low-molecular-weight material on the support, which are dissolved or dispersed in a mixed solvent composed of at least two solvents, each having a different vapor pressure, and drying the solution or dispersion.
REFERENCES:
patent: 4695528 (1987-09-01), Dabisch et al.
Hotta Yoshihiko
Kawaguchi Makoto
Konagaya Yukio
Morohoshi Kunichika
Nogiwa Toru
Hess B. Hamilton
Ricoh & Company, Ltd.
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