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
1988-08-08
1990-07-17
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...
427150, 503214, 503215, 503217, B41M 518
Patent
active
049421506
ABSTRACT:
A heat-sensitive recording material is disclosed. The material comprises a support having provided on the same surface thereof microcapsules containing a basic colorless dye and an organic solvent, and a developer capable of reacting with the basic colorless dye to develop a color, the capsule walls of said microcapsules being impermeable to either of the basic colorless dye and the developer at room temperature but becoming permeable to the colorless dye and/or the developer upon application of heat. The organic solvent is a compound containing at least two benzene rings in the molecule thereof with a total number of at least one hetero atom selected from nitrogen, sulfur, oxygen and phosphorus atoms, if any, being less than 1/10 a total number of carbon atoms of the organic solvent. The material is excellent in preservability before and after recording and is excellent in heat-developability.
REFERENCES:
patent: 4233178 (1980-11-01), Fuchigami
patent: 4598035 (1986-07-01), Usami et al.
Kiritani Masataka
Tanaka Toshiharu
Usami Toshimasa
Fuji Photo Film Co. , Ltd.
Hess Bruce H.
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