Process for preparation of heat-sensitive diazo microcapsule rec

Details Process for preparation of heat-sensitive diazo microcapsule rec Process for preparation of heat-sensitive diazo microcapsule rec

1988-07-13

1989-09-12

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Microcapsule, process, composition, or product

430151, 430168, 430327, 430494, 503200, 503214, 503226, B41M 518, G03C 152, B32B 326

Patent

active

048659398

ABSTRACT:
A process for the production of a heat-sensitive recording material in which a color former causing a color formation reaction and a developer forming color on reaction with the color former are incorporated in a heat-sensitive recording layer, and at least one of the color former and the developer is contained in microcapsules having walls which are impermeable to both the color former and the developer at ordinary temperature but which becomes permeable to at least one of the color former and the developer on heating, where the heat-sensitive recording layer is coated on a support which is then subjected to surface treatment by passing it through a pressure applying apparatus comprising a metallic roll and an elastic roll in such a manner that the heat-sensitive recording layer is in contact with the metallic roll.

REFERENCES:
patent: 2595916 (1982-05-01), Bartels
patent: 2691587 (1954-10-01), Greig
patent: 3203797 (1965-08-01), Muller
patent: 4032690 (1977-06-01), Kohmura et al.
patent: 4411979 (1983-10-01), Nagamoto et al.
patent: 4454521 (1984-06-01), Suguro et al.
patent: 4497887 (1985-02-01), Watanabe et al.
patent: 4598035 (1986-07-01), Usami et al.
patent: 4654256 (1987-03-01), Doree et al.

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