Imaging process based on change of optical covering power

Details Imaging process based on change of optical covering power Imaging process based on change of optical covering power

1998-06-19

1999-11-16

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Dye image from radiation sensitive dye or dye former by dry...

430138, 430338, 430346, 430348, 430964, 346 761, G01D 1510, G03C 516, G03C 556

Patent

active

059855266

ABSTRACT:
A method of forming an image comprising imagewise-exposing a thermal recording element to heat, the element comprising a support having thereon a thermally-sensitive layer comprising particles containing a colorant, the particles having a particle size between about 1 and about 25 .mu.m suspended in a matrix, the layer having an optical density no higher than about 0.5, the heating thereby causing the colorant to spread out from the particles into the matrix, thus increasing the optical density in the imagewise-exposed areas.

REFERENCES:
patent: 3322557 (1967-05-01), Schwab
patent: 3539375 (1970-11-01), Baum
patent: 4621040 (1986-11-01), Viola
patent: 5427886 (1995-06-01), Miller et al.

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