Developer sheet for forming high density images

Details Developer sheet for forming high density images Developer sheet for forming high density images

1991-01-10

1991-07-23

Van Le, Hoa

Radiation imagery chemistry: process, composition, or product th

Microcapsule, process, composition, or product

430464, 430466, 430478, 430479, 503216, 503225, G03C 172

Patent

active

050343025

ABSTRACT:
A developer sheet useful in forming images having a high density comprising a support having front and back surfaces; and
a developer layer coated from a solution on said front surface, said developer layer comprising a particulate reactive material being capable of reacting with a substantially colorless chromogenic material upon contact and generating an image, a binder material, and a viscosity increasing additive is provided. The developer sheet is particularly useful in photosensitive microencapsulated imaging systems for forming overhead transparencies.

REFERENCES:
patent: 4115327 (1978-09-01), Kikuga et al.
patent: 4399209 (1983-08-01), Sanders
patent: 4578690 (1986-03-01), Veillette et al.
patent: 4775656 (1988-10-01), Harada et al.
patent: 4853364 (1989-08-01), Liang et al.
patent: 4877767 (1989-10-01), Liang et al.
Shelendich, "High-Rate Drying of Aqueous Air-Knife Coatings", TAPPI, 55, No. 3, pp. 420-423, 1972 (Abstract).
Fairchild et al., "Controlling Migration in Paper and Board Coatings", Invest. Tec. Papel 5, No. 15, pp. 53-72, 1968 (Abstract).

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