Heat developable light-sensitive material containing an amidine

Details Heat developable light-sensitive material containing an amidine Heat developable light-sensitive material containing an amidine

1988-08-25

1992-03-03

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430203, 430619, 430955, G03C 102

Patent

active

050932292

ABSTRACT:
A heat developable light-sensitive material comprising a support having thereon at least one layer containing a base precursor, a lgiht-sensitive silver halide, a binder, and a dye-providing substance which produces or releases a diffusible dye in correspondence or countercorrespondence to the reduction of the light-sensitive silver halide to silver at an elevated temperature, the base precursor comprising a salt of a carboxylic acid and a diacidic, triacidic or tetraacidic organic base comprising a hydrocarbon group or a heterocyclic group substituted with 2 to 4 amidine groups represents by formula (I-2): ##STR1## wherein R.sup.15, R.sup.16 and R.sup.17 are as defined in the specification. The heat developable light-sensitive material has excellent age preservability and provides a high sensitivity and low-fog image.

REFERENCES:
patent: 3493374 (1970-02-01), Roncken et al.
patent: 4060420 (1977-11-01), Merkel et al.
patent: 4088496 (1978-05-01), Merkel
patent: 4560763 (1985-12-01), Sato et al.
patent: 4626500 (1986-12-01), Sato et al.
patent: 4639418 (1987-01-01), Yabuki et al.

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