Heat developable and stabilizable photographic materials and pro

Details Heat developable and stabilizable photographic materials and pro Heat developable and stabilizable photographic materials and pro

1978-10-30

1980-06-10

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Thermographic process

Heat applied after imaging

430353, 430448, 430607, 430617, 430955, 430964, G03C 538, G03C 102

Patent

active

042073928

ABSTRACT:
An activator-stabilizer precursor which comprises a certain acylhydrazine which releases a base moiety upon being heated to a temperature above about 130.degree. C. provides improved heat developable and heat stabilizable photographic materials comprising, in binder, and in reactive association, (a) a photosensitive silver salt, (b) a photosensitive silver salt developing agent, and (c) a stabilizing concentration of the described activator-stabilizer precursor having an acid portion and a base portion. The heat developable and heat stabilizable photographic element provides essential freedom from visual crystal formation in the processed photographic element. After imagewise exposure, a developed and stabilized image can be produced in the photographic element by heating the element to processing temperature.

REFERENCES:
patent: 3152904 (1964-10-01), Sorensen et al.
patent: 3442682 (1969-05-01), Fukawa
patent: 3457075 (1969-07-01), Morgan et al.
patent: 3468664 (1969-09-01), Stewart
patent: 3547634 (1970-12-01), Hori et al.
patent: 3667958 (1972-06-01), Evans
patent: 3730727 (1973-05-01), Olivares et al.
patent: 3782949 (1974-01-01), Olivares et al.
patent: 4030925 (1977-06-01), Leone et al.
patent: 4060420 (1977-11-01), Merkel et al.
patent: 4088496 (1978-05-01), Merkel
Product Licensing Index, vol. 92, Dec. 1971, Publication 9232.
Research Disclosure, vol. 170, Jun. 1978, item 17029.

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