Method of developing photographic light-sensitive materials

Details Method of developing photographic light-sensitive materials Method of developing photographic light-sensitive materials

1986-10-15

1989-05-09

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Regenerating image processing composition

430399, 430421, 430436, 430437, 430264, G03C 524, G03C 530, G03C 554

Patent

active

048289680

ABSTRACT:
Silver halide photographic light-sensitive materials containing a hydrazine derivative is developed in high contrast by means of an automatic processor, wherein a replenisher less active than a starting developer used at the beginning of development is supplied in a predetermined amount per unit time and, in the case where further replenishment is done in excess of said predetermined amount in said unit time, a replenisher having activity substantially equivalent to that of said starting developer used at the beginning of development is then supplied. Stable treatment results are attained for a long time.

REFERENCES:
patent: 3970457 (1976-07-01), Parsonage
patent: 4025344 (1977-05-01), Allen et al.
patent: 4228234 (1980-10-01), Okutsu et al.
patent: 4297437 (1981-10-01), Kaneko et al.

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