Photographic developer composition containing formaldehyde bisul

Details Photographic developer composition containing formaldehyde bisul Photographic developer composition containing formaldehyde bisul

1976-01-07

1977-01-11

Kimlin, Edward C.

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96 66HD, G03C 530

Patent

active

RE0291110

ABSTRACT:
Photographic developer composition for high-contrast elements comprising a dihydroxybenzene developing agent, a [carbonyl bisulfite-amine] formaldehyde bisulfite-alkanolamine condensation product and free [amine] alkanolamine. A continuous process for using the developer composition in a continuous transport processing machine is also described.

REFERENCES:
patent: 2388816 (1945-11-01), Bean
patent: 2757091 (1956-07-01), Oretzky
patent: 3232761 (1966-02-01), Allen et al.

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