Gas separation: apparatus – Electric field separation apparatus – Including gas flow distribution means
Patent
1977-12-16
1979-10-30
Kelley, Mary F.
Gas separation: apparatus
Electric field separation apparatus
Including gas flow distribution means
96 663, 96 664, 96 665, 96 60BF, G03C 530, G03C 532
Patent
active
041727282
ABSTRACT:
A photographic developer containing hydroquinone, an auxiliary developer such as phenidone, and high sulfite is formulated using an organic base such as diethanolamine. This is useful for processing litho film in rapid access machine processors to produce high contrast line and half-tone dot images from films processed therein.
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Wiederman, Science et Industries Photographiques, vol. 32, No. 4, 1961, pp. 97-107.
Pangratz William R.
Sincius Joseph A.
E. I. Du Pont de Nemours and Company
Kelley Mary F.
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