Diazo photographic materials containing 2-hydroxy 3-naphthanilid

Details Diazo photographic materials containing 2-hydroxy 3-naphthanilid Diazo photographic materials containing 2-hydroxy 3-naphthanilid

1975-08-27

1977-10-18

Bowers, Jr., Charles L.

Gas separation: apparatus

Electric field separation apparatus

Electrode retaining or supporting means

96 49, 260560, G03C 158

Patent

active

040544567

ABSTRACT:
Pure-blue images are obtained by developing a diazo photographic material containing a photosensitive diazonium compound in the presence of a coupler capable of forming a blue dye by coupling with the photosensitive diazonium compound, the coupler being represented by the general formula ##STR1## wherein R.sub.1 represents ##STR2## (wherein R.sub.2 and R.sub.3 each represents a hydrogen atom, a halogen atom or an alkyl group having 1-4 carbon atoms), --COR.sub.4 (wherein R.sub.4 represents an alkyl group having 1-4 carbon atoms or substituted or unsubstituted phenyl group, or ##STR3## (WHEREIN N REPRESENTS 1 OR 2) OR BY THE GENERAL FORMULA ##STR4## wherein R.sub.5 represents a hydrogen atom, an alkyl group having 1-4 carbon atoms or ##STR5## (WHEREIN N REPRESENTS 1 OR 2).

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Dinaburg, M. S., "Photosensitive Diazo Compounds," The Focal Press, 1965, p. 105.
Landau, R., "Fascicules 9217," Andrews Paper & Chem. Co. Inc., 1962, p. 65.

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