ELECTROPHOTOGRAPHIC SENSITIVE BODY

PURPOSE:To obtain high sensitivity and superior potential stability even at the time of repeated use by forming a photosensitive layer contg. a specified azo pigment. CONSTITUTION:A photosensitive layer contg. an azo pigment represented by formula 1 or 2 is formed. The azo pigment represented by the...

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Bibliographic Details
Main Authors MIYAZAKI HAJIME, MIYAJI TOSHIE, KASHIZAKI YOSHIROU
Format Patent
LanguageEnglish
Published 13.08.1992
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:PURPOSE:To obtain high sensitivity and superior potential stability even at the time of repeated use by forming a photosensitive layer contg. a specified azo pigment. CONSTITUTION:A photosensitive layer contg. an azo pigment represented by formula 1 or 2 is formed. The azo pigment represented by the formula 1 can be synthesized as follows: corresponding diamine is converted into tetrazo salt as usual and this salt is coupled with a coupler in the presence of alkali in an aq. system and is further coupled with the coupler in the presence of base in a solvent. The azo pigment having different coupler moieties represented by the formula 2 is synthesized as follows: 1mol tetrazonium salt is successively coupled with 1mol of one of couplers and 1mol of the other and the resulting product is diazotized, coupled with one of the couplers, hydrolyzed, diazotized again and coupled with the other.
Bibliography:Application Number: JP19900406670