Electrophotographic element with blocked isocyanate binder
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYoshimasa Ito, Sohji Tsuchiya, Mutsuaki Murakami, Atsushi Omote
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Abstract
A photosensitive material for electrophotography, comprises a support and, provided thereon, an organic photoconductive layer of single-layer structure comprising a mixture of a metal-free phthalocyanine and a binder organic compound; said binder organic compound being comprised of an isocyanate in which the isocyanate terminal has been blocked with a blocking agent. The present photosensitive material can achieve good sensitivity and charge characteristics and is suited for the positive charge system.
Claims4
A photosensitive material for electrophotography, comprising a support and, provided on the support, an organic photoconductive layer of single-layer structure comprising a mixture of a metal-free phthalocyanine and a binder organic compound;
- said binder organic compound consisting essentially of an isocyanate in which the isocyanate terminal has been blocked with a blocking agent selected from the group consisting of an oxime compound, a lactam compound and an ester compound.
A photosensitive material for electrophotography, comprising a support and, provided on the support, an organic photoconductive layer of single-layer structure comprising a mixture of a metal-free phthalocyanine and a binder organic compound;
- said binder organic compound consisting essentially of an isocyanate in which the isocyanate terminal has been blocked with a blocking agent selected from the group consisting of an oxime compound, a lactam compound and an ester compound, and a fluorine-containing polyol, the weight ratio of the isocyanate and the polyol being from 1:1 to 9:1.
Dependencies are inferred from the claim text.