Mitsubishi Denki Kabushiki Kaisha

Shigeo Tsuda

Toshio Kobayashi

Sei Tsunoda

Takafumi Nishioka

Kikuo Hayama

Hiromi Yamada

A positive charge type organic photoconductor in which the surface of the photoconductor having a film thickness of from 10 to 30 .mu.m and containing at least from 15 to 40% by weight of a phthalocyanine type photoconductive compound in a resin binder, is treated with a reactive monomer or oligomer capable of extinguishing ionic active and radical active parts.

Positive charge type organic photoconductive layer

In an LED array (100), opaque layer (38) is provided on a semiconductor body (30) having PN junctions (41). A through holes (40) having a relatively small diameter are formed in the opaque layer on the PN junctions. Light which is generated at the PN junctions is emitted only through the holes in the form of photobeams. The LED array can be used in an electronic printer for photography without a self-focus lens array.

Growing community of inventors

Fukuyama, Japan

Shigeo Tsuda