Canon Kabushiki Kaisha

Kasei Optonix, Ltd.

Hirokuni Kawashima

Kiyoshi Suzuki

Ichiro Nomura

Yuji Nishigaki

Yoshiyuki Mimura

Kunihiko Yoneshima

Koji Goto

Isamu Kajita

A process for preparing photoconductive cadmium sulfide comprising steps of forming precipitated cadmium sulfide particles, primarily firing said cadmium sulfide particles, deionizing said cadmium sulfide particles, and secondarily firing said cadmium sulfide particles.

Process for preparing photoconductive cadmium sulfide

Cadmium sulfide particles are heated in a solution of a compound capable of generating sulfur when heated. The cadmium sulfide thus treated is suitable for a photoconductive material for electrophotography.

Process for preparing cadmium sulfide for electrophotography and product

An electrophotosensitive member having a photoconductive layer prepared by dispersing in a binding resin, photoconductive powder particles coated with a thermoplastic resin. By the use of the such photoconductive powder particles coated with the resin, there can be provided an electrophotosensitive member particularly excellent in the moisture resistant property.

Electrophotosensitive element has resin encapsulated CdS particles in

Cadium sulfide for electrophotography is produced by reacting hydrogen sulfide with a solution containing cadmium sulfate, sulfuric acid and hydrochloric acid of a low concentration, and then firing the resulting cadmium sulfide without adding a donor impurity other than that derived from the hydrochloric acid.

Cadmium sulfide for electrophotography

An electrophotographic photoreceptor has a photoconductive layer on a substrate. The photoconductive layer comprises a photoconductor and a water-soluble compound which reacts with free anion released from the photoconductor to produce an unsoluble salt and contains anion having smaller equivalent ionic conductance than that of the free anion.

Electrophotographic photoreceptor

A process for preparing raw particles of cadmium sulfide for electrophotography comprises reacting a solution containing cadmium ion and hydrochloric acid with hydorgen sulfide to make cadmium sulfide particles deposited from the solution.

Process for preparing raw particles of cadmium sulfide for

CdS for electrophotography is produced by contacting sulfide ion, cadmium ion and a donor impurity of Group IIIa or IIIb of the Periodic Table and firing the resulting CdS. An acceptor impurity may be added to the first step or the second step.

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Tokyo, Japan

Hirokuni Kawashima