Method for producing cadmium sulfide powder for electrophotography

Abstract

Abstract PURPOSE:To prepare CdS powder having improved durability and good quality of image, by blending CdS containing a specific amount of Cu with a flux, calcining the prepared blend at a temperature higher than the melting point of the flux, dispersing it into water. CONSTITUTION:CdS containing 4X10<-4>-10X10<-4>mol Cu based on 1mol CdS is blended with >=20wt% flux such as CdCl2, etc. and calcined at a temperature >=50 deg.C higher than the melting point of the flux. The prepared calcined blend is dispersed into water, mixed with Cu, and a Cd salt in the case of necessity, reacted with a sulfide such as Na2S, etc. or H2S, so that one layer of CdS layer having a different Cu content is precipitated on the surface of CdS. The prepared CdS is washed, preferably calcined again, to give CdS powder for electrophotography having improved durability and good quality of image.

Inventors

• 👤 Kiyoshi Suzuki
• 👤 鈴木　洌

Bibliographic Details