Ricoh Systems, Inc.

Ricoh Corporation

Herbert K Wurster

Tomio Kubota

Novel squaric acid methine dyes are provided. These dyes are useful in forming photoconductive layers for components utilized in electrographic imaging processes.

Photoconductive devices containing squarilium dye compositions

Electrographic imaging process and electrographic plates utilized therein are provided wherein the photoconductive layer comprises a squaric acid methine dye admixed with a binder or a photoconductive material. The photoconductive layer may also comprise the squaric acid methine dye, a binder and a charge transport material.

Sensitive electrophotographic plates containing squaric acid methine

An electrophotographic imaging process having a double charging sequence and a photoreceptor utilized therein are provided, wherein the photoreceptor comprises a substrate, a photosensitive layer comprising a squaric acid methine dye, and an insulating layer. The photosensitive layer may also comprise a squaric acid methine dye and a charge transport material.

Growing community of inventors

Los Gatos, CA, United States of America

Herbert K Wurster