Electrophotographic recording medium

US4517270A · kind A · utility

Assignee

• BASF SE

Inventors

• Fritz Graser · Ludwigshafen, DE
• Gerhard Hoffmann · Otterstadt, DE
• Reinhold J. Leyrer · Schifferstadt, DE
• Peter Neumann · Wiesloch, DE
• Manfred Patsch · Monsheim, DE

Key dates

• Filing date: Mar 16, 1982
• Grant date: May 14, 1985
• Expiry date: Mar 16, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B56/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An electrophotographic recording medium which consists essentially of an electrically conductive base and a photosemiconductive double layer which comprises a first layer containing charge carrier-producing dyes, and a second layer containing one or more compounds which are charge carrier-transporting when exposed to light, wherein the charge carrier-producing dyes are dark in color, possess substantially panchromatic absorption characteristics, and are of the general formula ##STR1## where R.sup.1 is propyl, 1-hydroxypropyl, 1-methoxypropyl or 1-phenylethyl, Z is p-phenylazoanilino, phenylthio or anilino, and n is 0-6, and a process for the production of this electrophotographic recording medium.