Magenta colorant for electrophotographic recording processes

US4777105A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Hans-Tobias Macholdt · Darmstadt, DE
• Alexander Sieber · Frankfurt am Main, DE
• Adolf Kroh · Bad Camberg, DE

Key dates

• Filing date: May 28, 1987
• Grant date: Oct 11, 1988
• Expiry date: May 28, 2007

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G9/092
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An improved magenta colorant for electrophotographic multicolor recording processes, comprising mix-crystals from 95 to 60 parts of a compound of the formula I below and 5 to 40 parts of a compound of the following formula II ##STR1## and use thereof for preparing toners or developers which are used for electrophotographic copying of subject copies and for printing electronically, optically and magnetically stored data.