Patent · US Expired

Pigment for electrophotographic recording processes

US4786575A · kind A · utility

1Cited by

1References

2Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Hans-Tobias Macholdt · Darmstadt, DE
Alexander Sieber · Frankfurt am Main, DE
Helmut Troster · Königstein, DE

Key dates

Filing date	Jan 22, 1987
Grant date	Nov 22, 1988
Priority date	—
Expiry date	Jan 22, 2007

Classification

Technology area (CPC G)Physics
CPC primaryG03G9/0906
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Colorant for electrophotographic recording processes which is composed of mix-crystals of 99-70 parts of a compound of the following formula I and 1-30 parts of a compound of the following formula II ##STR1## where R in formula II denotes a C.sub.1 -C.sub.4 -alkyl group, and the use thereof for preparing toners or developers which are used for the electrophotographic copying or duplicating of originals and for printing electronically, optically or magnetically stored information.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.