Patent · US Expired

Particles suitable as carriers for electrophotography

US5496674A · kind A · utility

6Cited by

11References

10Claims

0Family size

Assignee

BASF SE

Inventors

Joerg Adel · Ludwigshafen, DE
Norbert Mronga · Dossenheim, DE
Erwin Czech · Biblis, DE

Key dates

Filing date	Jun 13, 1994
Grant date	Mar 5, 1996
Priority date	—
Expiry date	Jun 13, 2014

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2993
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Particles (I) which are suitable as carriers for electrophotography consist of PA1 a) a magnetic core and PA1 b) a shell of alumina, chromium oxide, molybdenum oxide, tungsten oxide, silica, tin oxide or zirconium oxide or a mixture thereof and particles (II) consist of PA1 a) a magnetic core and PA1 b) a shell of titanium oxide and are obtainable by decomposing a titanium tetraalcoholate in the gas phase by reaction with steam and/or oxygen in the presence of agitated cores, and these particles are used in electrophotographic two-component developers.

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