Patent · US Expired

Method for regenerating the carrier particles of a two-component developer consisting of carrier particles and toner

US4511639A · kind A · utility

5Cited by

4References

2Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Joseph Knott · Tutzing, DE
Walter Kopp · Taufkirchen, DE

Key dates

Filing date	Apr 5, 1982
Grant date	Apr 16, 1985
Priority date	—
Expiry date	Apr 5, 2002

Classification

Technology area (CPC G)Physics
CPC primaryG03G15/0887
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Developer mix is regenerated in a manner which removes toner crust from carrier particles in order to extend the useful time of a developer mix within a developer station of an electrophotographic printing or copying machine. A portion of developer mix is continuously or periodically removed from the main body of developer mix in the developer station and supplied to a regenerator device where the developer particles are exposed to impacts flaking off the toner crust formations. The regenerated developer mix is then recycled back to the main body of mix at the developer station. This regeneration and recycling of developer mix serves to hold substantially constant the efficacy of the developer mixture.

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