Patent · US Expired

Device for applying release agent to the surface of a fixing roller of an electrographic printer or copier

US6070044A · kind A · utility

4Cited by

3References

6Claims

0Family size

Assignee

Oce Printing Systems GmbH · DE

Inventors

Joachim Hoffmann · Esslingen am Neckar, DE
Stephen Nicholas Huntley · Hersbruck, DE

Key dates

Filing date	Nov 16, 1998
Grant date	May 30, 2000
Priority date	—
Expiry date	Nov 16, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S118/01
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A printer or copier using transfer printing has a fixing drum for fixing toner on a medium, such as paper. Parting liquid, or release agent, is applied to the fixing drum using an application element, the application element being moved over the surface of the fixing drum as it is unwound from a supply roll and wound onto a take-up roll. The speed of the supply roll is sensed and the motor of the take-up roll is controlled so that the speed of the application element is constant regardless of changes in the diameter of the application element on the supply roll. The speed of the supply roll may be sensed with a magnet and Hall sensor arrangement.

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