Patent · US Expired

Stepping motor control, and operating mode of such motors

US6054835A · kind A · utility

9Cited by

3References

11Claims

0Family size

Assignee

Oce Printing Systems GmbH · DE

Inventors

Peter Thiemann · Munich, DE
Jens Umlauf · Merching, DE
Hermann Andresen · Nastätten, DE

Key dates

Filing date	Jul 1, 1999
Grant date	Apr 25, 2000
Priority date	—
Expiry date	Jul 1, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH02P8/34
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and apparatus for operating stepping motors in a printer or copier senses temporarily changes in the moment of resistance caused by the introduction of the leading edge of the paper and overcomes this change in moment by changing the current amplitude to the motor windings. The currents are modified at a starting time, as determined by sensors.

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