Patent · US Active

Methods to control transitions between color printing and black-only printing in an image forming device

US7826774B2 · kind B2 · utility

1Cited by

1References

20Claims

0Family size

Assignee

Lexmark International, Inc. · US

Inventors

William Paul Cook · Lexington, US
Ryan David Brockman · Lexington, US
Larry Steven Foster · Lexington, US
Kermit Arnold Meece · Lexington, US
Travis Alan Riggs · Shelbyville, US
Jeffrey Lawrence Tonges · Versailles, US
Michael Hayes Wilson · Lexington, US

Key dates

Filing date	Mar 17, 2008
Grant date	Nov 2, 2010
Priority date	—
Expiry date	Apr 25, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG03G2221/1861
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The present application is directed to methods for transitioning between color printing and black-only printing in an image forming device. A cartridge is moved between a first position in which color printing may occur and a second position in which black-only printing may occur. In the first position, a color developer unit may be in contact with a color photoconductor unit. The color developer unit may be spaced from the color photoconductor unit in the second position. During the transition, a voltage supplied to the cartridge and a speed of a drive motor driving the cartridge may be adjusted.

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