Lexmark International, Inc.

Jonathan Carey Frey

William Paul Cook

Harald Portig

Christopher Dane Jones

John Parker Richey

Cyrus Bradford Clarke

Thomas Austin Fields

Matthew Christopher Coriale

Liqun Larry Wang

Wen-hsiung Adam Tseng

The dynamic range of an electrophotographic device may be shifted by calibrating a laser power of a laser source to operate within a first range of power levels during a laser power adjustment operation. At least one laser control parameter is modified after calibrating the laser power so that the laser source is operable within a second range of power levels different from the first range of power levels and a beam emitted by the laser source is controlled within the second range of power levels when the beam is directed towards an image area of a photoconductive surface.

Systems and methods for adjusting the dynamic range of a scanning laser beam

Waste toner is detected in a container of an image forming apparatus. An auger is provided within the container. A switch is provided which is operable depending upon a torque associated with operation of the auger. A frequency of activation of the switch is detected. A &ldquo;not full&rdquo;, &ldquo;near full&rdquo; and &ldquo;full&rdquo; condition of the waste toner in the container is determined depending upon the frequency of activation of the switch.

Method of detecting waste toner in a container of an image forming apparatus

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Lexington, KY, United States of America

Jonathan Carey Frey