Lexmark International, Inc.

David Herman Alverson

Mark Stephen Underwood

Kevin Dean Schoedinger

Douglas Anthony Able

Danny Keith Chapman

Michael Todd Phillips

Marshall White

Benjamin Kyle Shepherd

David Ross Cutts

Matthew David Miles

Brian Michael Jacobs

This disclosure relates to a system, apparatus and method for incorporating radio frequency identification (RFID) technology into a printing device that may provide an assortment of functional performance capabilities. This may include the ability to scan media information such as text and/or images along with RFID identifier information and process, copy and/or forward such text media and/or identifier information to a remote location.

Radio frequency identification printing device

An improved variable speed fan controller for use in devices such as laser printers. The controller automatically adjusts its output signal to fans such that a fan quickly settles into an appropriate operating speed, even if the fan has been newly installed into the equipment. The controller can store values in non-volatile memory, if desired, to keep track of recent changes in the fan's operating parameters and corresponding control signal values. The controller is able to control relatively inexpensive fans that don't necessarily operate at a predictable fan rotating speed under repeatable conditions and control signals, by controlling the fan to an initial or predetermined rotating speed; if the fan isn't running within a suitable range of rotational speeds, then determining whether a fine or coarse adjustment should be made to the fan's rotational speed. The controller makes appropriate adjustments until the fan's rotational speed is within acceptable operating tolerances.

Method and apparatus for controlling a variable speed fan in an image forming device

Growing community of inventors

Richmond, KY, United States of America

David Herman Alverson