Lexmark International, Inc.

Matthew David Miles

Douglas Anthony Able

Hrishikesh Pramod Gogate

Mark Stephen Underwood

Danny Keith Chapman

Alan T Pullins

Adam Randal Wiedemann

Michael Todd Phillips

Marshall White

David Herman Alverson

Benjamin Kyle Shepherd

David Ross Cutts

Brian Michael Jacobs

An electronics device including a haptic-based user interface, including a touch screen; an actuator coupled to the touch screen for selectively vibrating the touch screen responsive to the touch screen being depressed; and a visual display panel. The user interface further includes a plurality of suspension members disposed between the touch screen and the display panel and a plurality of seal members disposed between the suspension members such that the suspension members and the seal members define a volume between the touch panel and the visual display panel. The suspension and seal members may be formed from compressible material, such as foam materials. By separating the visual display panel from the touch panel with the suspension members in this way, vibrations from the actuator that are experienced by the visual display panel are reduced, thereby extending the useful life of the visual display panel.

Haptic based user interface for an electronic 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

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Lexington, KY, United States of America

Matthew David Miles