Lexmark International, Inc.

International Business Machines Corporation

Gordon Robert Dunning

Paul Douglas Horrall

Michael Craig Leemhuis

Edward Alan Rush

Christopher Gregory Chee

Daniel Paul Cahill

Steven A Silverstein

Steven Wayne Parish

Edward William Yohon, Jr

Daniel Joseph Westhoff

Billy Carl Chappel

Lowell Thomas Siders

A fuser latch system suitable for a customer replaceable fuser unit. Front holders include datum receivers on a base machine frame and datums on the fuser frame. Rear latches include retainers connected to the base machine frame, and axially translatable and rotatable shafts connected to the fuser frame. An end of the shaft is received in a retainer upon axial translation of the shaft, and locked in place upon rotation of the shaft. The rear latches bias the fuser frame for proper gear mesh and paper path alignment.

Fuser latch system

An imaging apparatus includes a machine frame, a printhead housing containing a printhead for generating a laser beam, and a position sensing device. The position sensing device includes a position sensing device frame and a position sensor for sensing a position of the laser beam. The position sensing device frame is interposed between the machine frame and the printhead housing. Each of the machine frame, the printhead housing and the position sensing device frame include at least one reference feature that in combination accurately reference the position of the printhead housing to the machine frame.

Referencing mechanism for an imaging apparatus

Sensor (41) is held between its arms (63) and nubs 60 in cover (31). A circuit board (57) on which the sensor is mounted remains outside of the cover, and panels (55) of the sensor (41) extend upward to prevent the circuit board (57) from collapsing leads (45, 53) which connect the sensor to the circuit board. Reliable operation is obtained without narrow tolerances.

Encoder system with cover mounted encoder

Duplex attachment for a printer

An improved sheet paper feed apparatus for a printing apparatus having a platen for holding and providing at least longitudinal motion to a sheet of paper. The sheet feed apparatus comprises a rectangular tray including a rear paper support portion and a spaced apart forward paper support portion, the portions for supporting thereon the opposite ends of a stack of paper. A shingler wheel is positioned intermediate the support portions for engaging the lowermost sheet of the paper sheet stack, and the shingler wheel is rotated in a first direction to move the lowermost sheet of the stack away from the forward support portion until the lowermost sheet is no longer supported thereby, and then in the opposite direction to drive the lowermost sheet beneath the forward paper support portion, the forward paper support portion comprising in the preferred embodiment a pair of inwardly projecting, spaced apart fingers. The improvement includes a cover member mounted for rotation on the tray and dimensioned to fit within the tray superimposed of the stack of papers. A paper stack lift is mounted adjacent the fingers and moves between a first recessed position below the plane of the fingers and a second position above the plane of the fingers. The cover means is coupled to the stack lift so that upon rotation of the cover member away from the stack, the stack lift assumes the second position and when the cover is in place superimposed of the stack, the lift is in the first position.

Sheet feeder for typewriters

Growing community of inventors

Versailles, KY, United States of America

Gordon Robert Dunning