Xerox Corporation

Dennis M Ankrom

George B Brown

Ali Rafic Dergham

Thomas C Hollar

Karl B Ayash

Dennis N Muck

Frank Y Yang

C Michael Ray

A method and apparatus for maintaining the air pressure within a xerographic module/chamber of an image forming device above ambient pressure outside of the xerographic module/chamber which uses a pressure sensor, e.g., an altimeter to monitor ambient atmospheric pressure, and a microprocessor to control and maintain air pressure to a determined set point.

Ambient atmospheric pressure compensation controller for pressurized copying device

A copier/printer apparatus capable of duplex copying includes a roller assembly that shifts a sheet laterally while maintaining longitudinal movement of the sheet. A shaft that supports drive rolls that form nips with mating idler rolls has pins that extend into helical slots within the drive rolls such that the assembly rolls in a normal movement (axially) in one mode, while being able to have axial and lateral movement in another mode.

Copy sheet de-registration device

In a reproduction apparatus outputting copy sheets via exit rollers to be stacked in an adjacent stacking tray, which exit rollers are also reversible to feed a selected copy sheet still in the nip back into the reproduction apparatus to be further processed, the previously outputted and stacking copy sheets are prevented from being recaptured by these reversed rotation exit rollers, by automatically interposing a one-way gate or trap and baffle between the stacking copy sheets and the exit rollers, to prevent accidental reacquisition of those sheets into the reversed rollers, but which gate or trap is automatically deflected out of the way of a sheet being outputted from the nip of the exit rollers by the outputted sheet itself, without requiring any other actuating mechanism. Preferably this is a deflectable portion of a unitary shield member, with a sheet edge catching lip on top thereof positioned and adapted to ride against the bottom of the selected sheet being reverse fed, to catch the edge of, and deflect into an integral concave sheet edge trap, any other sheet being dragged back with the selected sheet towards the nip of the rollers. Preferably an arcuate baffle portion also extends outside of the periphery of the bottom exit roller, which may also be so deflectable.

Exit roller shield for duplex printing

A removable belt module for use in a reproduction machine for replacing photoreceptor belts including a pair of support rolls for supporting the photoreceptor belt and a pivot element disposed intermediate the support rolls and connected thereto by connecting arms, the arms being disposed in relative horizontal position for exerting tension on the belt for operation of the belt and being disposed in a relatively perpendicular relationship for relaxing the tension and replacing the belt. The belt module further includes shafts for engaging slots in the machine to mount the belt module and further includes a drive sprocket connected to one of the shafts for driving the photoreceptor belt.

Growing community of inventors

Williamson, NY, United States of America

Dennis M Ankrom