Xerox Corporation

James L Pratt

Joseph M Ferrara, Jr

Kevin Michael Carolan

Kenneth W Pietrowski

Jacob R McCarthy

William R Harris

Timothy D Slattery

Jing Qing Song

Douglas E Webb

Frederick B Clark

Patrick Shuman

Michael J Hill

Douglas W Buch

A method of operating a printer enables activation signals of variable lengths to be generated for operation of a sintering head. The activation signals are generated with reference to a distance between activation signals for a first component to be a first determined distance and a duration of the activation signals for the first component to be longer than the first predetermined distance. This distance and duration are set to values that enable the generation of activation signals before the first predetermined distance is reached to maintain an activation signal until the generation of the activation signals is terminated. By generating a different number of activation signals, the duration of an initial activation signal can be varied.

Method for generating variable length strobe pulses with reference to image distance

A sheet registration system includes a transport member on which a sheet is conveyed in a process direction, a vacuum shuttle, and a feedback system. The vacuum shuttle includes a vacuum head which applies suction to the sheet and actuators for rotating the vacuum head in a plane parallel to a plane of the transport member and translating the vacuum head in a cross-process direction. In response to feedback instructions generated by the feedback system, the actuators move the vacuum head, relative to the transport member, while the vacuum is applied to the sheet. The sheet registration system is suitable for use in a printer for reducing skew and lateral offset of sheets of print media.

Vacuum shuttle with stitch and roll capabilities

In an electrostatographic imaging apparatus employing at least one charging device, in an electrostatic charge process involving the creation of latent electrostatic images, A method for controlling corona current generation by said at least one charging device is disclosed. The method comprising the steps of: generating an AC current and an AC voltage with a power supply; measuring the steady state negative half cycle of current, filtering capacitive current spikes from said negative half cycle current measurement and generating a corona current feedback signal in response to said filtering step; and dynamically adjusting the AC voltage in response to the corona current feedback signal so that the steady state negative half cycle of current measured in said measuring step remains constant.

AC corona current regulation

A copier or printer connecting with a standard commercial electrical power line source and having a limited peak power consumption can still provide an electrically powered sheet stapling system by driving the stapler from an electrical storage battery power supply, the batteries of which are electrically connecting with an integral low voltage electrical power supply of the reproduction apparatus only for low power slow recharging. The stapler is operable for stapling sheets, powered solely by the storage batteries, even when the copier or printer, including its integral low voltage electrical power supply, is completely turned off, i.e., fully disconnected from the power line source. This stapler can also be operated when the reproduction machine is fully operating at its peak power consumption, including the operation of other, internal, stapling, because this stapler's operation does not increase that peak power consumption. Preferably this stapler and its battery power supply is part of an easily unplugable modular unit removably mountable on top of the machine for convenience stapling. Additionally, the stapler may be automatically prevented from further attempted stapling and thus further battery discharge when there is insufficient remaining battery power for fully effective stapling.

Reproduction apparatus with lower peak power requirement with integral

A power supply for a magnetron generating a DC output having a low voltage ripple content at the power supply output for energizing the magnetron. The power supply includes a voltage and current controlled regulator circuit transmitting an output signal having a voltage level and current level established according to the voltage across the magnetron and the current flowing through the magnetron. The ripple content of the power supply output is less than approximately 5-7% and causes the magnetron to operate in a relatively narrow bandwidth of approximately .+-.5 Megahertz. In one embodiment, an output of an induced sawtooth waveform is generated by turning on and turning off an AC supply to the power supply circuit to induce a ripple voltage for causing the magnetron to enter the correct operating frequency. In another embodiment, a regulator circuit generates a square wave signal having a period of oscillation based on the current flowing through the magnetron. The square wave signal is then converted to a DC voltage and applied to the magnetron to cause the magnetron to enter the correct operating frequency.

Growing community of inventors

Penfield, NY, United States of America

James L Pratt