Xerox Corporation

Perry Y Li

Yao Rong Wang

Sudhendu Rai

Lingappa K Mestha

Martin Krucinski

Sohail A Dianat

David R Kamprath

Masayoshi Tomizuka

Michael J Rice

Roberto Horowitz

Carlo Cloet

A method of synchronizing the arrival of copy sheets at a photoreceptor in an image processing having a copy sheet path having a plurality of segments coupled at given transfer zones, a plurality of copy sheet drives, an image transfer station, a photoreceptor and a controller. The controller directs the image processing apparatus by tracking the movement of copy sheets at the image transfer station in relation to the movement of the photoreceptor, monitoring the movement of copy sheets at the transfer zones, determining the need to adjust the spacing of copy sheets along the plurality of segments of the copy sheet path, and suitably activating selected copy sheet drives.

Interpaper spacing control in a media handling system

An image quality control apparatus controls quality of xerographic images formed by a xerographic imaging system onto a recording medium when at least one sensor which is operative to provide signals to the xerographic imaging system for quality control malfunctions. The image quality control apparatus includes a controller device in communication with the xerographic imaging system. The controller includes a data collection device, a determining device and an input generating device. The data collection device collects and processes sensor data received from the at least one sensor while the at least one sensor is operative. The determining device determines whether the at least one sensor malfunctions. The input generating device generates a controller input signal by using the sensor data collected by the data collection device and provides the controller input signal to the xerographic imaging system to control quality of the xerographic images when the determining device determines that the at least one sensor has malfunctioned. A method for controlling quality of a xerographic print after malfunction of a quality control sensor is also described.

Sensorless quality control apparatus used upon malfunction of a quality

Growing community of inventors

Minneapolis, MN, United States of America

Perry Y Li