Xerox Corporation

John F Obrien

Dan A Hays

Charles H Tabb

Jeffrey William Drawe

Mark Sennett Jackson

David Sekovski

Jing Qing Song

John D McCaffrey

Robert K Fox

In DC pin scorotron charging apparatus for charging a photoreceptor to a final voltage, a first DC pin scorotron charging device initially charges the photoreceptor to an intermediate overshoot voltage and a second DC pin scorotron charging device thereafter uniformly charges the photoreceptor to the final voltage. The first DC pin scorotron charging device provides a generally high percent open control grid area, a generally high emitter slope, and a generally high emitter pin current. The second DC pin scorotron charging device provides a generally low percent open control grid area, a generally low emitter slope, and a generally low emitter pin current.

DC pin scorotron charging apparatus, and printing machine arranged with the same

A Recharge-Expose-and-Develop Image on Image color electrophotographic printing system in which the photoreceptor is recharged between development of one color of toner image and the subsequent exposure for a second color latent image by first being sprayed with opposite sign ions to reduce the photoreceptor potential and then being charged with correct sign ions to recharge the photoreceptor to a desired potential.

Reverse polarity split recharge in recharge-expose-and-develop image on

Growing community of inventors

Fairport, NY, United States of America

John F Obrien