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HYBRID JUMPING DEVELOPMENT SYSTEM USING A SEAMED PHOTORECEPTOR

IP.com Disclosure Number: IPCOM000027367D
Original Publication Date: 1996-Jun-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 50K

Publishing Venue

Xerox Disclosure Journal

Abstract

Electrophotographic printing machines employing a seamed belt photoreceptor also have a seam tracking system to prevent imaging at the seam. It is proposed to use the seam tracking system to protect the donor roll surfiace andor high voltage pulsed bias supply of a Hybrid Jumping Development (HJD) system. The seam tracking system would interrupt the pulsed bias power supply, at the HJD, whenever the photoreceptor seam passes through the development nip. This provides protection against spurious electrical arcing caused by a diminished size of the development gap (donor roll to photoreceptor spacing) when an overlapped photoreceptor seam passes through the nip.

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XEROX DISCLOSURE JOURNAL

HYBRID JUMPING DEVELOPMENT Proposed Classification

SYSTEM USING A SEAMED PHOTORECEPTOR ht. C1. G03G 15/14 Delmer G. Parker
Gerald T. Lioy
Michael G. Swales

U. S. C1.355/271

Electrophotographic printing machines employing a seamed belt photoreceptor also have a seam tracking system to prevent imaging at the seam. It is proposed to use the seam
tracking system to protect the donor roll surfiace andor high voltage pulsed bias supply of a Hybrid Jumping Development (HJD) system. The seam tracking system would interrupt the pulsed bias power supply, at the HJD, whenever the photoreceptor seam passes through the development nip. This provides protection against spurious electrical arcing caused by a diminished size of the development gap (donor roll to photoreceptor spacing) when an overlapped photoreceptor seam passes through the nip.

While the proposal offers an arc suppression countermeasure for pulsed jumping development, it would provide the same protection to DC jumping development and scavengeless electrode development using taunt or embedded wires.

XEROX DISCLOSURE JOURNAL - Vol. 21, No. 3 May/June 1996 225

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226 XEROX DISCLOSURE JOURNAL - Vol. 2 1, No. 3 May/June 1996

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