Browse Prior Art Database

CARBON FIBER INTEGRATED CORONA PIN ARRAY AND HV INTERCONNECT

IP.com Disclosure Number: IPCOM000027196D
Original Publication Date: 1995-Aug-31
Included in the Prior Art Database: 2004-Apr-07
Document File: 4 page(s) / 143K

Publishing Venue

Xerox Disclosure Journal

Abstract

An integrated corotron pin array electrode and high voltage connector formed from a plurality of carbon fibers is disclosed. A typical pin array type corona generating device comprises a corona generating electrode, or so called coronode, including a thin, elongate member fabricated from a highly conductive material having triangular teeth or scalloped edges along one edge thereof and extending along the entire length thereof. The pin coronode is coupled to a high voltage extension member or may be provided with an integral high voltage extension member for electrical connection of the pin coronode to a high voltage power source. In a typical embodiment, the pin array has a length approximately equal to the width of a surface to be charged. It has been found that the pin array coronode arrangement provides significant structural and operational advantages over other types of coronode devices. US-A-3,691,373 to Compton, et al. demonstrates a corona device generally comprising an electrically conductive strip or pin array adapted for connection to an exterior connector from a high voltage source, providing a corona generating device for generating electrostatic fields useful in driving various machine operations in electrostatographic applications.

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Page 1 of 4

XEROX DISCLOSURE JOURNAL

CARBON FIBER INTEGRATED CORONA PIN ARRAY AND HV INTERCONNECT
Timothy A. Cole
John M. Randall

Proposed Classification
U.S. c1.439 Int. C1. HOlr 9/09

FIG. I

FIG. 2

XEROX DISCLOSURE JOURNAL - VOI. 20, NO. 4 July/August 1995 375

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FIG. 3

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Page 2 of 4

CARBON FIBER INTEGRATED CORONA PIN ARRAY AND HV INTERCONNECT (Cont'd)

An integrated corotron pin array electrode and high voltage connector formed from a plurality of carbon fibers is disclosed.

A typical pin array type corona generating device comprises a corona generating electrode, or so called coronode, including a thin, elongate member fabricated from a highly conductive material having triangular teeth or scalloped edges along one edge thereof and extending along the entire length thereof. The pin coronode is coupled to a high voltage extension member or may be provided with an integral high voltage extension member for electrical connection of the pin coronode to a high voltage power source. In a typical embodiment, the pin array has a length approximately equal to the width of a surface to be charged. It has been found that the pin array coronode arrangement provides significant structural and operational advantages over other types of coronode devices. US-A-3,691,373 to Compton, et al. demonstrates a corona device generally comprising an electrically conductive strip or pin array adapted for connection to an exterior connector from a high voltage source, providing a corona generating device for generating electrostatic fields useful in driving various machine operations in electrostatographic applications.

The present disclosure provides an integrated corotron pin array and high voltage connector formed of carbon fibers wherein a bundle of densely packed conductive fibers is provided to simultaneously form a pin array coronode and a "fuzzy" electrical contact. The fiber density of the presently disclosed pin array coronode is varied along the length of the coronode to form a .pin array and is also varied at one end to form a "fuzzy" electrical contact at one end. The resistance of the fibers can be tailored to limit the current flow through individual segments while reducing electromag...