Browse Prior Art Database

INTEGRATED ELECTROGRAPHIC STYLUS ELECTRODE HEAD

IP.com Disclosure Number: IPCOM000024326D
Original Publication Date: 1980-Apr-30
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 90K

Publishing Venue

Xerox Disclosure Journal

Abstract

Printed circuit board technologies are now being employed to fabricate groups of electrical conductor lines on a dielectric board which terminate along one edge of the board to form stylus electrodes. The stylus electrodes form an array that electrically cooperate with complementary electrodes to deposit charge on a recording medium in an electrographic printer.

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I,

EROX DISCLOSURE JOURNAL

INTEGRATED ELECTROGRAPHIC Proposed Classification STYLUS ELECTRODE HEAD
U.S. David D. Thornburg C1. 346/155
Int. C1. Gold 15/06

r2 f"

/4

me. 2

FIG. I

Printed circuit board technologies are now being employed to fabricate groups of electrical conductor lines on a dielectric board which terminate along one edge of the board to form stylus electrodes. The stylus electrodes form an array that electrically cooperate with complementary electrodes to deposit charge on a recording medium in an electrographic printer.

Stylus electrodes on PC boards generally have a rectangular cross section. Pattern plating in PC board technology has limitations on the height that the conductor lines may be fabricated on the surface of the dielectric board. Attempts are presently being made to fabricate these electrodes to have a square cross section as it is desirable that the configuration of the charge deposited by the electrodes have a unity ratio.

One manner of obtaining a square cross-sectional configuration is to bevel the recording ends of the electrodes at a proper angle as illustrated in stylus electrode head 10 in Figures 1 and 2. Rectangular cross-sectional conductor lines forming stylus electrodes 12 are plated or etched on a dielectric board 14. As shown in Figure 1, two such boards 14 separated by a dielectric sheet 16 are brought together to achieve a staggered matrix array to provide 100% coverage across the recording medium.

Volume 5 Number 2 M...