Method of making laminated electrostatic printhead

Details Method of making laminated electrostatic printhead Method of making laminated electrostatic printhead

1991-04-04

1992-09-22

Arbes, Carl J.

Metal working

Method of mechanical manufacture

Electrical device making

295921, 346155, H05K 334

Patent

active

051485958

ABSTRACT:
In a printhead for an electrostatic printer, the printhead styli are formed on a monolithic substrate, such as a printed circuit board material. Each stylus has its own driver circuit incorporated into one or more integrated circuit die which are mounted directly on the monolithic substrate, and electrically connected to traces formed on the printed circuit board. The styli are the ends of the traces as formed on the edge of the substrate. The integrated circuit die are connected to the traces by wire bonding or TAB bonding. The printhead is implemented in monoscan, biscan, triscan, and various other configurations. To fabricate the printhead, the printed circuit board material is ground to a precise thickness and conductive traces are photolithographically etched in copper foil laminated thereto. Using adhesives, the printhead is laminated together including supporting side plates, and in some embodiments multiple substrates, which are laminated together directed or by spacers therebetween.

REFERENCES:
patent: 3235942 (1966-02-01), Howell et al.
patent: 3267485 (1966-08-01), Howell et al.
patent: 3578946 (1971-05-01), Colello
patent: 3693185 (1972-09-01), Lloyd
patent: 3718936 (1973-02-01), Rice, Jr.
patent: 3903594 (1975-09-01), Koneval
patent: 4415403 (1983-11-01), Bakewell
patent: 4920363 (1990-04-01), Hack

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