Structure and method for preventing ink shorting of conductors c

Details Structure and method for preventing ink shorting of conductors c Structure and method for preventing ink shorting of conductors c

1993-04-30

1995-08-15

Reinhart, Mark J.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 63, B41J 205

Patent

active

054423864

ABSTRACT:
In one embodiment of the invention, a flexible tape has formed on it conductors for being connected to a printhead substrate. The conductors on the tape are coated with an insulating layer, and exposed ends of the conductors extend from the layer. A headland is formed on a plastic print cartridge for receiving the printhead substrate having the exposed conductors extending from one or more edges of the printhead substrate. An adhesive bead is formed on the headland so that when the printhead is properly positioned on the headland, the adhesive contacts the conductors to encapsulate and insulate one exposed side of the conductors. A second adhesive or encapsulant bead is deposited over the opposite side of the conductors to encapsulate and insulate the remaining exposed regions of the conductors. In this manner, the combined insulating action of the insulating layer and the two insulating adhesive beads prevents the conductors from being shorted together by ink which may flow in the vicinity of the conductors.

REFERENCES:
patent: 4806106 (1989-02-01), Mebane et al.
patent: 5278584 (1994-01-01), Keefe et al.
patent: 5305015 (1994-04-01), Schantz et al.

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