Printhead for ink jet printing apparatus

Details Printhead for ink jet printing apparatus Printhead for ink jet printing apparatus

1989-08-01

1990-05-08

Reynolds, Bruce A.

Recorders

Record receiver deforming

346140R, 118313, 251 611, 251331, G01D 1518, F16K 100, B05B 706

Patent

active

049242415

ABSTRACT:
A printhead for ink jet printing comprising a front plate having a chamber therein for ink under pressure, ports extending from the chamber to the back face of the front plate, recesses in the back face, passages extending through the front plate from the recesses to its front face, the ends of the passages at the front face constituting orifices for delivery of ink onto a target surface moving past the front face, a flexible membrane held on the back face by a back plate, and members slidable in holes in the back plate releasably holding the membrane pressed against the back face of the front plate at the back ends of the ports to block flow of ink out of the back ends of the ports to the recesses and the passages and operable to release the membrane for flexing away from the back ends of the ports for delivery of ink.

REFERENCES:
patent: 4555719 (1985-11-01), Arway et al.
patent: 4723131 (1988-02-01), Droit

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