B - Operations – Transporting – 41 – J
Patent
B - Operations, Transporting
41
J
101/96.022
B41J 2/14 (2006.01) G01D 15/16 (2006.01)
Patent
CA 1287256
Abstract of the Disclosure A printhead for an ink jet printing apparatus comprising a body having a recess in its back face, and a plurality of bosses extending from the bottom of the recess with an orifice extending through each boss; a flexible membrane over the recess forming a chamber for ink supplied from a source under pressure, the membrane engageable with the back ends of the bosses for closing the orifices; a plurality of relatively slender elongate members one for each boss extending rearward from the back of the membrane, each of the elongate members being generally aligned at its inner end with its respective boss; means at the outer end of each elongate member operable by the elongate member for releasing the membrane from the respective boss to enable the membrane to flex away from the respective boss for delivery of a drop of ink from the chamber through the respective orifice, the release means being arranged in an array spread out rela- tive to the bosses with the elongate members extending from a relatively closely spaced array at their inner ends to the release means in their spread-out array. As shown in Fig. 1 the elongate members can be air tubes, and the release means can be electrically operated air valves which supply air through the tubes to hold and release the membrane. As shown in Fig. 9, the elongate members can be flexible wires and the release means can be solenoids which operate the wires to hold and release the membrane.
551442
Diagraph Corporation
Smart & Biggar
LandOfFree
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