Printer with ink printhead nozzle arrangement having thermal bend actuator
First Claim
1. A printer comprising a housing, a print media feed path through the housing and at least one ink jet printhead for printing onto print media disposed on said feed path, the printhead including an array of nozzle arrangements, at least one nozzle arrangement comprising:
- a wafer substratean ink chamber formed therein;
an ink ejection port formed by a substantially centrally located rim on a wall of said chamber; and
at least one flexible portion located on said wall and outside said ink ejection port;
whereby the wall is adapted to move independently of said rim such that upon actuation the at least one flexible portion moves the wall into said ink chamber forcing ink therein, out through the said ink ejection port; and
wherein the said at least one flexible portion of said wall is made from material having a thermal expansion suitable to cause the wall to bend into said ink chamber upon heating of the at least one flexible pardon of the wall.
3 Assignments
0 Petitions
Accused Products
Abstract
A printer has a printhead comprising an array of nozzles. A nozzle arrangement has an ink chamber formed in a wafer substrate and one wall of the chamber having at least one flexible portion. The ink ejection port is formed centrally on the wall with a rim surrounding it. The wall is adapted to move independently of the rim such that upon heating of the flexible portion of the wall, the wall bends into the ink chamber forcing ink therein out through the ejection port.
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Citations
5 Claims
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1. A printer comprising a housing, a print media feed path through the housing and at least one ink jet printhead for printing onto print media disposed on said feed path, the printhead including an array of nozzle arrangements, at least one nozzle arrangement comprising:
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a wafer substrate an ink chamber formed therein; an ink ejection port formed by a substantially centrally located rim on a wall of said chamber; and at least one flexible portion located on said wall and outside said ink ejection port; whereby the wall is adapted to move independently of said rim such that upon actuation the at least one flexible portion moves the wall into said ink chamber forcing ink therein, out through the said ink ejection port; and wherein the said at least one flexible portion of said wall is made from material having a thermal expansion suitable to cause the wall to bend into said ink chamber upon heating of the at least one flexible pardon of the wall. - View Dependent Claims (2, 3, 4, 5)
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Specification