Ink jet channel wafer for a thermal ink jet printhead
First Claim
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1. An ink jet channel wafer for an ink jet printer comprising a surface comprising:
- a) a plurality of anisotropically etched ink channels, andb) an anisotropically etched ink reservoir;
said ink reservoir being directly connected to said ink channels by convex corners, said convex corners being defined by at least one crystal {221} plane and wherein walls of said ink channels are on a crystal {111} plane.
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Abstract
An ink jet channel wafer for an ink jet printer has a first surface in which a plurality of anisotropically etched ink channels and an anisotropically etched ink reservoir are directly connected to one another. The ink jet channel wafer is etched using an admixture of at least one alkali metal hydroxide and at least one alcohol compound.
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Citations
12 Claims
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1. An ink jet channel wafer for an ink jet printer comprising a surface comprising:
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a) a plurality of anisotropically etched ink channels, and b) an anisotropically etched ink reservoir; said ink reservoir being directly connected to said ink channels by convex corners, said convex corners being defined by at least one crystal {221} plane and wherein walls of said ink channels are on a crystal {111} plane. - View Dependent Claims (2, 3, 4, 9, 10)
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5. An ink jet printhead for an ink jet printer comprising:
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a) an upper ink jet channel wafer comprising on a surface a plurality of anisotropically etched ink channels directly connected to an anisotropically etched ink reservoir by convex corners, said convex corners being defined by at least one crystal {221} plane, and wherein walls of said ink channels are on a crystal { 111} plane, and b) a lower heater wafer comprising heater elements wherein said upper ink jet channel wafer is on said lower heater wafer. - View Dependent Claims (6, 7, 8, 11, 12)
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Specification