Inkjet printhead having ink feed channels defined by thin-film structure and orifice layer
AssigneeHewlett-Packard Development Company, L.P.
InventorsMatthew D. Giere, Colin C. Davis, James A. Feinn
Life of this patent
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Abstract
An inkjet printhead includes a substrate having an ink feed slot formed therein. The inkjet printhead includes drop generators and ink feed channels. Each drop generator has a nozzle and a vaporization chamber. At least one ink feed channel is fluidically coupled to each vaporization chamber and is fluidically coupled to the ink feed slot. A thin-film structure is supported by the substrate and defines a first portion of each ink feed channel. An orifice layer supported by the substrate defines the nozzles and the vaporization chambers in the drop generators. The orifice layer defines a second portion of each ink feed channel.
Claims21
An inkjet printhead comprising:
- a substrate having an ink feed slot formed in the substrate;
- drop generators, each drop generator having a nozzle and a vaporization chamber;
- ink feed channels, wherein at least one ink feed channel is fluidically coupled to each vaporization chamber and is fluidically coupled to the ink feed slot;
- a thin-film structure supported by the substrate and defining a first portion of each ink feed channel;
- and
- an orifice layer supported by the substrate, defining the nozzles and the vaporization chambers in the drop generators, and defining a second portion of each ink feed channel.
An inkjet printhead assembly comprising:
- at least one printhead, each printhead including:
- a substrate having an ink feed slot formed in the substrate;
- drop generators, each drop generator having a nozzle and a vaporization chamber;
- ink feed channels, wherein at least one ink feed channel is fluidically coupled to each vaporization chamber and is fluidically coupled to the ink feed slot;
- a thin-film structure supported by the substrate and defining a first portion of each ink feed channel;
- and
- an orifice layer supported by the substrate, defining the nozzles and the vaporization chambers in the drop generators, and defining a second portion of each ink feed channel.
An inkjet printing system comprising:
- at least one printhead, each printhead including:
- a substrate having an ink feed slot formed in the substrate;
- drop generators, each drop generator having a nozzle and a vaporization chamber;
- ink feed channels, wherein at least one ink feed channel is fluidically coupled to each vaporization chamber and is fluidically coupled to the ink feed slot;
- a thin-film structure supported by the substrate and defining a first portion of each ink feed channel;
- and
- an orifice layer supported by the substrate, defining the nozzles and the vaporization chambers in the drop generators, and defining a second portion of each ink feed channel.
A method of forming inkjet printhead on a substrate comprising:
- forming an ink feed slot in the substrate;
- forming a thin-film structure on the substrate including defining a first portion of each of a plurality of ink feed channels fluidically coupled to the ink feed slot;
- and
- forming an orifice layer on the substrate including defining nozzles and vaporization chambers, and defining a second portion of each of the plurality of ink feed channels fluidically coupled to the ink feed slot, wherein at least one ink feed channel is fluidically coupled to each vaporization chamber.
Dependencies are inferred from the claim text.