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US 11,958,291 B2Granted
Liquid discharging head and liquid discharging apparatus
AssigneeSeiko Epson Corporation
InventorsShohei Mizuta, Hiroaki Okui
Life of this patent
Estimating the term…
Abstract
an adhesive having a first amount exists on a side of the first piezoelectric element line, of a joint of the wiring substrate and the pressure chamber substrate or the vibration plate, an adhesive having a second amount that is larger than the first amount exists on a side of the second piezoelectric element line of the wiring substrate, of the joint, and a first discharging element related to the first piezoelectric element line is different from a second discharging element related to the second piezoelectric element line.
Claims12
A liquid discharging head comprising:
- a pressure chamber substrate on which a plurality of first pressure chambers and a plurality of second pressure chambers are formed;
- a first piezoelectric element line in which a plurality of piezoelectric elements is arranged, each of the plurality of piezoelectric elements being provided for each of the plurality of first pressure chambers;
- a second piezoelectric element line in which a plurality of piezoelectric elements is arranged, each of the plurality of piezoelectric elements being provided for each of the plurality of second pressure chambers;
- a wiring substrate that is disposed between the first piezoelectric element line and the second piezoelectric element line and supplies a voltage to the plurality of piezoelectric elements in the first piezoelectric element line and the plurality of piezoelectric elements in the second piezoelectric element line;
- and
- a vibration plate that is disposed, in a thickness direction of the pressure chamber substrate, between the pressure chamber substrate and the plurality of piezoelectric elements, wherein
- an adhesive having a first amount exists on a side of the first piezoelectric element line, of a joint of the wiring substrate and the pressure chamber substrate or the vibration plate,
- an adhesive having a second amount that is larger than the first amount exists on a side of the second piezoelectric element line of the wiring substrate, of the joint, and
- a first discharging element related to the first piezoelectric element line is different from a second discharging element related to the second piezoelectric element line.
6 more elements
A liquid discharging head comprising:
- a pressure chamber substrate on which a plurality of first pressure chambers and a plurality of second pressure chambers are formed;
- a first piezoelectric element line in which a plurality of piezoelectric elements is arranged, each of the plurality of piezoelectric elements being provided for each of the plurality of first pressure chambers;
- a second piezoelectric element line in which a plurality of piezoelectric elements is arranged, each of the plurality of piezoelectric elements being provided for each of the plurality of second pressure chambers;
- a wiring substrate that is disposed between the first piezoelectric element line and the second piezoelectric element line and supplies a voltage to the plurality of piezoelectric elements in the first piezoelectric element line and the plurality of piezoelectric elements in the second piezoelectric element line;
- and
- a vibration plate that is disposed, in a thickness direction of the pressure chamber substrate, between the pressure chamber substrate and the plurality of piezoelectric elements, wherein
- the wiring substrate includes
- a main body portion that extends in the thickness direction of the pressure chamber substrate, and
- a terminal that is bent toward a side of the second piezoelectric element line from an end portion of the main body portion on a side of the pressure chamber substrate,
- an adhesive having a first amount exists on a side of the first piezoelectric element line, of a joint of the wiring substrate and the pressure chamber substrate or the vibration plate, and
- an adhesive having a second amount exists on a side of the second piezoelectric element line of the wiring substrate, of the joint.
8 more elements
Dependencies are inferred from the claim text.