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US 10,500,856 B2Granted
Ink jet head and ink jet recording apparatus
AssigneeToshiba Tec Kabushiki Kaisha
InventorsMeng Fei Wong, Ryutaro Kusunoki, Shuhei Yokoyama, Ryuichi Arai
Life of this patent
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Abstract
According to one embodiment in an inkjet head, the common electrodes for all the actuators, without overlapping with the first wiring pattern formed by individual electrodes, are connected to a second wiring pattern that passes between the outer peripheral portion of piezoelectric bodies, and a third wiring pattern that extends in a direction different from a direction of the second wiring pattern. The first wiring pattern and the third wiring pattern are electrically insulated at intersections thereof.
Claims20
An ink jet head comprising:
- a vibrating plate having a plurality of nozzles;
- a plurality of actuators arranged on the vibrating plate, each of the plurality of actuators having a piezoelectric body;
- a plurality of individual electrodes having a first wiring pattern disposed on the vibrating plate, each of the plurality of individual electrodes being electrically connected to the piezoelectric body of each of the plurality of actuators;
- a common electrode having a plurality of second wiring patterns disposed on the vibrating plate so that the second wiring patterns do not overlap with the first wiring pattern, each of the plurality of second wiring patterns being electrically connected to the piezoelectric body of each of the plurality of actuators across spaces between the plurality of piezoelectric bodies;
- and
- a third wiring pattern disposed on the vibrating plate, extends in a direction different from a direction of the second wiring pattern, and is electrically connected to the second wiring pattern, wherein
- the second wiring pattern is connected to two current paths of any one of the plurality of actuators.
4 more elements
An image forming apparatus comprising:
- an ink jet head;
- a roller configured to convey a sheet;
- the ink jet head comprising:
- a vibrating plate having a plurality of nozzles;
- a plurality of actuators arranged on the vibrating plate, each of the plurality of actuators having a piezoelectric body;
- a plurality of individual electrodes having a first wiring pattern disposed on the vibrating plate, each of the plurality of individual electrodes being electrically connected to the piezoelectric body of each of the plurality of actuators;
- a common electrode having a plurality of second wiring patterns disposed on the vibrating plate so that the second wiring patterns do not overlap with the first wiring pattern, each of the plurality of second wiring patterns being electrically connected to the piezoelectric body of each of the plurality of actuators across spaces between the plurality of piezoelectric bodies;
- and
- a third wiring pattern disposed on the vibrating plate, extends in a direction different from a direction of the second wiring pattern, and is electrically connected to the second wiring pattern, wherein
- each second wiring pattern is connected to two current paths of one of the plurality of actuators.
7 more elements
Dependencies are inferred from the claim text.