In jet head and method of manufacturing thereof
AssigneeBrother Kogyo Kabushiki Kaisha
InventorHiroshi Taira
Life of this patent
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Abstract
When all metal plates for forming a passage unit of an ink jet head are bonded together by metal bonding, a top metal plate will warp, and an actuator unit cannot be fitted in a uniform manner to this warped top metal plate, and if the actuator units are not fitted in a uniform manner to the top metal plate, a uniform amount of ink cannot be discharged from nozzles of the ink jet head. To deal with this, metal diffusion bonding of the metal plates is performed without the top metal plate being included therein, and the top metal plate is then caused to adhere by means of adhesive. There is thus no warping of the top metal plate, and consequently the actuator units can be fitted in a uniform manner to the top metal plate.
Claims11
A method of manufacturing an ink jet head, comprising steps of:
- preparing a stack of a plurality of metal plates;
- heating the stack under pressure to bond the plurality of metal plates and produce an incomplete passage unit;
- causing a top metal plate to adhere to the incomplete passage unit by means of an adhesive to complete the passage unit;
- and
- fixing an actuator unit to the top metal plate of the completed passage unit.
An ink jet head, comprising:
- a passage unit comprising a top metal plate and lower metal plates stacked together, the top metal plate and the lower metal plates being adhered by means of an adhesive, and the lower metal plates being bonded together by metal diffusion bonding, and
- an actuator unit fixed to the top metal plate of the passage unit.
An inkjet head, comprising:
- a passage unit comprising a top metal plate, intermediate metal plates and a bottom metal plate stacked together, the top metal plate and the intermediate metal plates being adhered by means of an adhesive, the intermediate metal plates being bonded together by metal diffusion bonding, and the intermediate metal plates and the bottom metal plate being adhered by means of an adhesive, and
- an actuator unit fixed to the top metal plate of the passage unit.
Dependencies are inferred from the claim text.