Ink jet head having nozzle plate equipped with piezoelectric elements
AssigneesToshiba Tec Kabushiki Kaisha, Kabushiki Kaisha Toshiba
InventorsTakashi KAWAKUBO, Kazuhide ABE, Yasushi TOMIZAWA, Ryuichi ARAI, Ryutaro KUSUNOKI, Osamu TAKAGI
Life of this patent
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Abstract
An ink jet head includes: a pressure chamber to be filled with ink formed in a pressure chamber structure, the pressure chamber in which an etching limiter made of a material different from a material of the pressure chamber structure is formed on an inner wall surface of the pressure chamber; a nozzle plate comprising a nozzle that leading to the pressure chamber and a movable range fitted to the etching limiter; and a flat driver comprising a piezoelectric body to operate the movable range and arranged on the nozzle plate.
Claims17
An ink jet head comprising:
- a pressure chamber to be filled with ink formed in a pressure chamber structure, the pressure chamber in which an etching limiter made of a material different from a material of the pressure chamber structure is formed on an inner wall surface of the pressure chamber;
- a nozzle plate comprising a nozzle that leading to the pressure chamber and a movable range fitted to the etching limiter;
- and
- a flat driver comprising a piezoelectric body to operate the movable range and arranged on the nozzle plate.
An ink jet recording apparatus comprising:
- a pressure chamber to be filled with ink formed in a pressure chamber structure, the pressure chamber in which an etching limiter made of a material different from a material of the pressure chamber structure is formed on an inner wall surface of the pressure chamber;
- a nozzle plate comprising a nozzle that leading to the pressure chamber and a movable range fitted to the etching limiter;
- a flat driver comprising a piezoelectric body to operate the movable range and arranged on the nozzle plate;
- and
- a conveyor for conveying a recording medium to the position where ink is ejected from the nozzle.
A method of manufacturing an ink jet head comprising:
- forming etching limiter at the first surface of the pressure chamber structure along the inner periphery of the pressure chamber;
- reducing the etching rate of the pressure chamber structure at the etching limiter;
- and
- etching the pressure chamber structure along the inner periphery of the etching limiter.
Dependencies are inferred from the claim text.