Ink-jet head and method of manufacturing the same
AssigneeToshiba Tec Kabushiki Kaisha
InventorIsao Suzuki
Life of this patent
Estimating the term…
Abstract
According to one embodiment, an ink-jet head includes a piezoelectric member which forms an ink pressure chamber, an electrode disposed on a side surface of the piezoelectric member, a nozzle plate attached to the piezoelectric member and including a nozzle hole communicating with the ink pressure chamber, a surface of the nozzle plate including a top surface of the nozzle plate, and a protection film which covers the surface of the nozzle plate, a peripheral portion of an adhesion part between the piezoelectric member and the nozzle plate, and the electrode. A recess is formed in a part of the protection film covering the top surface of the nozzle plate. The part of the protection film corresponds to a peripheral area of the nozzle hole.
Claims14
An ink-jet head comprising:
- a piezoelectric member which forms an ink pressure chamber;
- an electrode disposed on a side surface of the piezoelectric member;
- a nozzle plate attached to the piezoelectric member, the nozzle plate including a nozzle hole communicating with the ink pressure chamber, a top surface, a back surface, and an inner wall;
- and
- a protection film which covers the top surface of the nozzle plate, the back surface of the nozzle plate, the inner wall of the nozzle plate, a peripheral portion of an adhesion part between the piezoelectric member and the nozzle plate, and the electrode, the protection film including a recess formed in a part of the protection film covering the top surface of the nozzle plate, the part of the protection film corresponding to a peripheral area of the nozzle hole.
An ink-jet head comprising:
- a piezoelectric member which forms an ink pressure chamber;
- an electrode disposed on a side surface of the piezoelectric member;
- a nozzle plate attached to the piezoelectric member, the nozzle plate including a nozzle hole communicating with the ink pressure chamber, a top surface, a back surface, and an inner wall;
- and
- a protection film which covers the top surface of the nozzle plate, the back surface of the nozzle plate, the inner wall of the nozzle plate, a peripheral portion of an adhesion part between the piezoelectric member and the nozzle plate, and the electrode, wherein at least a part of the top surface of the nozzle plate is not covered by the protection film, the part of the top surface corresponding to a peripheral area of the nozzle hole.
Dependencies are inferred from the claim text.