Ink jet recording head using a piezoelectric element having an asymmetrical electric field applied thereto
AssigneeCanon Kabushiki Kaisha
InventorJiro Moriyama
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Abstract
An ink jet recording head includes a piezoelectric element with an outer cross-sectional shape having opposed, curved first surfaces and opposed second surfaces, which may be formed by cutting off opposite sides of a circular cross-section piezoelectric element on diametrically opposed chords. An electric field applied to the piezoelectric element is stronger in one direction than another, thereby increasing the discharge efficiency of the ink jet head.
Claims16
An ink jet recording head including a piezoelectric element having an outer cross-sectional shape in a plane perpendicular to the direction in which ink is discharged therefrom, said shape comprising opposed, curved first surfaces and opposed second surfaces, and having an inner surface defining a hollow portion providing a path for guiding the ink to be discharged from the head, wherein:
- one of said first surfaces has an electrode disposed thereon, and
- said piezoelectric element is deformable by applying a voltage to said electrode to create in said plane an electric field stronger in one direction than in a direction different from said one direction to more efficiently discharge ink.
An ink jet recording head including a piezoelectric element having an outer cross-sectional shape in a plane perpendicular to the direction in which ink is discharged therefrom, said shape comprising opposed, curved first surfaces and opposed second surfaces, and having an inner surface defining a hollow portion providing a path for guiding the ink to be discharged from the head, wherein:
- one of said second surfaces has a first electrode disposed thereon, and
- said piezoelectric element is deformable by applying a voltage to said electrode to create in said plane an electric field stronger in one direction than in a direction different from said one direction to more efficiently discharge ink.
Dependencies are inferred from the claim text.