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US 6,347,862 B1Granted
Ink-jet head
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsIsaku Kanno, Satoru Fujii, Ryoichi Takayama, Takeshi Kamada
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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsIsaku Kanno, Satoru Fujii, Ryoichi Takayama, Takeshi Kamada
Estimating the term…
There is provided an ink-jet head having ink outlets formed at a high density for use in an ink-jet recorder. The ink-jet head comprises ink outlets, compression chambers communicating with the ink outlets, and piezoelectric vibration sections, each being provided on a part of each of the compression chambers and including a piezoelectric film containing Pb, Ti and Zr, and electrodes provided on both sides of the piezoelectric film. The piezoelectric film comprises a first layer and a second layer which each have a perovskite structure and are formed in contact with each other, wherein the first layer is formed as a layer containing no Zr or as a layer containing a smaller amount of Zr than that contained in the second layer.
An ink-jet head comprising a body having ink outlets and compression chambers respectively communicating with each of said ink outlets, and piezoelectric vibration sections, each being provided on a part of each of said compression chambers and including a piezoelectric film containing Pb, Ti and Zr, and electrodes provided on both sides of said piezoelectric film, wherein said piezoelectric vibration sections generate flexural vibration to jet ink droplets from said ink outlets, characterized in that said piezoelectric film comprises a first layer which has a perovskite structure containing Sr or Ba, and a second layer which has a perovskite structure containing Pb, Ti and Zr and is formed in contact with said first layer.
An ink-jet head comprising a body having ink outlets and compression chambers respectively communicating with each of said ink outlets, and piezoelectric vibration sections, each being provided on a part of each of said compression chambers and including a piezoelectric film containing Pb, Ti and Zr, and electrodes provided on both sides of said piezoelectric film, wherein said piezoelectric vibration sections generate flexural vibration to jet ink droplets from said ink outlets, characterized in that said piezoelectric film comprises a first layer and a second layer which have perovskite structures, respectively, and are formed in contact with each other, and that the content of Zr in said first layer is smaller than that in said second layer.
An ink-jet head comprising a body having ink outlets and compression chambers respectively communicating with each of said ink outlets, and piezoelectric vibration sections, each being provided on a part of each of said compression chambers and including a piezoelectric film containing Pb, Ti and Zr, and electrodes provided on both sides of said piezoelectric film, wherein said piezoelectric vibration sections generate flexural vibration to jet ink droplets from said ink outlets, characterized in that said piezoelectric film comprises a first layer containing no Zr and a second layer containing Zr, which have perovskite structures, respectively, and are formed in contact with each other.
Dependencies are inferred from the claim text.