Printing head and ink jet recording apparatus using the same
An ink jet head which is -prevented from corrosion by ink, and an ink jet recording apparatus using the same. An ink-resistant thin film (25) made of Ti, a Ti compound, or Al2O3 is formed on the surface of recess portions (21 to 23) of a substrate in which a reservoir (8) for reserving ink, orifices (7) and pressure chambers (6) are formed. Since this ink-resistant thin film (25) is formed, corrosion can be restrained without reducing printing quality, without necessity to change the component/composition of the ink and the material of the head, and with little change of its manufacturing process, even if there is a fear that the head material may be corroded by the ink.
Seiko Epson Corporation
B B B B B B B B
B41J B41J B41J B41J B41J B41J B41J B41J
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Yuji Katsuji
Chino Arakawa