Fujitsu Corporation

Mutsuo Watanabe

Hiromitsu Soneda

Masayuki Sasaki

Kouichi Sanpei

Takumi Kawamura

Akira Iwaishi

Tomoyuki Akahoshi

Koichi Sanpei

Masahiro Ono

Akihiko Miyaki

Mitsuhiro Soneda

A nozzle plate to be mounted on an ink jet print head includes a plate body on which is formed a plurality of jet aperture portions from which ink is jetted and a water-repellant film formed on this plate body. The diameter of jet aperture portions formed on the plate body and the diameter of water-repellant film apertures formed on the water-repellant film so as to connect with the nozzle apertures are the same diameter R , so the ink jet flow can be accurately controlled.

Nozzle plate manufacturing method

An ink-jet head includes a head portion having a plurality of head segments and an ink feeding portion, where ink is supplied such that pipes each have one end connected to the head portion and the other end connected to one of ink feeding paths of the ink feeding portion. The pipes are held by elastic ring-shaped members that are further sidewise held by rigid ring-shaped members and vertically sandwiched between the ink feeding paths and an upper end portion of the head portion.

Ink-jet head and printer using the same

The present invention has an object to provide an inkjet head and a method for manufacturing the inkjet head which not only protects a member at and/or near a surface onto which the nozzle plate is connected (nozzle connection surface), but also shortens the manufacturing time. A protective layer is provided between the nozzle plate and the piezo-electric element, enabling only the protective layer to be polished, protecting the piezo-electric element from being damaged by the polishing when the nozzle connection surface is formed. After the inkjet head is completed, the protective layer prevents ink leakage to the piezo-electric element.

Inkjet head which arranges protective layer at surface to which nozzle plate is connected and method for manufacturing the inkjet head

The instant invention has an exemplified object to provide an inkjet head and recording device having such an inkjet head with a simpler structure as achieves higher quality of printing inexpensively than the conventional. The pressure-chamber plate of this invention is slit or divided into a plurality of elements.

Inkjet head formed of divided pressure-chamber plate, method for manufacturing the same, and recording device having the inkjet head

It is an exemplified object of the present invention to provide an inkjet head, its manufacturing method, and a recording device that can form a high-quality image while preventing an ink leakage. To accomplish the object, an indent is provided at a joint surface of a pressure chamber plate with an adhesive.

Inkjet head, its manufacturing method and recording device

The ink jet printer includes a pressure chamber plate having a plurality of pressure chambers 20 separated by bulkheads, and a piezoelectric member having drive sections arranged opposite to the pressure chambers via a vibrating plate. The drive sections are separated from each other by parallel extending grooves. The piezoelectric member has inner electrodes 32 embedded therein and exposed to the side surfaces of the drive sections. The exposed portions of the inner electrodes are covered by insulating members, so that no short circuit is caused between the inner electrodes provided in the piezoelectric member.

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Kawasaki, Japan

Mutsuo Watanabe