Seiko Epson Corporation

Toshiya Okada

Yasunori Koike

Shoma Kudo

Katsutomo Tsukahara

Takashi Koase

Nobutaka Suzuki

Keigo Iizawa

Tetsuya Takamoto

Satoshi Tamai

Toru Nakazawa

Yutaka Kobayashi

Masayuki Kanazawa

Naofumi Mimura

Yoichi Yamada

Masaru Kobashi

Takayuki Kawakami

Masayoshi Yamada

Hikaru Iwai

Shigeaki Muramatsu

An ultrasonic device includes an ultrasonic element configured to perform at least one of transmission of an ultrasonic wave along a first axis and reception of the ultrasonic wave input along the first axis, and a protective member provided on the first axis to cover the ultrasonic element. The protective member has a first surface provided with at least one hole through which the ultrasonic wave travelling along the first axis passes, and a second surface intersecting with the first surface and provided with a first opening through which foreign matter entering from the at least one hole is discharged.

Ultrasonic device

A liquid jet apparatus comprises a liquid jet head, a carriage carrying the liquid jet head in a side-to-side direction, a liquid flow channel, and a liquid container in fluid communication with the liquid jet head through the liquid flow channel. The liquid container includes a liquid containing chamber arranged along a front/back direction orthogonal to the side-to-side direction; a liquid outlet port, from which the liquid contained in the liquid containing chamber flows to the liquid flow channel; and a liquid inlet port, through which the liquid is injected into the liquid containing chamber. The liquid inlet port has an end surface that does not face in a vertical direction relative to a normal posture of the apparatus.

Liquid container, liquid consuming apparatus, liquid supply system and liquid container unit

A liquid container includes an ink chamber containing an ink to be supplied via a tube to a liquid ejecting head consuming the ink; an outlet port from which the ink contained in the ink chamber flows to the tube side; an injection port through which the ink can be injected into the ink chamber; and an air intake port taking air into the ink chamber from a further vertically upper position than a liquid level of the ink when the ink is contained in the ink chamber. If the ink equal to 5% of containing capacity containable in the ink chamber flows from the outlet port, the liquid container has an area where a fluctuation range of the liquid level of the ink inside the ink chamber becomes 5% or less of the cubic root of the containing capacity.

Liquid conatiner, liquid consuming apparatus, liquid supply system and liquid container unit

When an ink film between an outer cap and a nozzle face is broken, an ink film formed between an inner cap and the nozzle face is not broken for the following reason. That is, when the ink film between the outer cap and the nozzle face is broken, a negative pressure is not generated on a space formed by the inner cap because the ink film between the inner cap and the nozzle face is formed to be thick and the space communicates with the outside environment by cutouts. Therefore, the ink film formed on the inner cap is not broken at a time when the ink film formed on the outer cap is broken to the inner side with a negative pressure. This makes it possible to suppress splashing droplets from traveling to nozzle rows.

Liquid ejecting apparatus

A platen unit includes a platen that has a hole for sucking a medium, a platen supporting member that has an internal space which communicates with the hole of the platen, and an elastic member that is provided between the platen and the platen supporting member, and keeps airtightness between the platen and the platen supporting member. In the platen unit, the platen is movable in an up-down direction on the elastic member.

Platen unit and liquid ejecting apparatus

A liquid ejecting apparatus includes a platen disposed with a gap from a nozzle plate of a recording head and supporting a recording medium in ejecting, and an platen application voltage generating unit generating an electric field having a direction different from an electric field generated between an individual external electrode of a piezoelectric vibrator and nozzles, between the nozzle plate and the platen, in which the intensity of the electric field generated by the applied-to-plate voltage generating unit is set in between the maximum electric field intensity and the minimum electric field intensity between the individual external electrode and the nozzles.

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Chino, Japan

Toshiya Okada