Seiko Epson Corporation

Seiji Kinoshita

Takahiro Yamashita

Toshihiro Yokozawa

Shinichi Nakamura

A pressure-regulating valve in which the pressure of a functional liquid fed to a primary chamber from a functional liquid feeding means is regulated by opening and closing a valve body, the functional liquid is fed to a secondary chamber, and the functional liquid is fed from the secondary chamber to an inkjet-type functional droplet ejection head; wherein the valve body has a valve body main body that directly opens and closes with respect to a valve seat, the valve body main body being provided to the primary chamber; and a valve holder including a holding part that holds the valve body main body and an actuating shaft that comes in contact with a pressure-receiving membrane, the actuating shaft extending concentrically through the communication flow passage from the holding part; the actuating shaft is formed so as to taper to a point toward the pressure-receiving membrane; and the communication flow passage is formed to have a complementary shape with respect to the actuating shaft.

Pressure-regulating valve and liquid droplet ejection apparatus having the same

An irradiation device includes: a light source having an amalgam alloy member that is disposed on a part of the inner surface of a light source tube; and a chamber in which the light source is disposed. The chamber includes: a main chamber body; and a first gas inflow port and a first gas outflow port that are formed in the main chamber body. The first gas inflow port and the first gas outflow port are arranged so that the outer surface of the part of the light source tube where the amalgam alloy member is disposed is positioned in a flow path of a gas that flows in through the first gas inflow port and flows out through the first gas outflow port.

Irradiation device and irradiation method

A pressure-regulating valve for opening and closing, based on atmospheric pressure, a valve body provided to a communication flow passage via which a primary chamber and a secondary chamber communicate inside a valve housing, with the aid of a pressure-receiving membrane that constitutes one surface of the secondary chamber, for regulating the pressure of a liquid fed to the primary chamber via an inflow port, and for feeding the liquid from the secondary chamber via an outflow port; the pressure-regulating valve wherein a cover is provided for allowing action of the pressure-receiving membrane and for covering the pressure-receiving membrane; and the cover has light-blocking properties.

Pressure-regulating valve and liquid droplet ejection apparatus

An internal wall of a secondary chamber excluding one surface includes a flat wall portion with a secondary-chamber-side opening of the communication flow passage being formed in the center portion thereof; a conforming wall portion with which a diaphragm deformed maximally in the minus direction makes conforming contact, the conforming wall portion being connected to the outside of the flat wall portion and having an outflow opening communicating with an outflow port formed at the bottom of the conforming wall portion; and a flow passage groove extending upward from the flat wall portion to cut into the conforming wall portion.

Growing community of inventors

Suwa, Japan

Seiji Kinoshita