Seiko Epson Corporation

Siko Epson Corporation

Taro Takekoshi

Masahiro Fujii

Tomohiro Makigaki

Shigeo Nojima

Koji Kitahara

Masatoshi Yonekubo

Kazuhiko Sato

Yusuke Hirasawa

Toshio Arimura

Hiroyuki Ishikawa

Hiroyuki Maruyama

Tomoyuki Miyazawa

Masato Haga

Seiichi Fujita

Takashi Takeda

Izumi Nozawa

Takeo Seino

Seiya Sato

Yusuke Yamashita

Yasuhiro Ogura

Seiji Tojo

Shunichi Hizawa

Kiyoshi Ito

Hirokazu Ito

Akihiko Shiho

Noritsuna Rokuhara

Nanami Sakai

Norihisa Kobayashi

Hidenori Tanaka

Takahiro Asada

A mounting unit includes a mounting portion to which a liquid container that accommodates a liquid is mounted, in which the mounting portion has a liquid introduction portion that is inserted into the liquid container that is mounted to the mounting portion, and a first receiving portion that is provided below the liquid introduction portion, the first receiving portion has a first recess portion and a second recess portion, the liquid introduction portion extends in a direction opposite to a mounting direction that is a direction in which the liquid container moves when the liquid container is mounted to the mounting portion, and the second recess portion is provided at a position closer to a tip of the liquid introduction portion than the first recess portion is in the mounting direction.

Mounting unit and liquid ejection apparatus

There is provided a flow channel member in which a flow channel of a liquid is formed by a plurality of flow channel forming members, the flow channel member including: a first flow channel forming member that includes a light absorbing member having absorbing properties with respect to laser light; a second flow channel forming member that includes a light transmitting member having transmitting properties with respect to the laser light and is welded to a first surface of the first flow channel forming member; and a third flow channel forming member that includes a light transmitting member having transmitting properties with respect to the laser light and is welded to a second surface of the first flow channel forming member. The first surface and the second surface are provided at positions where planes along the both surfaces intersect with each other.

Flow channel member, liquid ejecting apparatus, and method for manufacturing flow channel member

A liquid ejecting apparatus includes a liquid ejecting head that ejects a liquid to a medium transported along a transport path, a suction mechanism that sucks an interior of the liquid ejecting head, an atmospheric pressure detection unit that has a vent for communication with an atmosphere and that detects atmospheric pressure, and a control unit that controls operation of the suction mechanism on the basis of a value of atmospheric pressure detected by the atmospheric pressure detection unit. The atmospheric pressure detection unit is disposed at a location that is outside the transport path and that is higher than the transport path.

Liquid ejecting apparatus and control method

Waste ink box for printer

A liquid ejecting apparatus includes a liquid ejecting head configured to eject liquid onto a medium, a mounting portion on which a liquid collection container including an absorber that absorbs liquid is removably mounted, a liquid receiving portion configured to receive the liquid ejected by the liquid ejecting head, and a relay portion located in a region communicating with the liquid receiving portion. The relay portion is located at a position in contact with the absorber of the liquid collection container mounted in the mounting portion.

Waste liquid reservoir and liquid ejecting apparatus

A waste liquid container is detachably mounted on a mounting unit which includes a discharge portion discharging a waste liquid and a projection to which a substrate connection portion is joined. The waste liquid container includes: a containing portion that is able to contain the waste liquid; a connection concave portion that is opened in a mounting direction; a circuit substrate that includes connection terminals electrically connected to the substrate connection portion and is joined to the connection concave portion; and a waste liquid introduction portion that is connected to the discharge portion. In the connection concave portion, one pair of guide portions guiding the projection is formed so that the connection terminals are interposed therebetween in a width direction intersecting the mounting direction. Of the pair of guide portions, one guide portion is disposed between the connection terminals and the waste liquid introduction portion in the width direction.

Waste liquid container, attachment, waste liquid collection unit, and liquid ejecting apparatus

A fluid ejecting apparatus includes a fluid containing portion, a fluid discharging portion, a flow passage forming portion and a valve mechanism. The fluid containing portion contains fluid. The fluid discharging portion discharges the fluid. The flow passage forming portion forms a fluid flow passage that extends from the fluid containing portion to the fluid discharging portion. The valve mechanism is able to open or close the fluid flow passage. The fluid ejecting apparatus is placed in an initial state before an initial use of the fluid ejecting apparatus, wherein fluid is contained in the fluid containing portion and at least portion of the fluid flow passage from a position of the fluid containing portion to a position of the valve mechanism is filled with the fluid and the fluid flow passage is closed by the valve mechanism.

Fluid ejecting apparatus and fluid filling method of fluid ejecting apparatus

A silicon nozzle plate includes nozzles each with a first nozzle portion having a circular cross-section and a second nozzle portion having a circular cross-section wherein the circular cross-section of the first nozzle portion is smaller than the circular cross-section of the second nozzle portion. In one embodiment the nozzle plate is utilized in an inkjet head and includes a recess having a flat bottom surface that commonly communicates with a plurality of first nozzle portions and a through hole that exposes terminal portions that supply control signals to pressure generators.

Ejection device and inkjet head with silicon nozzle plate

A method for manufacturing an electrostatic actuator comprises a vibrating plate, an electrode plate facing the vibrating plate, and a vibrating chamber formed between the electrode plate and the vibrating plate, wherein the vibrating plate is displaced by electrostatic force, by applying voltage between the vibrating plate and the electrode plate, the method comprises: a process for forming a pressure compensating chamber communicating with the vibrating chamber; a process for forming a displacement plate at a portion of the pressure compensating chamber, displaceable according to external atmospheric pressure, into a warped form curved so as to protrude in a direction away from the facing inner wall of the pressure compensating chamber; and a process for shutting off and sealing the pressure compensating chamber from the external atmosphere, along with the vibrating chamber.

Method for manufacturing an electrostatic actuator

An electrostatic ink-jet head ( ) in which the present invention is applied comprises a pressure chamber ( ) communicating with an ink nozzle ( ), and an atmospheric pressure chamber ( ) opened to the atmosphere, with a vibrating plate ( ) being provided on the base plane of the pressure chamber ( ). Voltage applied between the vibrating plate ( ) and an electrode ( ) causes the vibrating plate ( ) to vibrate due to electrostatic force, thereby discharging ink droplets. A vibrating chamber ( ) communicates with a pressure compensating chamber ( ), and a displacement plate ( ) capable of being displaced in the direction outward from the plane according to fluctuations in the external, atmospheric pressure is formed at the base plane of the pressure compensating chamber ( ). Displacement of the displacement plate ( ) increases/decreases the volume of the pressure compensating chamber ( ), and the internal pressure of the vibrating chambers ( ) communicating thereof is adjusted to match the external atmospheric pressure. Accordingly, the vibration properties of the vibrating plate ( ) can be maintained constant even when the external atmospheric pressure fluctuates, and proper ink droplet discharging action can be maintained.

Electrostatic actuator, manufacturing method therefor, and liquid discharging device using the same

When a nozzle with a stepwise cross-section, which is provided with a small cross-sectional nozzle portion formed on the front side thereof and with a large cross-sectional nozzle portion formed on the rear side thereof in a discharge direction, respectively, is formed by applying etching to a silicon wafer for forming a nozzle plate , a resist film is formed on a surface of the silicon wafer , and patterning by half-etching and patterning by full-etching is applied to the resist film . Next, anisotropic-dry-etching is applied to the silicon wafer by ICP discharge, thereby forming grooves at the full-etched portions. Next, the resist film at the half-etched portions is removed and anisotropic-dry-etching is applied to the portions from which the resist film is removed by ICP discharge. As a result, there can be simply formed on a monocrystalline silicon substrate an ink nozzle having a stepwise cross-section and further having an action, which is larger than that of a conventional ink nozzle, for aligning the directions of pressures applied from cavities to nozzles in a nozzle axis direction.

Method of forming nozzle for injection device and method of manufacturing inkjet head

An ink jet head that prevents pressure interference between nozzles without incurring an increase in size is provided. A pressure change buffer is provided for preventing pressure interference in this ink jet head can also be easily formed with the desired characteristics. An ink reservoir , orifice , and ejection chambers are formed in a horizontal arrangement between the nozzle plate and cavity plate of this ink jet head . Pressure change buffer for buffering pressure change in the ink reservoir is formed in a first wall , which is part of the wall determining the shape of the ink reservoir . It is therefore possible to prevent pressure interference between nozzles without incurring an increase in size. In addition, the pressure change buffer can be easily formed with the desired operating characteristics.

Ink jet recording apparatus, and an ink jet head

An ink jet recording apparatus that achieves sufficient attraction force even when the actuator is sealed. In the ink jet recording apparatus, an electric pulse is applied between a diaphragm and electrode by a drive circuit to deform a diaphragm by electrostatic force to eject an ink droplet from a nozzle comprises a vibration chamber containing a wall surface formed by the diaphragm and a wall surface on which the electrode is formed, and a first cavity communicating with the vibration chamber and containing a wall surface on which is provided a lead for connecting the drive circuit and electrode. The vibration chamber is sealed airtight, and comprises a second cavity communicating with the vibration chamber or first cavity for increasing the volume of the airtight sealed part of the actuator.

Ink jet recording apparatus

A plurality of inclined planes (1419) are formed in the same substrate (1406) and a polarizing optical thin film is provided on these inclined planes. These inclined planes are filled with a transparent material so as to form a small sized and complexed polarizer. This polarizer is excellent in transmission ratio and in extinction ratio. With this polarizer, it is possible to detect a magneto-optical signal with a high signal-to-noise ratio. This polarizer is used as a cover of a package (1408) of an optical head in which a light receiving device (1410, 1411) and a light emitting device (1409) are contained in the form of a single piece. There is also provided an optical element capable of adjusting optical paths so that the optical length of a returning optical beam may be different from the optical length of a forward optical beam. With this optical element, it becomes possible to delete the initial offset in a focusing error signal, and thus adjustment process becomes unnecessary. With these arrangements, it is possible to achieve the size reduction, simplification, and improvement of performance associated with an optical head for use in a magneto-optical recording/reproducing device.

Polarizer, including thin polarizing film, optical element with

An optical head for use in an optical recording apparatus contains a lens element that permits independent setting of the magnification and numerical aperture for a forward optical system and a rearward optical system. The optical head includes a light beam emitting assembly that emits a beam of light and a light beam separating assembly. A light beam focusing element focuses a forward light beam onto an optical recording medium. The light beam emitted from the light beam emitting assembly follows a forward optical path passing through the light beam separating assembly as a non-diffracted light beam and is focused onto the optical recording medium. A rearward light beam is reflected from the optical recording medium and follows a rearward optical path passing through the focusing element and the light beam separating assembly such that the rearward light beam is deflected to a light detection device. The lens element is positioned in at least one of the forward optical path and the rearward optical path.

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Shiojiri, Japan

Taro Takekoshi