Seiko Epson Corporation

Minoru Yajima

Akira Ichihashi

Akihisa Wanibe

Satoshi Shinada

Taku Ishizawa

Junhua Zhang

Yasuo Inaoka

Masayuki Sakai

Provided is a method for manufacturing a recording head having a head chip that ejects ink, an upstream flow path member, a downstream flow path member where an accommodating portion and a downstream flow path are disposed, a wiring member that is connected to a piezoelectric actuator in the head chip, a wiring substrate, a first insertion hole into which the wiring member and a tool are inserted, and a second insertion hole where a wiring member insertion portion into which the wiring member is inserted and a tool insertion portion into which the tool can be inserted are integrally formed, the method including inserting the tool into the tool insertion portion, holding the wiring member with the tool, withdrawing the tool from the tool insertion portion by moving the downstream flow path member to the head chip side, and inserting the wiring member into the wiring member insertion portion.

Method for manufacturing liquid ejecting head

In an ink cartridge, a negative pressure generating mechanism is disposed between an ink storage region and an ink supply port, and has a wall surface having two through-holes for ink flow, and a valve member contacted with and separated from the through-hole by receiving a pressure in an ink supply port side. Ink flowing via the through-hole is supplied via the through-hole to the ink supply port.

Liquid detecting device, liquid container and method of manufacturing liquid detecting device

A liquid container includes: a container body attachable to a container attachment portion of an apparatus side; a liquid chamber, provided in the container body, for accommodating a liquid therein; a liquid supply hole connectable to a liquid receiving portion of the apparatus side; a liquid leading path for leading the liquid stored in the liquid chamber to the liquid supply hole; an air open hole for introducing outside air into the liquid chamber as the liquid in the liquid chamber is consumed; pressure regulating means, provided in a portion of the liquid leading path, for regulating a pressure of the liquid to be supplied to the liquid receiving portion through the liquid supply hole and hindering a reverse flow of the liquid from the liquid supply hole to the liquid chamber; a first bypass path for causing first and second liquid leading passages of the liquid leading path, provided respectively before and after the pressure regulating means, to communicate with each other; and a first bypass blocking portion capable of blocking the bypass path.

Liquid container and liquid filling method

A circuit board () has a board main body (M), a pair of first electrodes () for contact with and electrical connection to electrodes () of a liquid consuming apparatus, the first electrodes () being formed on a first surface of the board main body (M), and a pair of second electrodes () for contact with and electrical connection to terminal plates () of a sensor unit (), the second electrodes () being formed on an opposite, second surface of the board main body (M) and electrically connected respectively to the first electrodes ().

Liquid container and circuit board for liquid container

A liquid container () has: an outer electrode () contactable with an electrode () of a liquid consuming apparatus; an electrode supporting member () which supports the outer electrode () and is fixed to a container body (); a piezoelectric sensor unit () which is discrete from the electrode supporting member (), which is attached to the container body () for detecting liquid existing in a part of a liquid supply path and which includes a piezoelectric element () having an electrode (); and a connector () which has an elasticity and which electrically connects the outer electrode () to the electrode () of the piezoelectric element ().

A mis-assembly preventing structure is provided to a liquid container to allow assembly of parts when the parts are assembled in an adequate direction and to prevent the assembly of the parts when the part are assembled in an inadequate direction. For example the structure can be provided to a sensor unit () and a cartridge case (), and can be constructed by engagement hooks () and engagement concave portions () for receiving the engagement hooks ().

Container having liquid detecting function, and sensor unit

A liquid detecting device () including: a unit base (), provided with a recessed portion () on an upper face thereof and containing a first material; a sensor base (), accommodated in the recessed portion and containing a second material different from the first material; a sensor chip (), mounted on an upper face of the sensor base () and having a sensor cavity () for receiving a liquid as a detection target, in which a lower face of the sensor cavity () is formed to be opened for allowing the liquid to flow therein and an upper face thereof is closed by a vibration plate () and provided with a piezoelectric element () mounted on an upper face of the vibration plate (); an adhesive layer (), formed on the upper face of the sensor base and fixing and sealing the sensor chip () and the sensor base () to each other; and an adhesive film (), which fixes and seals the sensor base () and the unit base () to each other and of which an inner peripheral portion is adhered to the upper face of the sensor base () and an outer peripheral portion is adhered to the upper face of the unit base ().

Growing community of inventors

Nagano, Japan

Minoru Yajima