Seiko Epson Corporation

Takeuchi Mfg. Co., Ltd.

Seiko Epson Corporaition

Yutaka Yamazaki

Takashi Kawaguchi

Kazushige Umetsu

Makoto Okeya

Akihiro Sawada

Yoshihide Shimada

Masao Yoshioka

Yoshinao Miyata

Atsushi Miyazaki

Toshiya Usuda

Reiko Nagahama

Hajime Onishi

Yasutaka Matsumoto

Shigeaki Seki

Wataru Takahashi

Makoto Kato

Akio Takeuchi

Seiichi Fujita

Akira Yamamoto

Taisuke Nakashima

A flow passage forming member includes flow passage forming member main bodiesandthat are formed of a resin material and define at least a part of a flow passage, a metal protective filmthat is provided on a surface of the flow passage forming member main bodyand a surface of the flow passage forming member main bodydefining at least the flow passage and is formed of a metal material, and a protective filmthat is laminated on the metal protective filmand contains an oxide or a nitride of at least on element selected from the group consisting of tantalum (Ta), titanium (Ti), zirconium (Zr), niobium (Nb), vanadium (V), hafnium (Hf), silicon (Si), aluminum (Al), tungsten (W), and yttrium (Y).

Flow passage forming member, liquid ejecting head, liquid ejecting apparatus, method of producing flow passage forming member, and method of producing liquid ejecting head

A watch includes a crystal oscillator, a controller including an oscillation circuit configured to cause the crystal oscillator to oscillate, wiring that couples the crystal oscillator with the controller, and the crystal oscillator, a storage container that stores the crystal oscillator, the wiring, and the controller, and an outer case that stores the storage container, in which the crystal oscillator and the controller are placed side by side inside the storage container in plan view.

Watch

A watch includes a chargeable power supply, a crystal oscillation circuit including a crystal oscillator and an oscillation circuit and configured to stop oscillating when a power supply voltage falls below an oscillation stop voltage and to start oscillating when the power supply voltage exceeds an oscillation start voltage, which is higher than the oscillation stop voltage, and a divider circuit that outputs a reference signal by dividing an oscillation signal output from the oscillation circuit. The watch also includes a temperature compensation circuit that performs a temperature compensation function operation that compensates for variation of the reference signal due to a temperature, a first voltage detection circuit that detects that the power supply voltage exceeded a first voltage that is set higher than the oscillation start voltage, and a control circuit that starts the temperature compensation function operation of the temperature compensation circuit when the first voltage detection circuit detects that the power supply voltage exceeded the first voltage, and subsequently continues the temperature compensation function operation even when the power supply voltage falls below the first voltage.

Watch and method for controlling watch

A timepiece includes an arithmetic circuit, a first switch that controls connection of a temperature compensation table storage to a power supply circuit, and a second switch that controls connection of a device-difference compensation data storage to the power supply circuit. The arithmetic circuit calculates a compensation amount based on a temperature measured by a temperature detector, a temperature compensation data, a device-difference compensation data, and outputs to a frequency adjustment control circuit and a theoretical regulation circuit. The first switch is controlled to the connect state during a first power supply connection period including a temperature compensation data read period. The second switch is controlled to the connect state during a second power supply connection period including a device-difference compensation data read period.

Electronically controlled mechanical timepiece, control method of an electronically controlled mechanical timepiece, and electronic timepiece

An electronically controlled mechanical watch includes a mechanical energy source, a power generator including a rotor driven by the mechanical energy source, a capacitor configured to be chargeable and accumulate electrical energy generated by the power generator, and a crystal oscillation circuit including a crystal oscillator and an oscillation circuit and configured to stop oscillating when a voltage of the capacitor falls below an oscillation stop voltage and to start oscillating when the voltage exceeds an oscillation start voltage higher than the oscillation stop voltage. The watch also includes a temperature compensation circuit configured to perform a temperature compensation function operation compensating for variation of a reference signal due to a temperature, a first voltage detection circuit configured to detect that the voltage exceeded a first voltage that is set higher than the oscillation start voltage, and a control circuit configured to stop the temperature compensation function operation of the temperature compensation circuit until the first voltage detection circuit detects that the voltage exceeded the first voltage.

Electronically controlled mechanical watch and method for controlling electronically controlled mechanical watch

Provided are a timepiece having a temperature compensator drivable by a low voltage with low current consumption, and a control method of a timepiece. The timepiece includes an arithmetic circuit, a first switch that controls connection of a temperature compensation table storage to a power supply circuit, and a second switch that controls connection of a device-difference compensation data storage to the power supply circuit. The arithmetic circuit calculates a compensation amount based on a temperature measured by a temperature detector, a temperature compensation data, a device-difference compensation data, and outputs to a frequency adjustment control circuit and a theoretical regulation circuit. The first switch is controlled to the connect state during a first power supply connection period including a temperature compensation data read period. The second switch is controlled to the connect state during a second power supply connection period including a device-difference compensation data read period.

A wiring substrate at which a metal wire is formed includes a substrate containing a resin as a main component and an organic substance having a hydroxyl group; and a metal plating layer constituting the metal wire. A formation portion of the metal wire at one surface of the substrate is rougher than a non-formation portion of the metal wire at the one surface of the substrate, and has the organic substance in a state of being embedded in the resin, and a catalyst. The wiring substrate with such a configuration can increase the adhesion of the metal wire to the substrate.

Wiring substrate and method of manufacturing the wiring substrate

A wiring substrate includes a substrate containing a resin as a main component and including a mixed layer in which the resin and a catalyst are mixed together; and a metal wire disposed to cover the mixed layer and being in contact with the catalyst. The wiring substrate with such a configuration can increase the adhesion of the metal wire to the substrate.

An oscillation device includes an oscillation circuit configured including an oscillation inverter, and adapted to oscillate a resonator, a frequency adjustment circuit adapted to perform frequency adjustment of the oscillation circuit, and a constant voltage circuit adapted to drive the oscillation circuit, in the oscillation circuit and the frequency adjustment circuit, a gate and a substrate of a field-effect transistor having a connection relationship with one of a gate and a drain of the oscillation inverter are driven with a constant voltage.

Oscillation device and timepiece with temperature compensation function

A first circuit receives input signals of the first electric potential system which uses a first high potential and a first low potential as the power supply electric potential, and outputs a first signal which is a signal of the first electric potential system, a second circuit which generates output signals according to the input signal of the second electric potential system which uses as the power supply electric potential a second high potential of the first electric potential system, wherein the second circuit includes an initial stage inverter that receives the second signals and outputs third signals, and an initial stage switch that switches between connecting and disconnecting the initial stage inverter and a power supply that supplies the second high potential or a power supply that supplies the second low potential based on the first signals, and generates the output signals based on the third signals.

Level shifter circuit, integrated circuit device, electronic watch

A method for producing a liquid-ejecting head including a passage-forming substrate and a protective substrate. The passage-forming substrate has pressure-generating chambers communicating with nozzle orifices, piezoelectric devices that change the inner pressures of the pressure-generating chambers, and liquid supply channels for supplying the pressure-generating chambers. The protective substrate has a piezoelectric-device accommodating portion and a through-hole, through which wirings to lead electrodes extended from the piezoelectric devices pass thorough. The method includes forming the piezoelectric-device accommodating portion and a portion of the through-hole in the protective substrate while leaving a lid, a portion of the protective substrate, closing off an opening of the through-hole, bonding the protective substrate to the passage-forming substrate, forming the pressure-generating chambers and the liquid supply channels in the passage-forming substrate, forming a protective film on surfaces of the passage-forming substrate and the protective substrate, and removing the lid to complete the formation of the through-hole.

Method for producing liquid-ejecting head

An electrically driven industrial vehicle comprising a revolving body () attached to a undercarriage () so as to be able to turn horizontally; a power shovel device () for receiving a hydraulic drive force and operating, the power shovel device being mounted on the revolving body (); and a hydraulic drive force generating unit provided to the revolving body (), for generating hydraulic drive force for operating the power shovel device (). The hydraulic drive force generating unit has a hydraulic fluid tank () for storing hydraulic fluid; a hydraulic pump () for feeding the hydraulic fluid in the hydraulic fluid tank to the power shovel device (); an electric motor () for driving the hydraulic pump; and a lithium ion battery () for feeding electrical drive power to the electric motor.

Electrically driven industrial vehicle

A piezoelectric transducer that excites longitudinal vibration has a piezoelectric element, and a reinforcing member that is laminated with and affixed to the piezoelectric element and has a first void part. The first void part includes the center part of a location where strain produced by longitudinal vibration in the piezoelectric transducer or the reinforcing member or piezoelectric element is greatest.

Piezoelectric transducer, piezoelectric actuator, and portable device

A shovel loader () has a vehicle body frame (), a travel device (), a loader device (), and a drive power generation section for generating drive power for making the travel device () travel. The vehicle body frame () has a pair of side frames () arranged on both the left and right sides of the shovel loader (). The loader device () is made up of a pair of lift arms () vertically swingably attached to the pair of side frames () and of a bucket () vertically swingably attached to the forward end of the pair of lift arms (). The drive power generation section has a pair of electric motors () for individually transmitting drive power to the pair of travel devices () and capable of being controlled independent of each other so that a vehicle () can be made to travel in a manner the left and right are independent of each other, and also has a battery () for supplying electric power to the electric motors ().

A method for dividing a wafer into a plurality of chips is provided. The method includes providing recesses in a surface of the wafer at positions along boundaries between regions to become the individual chips, providing fragile portions having a predetermined width inside the wafer at positions along the boundaries by irradiation of the other surface of the wafer with a laser beam whose condensing point is placed inside the wafer, the fragile portions including connected portions at least at one of the surfaces of the wafer, and dividing the wafer at the fragile portions into the individual chips by applying an external force to the wafer.

Growing community of inventors

Suwa, Japan

Yutaka Yamazaki