Ricoh Company, Ltd.

Japan Tobacco Inc.

Manabu Nishimura

Shinji Tanaka

Koji Sakamoto

Takahiko Kuroda

Makoto Tanaka

Kenichiroh Hashimoto

Mitsugu Irinoda

Shuya Abe

Kouji Ohnishi

Masaru Shinkai

Toshiaki Masuda

Satoshi Taguchi

Kanshi Abe

Keiji Ueda

Masahiro Ishimori

Hiromi Uematsu

Susumu Abe

Kaichi Ueno

Kohzoh Urasaki

Tsutoh Aoyama

Tomohiko Yoshioka

Kazuyuki Tsuchizawa

Method of manufacturing a cut stem with increased filling capacity comprises tearing a rod-like stem material having a water content of 20 to 50% by weight, shredding the torn rod-like stem material, and subjecting the rod-like cut stem material to expansion treatment.

Method of manufacturing cut stem, cut stem manufacturing apparatus, and cut stem

An electromechanical transducer includes a first electrode mounted on one of a substrate and a base film, an electromechanical transducer film mounted on the first electrode and made of a piezoelectric substance having a perovskite crystal structure, and a second electrode mounted on the electromechanical transducer film. The electromechanical transducer film includes a {100} plane preferentially oriented to be orthogonal to a thickness direction of the electromechanical transducer film and has a full width at half maximum corresponding to a {200} plane in an X-ray diffraction measurement curve in 2&#x3b8;-&#x3c9; scan that is measured by emitting an X-ray beam onto a surface of the electromechanical transducer film at an incident angle &#x3b8;. The full width at half maximum is not greater than 10 degrees.

Electromechanical transducer, droplet ejection head, and method for manufacturing electromechanical transducer

A liquid drop ejecting head includes a a nozzle plate to form nozzles, a liquid chamber substrate including one surface bonded to the nozzle plate and forming liquid chambers provided for the nozzles and communicating with the nozzles, a diaphragm bonded to the other surface of the liquid chamber substrate to form a part of each liquid chamber, and a pressure generating unit giving pressure oscillation to the diaphragm in accordance with a liquid drop eject signal to exert pressure on a liquid in each liquid chamber through the diaphragm. In the liquid drop ejecting head, a protection film is formed on an inner side wall of each liquid chamber by a chemical reaction of fluorocarbon and silicon fluoride oxide of a by-product formed on the inner side wall of the liquid chamber with the formation of the liquid chambers in the liquid chamber substrate.

Liquid drop ejecting head, image forming device, and method of manufacturing liquid drop ejecting head

An actuator element includes an electrode film; and an insulation film layered on the electrode film including a through hole for connecting a wiring which is formed on the insulation film to the electrode film. A shape of a rim of the through hole is either a closed curve free of corners or a polygon with vertex angles which are larger than 90 degrees.

Actuator element, liquid drop discharge head, liquid drop discharge apparatus and image forming apparatus

An approach applying a semiconductor manufacturing process in the manufacturing of an electrostatic actuator, such as for a droplet discharging head, liquid supply cartridge, inkjet recording apparatus and/or liquid jet apparatus, is provided. Such electrostatic actuator has high-reliability and less variation in characteristics.

Liquid discharge head, liquid supply cartridge, and liquid jet apparatus having electrostatic actuator formed by a semiconductor manufacturing process

A liquid drop ejecting head for ejecting liquid drops from nozzles communicating with liquid chambers includes a piezoelectric actuator including a diaphragm whose ends are fixed in a short-side direction of the diaphragm and an active element mounted on the diaphragm. The active element is contractible and extendable by a supply of a voltage to displace the diaphragm in an out-of-plane direction. The diaphragm is displaced with curvature so as to have a plurality of inflection points in the short-side direction. The active element is disposed in at least one area of an area from each of the ends of the diaphragm to a proximal inflection point of the inflection points and an area from one inflection point to another neighboring inflection point of the inflection points in a cross-section in the short-side direction of the diaphragm.

Piezoelectric actuator, liquid-drop ejecting head, and liquid-drop ejecting apparatus

An electrostatic actuator has high-reliability and less variation in characteristics. An electrode () is formed on a substrate (), and a plurality of partition parts () are formed on the electrode. A vibration plate () is formed on the partition parts (), and is deformable by an electrostatic force generated by a voltage applied to the electrode () so that an air gap () is formed between the partition parts () by etching a part of a sacrifice layer () formed between the electrode () and the vibration plate (). The partition parts () are formed of remaining parts of the sacrifice layer () after the etching.

Electrostatic actuator formed by a semiconductor manufacturing process

Growing community of inventors

Hyogo, Japan

Manabu Nishimura