Sony Corporation

Shinji Kayaba

Atsushi Nakamura

Makoto Ando

Hiroshi Tokunaga

Takaaki Murakami

Shinichi Horii

Shigeyoshi Hirashima

Takeo Eguchi

Iwao Ushinohama

Yuji Yakura

Manabu Tomita

A liquid ejection head includes a liquid chamber configured to contain liquid to be ejected from a nozzle, a liquid ejection member including the nozzle, and an energy generating element configured to provide energy to the liquid contained in the liquid chamber. The energy generating element ejects the liquid contained in the liquid chamber from the nozzle as a liquid droplet. A depression is formed on a surface of the liquid ejection member around the nozzle such that an opening of the depression has a width greater than a width of an opening of the nozzle and the nozzle is positioned at the bottom of the depression. The interior angle of the bottom corner of the depression is determined to be greater than 90 degrees.

Liquid ejection head, liquid ejection apparatus, and method for fabricating liquid ejection head

A print head is provided with at least ink-pressurizing cells, heating elements, and ink-ejection nozzles. In addition, the print head includes substrate members which form side surfaces and one end surface of the ink-pressurizing cells, and which are provided with the heating elements; a nozzle-formed member which forms the other end surface of the ink-pressurizing cells, and in which the ink-ejection nozzles, which individually correspond to the ink-pressurizing cells, are formed; and a head frame which supports the nozzle-formed member.

Print head, manufacturing method therefor, and printer

A liquid ejecting apparatus can array dots in line even when nozzles are arranged in line and ink droplets are ejected from a plurality of liquid ejecting parts with a time difference. The liquid ejecting apparatus includes a head in which the liquid ejecting parts are arranged in line in the X-direction, and in which a plurality of heating resistors are juxtaposed in the direction perpendicular to the Y-direction in each of the liquid ejecting parts. The liquid ejecting apparatus further includes an ejecting-direction changing means that can change the droplet ejecting direction to a plurality of directions along the Y-direction by applying energy to the juxtaposed heating resistors in different manners, a time-difference ejection means that forms a dot (D) by a second liquid ejecting part when a predetermined time elapses after a dot (D) is formed by a first liquid ejecting part, and an ejecting-direction control means that makes the ejecting direction of the droplet from the first liquid ejecting part different from the ejecting direction of the droplet from the second liquid ejecting part so that the distance between the landing position of the dot (D) in the first liquid ejecting part and the landing position of the dot (D) in the second liquid ejecting part in the Y-direction is shorter than the relative moving distance between the head and printing paper.

Liquid ejector and liquid ejecting method

A manufacturing method for a print head, in which a substrate member provided with heating elements is laminated to a nozzle-formed member in which ink-ejection nozzles are formed, includes the step of laminating a correcting member having approximately the same coefficient of linear expansion as the substrate member to the nozzle-formed member. A nozzle interval L of a nozzle-formed member which doesn't laminate a correcting member at an operating temperature T is determined as &equals;L (1&plus;&agr; &Dgr;T)/(1&plus;&agr; &Dgr;T), wherein L is the nozzle interval and a heater interval at the operating temperature after the print head is completed; &agr; and is the coefficient of linear expansion of the nozzle-formed member; &agr; is the coefficient of linear expansion of the correcting member; T is the laminating temperature of the nozzle-formed member and the correcting member; and &Dgr;T is the difference between the laminating temperature T and the operating temperature T .

Manufacturing method for print head

Print head, manufacturing method therefor and printer

Growing community of inventors

Tokyo, Japan

Shinji Kayaba