Alps Electric Co., Ltd.

Konishiroku Photo Industry Co., Ltd.

Nec Corporation

Konica Corporation

Tdk Corporation

Konica-minolta Holdings, Inc.

Minoru Yamada

Kiyoshi Sato

Hisayuki Yazawa

Eiji Ito

Kiyoshi Kobayashi

Hideki Gochou

Junichi Suetsugu

Kazuo Shima

Masataka Sawamura

Junichi Fujisawa

Kenji Miyama

Yoshihiro Hagihara

Toshinori Watanabe

Toru Takahashi

Ryosuke Uematsu

Masaru Nagai

Yasushi Hoshino

Shozo Kikugawa

Yuichi Akanabe

Yasutsugu Nakagawa

Tetsuo Okuno

Akira Koyama

Takeshi Ito

Kenji Honda

Sumihito Morita

Kenichi Yamaguchi

Naruaki Oki

Yoshiharu Takahashi

Tsuyoshi Kakita

Shizuo Ishii

Yasutoshi Fujii

Hiroyuki Horiuchi

Masamori Makino

Makoto Yoshida

Yoshiyuki Nojima

Saburo Yoneyama

Masao Kamio

Hirokazu Gunshi

Hideyuki Hashimoto

Shigenori Kato

Yasuhiro Yabe

Ryosuki Utmatsu

Keiko Nishihaba

In a plane perpendicular to an axial direction of a winding drum, side legs face each other along an X-direction. A Y-direction is perpendicular to the X-direction. A planar coil component is configured so that a point along the Y-direction, where width of a central leg is maximum along the X-direction is at a plus side of the Y-direction, in relation to a center of the Y-direction, of the central leg; width of the central leg along the X-direction monotonically decreases from the point; width of the central leg along the X-direction is longer than along the X-direction; distance between facing surfaces of the side legs is constant; the terminal board is on the minus side, along the Y-direction, of a flange; and an end of the winding extends through the flange at the minus side of the Y-direction.

Planar coil component

A main magnetic pore layer is formed on an insulating layer flattened into a high-flatness surface, and a yoke layer having a large film thickness is formed under the main magnetic pole layer independently of the main magnetic pole. The main magnetic pole layer has a front end surface formed in a shape with a width size gradually increasing in a direction of track width as the front end surface departs farther away from an auxiliary magnetic pole layer. A perpendicular magnetic recording head can be provided which can suppress the occurrence of fringing in a recording pattern, and can form the main magnetic pole layer with high pattern accuracy, and can satisfactorily introduce a recording magnetic field to a fore end of the main magnetic pole layer.

Method of manufacturing a perpendicular magnetic recording head

A method for manufacturing an inkjet print head with ink channels formed on a member including a piezoelectric body, and where ink is jetted from each of the ink channels by applying a voltage to electrodes provided on the piezoelectric body for each of the ink channels thereby driving the piezoelectric body. The method has the steps including adsorbing a catalyst onto the channel plate with the ink channel grooves; removing a part of the catalyst by a laser beam; and plating at least one side surface and a bottom surface of the channel plate to form a layer which serves as the electrodes, on the catalyst which has not been removed by the laser beam.

Manufacturing method of ink-jet head

In a thin-film magnetic head, a lower magnetic pole layer and a planarizing magnetic layer in continuity with the lower magnetic layer are arranged. Since a coil formation surface is positioned lower than the top surface of the lower magnetic pole layer and the planarizing magnetic layer, the front end of an upper magnetic core layer is formed to be a predetermined track width with a high accuracy. A thin-film magnetic head having good information writing characteristics and a method for manufacturing the thin-film magnetic head are thus provided.

Thin-film magnetic head having lower magnetic pole layer and insulator layer behind the lower magnetic pole layer in the direction of height of the pole layer, and method for manufacturing the thin-film magnetic head

A main magnetic pole layer is formed on an insulating layer flattened into a high-flatness surface, and a yoke layer having a large film thickness is formed under the main magnetic pole layer independently of the main magnetic pole. The main magnetic pole layer has a front end surface formed in a shape with a width size gradually increasing in a direction of track width as the front end surface departs farther away from an auxiliary magnetic pole layer. A perpendicular magnetic recording head can be provided which can suppress the occurrence of fringing in a recording pattern, and can form the main magnetic pole layer with high pattern accuracy, and can satisfactorily introduce a recording magnetic field to a fore end of the main magnetic pole layer.

A method for manufacturing a magnetic recording head includes the steps of forming a first lifting layer and a second lifting layer on a bottom core layer, forming an inorganic insulating layer in a gap between the first lifting layer and the second lifting layer, forming a groove in the inorganic insulating layer to form a coil layer, and forming the coil layer in the groove and over the groove by plating.

Method for manufacturing magnetic head including coil

A main magnetic pole layer is formed on an insulating layer flattened into a high-flatness surface, and a yoke layer having a large film thickness is formed on the main magnetic pole layer independently of the main magnetic pole. The main magnetic pole layer has a front end surface formed in a shape with a width size gradually increasing in a direction of track width as the front end surface departs farther away from an auxiliary magnetic pole layer. A perpendicular magnetic recording head can be provided which can suppress the occurrence of fringing in a recording pattern, and can form the main magnetic pole layer with high pattern accuracy, and can satisfactorily introduce a recording magnetic field to a fore end of the main magnetic pole layer.

Perpendicular magnetic recording head having main magnetic pole layer formed on high-flatness surface, and method of manufacturing the head

A track width regulating section having a track width, which is smaller than the resolution obtained by the wavelength of the light used for exposure and development of a resist, is formed between a lower core layer and an upper core layer. Since the width of the upper core layer is larger than the track width, magnetic saturation can be effectively reduced. Inclined faces are formed on the upper surface of the lower core layer so as to be inclined in directions away from the track width regulating section, thereby adequately preventing write fringing.

Thin-film head for reducing track width, preventing write fringing and reducing saturation

Perpendicular magnetic recording head having main magnetic pole layer formed on high-flatness surface of yoke layer, and method of manufacturing the head

An ink jet print head comprises a substrate formed with a heating resistor, an ink path defining member for defining an ink supply path, and a orifice plate, and in the orifice plate, there is formed an ink outlet at the position opposing the heating resistor. Further, a heating zone surrounding the heating resistor is formed at the position corresponding to the heating resistor of the ink supply path. The channel resistance of the ink supply path is set so that a relationship is established between a quantity q of the discharged ink drop, a sectional area A of the ink outlet, and a maximal projection h that a meniscus of the ink has when it projects from the ink outlet after it has restored the exit level from a retreat position it had after the drop of the ink had been discharged, such that 0<h<0.3 q/A. Consequently, there is obtained a high-speed printing of high quality without dispersion.

Ink jet print head

A processing method of electroless plating in which a catalyst layer is absorbed on a surface of a substrate, a laser beam is selectively applied to the catalyst layer, processing of electroless plating is applied to the substrate, thereby a plating layer is not formed on a part to which the laser beam has been applied, and a plating layer is formed on a part to which laser beam has not been applied.

Method of producing an ink jet print head through a processing method of electroless plating

Thin-film magnetic head for reducing track width, preventing write fringing and reducing magnetic saturation, and production method thereof

Growing community of inventors

Niigata-ken, Japan

Minoru Yamada