Alps Electric Co., Ltd.

Michiaki Moroe

Michiharu Motonishi

Kazunari Takida

Hidetomi Majima

Hitoshi Yamazaki

A thermal head includes a head substrate having a common electrode and individual electrodes connected to exothermic bodies and a driving IC substrate having driving ICs controlling electrification of the individual electrodes and IC electrode pads arranged substantially in parallel with and at a smaller pitch (at most 60 &#x3bc;m) than the exothermic bodies. The individual electrodes and the corresponding IC electrode pads are bonded together with connection wire having a diameter of at most 23 &#x3bc;m. The connection wire includes a connection portion with a width larger than the wire diameter that is connected to the individual electrodes or the IC electrode pads and an upstanding portion raised from the connection portion at a predetermined angle. The surface area of the connection portion is not less than 0.0015 mmand the sectional area of the upstanding portion is not less than 0.00025 mm.

Thermal head and bonding connection method therefor

The invention provides a magnetic head capable of positively preventing electrostatic breakdown of an MR magnetic head device, and a method of manufacturing the magnetic head. A circuit board comprises at least a pair of leads for constructing a circuit, lands connected respectively to the leads, and solder bumps formed respectively on the lands. The solder bumps are arranged in an adjacent relationship and, when the solder bumps are crushed, peripheral portions of the solder bumps are pressed or spread so as to overlap with each other. The magnetic head includes the circuit board.

Method for manufacturing a circuit board capable of protecting an MR magnetic head therein against electrostatic breakdown and a method for manufacturing a magnetic head using the same

Circuit board capable of protecting an MR magnetic head therein against electrostatic breakdown and magnetic head using the same

Circuit board capable of preventing electrostatic breakdown and magnetic head using the same

A fastening portion 1a of a plate spring 1 of a head unit H supported by a support member 12 and an arm portion 1d is pressed by a pressurizing pin 22a to impart the same displacement to a slider 4 as a Z-height when the head unit is mounted to an apparatus. In this condition, the inclination of the slider 4 is measured, and, further, the arm portion 1d is twisted by a tool 30 to correct deformation in the roll direction. Since the plate spring 1 is corrected in the same condition as when the unit is mounted to the apparatus, an accurate correcting operation is conducted.

Growing community of inventors

Niigata-ken, Japan

Michiaki Moroe