Seiko Instruments Inc

Mitsuo Iwatate

Yoshifumi Nishino

Naoki Nemoto

Yoshibumi Asano

Masami Takahashi

Nobuatsu Takami

A piezoelectric oscillator which can conduct fine trimming adjustment and adjust frequencies highly precisely, particularly with no use of an expensive laser trimming apparatus with a small spot diameter, and a method of the same are provided. The method includes: a first step wherein a first spot train is formed on a mass adjustment film at a pitch smaller than the diameter of a film removal spot matched with the spot diameter of laser, and a second step wherein a train space to the first spot train is adjusted in accordance with the target frequency of a tuning fork crystal vibrating piece to form a second train and after, and these steps are in turn conducted, whereby fine trimming adjustment is performed.

Piezoelectric oscillator having a tuning fork piezoelectric vibrating piece

A core slider mount apparatus and method wherein: a core slider picked up from a core slider container is positioned while clamped in X- and Y-axis directions by first positioning catches of a core slider positioner and second positioning catches of a core mount chuck; a positioning error between an adhering portion of a work and the core slider is corrected based on position information of the work set on a work table; and the core slider is thereafter mounted on the adhering portion of the work.

Growing community of inventors

Chiba, Japan

Mitsuo Iwatate