Sharp Kabushiki Kaisha Corporation

Kazutaka Abe

Hiroshi Ishii

Tetsuo Iwaki

Koji Yamabuchi

Syunzi Nakai

Hideshi Ohtsuka

Yoshiyuki Yokomachi

Yukihiro Mizumoto

Takashi Koyama

Akio Tanaka

Fumihiko Takemoto

Thickness information and refractive index information of a light transmitting layer are recorded in advance on an optical recording medium. Based on the thickness information and the refractive index information of the light transmitting layer, space between two lens units of an objective lens system is adjusted in an optical recording and reproducing apparatus, so that spherical aberration is adjusted. Accordingly, in the optical recording and reproducing apparatus using two lens units, it becomes possible to correctly record or reproduce the information to and from the optical recording medium.

Optical recording medium and optical recording and reproducing apparatus

A loading lever having loading lever pins is fixed on a main chassis. Loading arms having loading arm depressed portions are rotatably attached to a slide chassis. The loading arm depressed portion engages with the loading lever pin, and the loading arm depressed portion is engaged with the loading lever pin, and in this state, the slide chassis moves in the direction of the arrow B. Therefore, loading arms move in the direction of the arrows J and K. Since the loading arms are rotated, it becomes unnecessary to slide the loading lever, and therefore, the structure of the magnetic recording reproducing apparatus can be made simple.

Simplified cassette loading mechanism for a magnetic recording and

A recording head for a printer is manufactured by printing a thick film of paste containing an electrode material such as tungsten on a ceramic substrate with hardness nearly equal to or less than that of tungsten and firing the substrate and the film simultaneously in a single process.

Multi-stylus recording head of a printer

Growing community of inventors

Kitakatsuragi-gun, Japan

Kazutaka Abe