Pioneer Electronic Corporation

Osamu Yagisawa

Isami Kenmotsu

Yusuke Akama

Katsuhiko Tanimoto

Tomonari Ishikawa

Haruhisa Maruyama

Hiroaki Watanabe

Ken-ichi Ishiguro

An optical disk recording and/or reproducing apparatus records and/or reproduces information on an information record surface of an optical disk loaded thereto. The optical pickup apparatus for the optical disk recording and/or reproducing apparatus is provided with: two types of optical pickups for at least two types of optical disks respectively; first and second guiding rails arranged substantially parallel to each other such that the information record surface of the loaded optical disk is disposed between the first and second guiding rails, for respectively guiding the optical pickups along the information record surface of the loaded optical disk in a radial direction of the loaded optical disk; first and second retracting rails respectively connected to the first and second guiding rails, for retracting thereonto the optical pickups from the first and second guiding rails through linkages with the first and second guiding rails respectively; a rotator frame for holding the first and second retracting rails; and a rotating mechanism for rotating the rotator frame around an axis parallel to the first and second retracting rails and for swapping the first and second retracting rails to each other.

Optical pickup apparatus

An optical disk recording and/or reproducing apparatus, records and/or reproduces information on an information record surface of an optical disk loaded thereto. The optical pickup apparatus for the optical disk recording and/or reproducing apparatus is provided with: a base having a pair of plate portions opposed to each other; two types of optical pickups; first and second guiding rails arranged substantially parallel to each other and disposed on the plate portions of the base respectively, for respectively guiding the optical pickups along the information record surface of the loaded optical disk in a radial direction of the loaded optical disk; first and second retracting rails respectively connected to the first and second guiding rails, for retracting thereonto the optical pickups from the first and second guiding rails through linkages with the first and second guiding rails respectively; a rotator frame for holding the first and second retracting rails; a swinger frame, for holding the rotator frame through a first spindle parallel to the first and second retracting rails, held by the base through a second spindle parallel to the first spindle; a swinging mechanism for swinging the swinger frame around the second spindle; and a rotating mechanism for rotating the rotator frame and for swapping the first and second retracting rails to each other after the swinging mechanism swings the swinger frame toward one direction.

An apparatus for injection molding a substrate of an information recording disk in which melted molding material is injected into a mold space after a pair of mold bodies are clamped together. An uneven surface area is provided between a cutting device for cutting the cured molding material at the molding surface and an aperture for supplying the pressurized gas for causing the cured molding material to be released. The flow of pressurized gas through the cut portion of the cured molding material is prevented and force is generated by the pressurized gas causing the cured molding material and a stamper forming the molding surface to release uniformly from the mold.

Growing community of inventors

Tokorozawa, Japan

Osamu Yagisawa