Pioneer Corporation

Pioneer Micro Technology Corporation

Pinoeer Corporation

Kenjiro Fujimoto

Takanori Maeda

Masahiro Ishimori

Shuntaro Mori

Jun Suzuki

Atsushi Onoe

Hirokazu Takahashi

Tomotaka Yabe

Mitsuru Koarai

Yuuichi Yamamura

Yuji Fukasawa

An actuator () is provided with: a movable part (); a support part () which supports the movable part; and a plurality of torsion bars () (i) each of which connects the movable part and the support part along a long direction such that the movable part is capable of swinging around a rotational axis which is along the long direction and (ii) which are arranged along a short direction; the farther each torsion bar is from the rotational axis, the smaller a spring constant of each torsion bar is.

Actuator with plurality of torsion bars having varying spring constant

A driving apparatus () is provided with: a first base part (); a second base part (); an elastic part () configured to couple the first base part with the second base part; a coil () disposed on the first base part; a first magnet () disposed on one side of the coil; a second magnet () disposed on an opposite side of the first magnet as viewed from the coil; a first middle yoke () provided on a surface of the first magnet opposed to the coil; and a second middle yoke () provided on a surface of the second magnet opposed to the coil. In particular, the first magnet is smaller than the second magnet. The first middle yoke is located closer to the coil than the second middle yoke is.

Driving apparatus

An actuator () has a movable portion (); a supporting portion (); and a torsion bar (), a rib () is formed on a surface of the movable portion, the movable portion has a protruding portion () which protrudes in a direction along the surface and protrudes toward an outside of the movable portion, at least one portion of the rib is formed on the surface to extend on the protruding portion.

Actuator

A recording/reproducing apparatus () is provided with: a first substrate () on which a recording medium () is mounted; and a second substrate () to which a recording/reproducing head (), which performs information recording and information reproduction on the recording/reproducing medium is fixed, wherein the second substrate is relatively displaced in a predetermined direction substantially parallel to the first substrate with respect to the first substrate, a particulate () is placed in a gap between the first substrate and the second substrate, the particulate can be displaced with displacement of the second substrate, the particulate has a substantially circular cross section in a direction that the second substrate is displaced when the second substrate is displaced.

Recording/reproducing apparatus

A driving apparatus () is provided with: a fixed part () having a fixed-part plane (); and a driven part () having a driven-part plane (), which faces the fixed-part plane, and driven in a direction substantially parallel to the fixed-part plane, a liquid lubricant () is between the fixed-portion plane and the driven-part plane, the driven-part plane faces the fixed-part plane such that the driven-part plane is substantially parallel to the fixed-part plane.

Driving apparatus and recording/reproducing apparatus

A first thermal buffer layer and a second thermal buffer layer are arranged between a recording medium and an actuator structure. The heat conductivity of the first thermal buffer layer is set low and the heat conductivity of the second thermal buffer layer is set high. Most of the heat generated from a coil wiring of the actuator structure is blocked by the first thermal buffer layer, and heat leaked from the first thermal buffer layer is diffused by the second thermal buffer layer. Temperature distribution on the recording medium is made uniform, and thus, a configuration wherein the recording medium and the actuator structure are placed one over another can be provided, information reading accuracy or information recording stability can be improved and the sizes of an information storage device can be reduced.

Growing community of inventors

Kanagawa, Japan

Kenjiro Fujimoto