Ricoh Company, Ltd.

Nippon Hoso' Kyokai

Chotaro Engineering, Co.

Asahi Kogaku Kogyo Kabushiki Kaisha

Haruki Tokumaru

Nobuaki Onagi

Yoshimichi Takano

Daiichi Koide

Yasutomo Aman

Minoru Takahashi

Masami Nishida

Takeshi Kajiyama

Koichi Maruyama

Shozo Murata

Kohji Tsukahara

Yasunori Sugimoto

Syunitirou Wakamiya

Koide Daiichi

Kajiyama Takeshi

Nishida Masami

Takano Yoshimichi

A disk laminate includes thin disks laminated to each other, which are to be suctioned and conveyed; and spacers provided between the thin disks to prevent the thin disks from directly contacting each other, the spacers having air permeability.

Disk laminate, disk cartridge, disk loading/unloading mechanism, disk conveying device, disk conveying mechanism, and thin disk driving system

A disclosed disk clamping mechanism includes a turntable fixed on a rotational shaft of a spindle motor to rotate a flexible thin optical disk, a stabilizer member configured to suppress a run-out of the flexible thin optical disk by an applying aerodynamic force to the rotating flexible thin optical disk so as to stabilize the run-out of the rotating flexible thin optical disk, and a clamper movably supported in a center of the stabilizer member in a direction perpendicular to a surface of the flexible thin optical disk. In the disclosed disk clamping mechanism, the flexible thin optical disk is sandwiched between the turntable and the clamper such that the turntable and the clamper rotate the flexible thin optical member sandwiched in-between.

Disk clamping mechanism and disk drive system, with movably supported clamper

A disk rotating device includes a flexible disk in which information is recordable, a turntable on which the disk is held, a spindle that rotates the disk held on the turntable, and a stabilizer that stabilizes the rotating disk. In the disk rotating device, a rotation transmitting device transmits the rotation of the spindle to the disk via the turntable, and a disk holding device holds the disk so that the disk is elastically deformable from a center of the rotation of the disk in a radial direction of the disk.

Disk rotating device, disk, disk assembly, disk cartridge, and recording and reproducing device

A data recording/reproduction method for performing a data recording/reproduction process on a flexible optical disk by rotating the flexible optical disk while controlling an axial runout of the flexible optical disk with a stabilizing member that applies an aerodynamic force to the flexible optical disk, and irradiating an optical beam and focusing the optical beam to the flexible optical disk is disclosed that includes the steps of a) generating a first axial runout, b) generating a focus error signal forming an S-curve when the first axial runout is generated, c) determining a position of the optical beam according to the focus error signal, d) generating a second axial runout that is smaller than the first axial runout after step c), and e) conducting at least one of the data recording process and the data reproduction process after step d).

Data recording/reproduction method and data recording/reproduction apparatus

A recording/reproducing apparatus is disclosed that includes a spindle motor unit including a spindle on which a flexible recording disk is placed, a stabilizer plate disposed so as to face the recording disk, a torque detection unit configured to detect a drive torque applied to the spindle motor unit, an adjustment unit configured to adjust a gap between the recording disk and the stabilizer plate, and a determination unit configured to determine an optimal gap to be set to the gap based on the drive torque detected by the torque detection unit, in which the adjustment unit sets the optimum gap determined by the determination unit to the gap.

Optimum gap determined recording/reproducing apparatus

Optimum gap determined recording/reproducing apparatus and method

An optical recording and reproducing apparatus is provided with a light source that emits a beam of light, a rotatable head including a deflector that deflects the beam in a predetermined direction and an objective lens group which forms an image of the beam on an optical recording medium. The rotatable head rotates about an optical axis of the beam which is incident upon the rotatable head. A movable lens group, provided in an optical path of the beam between the light source and the rotatable head, is movable in at least an optical axis direction.

Optical medium recording apparatus with a rotatable optical beam

Growing community of inventors

Tokyo, Japan

Haruki Tokumaru