Patents Assigned to Chotaro Engineering, Co.
  • Patent number: 8607259
    Abstract: 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.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: December 10, 2013
    Assignees: Ricoh Company, Ltd., Chotaro Engineering, Co.
    Inventors: Yoshimichi Takano, Nobuaki Onagi, Kohji Tsukahara, Haruki Tokumaru, Daiichi Koide, Takeshi Kajiyama, Masami Nishida
  • Patent number: 8549547
    Abstract: 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.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: October 1, 2013
    Assignees: Ricoh Company, Ltd., Chotaro Engineering Co.
    Inventors: Nobuaki Onagi, Yasutomo Aman, Haruki Tokumaru, Yoshimichi Takano, Daiichi Koide, Takeshi Kajiyama, Masami Nishida
  • Patent number: 7885149
    Abstract: A disk carrier device for carrying an optical disk having a plate in the center, which plate is capable of being attracted by a magnetic force, is disclosed. The disclosed disk carrier device includes an attracting unit including a permanent magnet that attracts and thereby holds the plate; and a holding mechanism configured to detachably hold the attracting unit.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: February 8, 2011
    Assignees: Ricoh Company, Ltd., Chotaro Engineering Co.
    Inventor: Nobuaki Onagi
  • Patent number: 7823172
    Abstract: A disk apparatus includes a head configured to move along a recording surface of a rotating disk; and a stabilizing member provided so as to face the disk. A facing surface of the stabilizing member facing the disk includes a curved surface whose symmetrical axis is a center generating line passing through a center of the facing surface. The head reciprocally moves along a path which is offset from the center generating line.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: October 26, 2010
    Assignees: Ricoh Company, Ltd., Chotaro Engineering, Co.
    Inventors: Yasutomo Aman, Masami Nishida