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    • 6. 发明申请
    • Optical Pickup Apparatus
    • 光学拾取装置
    • US20100067355A1
    • 2010-03-18
    • US12558468
    • 2009-09-11
    • Kiyotaka EizumiMinoru Sato
    • Kiyotaka EizumiMinoru Sato
    • G11B7/00
    • G11B7/0903G11B7/1353G11B2007/0006
    • An optical-pickup apparatus comprising: a laser-light source including first-and-second-light-emitting points for laser lights with first-and-second wavelengths which points are disposed at positions deviating in a direction optically corresponding to an optical-disc-tracking direction; a diffraction grating including a plurality of periodic structures which are joined to be different in phase from each other in the direction and each of which includes a recess and projection repeated in a direction optically corresponding to an optical-disc-tangential direction, the diffraction grating being configured to generate main-and-sub-luminous fluxes from the laser light; a holder to hold the diffraction grating to be movable in the direction corresponding to the tracking direction; a collimating lens; an objective lens to focus the main-and-sub-luminous fluxes from the collimating lens on the same track of an optical disc; and a photodetector to be applied with reflected lights of the main-and-sub-luminous fluxes from the optical disc, to generate main-and-sub-push-pull signals.
    • 一种光拾取装置,包括:激光光源,其包括用于具有第一和第二波长的激光的第一和第二发光点,所述激光光点位于与光盘对应的光学方向偏离的位置 追踪方向 衍射光栅,其包括多个周期性结构,其在方向上彼此相位接合,并且每个包括在与光盘切线方向光学对应的方向上重复的凹部和突起,衍射光栅 被配置为从激光产生主和次光通量; 保持器,用于保持衍射光栅能够沿与跟踪方向相对应的方向移动; 准直透镜; 将来自准直透镜的主亚光束和次光束聚焦在光盘的同一轨道上的物镜; 以及要从光盘施加主和次光通量的反射光的光电检测器,以产生主推亚信号。
    • 7. 发明申请
    • Optical Pickup Apparatus
    • 光学拾取装置
    • US20100067350A1
    • 2010-03-18
    • US12562054
    • 2009-09-17
    • Kiyotaka EizumiMinoru Sato
    • Kiyotaka EizumiMinoru Sato
    • G11B7/135
    • G11B7/0903G11B7/0912G11B7/1353G11B2007/0006
    • An optical-pickup apparatus comprising: a laser-light source; a diffraction grating including first-and-second regions of periodic structures different in phase from each other and a third region whose periodic structure is different in phase from the first-and-second regions; an objective lens focusing main-and-sub-luminous fluxes generated by the diffraction grating on the same optical-disc track; and a photodetector to receive reflected light of the main-and-sub-luminous fluxes from an optical disc and output a detection signal for generating main-and-sub-push-pull signals, a relationship between an incident light width in the objective lens corresponding to the third region and pupil diameters of the objective lens corresponding to first-and-second wavelengths of laser lights being adjusted so that a ratio of minimum value to maximum value of a differential-push-pull-signal is at substantially 50% or more and a ratio of sub-push-pull-signal level to main-push-pull-signal level is at substantially 15% or more, in both cases of the laser lights.
    • 一种光拾取装置,包括:激光光源; 衍射光栅,包括彼此相位不同的周期性结构的第一和第二区域以及周期性结构与第一和第二区域的相位不同的第三区域; 将由衍射光栅产生的主和次光束聚焦在同一光盘轨道上的物镜; 以及光电检测器,用于从光盘接收主和次光束的反射光,并输出用于产生主和次推挽信号的检测信号,物镜中的入射光宽度之间的关系 对应于对应于激光的第一和第二波长的物镜的第三区域和瞳孔直径被调节,使得差分推挽信号的最小值与最大值的比率基本上为50%,或者 在激光的两种情况下,副推挽信号电平与主推挽信号电平的比例大致为15%以上。
    • 8. 发明申请
    • RECORDING APPARATUS
    • 录音设备
    • US20090189342A1
    • 2009-07-30
    • US12360179
    • 2009-01-27
    • Yoshibumi AbeMinoru SatoZenko MotokiEihin Setsu
    • Yoshibumi AbeMinoru SatoZenko MotokiEihin Setsu
    • B65H5/06
    • B41J13/025
    • A recording apparatus including a printing unit that contacts or separates a thermal head with or from a platen using the driving force of a UD motor, one or more sheet feed units that include sheet feed rollers which are rotated forward or backward by the driving force of an LF motor transmitted through a transport gear group and pressure rollers which are supported between a pair of roller supporting members and are urged by elastic members to come into pressure contact with the sheet feed rollers, and are provided on an upstream side and a downstream side of the printing unit in a transport path of a recording sheet, a pressure release mechanism including a cam shaft that is rotatably provided so as to tilt the pair of roller supporting members of the sheet feed units against the urging force of the elastic members and separates the pressure rollers from the sheet feed rollers, and a pressure release gear group that transmits the driving force of the LF motor to the cam shaft of the pressure release mechanism, the driving force of the LF motor being transmitted to the pressure release gear group and the transport gear group.
    • 一种记录装置,包括使用UD电动机的驱动力将热敏头与压板接触或分离的打印单元,一个或多个供纸单元,其包括通过驱动力向前或向后旋转的供纸辊 通过传送齿轮组传递的LF马达和压力辊,所述压力辊支撑在一对辊支撑构件之间并被弹性构件推动以与片材进给辊压力接触,并且设置在上游侧和下游侧 所述压力释放机构包括凸轮轴,所述凸轮轴可旋转地设置成克服所述弹性构件的推动力使所述供纸单元的所述一对辊支撑构件倾斜,并分离 来自送纸辊的压辊,以及将LF电动机的驱动力传递到凸轮轴的压力释放齿轮组 压力释放机构,LF电动机的驱动力传递到压力释放齿轮组和运送齿轮组。