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    • 41. 发明授权
    • Position control system for information storage system
    • 信息存储系统的位置控制系统
    • US5084661A
    • 1992-01-28
    • US107501
    • 1987-10-13
    • Shigeyoshi Tanaka
    • Shigeyoshi Tanaka
    • G11B21/10G11B7/085G11B21/08H02P8/00
    • G11B7/08517G11B21/085
    • A position control system for an information storage system, for example, an optical disc system, includes a stepping motor for moving a read-write head and a DC motor for moving a beam reflecting unit, such as an object lens mounted on the head. The position control system drives the stepping motor to compensate a positional error of the beam reflecting unit in a tracking mode after a seek without disturbing the movement of the beam reflecting unit. The position control system includes a master control unit operatively connected to a host controller, a stepping motor control unit, and a track servo control unit. The master control unit activates the stepping motor control unit for a seek operation upon receipt of a seek command from the host controller. The stepping motor control unit drives the stepping motor with a large drive current until the head moved by the stepping motor reaches a position adjacent to a target track on the recording medium. In a tracking operation, the track servo control unit drives the DC motor in response to a positional error of the head at the target track to finely control a position of the head at the target track. The stepping motor control unit drives the stepping motor by a predetermined rotation angle with a small drive circuit to compensate a position of the access end when the position of the beam reflecting unit exceeds a limit of a controllable range of the beam reflecting unit.
    • 用于信息存储系统(例如光盘系统)的位置控制系统包括用于移动读写头和用于移动诸如安装在头部上的物镜的光束反射单元的DC电机的步进电机。 位置控制系统驱动步进电机,以在寻找后以跟踪模式补偿光束反射单元的位置误差而不干扰光束反射单元的移动。 位置控制系统包括可操作地连接到主机控制器,步进电机控制单元和轨道伺服控制单元的主控制单元。 在从主机控制器接收到寻道命令时,主控制单元激活步进电机控制单元进行寻道操作。 步进电机控制单元以大的驱动电流驱动步进电机,直到由步进电机移动的磁头到达与记录介质上的目标磁道相邻的位置。 在跟踪操作中,轨道伺服控制单元响应于目标轨迹上的头部的位置误差来驱动DC电动机,以精细地控制头部在目标轨迹处的位置。 步进电机控制单元用小的驱动电路驱动步进电机预定的旋转角度,以便当光束反射单元的位置超过光束反射单元的可控范围的极限时补偿进入端的位置。
    • 42. 发明授权
    • Squeezing and chamfering device for tube end
    • 管端挤压倒角装置
    • US4827754A
    • 1989-05-09
    • US225577
    • 1988-07-28
    • Shigeyoshi Tanaka
    • Shigeyoshi Tanaka
    • B21D41/04
    • B21D41/04
    • In a squeezing and chamfering device comprising a cylindrical frame, a chuck device provided at an end of the cylindrical frame for seizing a tubular material, a driving device provided at the other end of the cylindrical frame with an output shaft thereof extended in the cylindrical frame, and a slide holder secured to an end of the output shaft to be slidable in the cylindrical frame in an axial direction thereof, a squeezing die having a tapered inner bore engageable with the tubular material is detachable secured to the slide holder, and a chamfering portion is provided at an end of the inner bore away from the chuck device.
    • 在包括圆柱形框架的挤压倒角装置中,设置在圆柱形框架的端部用于抓住管状材料的卡盘装置,设置在圆柱形框架的另一端的驱动装置,其输出轴延伸在圆柱形框架 以及固定在输出轴的端部以沿圆柱形框架的轴向可滑动的滑动架,具有可与管状材料接合的锥形内孔的挤压模具可拆卸地固定到滑动架上,并且具有倒角 部分设置在远离卡盘装置的内孔的端部。
    • 44. 发明授权
    • Liquid developer for electro photography
    • 液体显影剂电摄影
    • US4156034A
    • 1979-05-22
    • US559520
    • 1975-03-18
    • Akio MukohYasuki MoriHirosada MorishitaNobuhiko ShitoShigeyoshi Tanaka
    • Akio MukohYasuki MoriHirosada MorishitaNobuhiko ShitoShigeyoshi Tanaka
    • G03G9/13G03G9/16
    • G03G9/131Y10S526/934
    • A liquid developer for electro photography which comprises a coloring agent, a coating agent, a resistivity controlling agent and a carrier liquid which disperses or dissolves the said three agents is suitable for providing high reproducibility of images when at least one of the following copolymers are used as said coating agent:(a) Copolymer of an acrylic acid compound represented by the following general formula (i) and a para-alkylstyrene represented by the following general formula (ii): ##STR1## (WHEREIN R.sub.1 is hydrogen or an alkyl group of 1-6 carbon atoms and R.sub.2 is hydrogen or C.sub.m H.sub.p X.sub.q wherein m=1-6 and p+q=2m+1 or p+q=m-1 and X is a halogen, amino group, secondary or tertiary amino group having an alkyl group of 1-4 carbon atoms, nitro group, cyano group or hydroxyl group) ##STR2## (WHEREIN R.sub.3 is an alkyl group of 2-18 carbon atoms). (B) Copolymer obtained by polymerizing at least one member selected from the para-alkylstyrene represented by said general formula (ii), other polymerizable vinyl monomer and a polymerizable polymer and at least one member selected from an acrylic acid compound having an ether bond and represented by the following general formula (iii): ##STR3## (WHEREIN R.sub.4 is hydrogen or an alkyl group of 1-6 carbon atoms and R.sub.5 is ##STR4## C.sub.l H.sub.2l+l wherein Y is hydrogen or hydroxyl group, m is 1-6, n is 1-30 and l is 0-18) and(c) Copolymer obtained by polymerizing at least one acrylic acid compounds selected from those of said general formulas (i) and (iii), the para-alkylstyrene represented by the general formula (ii) and an acrylic acid compound represented by the following general formula (iv): ##STR5## (WHEREIN R.sub.6 is hydrogen or an alkyl group of 1-6 carbon atoms and R.sub.7 is an alkyl group of 1-18 carbon atoms).
    • 用于电摄影的液体显影剂包括着色剂,涂层剂,电阻率控制剂和分散或溶解所述三种试剂的载体液体,当使用至少一种以下共聚物时,适于提供高的图像再现性 作为所述涂布剂:
    • 45. 发明授权
    • Water-dispersible epoxy modified alkyd resins
    • 水分散性环氧改性醇酸树脂
    • US4154709A
    • 1979-05-15
    • US883706
    • 1978-03-06
    • Ryoji UkitaAsao IsobeTakao HirayamaShigeyoshi Tanaka
    • Ryoji UkitaAsao IsobeTakao HirayamaShigeyoshi Tanaka
    • C08G63/66C09D167/08C09D3/64C09D3/66C09D5/02
    • C08G63/66C09D167/08
    • A water-dispersible epoxy modified alkyd resin produced by reacting (A) 0-50 parts by weight of oil or oil fatty acid, (B) 10-50 parts by weight of polyhydric alcohol, (C) 0-25 parts by weight of monobasic acid having 6 to 18 carbon atoms, (D) 15-70 parts by weight of polybasic acid having 4 to 10 carbon atoms or its anhydride, (E) 5-25 parts by weight of polyoxyalkylene glycol having a molecular weight of 600 to 20,000, and (F) an epoxy compound, wherein the ratio of the hydroxyl groups to the carboxyl groups in the components (A) through (E) is 0.625-1.8 and the amount of the component (F) is 3-50 parts by weight per 100 parts by weight of the total weight of the components (A) through (E), can provide water-dispersible coatings having improved drying characteristics and water resistance as well as corrosion resistance.
    • (A)0-50重量份的油或油脂肪酸,(B)10-50重量份的多元醇,(C)0-25重量份的 具有6至18个碳原子的一元酸,(D)15-70重量份的具有4至10个碳原子的多元酸或其酸酐,(E)5-25重量份的分子量为600至100的聚氧化亚烷基二醇 20,000和(F)环氧化合物,其中组分(A)至(E)中羟基与羧基的比例为0.625-1.8,组分(F)的量为3-50份, (A)至(E)中每100重量份的重量,可以提供具有改进的干燥特性和耐水性以及耐腐蚀性的水分散性涂料。