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    • 112. 发明授权
    • Stencil sheet
    • 蜡纸
    • US06357347B1
    • 2002-03-19
    • US09599744
    • 2000-06-23
    • Kenji Yoshida
    • Kenji Yoshida
    • B41N124
    • B41N1/245B41N1/24Y10T428/24802
    • Stencil sheets which are inhibited from extension when printing of a large number of copies and from getting creases so that originals can be faithfully reproduced and sharp prints can be obtained are described. A stencil sheet can include a laminate of a thermoplastic resin film and a porous support mainly compose of synthetic fibers, and have a wet tensile strength in the longitudinal direction of 200 gf/cm or more, preferably 300 gf/cm or more and a breaking strength under shear in the longitudinal direction of 400 gf/cm2 or more, preferably 600 gf/cm2 or more. The thermoplastic resin film can have a thickness of 0.1-10 &mgr;m.
    • 描述了当打印大量副本并且获得折痕时可以阻止延伸的蜡纸,以便可以忠实地再现原稿并且可以获得清晰的打印。 蜡纸可以包括主要由合成纤维构成的热塑性树脂膜和多孔载体的层压体,并且纵向的湿拉伸强度在200gf / cm以上,优选为300gf / cm以上,断裂 长度方向的剪切强度为400gf / cm 2以上,优选为600gf / cm 2以上。 热塑性树脂膜的厚度可以为0.1-10μm。
    • 115. 发明授权
    • Method for driving stepping motor of multiphase hybrid type
    • 多相混合型步进电机驱动方法
    • US5726510A
    • 1998-03-10
    • US798788
    • 1997-02-12
    • Noriyuki YoshimuraKenji Yoshida
    • Noriyuki YoshimuraKenji Yoshida
    • H02K37/14H02K37/18H02K37/04
    • H02K37/18
    • A hybrid type stepping motor in which torque variation is reduced to as low as possible, torque stiffness is improved, and resonant vibration during the rotating movement is minimized. Each fixed magnetic pole has at least two small teeth arranged at intervals of the same pitch as the teeth of a rotor. The total number (NS) of the small teeth of a stator segment of an asymmetrical form is determined by NS=5.times.(n0+n1), wherein n0 is the number of the small teeth on each of five of the ten fixed magnetic poles and n1 is the number of the small teeth on each of the remaining five fixed magnetic poles. The fixed magnetic poles with the n1 small teeth are arranged alternately with the fixed magnetic poles with the n0 small teeth. The n1 small teeth poles and the n0 small teeth poles are disposed opposite to each other about the axis of a rotary shaft. The relation between the total number (NR) of the teeth of the rotor and the total number (NS) of the small teeth of the stator segment is expressed by NS.gtoreq.0.8NR (NS being greater than or equal to 0.8NR). A difference between NR and NS is calculated from NR-NS=K(S0-S1)+10(S1-1+B) where K is an integer from 2 to 5, S0 and S1 are smallest possible integers or may be equal, and B is a fraction of 1 so that 10B is always an integer. Ten windings on their respective fixed magnetic poles are energized by a power supplying means to produce desired numbers of N and S poles. The full step angle is equal to an electric angle 90.degree.=aH=360.degree./10NR and thus, the half step angle is an electric angle 45.degree.=aH=360.degree./20NR. In magnetization, the energization of the ten windings at each step produces N and S poles of the same number. Also, one or more pairs of adjacent magnetic poles are polarized to S of each step.
    • 一种混合型步进电动机,其中转矩变化减小到尽可能低的转矩刚度,并且旋转运动期间的共振振动最小化。 每个固定磁极具有至少两个以与转子的齿相同的间距排列的小齿。 非对称形式的定子段的小齿的总数(NS)由NS = 5x(n0 + n1)确定,其中n0是十个固定磁极中的五个中的每一个上的小齿数, n1是剩下的五个固定磁极中的每一个上的小齿数。 具有n1小齿的固定磁极与n0个小齿的固定磁极交替排列。 n1个小齿极和n0个小齿极绕旋转轴的轴线相对配置。 转子齿数与定子段的小齿数的总数(NS)之间的关系由NS> / = 0.8NR(NS大于或等于0.8NR)表示, 。 从NR-NS = K(S0-S1)+10(S1-1 + B)计算NR和NS之间的差异,其中K是从2到5的整数,S0和S1是可能的最小整数,或者可以相等, 而B是1的分数,所以10B总是一个整数。 其各自的固定磁极上的十个绕组由供电装置通电以产生所需数量的N极和S极。 全角度等于电角度90°= aH = 360°/ 10NR,因此半步角为电角度45°= aH = 360°/ 20NR。 在磁化中,在每个步骤中十个绕组的通电产生相同数量的N和S极。 此外,一对或多对相邻的磁极被极化到每个步骤的S。