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1. 发明专利

JPS59103774A Driving method for platen in electric typewriter 失效
标题翻译：电动型电动机的驱动方法
公开(公告)号：JPS59103774A
公开(公告)日：1984-06-15
申请号：JP21372282
申请日：1982-12-06
申请人： Nippon Typewriter Kk
发明人： INOSE TOSHIHARU
IPC分类号： B41J11/02 , B41J11/42 , B41J13/22 , B41J19/78
CPC分类号： B41J19/78
摘要： PURPOSE:To enable to efficiently drive a platen, by a method wherein a semi- circular disk form shutter plate is fixed to a platen shaft, a platen is rotated in a fixed direction when light from a photo sensor is not interrupted, and the platen is rotated in the reverse direction when the light is interrupted. CONSTITUTION:The semi-circular disk form shutter plate 9 is provided as one body with the shaft 3 so that the position where one-side edges 10 of the plate 9 reaches the photo sensor 5 from a fixed direction to interrupt the light corresponds to the condition wherein a position A' to be a reference of the platen 2 reaches a normal reference position A. In the condition wherein the light from the sensor 5 is not interrupted by the shutter plate 9, the platen 2 is rotated clockwise by a pulse motor 1, while in the condition wherein the light is interrupted, the platen is rotated counterclockwise. Accordingly, the platen can be located at the normal reference position by rotating it by an amount of not larger than about one half rotation, and the platen can be efficiently driven.
摘要翻译：目的：为了有效地驱动压盘，通过半圆盘形挡板固定在压板轴上的方法，当来自光传感器的光不被中断时，压板沿固定方向旋转，并且压板当光被中断时沿相反方向旋转。构成：半圆盘形挡板9与轴3一体设置，使得板9的一侧边缘10从固定方向到达光传感器5的位置，以中断光对应于其中作为压板2的基准的位置A'到达正常的基准位置A.在来自传感器5的光不被挡板9中断的状态下，压板2由脉冲电机如图1所示，在光中断的状态下，台板逆时针旋转。因此，压板可以通过使其不大于大约一半的旋转量而位于正常参考位置，并且可以有效地驱动压板。

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