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    • 4. 发明授权
    • Digital system for control of an electric typewriter
    • 用于电动打字机控制的数字系统
    • US4207010A
    • 1980-06-10
    • US925187
    • 1978-07-17
    • William O. Wernsing
    • William O. Wernsing
    • B41J25/02B41J29/02B41J5/30B41J23/34
    • B41J29/02B41J25/02
    • An electric typewriter of the type having individual type elements for each character has attached thereto a system for controlling the actuation of the type elements and the control functions of the typewriter by digital signals. The digital signals may emanate from a remote central processing unit or other device. The control system is an attachment to the typewriter which does not interfere with the normal manual operation of the typewriter. The control system is mounted in a housing which is placed under the typewriter in predetermined alignment with the key lever actuation means and employs an electromagnetic actuator to set a condition for a mechanical actuator for each key lever. A mechanical actuator initiates a key stroke if the electromagnetic actuator is positioned in an ON position and does not initiate a key stroke if the electromagnetic actuator is in the OFF condition. The electromagnetic actuator does not supply power for the key stroke operation but merely sets a condition for the mechanical actuator which initiates a key stroke through the typewriter key power drive to operate and print a character.
    • 具有每个字符的单独类型元件的类型的电动打字机附有用于通过数字信号来控制类型元件的致动和打字机的控制功能的系统。 数字信号可能从远程中央处理单元或其他设备发出。 控制系统是打字机的附件,不会干扰打字机的正常手动操作。 控制系统安装在壳体中,该壳体与打键机驱动装置预先对准地放置在打字机下方,并且采用电磁致动器为每个键杆设置机械致动器的状态。 如果电磁致动器位于ON位置并且如果电磁致动器处于OFF状态,则机械致动器启动键行程。 电磁执行器不为键行程操作提供电力,而仅为通过打字机键驱动器启动键行程的机械致动器设置条件以操作和打印字符。