| 摘要 |
The present invention is a typewriter lid actuated printing element homing device which uses a single switch for assuring that the printing element is engaged and maintained in its home position without any accompanying noise after the printing element is inserted, and also for assuring that the printing element is in its correct escapement position after the printing element is inserted. When the typewriter lid is closed, the carrier escapement position and the carrier motor phase is entered into memory. A latch member controlled by an actuator engages a notch in a flange of a rotating printing element drive gear for establishing the home position of the printing element. When the latch member engages the flange, the printing element drive gear motor is deenergized, stopping rotation of the drive gear, and the noise which would otherwise be caused by the print element drive motor continuously trying to rotate against the latch member is eliminated. The carrier is thereafter moved to its correct escapement position, which is the last print position occupied by the carrier when the lid was opened.
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