Power unit effective for jam prevention and printer with failure recovery function

摘要

An anti-stuck driving device comprises: a movable blade, a movable blade driving unit, and a controller. The movable blade driving unit comprises a transmission assembly, a motor configured to drive the transmission assembly, and a connecting element connected between the transmission assembly and the motor. The transmission assembly links the movable blade moving back and forth linearly. The controller connects to the motor. When the movable blade is stuck, the controller controls the motor to drive the connecting element to rotate in reverse to separate the transmission assembly and the connecting element, and release a resistance of the transmission assembly. The present invention also discloses a printer using the anti-stuck driving device with malfunction repairing.