Patent ID: 8360425

Claim:
A depinching mechanism, for paper jam removal in printer, comprising: a frame; a star wheel assembly, disposed in the printer and located upon the frame; a limiter arm, pivoted on the frame and located below the star wheel assembly, wherein the limiter arm is kept horizontal by its own weight until being rotated; a rocker arm, located below the limiter arm and one end rotatably fixed on the frame and another end freely contacts the limiter arm; a lifting device, disposed on the frame and located between the star wheel assembly and the rocker arm, wherein the lifting device gets into a working status from an idle status as soon as the rocker arm engages with the lifting device, in the working status the lifting device lifts the star wheel assembly from a first position to a second position, and lowers the star wheel assembly from the second position to the first position, in the idle status the lifting device stays motionless; and a sensor, disposed on the frame and located between the star wheel assembly and the limiter arm, wherein the sensor is adapted to detect the position of the star wheel assembly; wherein the rocker arm and the lifting device are disengaged as long as the limiter arm is not rotated, and once the limiter arm is triggered to rotate, the rocker arm engages with the lifting device to transmit a torque to the lifting device to drive the lifting device to be in the working status, otherwise the limiter arm is kept horizontal and prevents the rocker arm to engage with the lifting device; wherein the lifting device comprises: a housing, fixed on the frame; a gear-cam, rotatably fixed on the housing; and a plunger, movably disposed on the frame and located between the gear-cam and the star wheel assembly with one end freely attached to the gear-cam and another end freely attached to the star wheel assembly.