Patent ID: 7614061

Claim:
A tray loading apparatus, comprising: a tray being movable between a load position and an unload position; a motor constructed and arranged for bringing the tray to move from the unload position to the load position; and a drive circuit for applying a loading voltage to the motor and the loading voltage includes at least one increasing stage; wherein at least one the increasing stage comprises at least one time interval, and the loading voltage is constant during the at least one time interval; wherein the at least one increasing stage comprises a first increasing stage and a second increasing stage, the first increasing stage includes multiple first steps and the second increasing stage includes multiple second steps, each of the first steps in the first increasing stage defines a first time interval, the loading voltage remains constant during the first time interval, each of the second steps in the second increasing stage defines a second time interval, the loading voltage remains constant during the second time interval, the first time interval is different from the second time interval.