Patent ID: 7792461
Filing Date: 2010-09-07
Classification: G03G

Abstract:
1. A unit drawing mechanism, comprising: a drawing unit movable along a movement path between a retracted position in an apparatus and an exposed position outside the apparatus; a lever supported pivotably on the front side of the drawing unit; a fixture for locking the drawing unit in the retracted position; a preventer for preventing the drawing unit from moving from the exposed position; a linkage linking the lever to the fixture and the preventer; and a lever holder for holding the lever in a first angular position, a second angular position, and a third angular position when the drawing unit is locked by the fixture, positioned on the movement path, and prevented by the preventer from moving from the exposed position, respectively, wherein the linkage transmits to the fixture the turning force created by the lever pivoting from the first angular position to the second angular position and the turning force created by the lever pivoting from the second angular position to the first angular position, and the linkage transmits to the preventer the turning force created by the lever pivoting from the second angular position to the third angular position and the turning force created by the lever pivoting from the third angular position to the second angular position, and wherein, when the drawing unit is in the retracted position, the fixture locks the drawing unit in the retracted position by utilizing the turning force created by the lever pivoting from the second angular position to the first angular position, and the fixture releases the drawing unit by utilizing the turning force created by the lever pivoting from the first angular position to the second angular position.