Patent ID: 6366343
Filing Date: 2002-04-02
Classification: G03B,H04N

Abstract:
A scanning apparatus having two transmission systems, wherein the scanning apparatus comprising:a motor; a first transmission gear-wheel and a second transmission gear-wheel, wherein the first transmission gear-wheel and the second transmission gear-wheel are respectively transmitted by the motor; a relatively high gear-change rate transmission gear-wheel in conjunction with the first transmission gear-wheel; a relatively low gear-change rate transmission gear-wheel in conjunction with the second transmission gear-wheel; a first one-way clutch disposed inside the relatively high gear-change rate transmission gear-wheel to control the relatively high gear-change rate transmission gear-wheel to rotate in a first direction; a second one-way clutch disposed inside the relatively low gear-change rate transmission gear-wheel to control the relatively low gear-change rate transmission gear-wheel to rotate in a second direction; and a carriage, wherein the carriage is transmitted by the relatively high gear-change rate transmission gear-wheel through a first transmission belt to move forward and also the carriage is transmitted by the relatively low gear-change rate transmission gear-wheel through a second transmission belt to move backward.