MOVABLE UNIT FOR SCANNER, SCANNER AND IMAGE FORMING APPARATUS INCLUDING THE SAME

摘要

PURPOSE: A moving unit for a scanner, the scanner including the same and an image forming apparatus for preventing the tilt of a mobile object are provided to increase the quality of a scanning image and the quality of print by reducing tilting of the mobile object. CONSTITUTION: A first pinion(220) is installed in a unit frame(210) in order to move according to a first rack. A second rack is formed in the first side and the other second side of a guide member. A second pinion is installed in the unit frame and revolves the second rack at the primary pinion. The primary pinion and the second pinion have the same pitch. The rotation moment about the second pinion is the same size.