Patent ID: 7411695
Filing Date: 2008-08-12
Classification: G03G,H04N

Abstract:
1. An original cover of an image reading apparatus, comprising: a cover member for covering an original placed on an original stand; a hinge member having one end thereof pivotally supporting a rotary shaft on said cover member and having the other end thereof mounted on and pivotally supported by said original stand; and one torsion spring having a coil body and arms, said coil body configured and positioned to bias said cover member in a direction parallel to said rotary shaft to eliminate the play between said hinge member and said cover member in the direction parallel to said rotary shaft, thereby making constant the axial positional relation between said hinge member and said cover member and said arms configured and positioned to bias said cover member in a direction in which said cover member is opened with respect to said hinge member.