Patent ID: 6598870
Filing Date: 2003-07-29
Classification: G03G,H04N

Abstract:
A document conveying apparatus, comprising a document conveying passage and a pair of document introduction rollers disposed at a document insertion portion on said document conveying passage, wherein:said document conveying apparatus further comprises a support frame body disposed on the upper side of said document conveying passage and a cover frame supported pivotably by said support frame body; said pair of document introduction rollers are constituted by a driven roller disposed on the lower side of said document conveying passage and a follower roller supported by said cover frame, said cover frame is allowed to turn selectively between a closed position where said follower roller is brought into pressed contact with said driven roller and an open position where said follower roller is located at an upper position away from said driven roller, a shutter member is supported on the downstream side of said pair of document introduction rollers to freely move up and down between a shut-off position where said shutter member shuts off said document conveying passage so that the leading end of a document inserted in said document conveying passage from said document insertion portion comes in contact therewith and is positioned and an open position where said shutter member retracts upward from said document conveying passage to permit the movement of said document, and said cover frame and said shutter member are interlocked to each other so that said shutter member is moved up to said open position when said cover frame is turned to the closed position and so that said shutter member is moved down to said shut-off position when said cover frame is turned to the open position; and wherein a cam means capable of moving up and down said shutter member is disposed in said cover frame, an elastic member is disposed between said support frame body and said shutter member to urge said shutter member toward the open position and when said cover frame is brought to said open position, said shutter member is brought to the shut-off position by the action of said cam means against the resilient member and when said cover frame is brought to the closed position, said shutter member is brought to the open position by said elastic member as it is no longer acted upon by said cam means.