US 7,320,462 B2
Automatic document transportation device
Naritoshi Takamatsu, Nara (Japan)
Assigned to Murata Kikai Kabushiki Kaisha, Kyoto (Japan)
Filed on Oct. 18, 2004, as Appl. No. 10/967,825.
Claims priority of application No. 2003-364209 (JP), filed on Oct. 24, 2003.
Prior Publication US 2005/0087920 A1, Apr. 28, 2005
Int. Cl. B65H 5/22 (2006.01)
U.S. Cl. 271—3.14  [271/4.1; 271/10.11; 271/117; 399/380] 12 Claims
OG exemplary drawing
 
4. An automatic document transportation device, comprising:
a shutter which is provided upstream of a document feed roller and suspended from a cover under a freely swinging state;
a stopper which is provided on a pickup arm that stops the swing of the shutter so that the shutter restricts a position of a leading edge of an original document when the pickup arm is under a standby state, and releases the stop of the shutter when the pickup arm operates in a direction to make contact with the original document;
a shutter releasing mechanism which includes a shaft having a protrusion, wherein
the protrusion gushes the pickup arm under the standby state in the direction to make contact with the original document when the shaft rotates; and
an operation knob for rotating the shaft.