Patent ID: 8625174

Claim:
An automatic document feeder comprising: a transport path member that includes a transport path surface constituting a transport path through which an original document is transported in a feeder body, an end portion of which is rotatably supported by the feeder body, and the other end portion of which moves in a direction in which the other end portion gets away from the feeder body to open the transport path; a support member that is disposed in a wall portion on a side in the rotation shaft direction of the transport path member so as to be relatively rotatable coaxially with the transport path member and that includes a locking portion locked to a locking portion disposed in the feeder body when the transport path is opened; a regulating portion that is formed in the support member and that regulates the relative rotation of the other end portion of the transport path member in a direction in which the other end portion gets close to the feeder body by contacting a portion to be regulated disposed in the wall portion; and an impelling member of which an end is attached to the support member, of which the other end is attached to the other end portion of the transport path member, that impels the portion to be regulated in a direction in which the portion to be regulated contacts the regulating portion, that supports the other end portion of the transport path member at a first open position when the transport path is opened, and that allows the other end portion of the transport path member to move to a second open position at which the transport path is opened larger than at the first open position when a force in the direction in which the other end portion gets away from the feeder body is applied to the other end portion of the transport path member.