Patent ID: 9738471
Date: 2017-08-22
CPC Classifications: B65H,G03G,H04N

Claim:
1. An automatic document feeder, comprising: a housing openably and closably attached to a main body of an image forming apparatus; a conveyance roller pair configured to pinch an original document sheet with pressure and feed the original document sheet; a pressure releasing mechanism configured to reduce a pinching pressure of the conveyance roller pair or detach one roller of the conveyance roller pair from the other roller in conjunction with an operation of opening the housing against the main body; and a hinge portion openably and closably connecting the housing to the main body, wherein the pressure releasing mechanism includes an axis moving member that is slidably supported inside the housing and has an elongated hole formed therein for guiding an axis of one roller of the conveyance roller pair, and the axis moving member slides in conjunction with an operation of the hinge portion, in opening the housing against the main body, to reduce the pinching pressure of the conveyance roller pair, or detach one roller of the conveyance roller pair from the other roller.