Patent ID: 8387968

Claim:
A recording-material-feeding device comprising: a stacking portion that holds a stack of recording materials; a lifting member that moves the stacking portion up and down between a feeding position at which a recording material is fed and a refilling position at which refill recording materials are supplied; a suction member that draws one or more recording materials by suction with a negative pressure; a negative-pressure-generating member that generates the negative pressure in the suction member; and a stopping member that stops an edge of the stack of recording materials on the stacking portion and includes a sealing member that that is movably connected to a base of the stopping member so as to be able to move up and down, the sealing member is configured to maintain the level of the negative pressure in the suction member, wherein the sealing member of the stopping member is movable up and down between a retracted position at which refill recording materials are supplied and a sealing position at which the level of the negative pressure in the suction member is maintained, the sealing member moving with the up-and-down movement of the stacking portion.