Patent ID: 8240657

Claim:
A sheet feeding device, comprising: a sheet pick-up member to feed a sheet; a sheet feeding member to separate the sheet; a bottom plate which opposingly contacts the sheet pick-up member; a first biasing member to press the bottom plate against the sheet pick-up member; a friction separation member to separate overlapped sheets by friction, the friction separation member opposingly contacts the sheet feeding member; a second biasing member to press the friction separation member against the sheet feeding member; a retaining member retaining the friction separation member; a downstream guiding member on the retaining member, the downstream guiding member being arranged downstream of the retaining member in a sheet conveyance direction, the downstream guiding member including a guide surface inclined at an angle relative to a top surface of the friction separation member toward the sheet feeding member; and a sheet guiding member arranged upstream of the friction separation member in the sheet conveyance direction, wherein the sheet guiding member is between the bottom plate and the retaining member and not in contact with neither the bottom plate nor the retaining member, a line that is connected between a first apex being an apex of a guide surface of the sheet guiding member and a second apex being an apex of the guide surface of the downstream guiding member is positioned closer to the sheet feeding member than a contact portion of the sheet feeding member and the friction separation member, and the sheet guiding member is a different member from the bottom plate and the retaining member.