Patent ID: 7753358

Claim:
A sheet feeding apparatus comprising: a tray which stacks and supports a sheet, the tray being lifted and lowered according to an amount of stacked sheet; a tabbed sheet support unit detachably attached in the sheet feeding apparatus and the tabbed sheet support unit stacks tabbed sheets; and a sheet feeding portion which feeds the sheet stacked on the tray or the tabbed sheets stacked on the tabbed sheet support unit when the tabbed sheet support unit is attached in the sheet feeding apparatus, wherein the tabbed sheet support unit includes: a stacking portion which is detachably attached on an upper surface that supports the sheet of the tray to stack the tabbed sheets; and a regulating portion which is provided in the stacking portion, the regulating portion abutting on a tab of the tabbed sheet on the stacking portion to regulate an end position of the tabbed sheet, on an upstream side in a sheet feeding direction, wherein the regulating portion is movably supported in a vertical direction by the stacking portion according to the amount of tabbed sheet stacked on the stacking portion, when the tabbed sheet support unit is attached on the tray.