Sheet feeding apparatus and image reading apparatus

The sheet feeding apparatus comprising:

• a liftable stacking member on which a sheet is stacked;
• a feeding member which feeds the sheet in abutment against the uppermost one of the sheets placed on the stacking member, wherein the feeding member moves from a separation position, at which the feeding member is separated from the uppermost one of the sheets placed on the stacking member, to an abutment position at which the feeding member abuts against the uppermost one of the sheets placed on the stacking member, and after the feeding member feed the uppermost one of the sheets placed on the stacking member, the feeding member moves from the abutment position to the separation position;
• a driving portion which lifts the stacking member;
• a sensor which generates a signal indicating the uppermost one of the sheets that the feeding member abuts against is below a predetermined position;
• and
• a control portion configured to control the driving portion so as to lift the stacking member when the signal is received in sequence a plurality of times, which the control portion receives from the sensor due to the feeding member moving from the separation position to the abutment position repeatedly, indicate that the uppermost one of the sheets placed on the stacking member is located below a predetermined position.