The present invention is to provide a sheet feeding apparatus to feed a sheet including a pressing member that presses and regulates one end in the width direction of sheets on a stack tray, an urging member that urges the pressing member, and an urging force changing mechanism that changes an urging force of the urging member in accordance with a sheet thickness, the urging force changing mechanism provides a pressing force in accordance with a sheet kind, so that sheets can be reliably aligned and fed in an appropriate posture.

A paper feed apparatus in accordance with the present invention feeds printing paper stored in a printing paper storage unit. The printing paper storage unit includes: a paper stacking table on which the printing paper is stacked; and an erected member erected along a side of the paper stacking table. The erected member includes a low erected portion formed lower in a height direction than a surrounding portion of the erected member. The paper stacking table has a top face thereof located at a position as high as, or higher than, the low erected portion in the height direction.

A feeding apparatus configured to feed a sheet, the feeding apparatus including: a placement unit on which the sheet is placed, the placement unit being movable in an intersecting direction intersecting with a sheet feeding direction; a feeding unit configured to feed the sheet placed on the placement unit in the sheet feeding direction; and a first guide unit and a second guide unit configured to guide the placement unit in the intersecting direction, wherein the first guide unit is disposed below the feeding unit and the second guide unit and downstream of the second guide unit in the sheet feeding direction.

With a wire wound up in a pulley portion, the wire is disposed in a pressing position extending along a tangential line common to the pulley portion and a pulley. The wire disposed in the pressing position presses a swing member against the urging force from an urging member such that the swing member approaches a sensor. With the wire completely unwound out of the pulley portion and hence with a sheet stacking tray disposed at the lowest position, the wire is disposed in a retracted position retracted from the pressing position. The wire disposed in the retracted position no longer presses the swing member and stays away from the sensor. A control portion stops a driving portion on recognizing the swing member having moved away from the sensor.