Image forming apparatus

An image forming apparatus comprising:

• an image forming portion configured to form an image on a sheet;
• a tray provided on a main assembly accommodating the image forming portion and including a stacking surface on which the sheet is stacked;
• a feeding portion configured to feed the sheet stacked on the stacking surface toward the image forming portion;
• a side end regulate portion configured to regulate a side end of the sheet stacked on the stacking surface with respect to a sheet widthwise direction perpendicular to a sheet feeding direction;
• and
• a blowing fan mounted on the tray and configured to generate air blown to the side end of the sheet with respect to the sheet widthwise direction,
• wherein the blowing fan is disposed on an opposite side to a side where the sheet is stacked on the stacking surface so that at least a part of the blowing fan with respect to the sheet widthwise direction is overlapped with the stacking surface with respect to the sheet widthwise direction, and
• wherein the blowing fan moves with the side end regulate portion in the sheet widthwise direction.