Sheet feeding device, image reading device and image forming apparatus

A sheet feeding device comprising:

• a first supporting portion configured to support a sheet;
• a first regulating unit movably provided to the first supporting portion with respect to a sheet widthwise direction perpendicular to a sheet feeding direction and configured to regulate a position of the sheet, supported by the first supporting portion, with respect to the sheet widthwise direction;
• a second supporting portion provided above the first supporting portion and configured to be capable of supporting a sheet, of which a length in the sheet widthwise direction is shorter than that of the sheet supported by the first supporting portion, in a state in which the first supporting portion supports the sheet;
• a second regulating unit movably provided to the second supporting portion with respect to the sheet widthwise direction and configured to regulate a position of the sheet, supported by the second supporting portion, with respect to the sheet widthwise direction;
• and
• a feeding member configured to feed the sheet supported by the first supporting portion and the sheet supported by the second supporting portion with respect to the sheet feeding direction,
• wherein as viewed in the sheet feeding direction, the second regulating unit is disposed so that at least a part of the second regulating unit is overlapped with the first regulating unit.