Sheet feeding apparatus and image forming apparatus

A sheet feeding apparatus configured to feed a sheet, the apparatus comprising:

• a sheet support portion located at a side surface of the sheet feeding apparatus and configured to support a plurality of sheets;
• a feeding portion configured to feed the plurality of sheets supported on the sheet support portion one by one;
• a sheet support detection portion configured to detect that sheets are supported on the sheet support portion;
• a separation portion configured to separate the plurality of sheets supported on the sheet support portion by blowing air to the plurality of sheets;
• and
• a control portion configured to selectively execute a first mode and a second mode, the first mode being a mode in which a sheet type setting operation for the sheets supported on the sheet support portion is executed in advance, the second mode being a mode in which the sheet type setting operation is executable upon detection that the sheets are supported on the support portion by the sheet support detection portion,
• wherein in a case where a first type is set as a sheet type of the sheets in a state where the first mode is selected, the control portion starts air blowing by the separation portion upon detection that the sheets are supported on the sheet support portion by the sheet support detection portion, and
• wherein in a case where the sheet type setting operation is executed upon detection that the sheets are supported on the sheet support portion by the sheet support detection portion and the first type is set as the sheet type in a state where the second mode is selected, the control portion starts air blowing by the separation portion.