Sheet feeding apparatus and image forming apparatus

A sheet feeding apparatus comprising:

• a first tray configured to store sheets;
• a sheet feeder configured to feed sheets stored on the first tray;
• a second tray configured to store sheets, to be supplied to the first tray;
• a sheet sensor configured to detect presence or absence of a sheet on the second tray;
• a sheet mover configured to move the sheets stored on the second tray, wherein the sheet mover is movable between a first position for storing sheets on the second tray and a second position for supplying the sheets stored on the second tray to the first tray;
• a first position sensor configured to detect the sheet mover located at the first position;
• an abnormality detector configured to detect an abnormality in the sheet mover, wherein, in a case where the sheet sensor detects sheets while the first position sensor does not detect the sheet mover located at the first position, the abnormality detector determines that the sheet mover has an abnormality;
• and
• a controller configured to control, in a case where the abnormality detector detects an abnormality in the sheet mover, to inhibit the sheet mover from operating and to permit the sheet feeder to feed a sheet.

An image forming apparatus comprising:

• a first tray configured to store sheets;
• a sheet feeder configured to feed sheets stored on the first tray;
• a first sheet sensor configured to detect presence or absence of a sheet on the first tray;
• an image forming unit configured to form an image on a sheet fed by the sheet feeder;
• a second tray configured to store sheets, to be supplied to the first tray, wherein the second tray is disposed adjacently to the first tray;
• a sheet mover configured to move the sheets stored on the second tray, wherein the sheet mover is movable between a first position for storing sheets on the second tray and a second position for supplying the sheets stored on the second tray to the first tray;
• an abnormality detector configured to detect an abnormality in the sheet mover;
• and
• a controller configured to control,
• in a case where the abnormality detector detects an abnormality in the sheet mover, to inhibit the sheet mover from operating, and
• in a case where the first sheet sensor detects a sheet after the abnormality detector detects the abnormality, to permit the sheet feeder to feed a sheet and permit the image forming unit to form an image.