Sheet feeding device and image forming apparatus incorporating the same

A sheet feeding device comprising:

• a sheet feed tray detachably attached to a body of an image forming apparatus, the sheet feed tray to store a sheet;
• a conveying roller pair disposed in the body of the image forming apparatus, the conveying roller pair to convey the sheet fed from the sheet feed tray attached to the body of the image forming apparatus, the conveying roller pair includes:
• a driving roller to be rotated by a drive mechanism;
• and
• a driven roller to contact the driving roller and be rotated by the driving roller in conjunction with rotation of the driving roller;
• and
• a contact-and-separation mechanism to:
• separate the driven roller from the driving roller in conjunction with detachment of the sheet feed tray from the body of the image forming apparatus;
• and
• bring the driven roller into contact with the driving roller in conjunction with rotation of the driving roller by the drive mechanism when the sheet feed tray is detached from the body of the image forming apparatus.