Patent ID: 7600748

Claim:
A sheet feeding device comprising: a sheet mounting tray that holds sheets; a chamber that has an opening formed therein and that generates a negative pressure thereinside; a suction belt that suctions a first sheet from the sheets and conveys the first sheet and that is configured to be rotatable along with the chamber and deformable into a concave shape along with the opening; a regulating member that is disposed inside the opening to regulate a concaving amount of the suction belt; a sheet gate that is disposed in a sheet feeding passage so as to be opposed to the suction belt and that is configured to retreat when contacted by the suction belt; and a nozzle that includes: first blowing ports that are disposed in both end portions with respect to the suction belt to blow air toward the sheets; and a second blowing port that is disposed in a central portion with respect to the suction belt to blow air toward the suction belt.