Patent ID: 7389981
Filing Date: 2008-06-24
Classification: B65H

Abstract:
1. A paper feeding apparatus of a printer, the paper feeding apparatus comprises: a paper cassette being detachably coupled to a main body of a printer to store sheets of paper; a knock-up plate being installed on the paper cassette to push upwardly on the sheets of paper on an upper portion thereof a pick-up roller to convey the paper loaded on the knock-up plate to a printing path; a paper guide having a slanted surface to guide the sheets of paper conveyed by the pick-up roller and an air chamber arranged thereon; a finger unit configured to press a front edge portion of the sheets of paper picked up by the pick-up roller for generating a curl; and a ventilation device to form an air gap under the picked up sheets of paper by injecting air in the air chamber toward the front edge portion of the paper so that the sheets of paper are curled by the finger unit through a ventilation path located on the slanted surface of the paper guide, wherein the ventilation device includes a fan having an outlet connected to the air chamber, the fan is integrally installed with the paper cassette, and the fan includes an inlet to intake external air, and the ventilation device further includes a first pipe extending from the inlet toward a fusing device, and a second pipe extending from the fusing device on the main body of the printer to connect to the first pipe in the paper cassette.