Patent 7420693 was granted and assigned to Samsung on September, 2008 by the United States Patent and Trademark Office.
A paper cartridge of a printer including a cartridge body to load papers to be picked up, and a friction plate to provide a predetermined friction force to a front end of the papers picked up at the cartridge body. The friction plate is sloped at a predetermined angle in the body so that the friction plate can be moved by being pushed by the front end of the paper.