Patent ID: 7213988

Claim:
An image forming device for executing manual double-side printing in which a user sets a paper sheet when printing is conducted on the other side of said paper sheet after printing on one side of said paper sheet is completed, comprising: a plurality of paper feed units which feed said paper sheets; a control unit which, when the user designates a paper feed unit, instructs a printing unit to feed paper from the user-designated paper feed unit, and which, when the user designates automatic paper feed selection, instructs the printing unit to feed paper from a paper feed unit which matches with a printing job, and which, when printing on the other side of said paper sheet is carried out, instructs the printing unit to feed paper from one of said paper feed units that is preset for printing on said other side; and the printing unit which carries out the paper feed from said preset paper feed unit, according to said paper feed instruction, and executes said printing of the other side on said paper sheet that is fed.