Patent ID: 7576875
Filing Date: 2009-08-18
Classification: B65H,G06F,G06K

Abstract:
1. A printer control unit for issuing a command to a printer which suspends the advancement of a printing medium, which is being fed by the rotation of a feeding roller, by a registering roller located forward of said printing medium, comprising: mode designation receiving means for receiving the designation of double-side printing mode in which both surfaces of the printing medium are target surfaces to be printed; command generating means for generating a command, upon receipt of the designation of said double-side printing mode by said mode designation receiving means, for rotating said registering roller in the direction to move said printing medium backward before restart of advancement and rotating said feeding roller in the direction to move said printing medium forward synchronizing with the rotation of said registering roller in order to feed said printing medium for printing a second image that is to be printed later out of a pair of images to be printed on both surfaces of said printing medium; and command issuing means for issuing said command generated by said command generating means as said command to be supplied to said printer.