Patent ID: 7860425

Claim:
A printing system comprising: a printing unit configured to execute a double-sided printing job for printing an image on a first side and a second side of a sheet; a setting unit configured to set an adjustment value for adjusting a positional relationship of the image to be printed on the first side and the image to be printed on the second side of the sheet; a control unit configured to control said printing unit to adjust the positional relationship of the image to be printed on the first side and the image to be printed on the second side of the sheet based on the adjustment value set by said setting unit when said printing unit executes a first double-sided printing job; and a selecting unit configured to select whether or not said printing unit uses the adjustment value set by said setting unit for a second double-sided printing job which is executed after said printing unit executes the first double-sided printing job, wherein, if said selecting unit selects to use the adjustment value for the second double-sided printing job, said control unit controls said printing unit to adjust the positional relationship of the image to be printed on the first side and the image to be printed on the second side of the sheet based on the adjustment value set by said setting unit when said printing unit executes the second double-sided printing job, wherein said setting unit sets the adjustment value after said printing unit prints images on a number of pages from the first double-sided printing job, and, if the adjustment value is set by said setting unit, said control unit controls said printing unit to adjust the positional relationship of the image to be printed on the first side and the image to be printed on the second side of the sheet based on the adjustment value set by said setting unit and to print the image again from the image for the first page of the first double-sided printing job.