Patent ID: 8485513

Claim:
A control apparatus which controls an image forming apparatus having a function of performing spine-jacketed book binding processing on a printed object, the control apparatus comprising: a first storage unit which stores first correspondence information indicative of the correspondence between information identifying printing paper sheets and basis weights of said printing paper sheets; an obtaining unit which obtains information identifying currently stored printing paper sheets, from said image forming apparatus; a reception unit which receives a selection of printing paper sheets for use in printing image data, out of said information identifying the currently stored printing paper sheets which has been obtained from said image forming apparatus by said obtaining unit, and a number of said printing paper sheets to be used for printing; an identification unit which identifies a thickness of said selected printing paper sheets, based on said first correspondence information, said selection of which having been received by said reception unit; a calculation unit which calculates a spine jacket width in performing jacketed-book binding processing on the printed object resulted from printing said image data on said printing paper sheets, based on the value resulted from multiplication of the thickness of said printing paper sheets identified by said identification unit by the number of paper sheets to be used for printing which has been received by said reception unit; and an output unit which outputs, to said image forming apparatus, a control signal including said spine jacket width calculated by said calculation unit.