Image forming apparatus for forming images with primary and secondary image data

A system including a host computer and an ink jet printer connected to each other via an interface, wherein the ink jet printer manufactures an ink jet printed product of a cloth, the system comprising:

• input means for inputting image data of a basic image;
• selection means for selecting a design pattern for repeatedly arranging the basic image;
• extraction means for extracting at least one design from the image data of the basic image;
• designation means for designating whether or not to maintain the continuity of the design extracted by said extraction means in accordance with the design pattern selected by said selection means, in a case where the ink jet printer restarts printing of the design pattern after a print operation of the design pattern by the ink jet printer has been interrupted;
• and
• print control means for controlling the ink jet printer to print the design pattern, said print control means controlling the ink jet printer to print the design pattern in accordance with a designation by said designation means, in a case where the print operation of the design pattern is restarted after the print operation has been interrupted,
• wherein the continuity of printed basic images is controlled in accordance with the designation of said designation means even if the print operation is interrupted.