US Patent 7643171 Print controller, printer, and program

A print controller for controlling an image print unit to print an index image on a recording medium to be used for separation when a printed record medium is recycled, includes: an output unit that outputs image data representing an image to be printed on the record medium to the image print unit; and an index unit that determines the index image to be printed on the record medium together with the image by the image print unit based on a printing condition.