Printing machine having print heads and control method thereof

A printing machine comprising:

• a frame;
• a plurality of printing sections installed in the frame, each printing section having at least a print head that prints patterns on a print paper, and a mechanism to feed the print paper;
• a print data input means configured to input a many-sheet print data of the patterns to be printed on the print paper;
• a print data allocating means configured to allocate the many-sheet print data among each of the plurality of printing sections at a unit of a page;
• a fed paper delivery means configured to feed the print paper to each of the plurality of printing sections;
• and
• an ejected paper delivery means configured to feed the print paper ejected from each of the plurality of printing sections to a common output location so that each sheet of the ejected print paper printed from the many-sheet print data arrives at said common output location in a desired sequence.