Patent ID: 9150031
Filing Date: 2015-10-06
Classification: B41J

Abstract:
1. A printing machine comprising: a transport unit configured to transport a sheet along a circulating route including a reversing route; a paper feeder configured to feed the sheet to the circulating route; a printer configured to perform printing on the sheet transported along the circulating route; a paper discharger configured to discharge the sheet from the circulating route; and a controller configured to control the transport unit, the paper feeder, the printer, and the paper discharger in response to a print job, such that for a sheet subject to one-side printing, the sheet is printed on one side thereof by the printer while being transported by the transport unit and then discharged by the paper discharger without entering the reversing route, and for a sheet subject to double-side printing, the paper is printed on one side thereof by the printer while being transported by the transport unit, then reversed on the reversing route, printed on the other side thereof by the printer, and then discharged by the paper discharger, and wherein the controller is further configured to, when printing a plurality of print units, each print unit including a plurality of categories of sheets having different sizes, is performed on a unit-by-unit basis, control a feed timing of each sheet by the paper feeder and a transport of the sheets by the transport unit according to a transport control pattern corresponding to a printing pattern, the printing pattern including a combination of one-side/double-side printing settings for the respective categories of sheets in each of the print units, and when the printing of the plurality of print units is consecutively performed and when a predetermined condition is satisfied, the controller is further configured to arrange an order of printing of the plurality of print units such that the print units having a same printing pattern and including sheets from at least two categories of sheets having different sizes, among the plurality of print units, are successively printed.