DOUBLE-SIDED PRINTER

PROBLEM TO BE SOLVED: To reduce the number of sheets of paper stored in a storage section and to appropriately convey in and out the sheets of paper to/from the storage section.SOLUTION: A double-sided printer includes: a first stencil printing section 3 configured to print one side of a sheet of paper P; a storage section 4 configured such that by gripping the ends of sheets of paper P the one side of each of which has been printed by the first stencil printing section 3, the sheets of paper P are stored in a state that the sheets of paper are stacked with predetermine intervals, with the number of sheets having three or more measures as the maximum number of sheets; a second stencil printing section 5 configured to print the other side of paper P stored by the storage section 4; a first conveyance section 7 configured to reverse the front and the back of each paper P one side of which has been printed by the first stencil printing section 3, and convey the reversed paper P to the storage section 4; a second conveyance section 8 configured to successively convey the sheets of paper P stored in the storage section 4, to the second stencil printing section 5; and a control section configured to control the first conveyance section 7, the storage section 4, and the second conveyance section 8 so that the number of sheets of paper P stored in the storage section 4 becomes one of the three or more measures except for the maximum measure.