A printing apparatus for a linerless printing sheet comprising: a printing device (2) for forming ink information on an upper surface of the linerless printing sheet (1) including a print backing material (11) having a back surface provided with an adhesive layer (12); and a transporting means for unwinding and transporting the sheet from a roll (13) of the sheet; the printing device forming the ink information while the transportation is transporting the sheet; wherein the transporting means transports the sheet while keeping contact with the adhesive layer, and at least has its outer surface formed of a silicone rubber containing a silicone oil.
