Patent ID: 6543946
Filing Date: 2003-04-08
Classification: B41J

Abstract:
A combination printer comprising:a first printing unit having a first thermal head for thermally printing on thermal paper, and a first platen which is disposed in such a manner that the first platen opposes the first thermal head and the first platen and the first thermal head can be pressed against each other; a second printing unit having a second thermal head which is positioned downstream along a paper flow path of the thermal paper relative to the first printing unit, and which transfers ink from an ink film to the thermal paper, and a second platen which is disposed in such a manner that the second platen opposes the second thermal head and the second platen and the second thermal head is able to come into contact with and come away from the second platen; a feed roller which is positioned downstream along the paper flow path of the thermal paper relative to the second printing unit; and a cutter member which is positioned downstream along the paper flow path of the thermal paper relative to the feed roller, wherein the diameter of the second platen is made larger than the diameter of the first platen, thereby making the transport speed of the thermal paper by the second platen higher than the transport speed of the thermal paper by the first platen, so that tension is applied to the thermal paper between the first thermal head and the second thermal head and slack in the thermal paper is prevented, and wherein the thermal paper is cut by the cutter member after printing.