| 摘要 |
<p>The invention relates to a printing apparatus for printing toner powder images on both sides of an image receiving support comprising an image recording medium for forming a toner powder image thereon; transfer means for transferring a toner powder image from the image recording medium to the image receiving support; fixing means (23,24) for fixing a transferred toner powder image on the image receiving support by means of pressure surfaces coming into contact with both sides of the image receiving support; image receiving support transport means for transporting an image receiving support provided with a toner powder image on a first side back to the transfer means for transferring a toner powder image to a second side of the image receiving support. The printing apparatus also comprises: adjustable image receiving support transport means (35) for transporting the image receiving support by means of transport surfaces coming into contact with the image receiving support, wherein the adjustable image receiving support transport means, as considered in the image receiving support transport direction, are disposed immediately after the fixing means; shifting means (48,49,54,60) for adjusting the fixing means and the adjustable image receiving support transport means to a first and second mode, wherein in the first mode the adjustable image receiving support transport means are operative and transport the image receiving support wherein the transport surfaces come into contact with the image receiving support and the fixing means are inoperative and the pressure surfaces thereof do not come into contact with the image receiving support, in the second mode the fixing means are operative and fix and transport the image receiving support wherein the pressure surfaces come into contact with the image receiving support and the adjustable image receiving support transport means are inoperative and the transport surfaces thereof do not come into contact with the image receiving support, the shifting means adjust the first and the second modes respectively on the first and second pass respectively of the image receiving support to be fixed on two sides by the fixing means. <IMAGE></p> |
