Printing apparatus with improved heat transfer member

A printing apparatus comprising a roller system with a plurality of rollers for guiding the print medium in the movement direction, a heat transfer system for transferring heat away from or to a print medium moving in a movement direction through the printing apparatus, said heat transfer system comprising:

• a heat transfer member with a rotatable support surface configured for supporting the print medium;
• wherein the heat transfer member corresponds with a roller of said plurality of rollers
• wherein the heat transfer member is provided with at least one channel;
• said support surface being rotatable around an axis in order to move the print medium in the movement direction;
• a fluid circulation means configured for supplying a fluid through said at least one channel;
• a printing means;
• wherein said plurality of rollers comprises a first roller upstream of the printing means and a second roller downstream of the printing means,
• wherein the heat transfer member corresponds with at least one of the first roller and the second roller;
• wherein said at least one channel is configured such that, in operation, when fluid is supplied through said at least one channel, torque is generated in a fluido-mechanical manner around said axis, contributing to a rotational movement of the support surface of the heat transfer member.