Abstract: A method for heating and fixing an inking, particularly a toner powder on a plate-shaped support. Heat is applied and fixes the inking to a coated upper side of the support. The method of this invention can be used to fix and adhere toner inkings on thick-walled supports. In one method step of this invention, the coated upper side and/or an uncoated underside of the plate-shaped support each is subjected to infrared radiation and/or a hot air stream and/or a microwave radiation. At least a portion of the infrared radiation and/or the hot air stream and/or the microwave radiation directed onto the uncoated underside of the support passes through while another portion is absorbed, such as if the support has a high weight per unit area of the support. A ceramic or thermosetting toner forms the applied ink.

Abstract: An electrophotographic printing device including a toner-developer unit, a lighting device, a developer drum, a photoconductor, a transfer unit and an earthed charging device. The substrate to be printed is placed on a transport device and moved along the transfer unit and the toner image of the transfer unit is transmitted to the substrate. A clear, sharp and shadow-free printed image is obtained by arranging the substrate on a non-earthed, electrically conductive layer which is insulated relative to the earthed transport device by an insulator extending along the charging device that is located above the substrate and the measurement of substrate that is to be printed and that is oriented in the direction of transport. The charging device can be charged at a potential, exciting voltage UF, of between 1 to 10 kV, more particularly 1.5 to 4 kV.