Double=sided photocoper/printer with dual print units and page turner

摘要

The electrophotographic print system has two printing units consisting of a toner image generator for the print medium, a fixer unit which fuses the toner image by heating, a transport mechanism for the print medium, a pre-heater for the print medium, and a print medium sheet turner, turning the sheet in transit between the printing units.The printing unit in the end stage has a temperature control unit on the pre-heater, where the temperature setting is lower than the first such that the temperature setting is lower than the toner fusing temperature, avoiding degradation of the toner image already on the sheet.