VOLTAGE SUPPLY DEVICE FOR A DEVELOPING MACHINE TO PREVENT THE DEGRADATION OF IMAGE QUALITY AND THE LIFE DEGRADATION OF A PHOTOSENSITIVE BODY BY CONTACT IMPACT

摘要

PURPOSE: A voltage supply device for a developing machine is provided to prevent the degradation of image quality and the life degradation of a photosensitive body by contact impact when the developing machine is exchanged by switching a contact point using a relay part in a fixed state without moving the developing machine. CONSTITUTION: A connection PCB(Printed Circuit Board)(195) is connected with an HVPS(High Voltage Power Supply)(190) which generates a high voltage. At least one or more termination connection parts(198) connect input terminals of developing machines(131-134) with output terminals of the connection PCB. A voltage switching unit(110) has at least one or more relay parts(191) disposed in the connection PCB to selectively supply the voltage supplied from the HVPS to the developing machines.