Abstract: A drive system of an electro-photography process unit, which uses a drum gear mounted on one end of a shaft of a photo-sensitive drum for receiving the motion of a drive gear of a motor via an idle gear to drive the drum, a sleeve gear engaged with the drum gear for driving a sleeve of a developer arranged on one side of the drum with a space between the sleeve and the drums, a cleaning gear engaged with the drum gear for driving a cleaning roll of a cleaning device arranged on the other side of the drum, the cleaning gear being positioned on the opposite side of the drum with respect to the sleeve gear, another drum gear mounted on the other end of the shaft of the drum for preventing deviation of the drum, another sleeve gear engaged with the other drum gear for preventing deviation of the sleeve, and another cleaning gear engaged with the other drum gear for preventing deviation of the cleaning roll.

Abstract: A drive system for an electro-photography process unit including a first idle consisting of two gears coaxially arranged with a space for transmitting the power of a motor to a drum drive gear mounted on a shaft of a photo-sensitive drum and to a second idle gear with a different pitch for transmitting the power to a developer, the developer being arranged on one side of the drum, a magnet roll provided in the developer for transferring a toner to the drum, a first speedup gear with a different pitch engaged with the second idle gear for driving the magnet roll, and a second speedup gear with a different pitch engaged with the first speedup gear and with a gear of the magnet roll.