| 摘要 |
PURPOSE:To excellently print an image even on an OHP sheet with simple structure by changing not only the actuating speeds of a printing station, a medium carrying belt and a fixing device but also the light emission intensity of the laser beam source of an optical scanner to height. CONSTITUTION:The printing station 33 is formed by successively and oppositely arranging a drum cleaner 27, a drum charger 28, the optical scanner 29, and the developing roller 31 of a developing device 30 on the surface of a photoreceptor drum 26; and the photoreceptor drums 26 of four printing stations 331 to 334 are consecutively arranged on the surface of the endless medium carrying belt 36. A driving control means formed of a program memory, a CPU, a laser driver, a high voltage circuit and a motor driver changes not only the actuating speeds of the printing stations 331 to 334, the belt 36 and the fixing device 43 but also the light emission intensity of the semiconductor laser oscillator of the optical scanner 29, and the generated voltage of the charger 28, the developing device 30, a transfer charger 42 and a belt destaticizer 44 to height. |
