| 摘要 |
PURPOSE:To resolve the influence of noise and to miniaturize a device by constituting a servo motor, which is controlled at constant speed as the driving source of a photosensitive body, form carrying rolls, etc., and a driver including a constant speed control means into one body. CONSTITUTION:A main motor drive 139 which controls a main motor 92 at a constant speed and where a quartz oscillator, an encoder, a power circuit, a servo circuit, etc., are attached to a substrate is fixed and attached to the main motor 92 which drives a gear string of a photosensitive body driving gear 95, a developing roll driving gear 96, a carrying roll driving gear 97, a paper ejecting roll driving gear 98, a heat roll driving gear 99, a paper ejecting roll driving gear 100, etc., and they are joined into one body to constitute a main motor unit 93. By such a one-body structure, cables connecting apparatus for constant speed control and the main motor 92 are minimized to make the device compact. |
