| 摘要 |
PURPOSE:To prevent elevation of temperature and to prevent deterioration of picture quality by providing a blowing fan for cooling pump motors for circulation and agitation of developer. CONSTITUTION:On a crown plate 2a of a developer tank 2 storing developer 1, a pump motor 3 circulating the developer and a pump motor 4 agitating the developer are disposed. A tunnellike cylindrical body 6 is provided to cover surroundings of these motors 3, 4, and a blowing fan 7 is disposed at an opening part of the body 6. Thus, when the run of the fan 7 starts, the motors 3, 4 are cooled, then elevation of temperature of the developer 1 due to heat releases of the motors 3, 4 is prevented and a reduction of optical density of image or a texture stain caused from the elevation of temperature are precluded, thereby the deterioration of picture quality is prevented. |
