| 摘要 |
PURPOSE:To obtain a picture good in quality even if a device is turned upside down and to make the device small-sized and light-weight, by attaching a magnet roll, to which a high-resistance magnetic toner is attracted magnetically into a brush shape, freely attachably and detachably so that the toner is brought into contact with a fur brush of a developing device. CONSTITUTION:A cylindrical magnet roll 14 around which a high-resistance magnetic toner 13 is attracted into a brush shape is attached adjacently to a fur brush 12, and the toner 13 is attracted to the fur brush 12. The magnet roll 14 is attached freely attachably and detachably to a casing 15, and the magnet roll 14 is replaced when the toner 13 attracted to the magnet roll 14 is consumed. Since the toner 13 is preliminarily held around the magnet roll 14 by magnetism, the toner 13 is stuck uniformly to the fur brush 12 even if the device is inclined, and toner images of good quality are attained. Thus, it is unnecessary to provide a mechanism which approximates the magnet roll 14 to the fur brush 12, and the device is made small-sized. |
