| 摘要 |
PURPOSE:To make a supplying member unnecessary, to form the bottom part of a developing vessel to a flat shape, and to make it small in size by taking in a new developer from a containing part of the developing vessel by a rotational carrying force by a sleeve and a magnetic attracting force of a preliminary magnetic pole in a developing roll. CONSTITUTION:A new magnetic brush 10a formed on the sleeve 1 of the developing magnetic pole 8c and becomes an old magnetic brush 1b, and when passing through a containing part 5, a new developer 6a is adsorbed from the tip part of the brush 10b by the magnetic force of the preliminary magnetic pole 8b. Said new and old magnetic brushes are carried to a main magnetic pole 8a side, interted in the vicinity of the magnetic pole 8a, the brush 10b carried to the tip side collides with a trimmer 3 and is scraped down, and collected to the containing part 5 of the lower part by a chute 11. On the other hand, the brush 10a is positioned at the base end side and left. In this way, the brush 10a formed on the sleeve 1 becomes the brush 10b after the development, but after it has passed through the containing part 5 and the trimmer 3, the brush 10a is formed again and used for the next development. |
