| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a developing device, though being a compact one where a long-length developer storage part is provided at the upper part of a developer charging-layer forming part, which can perform stable replenishment of a developer to the charging-layer forming part and can perform a satisfactory developing operation. <P>SOLUTION: The developing device comprises a rolling shaft 8 arranged freely rollably at the upper part of a feed roller 3 for a developer such as toner, and one or more pairs of blade members 9 stretching to both the sides in the cross-sectional direction to the rolling shaft 8 divide a toner storage part 11 to the upper and lower directions, when they reach almost the horizontal direction; when a developer is present at the upper part of the rotary shaft 8, they are arranged so as to shield the developer in the toner storage part 11, and further, controls the rolling of the rolling shaft 8 by a load to the amount of the developer present in the lower part of the rolling shaft 8. The developing device 7 enabling image formation which is not influenced by the remainder of toner (developer) therein in the initial stage and with the lapse of time can be provided. <P>COPYRIGHT: (C)2008,JPO&INPIT |
