| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent the ends of the rotation shafts of conveying members, bearing members, and so on from being heated, with the result that developer are fused on those members and so on, they are worn, or thermally deformed, even when the conveying members for conveying developer are rotated at high speeds within a developing device. <P>SOLUTION: In order that the rotation shafts 15a and 16a of the conveying members 15 and 16 provided with conveying vanes 15b and 16b be held by the bearing members 19a and 19b of extension parts 13a and 14a, which extend further sidewise than the circulating parts of developer conveying paths 13 and 14 along which developer D is conveyed and circulated, sealing members 18a and 18b are provided on the internal face side of the bearing members. Also, the rotation shafts of the conveying members near the sealing members are provided with returning vanes 15c and 16c radially projecting inclined in the direction in which developer guided by the sealing members is returned to the circulating parts. <P>COPYRIGHT: (C)2010,JPO&INPIT |
