STIRRING MEMBER, STIRRING DEVICE, AND IMAGE DEVELOPMENT DEVICE

摘要

A stirring device uses a powder stirring member (31) having a center shaft (43), a helical inner blade (41) placed along the center shaft (43), and a helical outer blade (42) rotating with the center shaft (43) and twisted in the direction opposite to the twist of the inner blade (41). The outer blade (42) is fixed to the outer peripheral edge of the inner blade (41) with a predetermined gap kept from the center shaft (43). The device quickly and reliably stirs powder.