ELECTROSTATIC LATENT IMAGE DEVELOPING DEVICE

PURPOSE:To eliminate wasteful toner by providing a cylindrical or gutter-shaped conveyance part which is positioned in a toner reservoir more inside than an agitator roller and has at least its developer receiving opening open above the rotating surface of the agitator roller and also has a rotary blade internally. CONSTITUTION:The rotary blade 51 of the conveyor body consisting of the rotary blade 51 and a gutter body 52 formed by putting the rotary blade 51 therein is constituted by providing a spiral blade to a rotary shaft, and the gutter body 52 has its opening part upward as the developer receiving opening 521 and has a notch as a discharge opening 522 below one end. This conveyor body 5 is positioned in the toner reservoir 1 more inside than the agitator roller 4 so that the height of the developer receiving opening 4 is higher than the rotary surface of the agitator roller 4. The agitator roller 4 has a constant feed direction by the rotation of the spiral blade and this feed direction is set to the opposite side from the discharge opening 522 of the agitator roller 52 to nearly eliminate the deviation of a center part by agitation, and consequently toner is localized to one inner corner of the toner reservoir 1, so that the toner is fed back to the opposite corner by the conveyance part 5. Consequently, toner concentration is made uniform.