| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a toner supply device capable of stabilizing the concentration of toner in a developing device by suppressing the occurrence of initial inflow and solid inflow and suppressing the contamination of the inside of the device caused by the scattering of the toner, with a simple configuration. <P>SOLUTION: A toner supply device 40 including a sub-hopper 48 temporarily storing the toner supplied from a replaceable toner bottle 32 and supplying the toner stored in the sub-hopper 48 to a developing device 5 includes the following toner conveyance path. A toner conveyance pipe 43 from the toner discharge port 79 of the sub-hopper 48 to the developing device 5 includes a horizontal R part such as a horizontal R part 431 and a horizontal R part 433 bent with predetermined curvature radii respectively at at least one and more places, the horizontal R part in which the center of the inner diameter of the toner conveyance pipe 43 is on a horizontal plane. <P>COPYRIGHT: (C)2013,JPO&INPIT |
