| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To highly achieve the stable discharging property of toner and the uniform chargeability in a developing part. <P>SOLUTION: In a replenishing cartridge which is attachable to and detachable from an image forming device composed of a replenishing agent containing at least toner and a magnetic carrier and a container having an opening for discharging the stored replenishing agent, the container is one obtained by molding a resin composition which comprises mainly a polyester obtained by polymerizing an aromatic dicarboxylic acid and alkylene glycol and contains at least carbon black, the magnetic carrier is one in which a resin coating layer is formed on the at least magnetic carrier core surface, the resin coating layer contains fine particles having a volume resistivity value of at least 1.0×10<SP POS="POST">5</SP>Ω.cm or more and 1.0×10<SP POS="POST">19</SP>Ω.cm or less and the replenishing agent stored in the replenishing cartridge has a loose apparent density of 0.365 g/cm<SP POS="POST">3</SP>or more and 1.000 g/cm<SP POS="POST">3</SP>or less. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
