| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a replenishing cartridge that can give stable image quality, without depending on the working environment or the state of use. <P>SOLUTION: The replenishing cartridge 65 includes: a replenishing developer containing a toner and a magnetic carrier; and a container having an opening to discharge the replenishing developer housed therein, wherein the container is a molded product of a resin composition which is essentially made of a polyester obtained by polymerizing an aromatic dicarboxylic acid and alkylene glycol and contains titanium oxide and/or zinc oxide. The magnetic carrier has a specific surface area T(C) of 0.02 m<SP>2</SP>/g or more and 0.70 m<SP>2</SP>/g or less, and the mass W(C) g of the magnetic carrier present in the container and the surface area S(Y) m<SP>2</SP>of the inner surface of the container, satisfies the relation: 4×S(Y)≤T(C)×W(C)≤100×S(Y). <P>COPYRIGHT: (C)2011,JPO&INPIT |
