| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide means for ensuring stable print density in a case where carbon black is used as colorant. <P>SOLUTION: Developer includes at least a binder resin, carbon black, and a charge control agent. When the charge control agent is a black charge control agent and the binder resin is 100 parts by weight, the blending quantity of the carbon black is 3.0 parts by weight or more to 7.0 parts by weight or less, and the blending quantity of the black charge control agent is 0.3 parts by weight or more to 1.2 parts by weight or less. <P>COPYRIGHT: (C)2012,JPO&INPIT |
