| 摘要 |
PROBLEM TO BE SOLVED: To improve the dispersibility of an internal additive such as wax to prevent the fogging to a non-image part, the image broken in a solid image part rear end and the filming to a photoreceptor by providing a toner base body having a binder resin, a coloring agent and a meadowfoam oil derivative, and an external additive. SOLUTION: An external additive is applied to a toner base body formed by adding a coloring agent and a meadowfoam oil derivative to a binder resin. The meadowfoam oil derivative is preferably meadowfoam oil fatty acid, meadowfoam oil fatty acid ester or the like. The meadowfoam oil fatty acid obtained by saponifying meadowfoam oil consists of a fatty acid having 18-22 carbon atoms, and as its metal salt, a metal salt of sodium, potassium or the like is used. In the toner containing this, it has an effect on the improvement in stability as a fixing assistant to enhance the adhesive property with paper and reduces the frictional resistance on the image surface on a paper, so that the peeling of toner from the paper by friction is suppressed to improve the fixability. |
