Electrostatic image-developing toner and image-forming method
AssigneeCanon Kabushiki Kaisha
InventorsManabu Ohno, Tsutomu Kukimoto, Satoshi Yoshida, Yasukazu Ayaki, Satoshi Handa, Akira Hashimoto, Keiji Komoto, Tsuyoshi Takiguchi
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Abstract
A toner for developing an electrostatic image has toner particles containing at least a binder resin, a colorant, and a wax. The wax contains an ester compound represented by specific formula, or a mixture thereof at a content ranging from 50 to 100% by weight based on the weight of the wax.
Claims112
A toner for developing an electrostatic image, comprising toner particles containing at least a binder resin, a colorant, and a wax, wherein the wax contains an ester compound represented by Formula (A), (B), (C), or (D), or a mixture thereof at a content ranging from 50 to 100% by weight based on the weight of the wax:
- ##STR23## (where R.sub.1, R.sub.2, and R.sub.3 are independently an organic group having from 9 to 39 carbons);
- ##STR24## (where R.sub.4, R.sub.5, R.sub.6, and R.sub.7 are independently an organic group having from 9 to 39 carbons);
- ##STR25## (where R.sub.8, R.sub.9, R.sub.10 and R.sub.11 are independently an organic group having from 9 to 39 carbons);
- ##STR26## (where R.sub.12, R.sub.13, R.sub.14 and R.sub.15 are independently an organic group having from 9 to 39 carbons).
An image forming method, comprising charging electrically an electrostatic image holder by a charging means having a voltage applied thereto, forming an electrostatic image by light exposure on the charged electrostatic image holder, developing the electrostatic image with a toner in the developing means to form a toner image on the electrostatic image holder, transferring the toner image from the electrostatic image holder through an intermediate transfer member or directly onto a transfer medium, and fixing the toner image by hot-pressing fixing means;
- wherein the toner comprises toner particles containing at least a binder resin, a colorant, and a wax, wherein the wax contains an ester compound represented by Formula (A), (B), (C), or (D), or a mixture thereof at a content ranging from 50 to 100% by weight based on the weight of the wax:
- ##STR27## (where R.sub.1, R.sub.2, and R.sub.3 are independently an organic group having from 9 to 39 carbons);
- ##STR28## (where R.sub.4, R.sub.5, R.sub.6, and R.sub.7 are independently an organic group having from 9 to 39 carbons);
- ##STR29## (where R.sub.8, R.sub.9, R.sub.10 and R.sub.11 are independently an organic group having from 9 to 39 carbons);
- ##STR30## (where R.sub.12, R.sub.13, R.sub.14 and R.sub.15 are independently an organic group having from 9 to 39 carbons).
Dependencies are inferred from the claim text.