Toner for developing electrostatic image and image forming method
AssigneeKonica Corporation
InventorsMikio Kohyama, Kenji Hayashi, Masafumi Uchida, Tsuyoshi Uchida, Hiroyuki Yamada
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Abstract
A toner for developing an electrostatic image comprising a resin, a colorant and a releasing agent in which the toner particles are obtained by salting out/fusion-adhering a resin particle comprising a binding resin and a releasing agent together with a colorant particle is disclosed. The toner comprises the toner particles having a variation coefficient of not more than 16% and a number variation coefficient of the number particle size distribution of not more than 27%.
Claims23
A toner for developing an electrostatic image comprising a resin, a colorant and a releasing agent, wherein the toner particles are obtained by salting out/fusion-adhering a resin particle comprising a binding resin and a releasing agent together with a colorant particle, and the toner comprises the toner particles having a variation coefficient of a shape variation of not more than 16% and a number variation coefficient of the number particle size distribution of not more than 27%, and the releasing agent is a crystalline polyester represented by the Formula (1),
- R1—(OCO—R2)n (1):
- wherein R1 and R2 each represent a hydrocarbon group having from 1 to 40 carbon atoms, which may have a substituent, and n is an integer of 1 to 4.
A toner for developing an electrostatic image comprising a resin, a colorant and a releasing agent, wherein the toner particles are obtained by salting out/fusion-adhering a resin particle comprising a binding resin and a releasing agent together with a colorant particle, and the toner comprises the toner particles having no corner of not less than 50% in number, and a number variation coefficient of the number particle size distribution of not more than 27%, and the releasing agent is a crystalline polyester represented by the Formula (1),
- R1—(OCO—R2)n (1):
- wherein R1 and R2 each represent a hydrocarbon group having from 1 to 40 carbon atoms, which may have a substituent, and n is an integer of 1 to 4.
A toner for developing an electrostatic image comprising a resin, a colorant and a releasing agent, wherein the toner particles are obtained by salting out/fusion-adhering a resin particle comprising a binding resin and a releasing agent together with a colorant particle, and the toner particles not less than 65% in number has a shape coefficient of from 1.2 to 1.6, and a variation coefficient of a shape variation of the toner particles is not more than 16%, and the releasing agent is a crystalline polyester represented by the Formula (1),
- R1—(OCO—R2)n (1):
- wherein R1 and R2 each represent a hydrocarbon group having from 1 to 40 carbon atoms, which may have a substituent, and n is an integer of 1 to 4.
Dependencies are inferred from the claim text.