发明名称 ELECTROSTATIC IMAGE DEVELOPING TONER, TWO-COMPONENT DEVELOPER, IMAGE FORMING METHOD AND PROCESS CARTRIDGE
摘要 A toner including: toner particles which include: a colorant, a releasing agent, and a binder resin. The number average particle diameter of the toner particles is in the range of from 3.5 μm to 6.5 μm, wherein the number average particle diameter is determined by the Coulter method, the variation coefficient of the number distribution of the toner particles is in the range of 22.0 to 35.0, wherein the variation coefficient is found by dividing the standard deviation of the number distribution by the number average particle diameter, and 40% by number to 59% by number of the toner particles are 4.0 μm to 8.0 μm in diameter.
申请公布号 EP2059856(B1) 申请公布日期 2016.05.25
申请号 EP20070806795 申请日期 2007.08.30
申请人 RICOH COMPANY, LTD. 发明人 HASEGAWA, KUMI
分类号 G03G9/087;G03G9/08 主分类号 G03G9/087
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