Toner, developer and image forming apparatus

Details Toner, developer and image forming apparatus Toner, developer and image forming apparatus

2008-09-17

2010-06-15

Dote, Janis L (Department: 1795)

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Post imaging process, finishing, or perfecting composition...

C430S110100, C430S110400, C430S111400

Reexamination Certificate

active

07736826

ABSTRACT:
A toner composition including toner particles including at least a binder resin; and a colorant, wherein the toner composition satisfies at least one of the following relationships (1) and (2):in-line-formulae description="In-line Formulae" end="lead"?B≦14 when 155<A≦180; andin-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?B≦0.6A−79 when 145≦A≦155,  (1)in-line-formulae description="In-line Formulae" end="tail"?wherein A represents a shape factor SF-1 of the toner composition and B represents a content of toner particles having a particle diameter not greater than 3 μm; andin-line-formulae description="In-line Formulae" end="lead"?B≦14 when 0.920≦A′≦0.950; andin-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?B≦394−400A′ when 0.950<A′≦0.965  (2)in-line-formulae description="In-line Formulae" end="tail"?wherein A′ represents an average circularity of the toner composition and B represents a content of toner particles having a particle diameter not greater than 3 μm.

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