Image forming method and toner for developing latent...

Details Image forming method and toner for developing latent... Image forming method and toner for developing latent...

2011-05-03

2011-05-03

Le, Hoa V (Department: 1721)

Radiation imagery chemistry: process, composition, or product th

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

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

C430S109100, C430S124100

Reexamination Certificate

active

07935469

ABSTRACT:
Disclosed is a developer containing toner and carrier, the toner containing as a binder resin a polyol resin having a plurality of OH groups in a molecule chain having an EX/OH ratio between epoxy groups (EX) and OH groups (OH) of 0.990 to 1.010. The rotational speed α, pitch β and conveyance path length γ of an stirring and conveying unit satisfies 1.0×106≦α×β×γ≦16.0×106. Toner base particles having an electrostatic property satisfies 1.5<[QB/M3600]/[QB/M180]<2.5, toner having an electrostatic property satisfies 0.7<[QT/M3600]/[QT/M180]<1.3, the external additive comprises two types of fine inorganic particles having different resistance values, wherein the particle size distribution Y and added amount X of the fine inorganic particles with smaller resistance satisfy 0.1≦x≦2.0, and Y≦2.6×10−3X+0.0048.

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