Powdered developer material having specific particle diameter di

Details Powdered developer material having specific particle diameter di Powdered developer material having specific particle diameter di

1990-10-23

1992-09-15

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

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

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

430111, G03G 909

Patent

active

051477467

ABSTRACT:
Developer toner color-reactable with dye or dye precursor to form a color image, comprising developer material particles having at least one of a particle-diameter distribution in which the maximum particle diameter of the particle-diameter distribution is not greater than the second power of the average particle diameter on volume-basis of the particle-diameter distribution and another particle-diameter distribution in which Npn>Nsn (Npn represents a particle-occupied ratio on particle-number basis in a range of Dp, Nsn represents a particle-occupied ratio on particle-number basis in a range of Ds, Dp and Ds representing particle-diameter ranges satisfying the following inequalities:

REFERENCES:
patent: 4837107 (1989-06-01), Axelsson et al.
patent: 4943506 (1990-07-01), Dennizu et al.
patent: 4957840 (1990-09-01), Sakashita et al.

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