Single-component non-magnetic toner developer for electrophotogr

Details Single-component non-magnetic toner developer for electrophotogr Single-component non-magnetic toner developer for electrophotogr

1993-07-13

1995-03-14

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

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

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

430903, G03G 9087

Patent

active

053976703

ABSTRACT:
A non-magnetic one-component toner developer for use in electrophotographic processes having a particle size distribution represented by the following expressions: d.sub.1 /d.sub.50 =0.32.about.0.55; d.sub.50 /d.sub.90 =0.50.about.0.70; and d.sub.50 =5-15.mu., wherein d.sub.1, d.sub.50, and d.sub.90 represent diameters of toner particles when the percentiles by volume or by weight of toner developer of that diameter are 1%, 50%, and 90%, respectively. The non-magnetic one-component toner developer disclosed in the present invention has a triboelectricity greater than 1.5 .mu.C/g, a bulk specific gravity than 0.36, and a compression ratio less than 0.24, and exhibits excellent triboelectrification characteristics and flowability, as well as provides uniformly clear images without foggy background.

REFERENCES:
patent: 5063133 (1991-11-01), Kubo
patent: 5250382 (1993-10-01), Shimojo et al.
patent: 5270143 (1993-12-01), Tomiyama et al.

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