Electrophotographic method uses toner of polyalkylene and non-ma

Details Electrophotographic method uses toner of polyalkylene and non-ma Electrophotographic method uses toner of polyalkylene and non-ma

1985-08-27

1987-10-27

Welsh, J. David

Radiation imagery chemistry: process, composition, or product th

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

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

430125, 430110, G03G 1308

Patent

active

047029862

ABSTRACT:
A dry developer for developing electrostatic images comprises (a) toner particles comprising 100 parts by weight of a binder resin and 1-20 parts by weight of polyalkylene having a ratio of weight average molecular weight to number average molecular weight of 2.0-10.0 and Z average molecular weight determined by gel permeation chromatography of 10,000-200,000, and containing 5-60% by weight of a component soluble in n-hexane at boiling point, kinetic friction coefficient of the toner particles being 0.20-0.50, and (b) non-magnetic inorganic fine powders having BET specific surface area according to a nitrogen adsorbing method of 0.5-500 m.sup.2 /g.
An image forming method comprises using the dry developer to develop electrostatic latent images on a photosensitive member having a surface hardness of 8 g or more, transferring the developed images to a receiving member, and removing the toner particles remaining on the photosensitive member by a cleaning means accompanying abrasion.

REFERENCES:
patent: 3079342 (1963-02-01), Insalaco
patent: 3964903 (1976-06-01), Van Besauw
patent: 4099968 (1978-07-01), Scouten et al.
patent: 4301228 (1981-11-01), Kori et al.

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