Nonmagnetic one-component developing method

Details Nonmagnetic one-component developing method Nonmagnetic one-component developing method

1994-11-28

1996-07-09

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

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

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

430120, G03G 1308

Patent

active

055343775

ABSTRACT:
A contact-type nonmagnetic one-component developing method using a developing apparatus having at least a developer carrying member and a developer layer thickness control member provided so as to be adjacent to, or to be in contact under pressure with, said developer carrying member, which method comprises feeding a developer to said developer carrying member, forming a thin layer of the developer on a surface of the developer carrying member with the developer layer thickness control member with negatively charging the developer under friction, bringing the thin layer of the developer into contact with a photoconductive material holding an electrostatic latent image to develop the electrostatic latent image, and transferring the resultant developed image to an image receptor, said developer being a nonmagnetic one-component developer prepared by attaching fine particles of an additive to be positively charged to particles of a toner which is comprised mainly of a binder resin and a colorant and which is to be negatively charged, said developer being designed to be negatively charged under the friction in a hopper, the amount of fine particles of the additive being 0.05 to 3 parts by weight per 100 parts by weight of the toner.

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patent: 5215849 (1993-06-01), Makuta et al.

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