Carrier particles for use in electrostatic image development and

Details Carrier particles for use in electrostatic image development and Carrier particles for use in electrostatic image development and

1997-06-09

2000-03-21

Dote, Janis L.

Radiation imagery chemistry: process, composition, or product th

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

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

4301066, 430111, G03G 9113

Patent

active

06040101&

ABSTRACT:
A carrier particle which includes a core and a coating layer formed on the surface of the core. The coating layer is made of a coating material including: an organic compound (A) having a functional group other than an Si(OR.sup.1) group, where R.sup.1 is a hydrogen atom, a lower alkyl group or an acyl group; a compound (B) and/or a hydrolytic condensation product thereof, having a functional group having reactivity with the functional group of the organic compound (A), and an Si(OR.sup.1) group; an organometallic compound (C) and/or a hydrolytic condensation product thereof; and a solvent (D). The carrier particles of the present invention, enable toner particles to be sufficiently charged even at high temperature and high humidity, so that an image with no fog can be formed. In addition, the carrier particle has high durability. There is no unnecessary attachment of the toner particles onto the carrier particles, so that the problems of carrier particle contamination and spent toner never arise.

REFERENCES:
patent: 5342721 (1994-08-01), Akamatsu
patent: 5397668 (1995-03-01), Sato et al.
patent: 5885741 (1999-03-01), Akamastu et al.
Morrison & Boyd, Organic Chemistry, 3rd Edition, Allyn & Bacon, Inc, Boston (Jun. 1979) pp 79-80.

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