Oxide-coated carriers and preparation and use thereof

Details Oxide-coated carriers and preparation and use thereof Oxide-coated carriers and preparation and use thereof

1989-09-07

1991-08-13

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

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

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

428404, G03G 9113

Patent

active

050395874

ABSTRACT:
A novel carrier which is stable and effective over long cycle times (6.times.10.sup.6 prints), has an iron oxide coating of the formula (FeO).sub.x.Fe.sub.2 O.sub.3 where x=0.1-1 and is obtained by treating steel cores (or balls) with defined small amounts of sulfuric acid of defined concentration, partial oxidation of the cores thus treated and drying at 60.degree.-150.degree. C. at .ltoreq.100 mbar.

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patent: 4584254 (1986-04-01), Makayama et al.
patent: 4590141 (1986-05-01), Aoki et al.
patent: 4816364 (1989-03-01), Oishi et al.
patent: 4925762 (1990-05-01), Ostertag et al.

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