Process for making ferrite spherical particulate toner core from

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...

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106DIG1, 252 6255, 252 6256, 252 6258, 252 6259, 252 6260, 252 6262, 252 6263, 252 6264, 430107, 430108, 430135, 430965, G01G 900, G01G 914, G01G 910, C03G 4908

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046982892

ABSTRACT:
A process for making a ferrite spherical particulate toner carrier core from a raw fly ash comprising recovering the magnetic particles from the non-magnetic particles of the raw fly ash; selecting a desired size for the particles of the raw fly ash and screening the fly ash to obtain the desired sized particles; and purifying the resultant raw fly ash to obtain a ferrite composition having a particle size from 20-300 microns, in which the particles are essentially spherical, having an apparent density of at least 1.8 g/cm.sup.3, a saturation magnetization of 43-70 emu/g, a remanence of 5 emu/g or less, a Hall Flow of 20 sec. or greater/50 g.

REFERENCES:
patent: Re31540 (1984-03-01), Aldrich
patent: 2856365 (1958-10-01), Heck et al.
patent: 2886529 (1959-03-01), Guillaud
patent: 2927896 (1960-03-01), Bergmann
patent: 3565805 (1963-08-01), Jones et al.
patent: 3795618 (1972-03-01), Kasper
patent: 4076640 (1978-02-01), Forgensi et al.
patent: 4268320 (1981-05-01), Klingaman et al.
patent: 4319988 (1982-03-01), Aldrich
patent: 4485162 (1984-11-01), Imamura et al.
patent: 4592988 (1986-06-01), Aldrich et al.
Studies of the Constitution of Fly Ash Using Selective Dissolution, U.S. Army Eng., Waterways Experiment Station Report, May 1983, Prep. by Betrelle Memorial Inst., Columbus, Ohio.

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