Magnetic dry developer for electrostatic photography and process

Details Magnetic dry developer for electrostatic photography and process Magnetic dry developer for electrostatic photography and process

1975-12-16

1978-08-22

Kendall, Ralph S.

Compositions

Electrolytes for electrical devices

96 1SD, 252 621R, 252 6253, 252 6254, 252513, 252519, 427 18, G03G 914

Patent

active

041087860

ABSTRACT:
A magnetic toner for electrostatic photography consisting essentially of spherical particles of a composition comprising a fine powder of a magnetic material having an average particle size not exceeding 1000 m.mu. and being dispersed in a binder resin, said powdery magnetic material being present in an amount of 25 to 75% by weight based on the composition, spherical particles of said composition having such a particle size distribution that particles having a particle size larger than 44 .mu. occupy up to 10% of the total particles and particles having a particle size smaller than 2 .mu. occupy up to 10% of the total particles, wherein said fine powder of the magnetic material is distributed predominantly in the surface layer portion of each spherical particle and said spherical particles have a volume resistivity not higher than 1 .times. 10.sup.11 .OMEGA.-cm as measured in a magnetic field of about 680 gauss under a voltage of 1000 V.

REFERENCES:
patent: 2718506 (1955-09-01), Ellemen
patent: 2890968 (1959-06-01), Giaimo
patent: 3042616 (1962-07-01), Brown
patent: 3052564 (1962-09-01), Kulesza
patent: 3093039 (1963-06-01), Rheinfrank
patent: 3133023 (1964-05-01), Vogel
patent: 3485758 (1969-12-01), Borucki et al.
patent: 3520811 (1970-07-01), Swoboda
patent: 3627682 (1971-12-01), Hall et al.
patent: 3639245 (1972-02-01), Nelson
patent: 3698005 (1972-10-01), Nacci et al.
patent: 3766096 (1973-10-01), Mastrangelo

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