Developer having specific spheriodicity

Details Developer having specific spheriodicity Developer having specific spheriodicity

1989-01-18

1991-02-26

Martin, Roland

Radiation imagery chemistry: process, composition, or product th

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

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

430108, 430109, 430110, 430111, 430138, G03G 9093, G03G 9107

Patent

active

049961268

ABSTRACT:
This invention relates to a two-components developer containing toners and carriers wherein the toners have spheroidicity of 150 or less, mean particle size of 14 .mu.m or less and coefficient of variation of 15% or less, and the carriers have mean particle size of between 20 .mu.m and 70 .mu.m and/or spheroidicity of 140 or more.

REFERENCES:
patent: 3914181 (1975-10-01), Berg et al.
patent: 4284701 (1981-08-01), Abbott et al.
patent: 4557992 (1985-12-01), Haneda et al.
patent: 4592988 (1986-06-01), Aldrich et al.
patent: 4600675 (1986-07-01), Iwasa et al.
patent: 4601967 (1986-07-01), Suzuki et al.
patent: 4614698 (1986-09-01), Miyakawa et al.
patent: 4746589 (1988-05-01), Haneda et al.
patent: 4822711 (1989-04-01), Itaya et al.
patent: 4825246 (1989-04-01), Fukuchi et al.

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