Positively charged developer compositions containing quaternized

Details Positively charged developer compositions containing quaternized Positively charged developer compositions containing quaternized

1982-01-18

1983-08-09

Welsh, John D.

Radiation imagery chemistry: process, composition, or product th

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

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

430904, G03G 908

Patent

active

043979351

ABSTRACT:
The present invention is directed to a developer composition comprised of resin particles, pigment particles, carrier particles, and a charge enhancing additive of the following formula ##STR1## wherein R is an alkyl radical containing from about 1 carbon atom to about 25 carbon atoms, A is an anion, and x, y and z are numbers representing the weight percent of monomer present, wherein z is equal to about 1 weight percent to about 50 weight percent, and the sum of x plus y is equal to 100 minus z, thus this sum is equal to about 50 weight percent to about 99 weight percent, accordingly, the total sum of x+y+z is equal to about 100 weight percent; which compositions are useful in causing the development of electrostatic latent images in electrostatographic imaging systems wherein the photoresponsive device utilized is charged negatively.

REFERENCES:
patent: 3893935 (1975-07-01), Jadwin et al.
patent: 3944493 (1976-03-01), Jadwin et al.
patent: 3985664 (1976-10-01), Sakaguchi et al.
patent: 4079014 (1978-03-01), Burness et al.
patent: 4221856 (1980-09-01), Lu
patent: 4298672 (1981-11-01), Lu
patent: 4299898 (1981-11-01), Williams et al.

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