Magenta toner and imaging processes

Details Magenta toner and imaging processes Magenta toner and imaging processes

1995-09-15

1996-10-01

Goodrow, John

Radiation imagery chemistry: process, composition, or product th

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

To produce color reproduction

430109, G03G 909

Patent

active

055610137

ABSTRACT:
An imaging process which comprises (1) charging an imaging member in an imaging apparatus; (2) creating on the member a latent image comprising areas of high, intermediate, and low potential; (3) developing the low areas of potential with a first developer comprising carrier particles and a first negatively charged toner comprised of resin, the magenta pigment 2,9-dimethyl quinacridone, a charge additive, or a mixture of charge additives, and surface additives; (4) developing the high areas of potential with a second developer comprising carrier particles and a second black toner comprised of resin, pigment, and a charge enhancing additive that enables a positively charged toner; (5) transferring the resulting developed image to a substrate; and (6) fixing the image thereto.

REFERENCES:
patent: 4057426 (1977-11-01), Mammino et al.
patent: 4078929 (1978-03-01), Gundlach
patent: 4264185 (1981-04-01), Ohta
patent: 4378415 (1983-03-01), Chu
patent: 5370962 (1994-12-01), Anderson et al.

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