Imaging process comprising tri-level imaging area and an aluminu

Details Imaging process comprising tri-level imaging area and an aluminu Imaging process comprising tri-level imaging area and an aluminu

1990-03-28

1991-12-24

Welsh, David

Radiation imagery chemistry: process, composition, or product th

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

To produce color reproduction

430122, G03G 1301, G03G 1309

Patent

active

050751859

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 and a first toner comprised of resin, pigment excluding black and an aluminum complex charge enhancing additive; (4) developing the high areas of potential with a second developer comprising carrier and a second 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: 4078929 (1978-03-01), Gundlach
patent: 4686163 (1987-08-01), Ng et al.
patent: 4758491 (1988-07-01), Alexandrovich et al.
patent: 4845003 (1989-07-01), Kiriu et al.
patent: 4845004 (1989-07-01), Kobayashi
patent: 4855208 (1989-08-01), Tada et al.
patent: 4948686 (1990-08-01), Koch et al.

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