Developer for electrophotography with wet process silicic acid

Details Developer for electrophotography with wet process silicic acid Developer for electrophotography with wet process silicic acid

1983-07-29

1984-02-07

Martin, Jr., Roland E.

Radiation imagery chemistry: process, composition, or product th

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

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

430110, 428404, 428407, G03G 910, G03G 914, G03G 908

Patent

active

044304099

ABSTRACT:
As a developer for developing electrostatic images in electrophotography, electrostatic recording, electrostatic printing, etc., there is employed a developer containing a finely divided silicic acid which is a finely divided silicic acid synthesized by a wet process and has a pH value of 6 to 11 when suspended at a concentration of 4% by weight in distilled water and the developer can be positively charged strongly and uniformly to visualize the negative electrostatic images, giving a high quality image.

REFERENCES:
patent: 2986521 (1961-05-01), Wielicki
patent: 3639245 (1972-02-01), Nelson
patent: 3720617 (1973-03-01), Chatterji et al.
patent: 4051077 (1977-09-01), Fisher

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