High speed magnetographic imaging process

Details High speed magnetographic imaging process High speed magnetographic imaging process

1980-04-30

1981-08-04

Welsh, John D.

Radiation imagery chemistry: process, composition, or product th

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

Magnetic imaging

430122, 430107, 430 97, 252 6254, 252 6256, G03G 1900

Patent

active

042822963

ABSTRACT:
This invention generally is directed to methods for developing images, including latent magnetic and electrostatic images, which involves forming latent images on a suitable substrate and contacting the image with a toner comprising a polymeric esterification product of 1,4-benzene-dicarboxylic acid polymerized with 1,2,4-benzenetricarboxylic acid - cyclic 1,2-anhydride and 2,2-dimethyl-1,3-propane diol in a magnetic material. The toner composition described is particularly useful in a magnetic imaging system. The magnetic material can act as both the colorant and magnetic substance, or an additional colorant such as carbon black can be utilized.

REFERENCES:
patent: 3043685 (1962-07-01), Rosenthal
patent: 3124483 (1964-03-01), Rheinfrank
patent: 3590000 (1971-06-01), Palermiti
patent: 3601091 (1971-08-01), Preckshot

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