Process of developing magnetic images and dry magnetic toner com

Details Process of developing magnetic images and dry magnetic toner com Process of developing magnetic images and dry magnetic toner com

1980-04-30

1981-10-06

Welsh, John D.

Radiation imagery chemistry: process, composition, or product th

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

Magnetic imaging

430 97, 430107, 430903, 252 6254, 430126, 430124, G03G 908

Patent

active

042936276

ABSTRACT:
This invention is generally directed to toner compositions comprised of a magnetic material and a resin comprising a polymeric esterification product of 1,4-benzenedicarboxylic acid polymerized with 1,2,4-benzenetricarboxylic aicd-cyclic 1,2-anhydride and 2,2-dimethyl-1,3-propane diol. The magnetic material can act as both the colorant and magnetic substance, or an additional colorant such as carbon black can be utilized. The toners of the present invention in one preferred embodiment are useful for developing magnetic images.

REFERENCES:
patent: 3079342 (1963-02-01), Insalaco
patent: 3239465 (1966-03-01), Rheinfrank
patent: 3601091 (1971-08-01), Preckshot

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