Charge control agent and toner comprising the same

Details Charge control agent and toner comprising the same Charge control agent and toner comprising the same

2011-05-17

2011-05-17

Eashoo, Mark (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

Reexamination Certificate

active

07943688

ABSTRACT:
This invention teaches a charge control agent and a toner containing such a charge control agent. It solves the problem in current toner processing technique of inadequate electrification, unequal quantity of electricity, spreading and bottom ash. The charge control agent comprising metal complex of tannin acid in which metal atoms have 2 to 4 valences and tannin acid as coordination sub structure. The toners mentioned above at least contains resin, dyestuff and charge control agent of the invention. The powered carbon specializes in excellence in electrification, environment influence retardant. It can obtain stable and high definition image without spreading and bottom ash troubling.

REFERENCES:
patent: 4505944 (1985-03-01), Turner
patent: 6306929 (2001-10-01), Amon et al.
patent: 2003/0180643 (2003-09-01), Suzuki et al.
patent: 2006/0077247 (2006-04-01), Kobayashi et al.
Neopen dyes, Technical Information, BASF.

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