Patent · US Active

Charge control agent and toner comprising the same

US7943688B2 · kind B2 · utility

0Cited by

2References

20Claims

0Family size

Assignee

Hubei Dinglong Chemical Co., Ltd. · CN

Inventors

Delian Yi · 红钢城街道, CN
Lin Wu · Changsha, CN
Shunquan ZHU · 红钢城街道, CN

Key dates

Filing date	Jan 10, 2008
Grant date	May 17, 2011
Priority date	—
Expiry date	Mar 26, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/0091
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.