SOUTH KOREAN INVENTORS DEVELOPS LIQUID TONER COMPOSITION

[Anonymous]

http://www.mbtmag.com/articleXml/LN817068286.html
South Korean Inventors Develop Liquid Toner Composition
ALEXANDRIA,
Va., July 08 — Ki-won Seok and Nam-jeong Lee, both of Suwon-si, South
Korea, Min-young Cheong and Hae-ree Joo, both of Seoul, South Korea,
Kyung-yol Yon of Seongnam-si, South Korea, and Jung-wook Kim of
Yongin-si, South Korea, have developed a liquid toner preparation
method.According to the U.S. Patent & Trademark Office: “A liquid
toner composition and a preparation method utilize a colorant, an
organosol, a charge control agent, a carrier liquid, a dispersion
assistant agent, and a photoreactive catalyst, in which the dispersion
assistant agent is a polymer including an unsaturated functional group
to cause photopolymerization in a presence of the photoreactive
catalyst, and the photoreactive catalyst produces a free radical
through an irradiation of light, and initiates the photopolymerization
of the dispersion assistant agent.”An abstract of the invention,
released by the Patent Office, said: “According to embodiments of the
present invention, the toner organosol rarely affects the physical
properties required of the liquid toner, and an offset error in a
fixing operation is removed, resulting in an improved quality of a
printed image.”The inventors were issued U.S. Patent No. 7,374,852 on
May 20.The patent has been assigned to Samsung Electronics Co. Ltd.,
Suwon-Si.

[Author]

July 14, 2008 at 2:10 PM