Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2005-05-24
2005-05-24
Goodrow, John L (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S116000, C399S057000, C399S237000
Reexamination Certificate
active
06897002
ABSTRACT:
A liquid developer which includes an insulating liquid, and toner fine particles containing a coloring agent and a toner resin. In the liquid developer, its electric capacitance does not significantly vary in an electric circuit where an electrical double-layer capacitor and an electronic resistance corresponding to a velocity of an electron exchange during an electrode reaction are connected in parallel, and a resistance corresponding to an electric conductivity of the insulating liquid is connected in series. The coloring agent has a coating layer so as to maintain distances between the toner fine particles. The insulating liquid has a viscosity of 0.5 mPa·s to 1000 mPa·s, a specific resistance of 1×1012Ωcm or more, and a surface tension of 30 dyn/cm or less, and may be a nonvolatile liquid having a boiling point of 100° C. or higher.
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Itaya Masahiko
Kurotori Tsuneo
Sasaki Tsutomu
Teraoka Tsutomu
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