Color toner, electrostatic latent image developer, image forming method, and image producing device
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United States of America Patent
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Jan 25, 2005
Grant Date -
Mar 25, 2004
app pub date -
Feb 25, 2003
filing date -
Sep 20, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention discloses a color toner providing highly gloss image and documents with excellent long term storability; an electrostatic latent image developer; and an image forming method. Disclosed is a color toner comprising a binder resin and colorant, wherein the weight average molecular weight of the binder resin is from 6000 to 45000, the toner's glass transition temperature (Tg) is from 40 to 70.degree. C., the loss tangent tan .delta. of dynamic viscoelasticity is from 0.1 to 2.5 in the temperature of from the toner's glass transition temperature (Tg) to the temperature at which the loss modulus (G') is 1.times.10.sup.5 Pa, and the toner comprises 3 to 20% by mass of an ester derivative of an alicyclic compound having 1 or more carboxyl groups, and an electrostatic latent image developer and an image forming method, which use the color toner.
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