Electrophotographic toner and method of preparing the same
AssigneeSamsung Electronics Co., Ltd.
InventorsJae-Hyeuk JEONG, Kyeong Pang, Jung-Ik Choi, Soon-Cheol Jeong, Hong-Chul Shin
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Abstract
The disclosure provides electrophotographic toner and a method of preparing the same. The toner includes a latex, a colorant, and a releasing agent, wherein the toner has a weight-average molecular weight of about 50,000 to about 80,000; a complex viscosity of about 1×103 to about 5×104 (Pa·s) at a temperature ranging from about 100° C. to about 140° C.; and a storage modulus Pa (dG′) to a loss modulus Pa (dG″) (dG′/dG″) ratio of about 1.10 to about 1.25.
Claims14
An electrophotographic toner comprising a latex, a colorant, and a releasing agent, wherein the electrophotographic toner has a weight-average molecular weight of about 50,000 to about 80,000;
- a complex viscosity of about 1×103 to about 5×104 (Pa·s) at a temperature ranging from about 100° C. to about 140° C.;
- and a storage modulus Pa (dG′) to a loss modulus Pa (dG″) (dG′/dG″) ratio of about 1.10 to about 1.25.
A method of preparing an electrophotographic toner, the method comprising the steps of:
- a) mixing a primary latex particle, a colorant dispersion, and a releasing agent dispersion to prepare a mixture;
- b) adding an agglomerating agent to the mixture to prepare a primary agglomerated toner;
- and
- c) coating a secondary latex, prepared by polymerizing one or more polymerizable monomers, on the primary agglomerated toner to provide a secondary agglomerated toner, thus preparing the electrographic toner,
- wherein the electrophotographic toner has a weight-average molecular weight of about 50,000 to about 80,000;
- a complex viscosity of about 1×103 to about 5×104 (Pa·s) at a temperature ranging from about 100° C. to about 140° C.;
- and a storage modulus Pa (dG′) to a loss modulus Pa (dG″) (dG′/dG″) ratio of about 1.10 to about 1.25.
Dependencies are inferred from the claim text.