Electrophotographic toner using bioplastic and method of producing the same
AssigneeCasio Computer Co., Ltd.
InventorsYuta KAN, Hideki IKEDA, Yuichiro IEGAKI, Kenji KIHIRA
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Abstract
An electrophotographic toner having good grindability, a wide fixing temperature range and excellent durability, and a method of producing the same are provided. The electrophotographic toner includes, as a binder resin, an amorphous bioplastic having a number average molecular weight (Mn) of 5,000 to 40,000, a weight average molecular weight (Mw) of 20,000 to 60,000, and a ratio of Mw/Mn of 1.4 or more.
Claims10
An electrophotographic toner comprising, as a binder resin, an amorphous bioplastic having a number average molecular weight (Mn) of 5,000 to 40,000, a weight average molecular weight (Mw) of 20,000 to 60,000, and a ratio of Mw/Mn of 1.4 or more.
A method of producing an electrophotographic toner, comprising:
- melt-kneading a mixture comprising, as a binder resin, an amorphous bioplastic having a number average molecular weight (Mn) of 5,000 to 40,000, a weight average molecular weight (Mw) of 20,000 to 60,000, and a ratio of Mw/Mn of 1.4 or more to obtain a kneaded product;
- and
- grinding the kneaded product after hardened.
Dependencies are inferred from the claim text.