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AssigneeFuji Xerox Co., Ltd.
InventorsShinpei Takagi, Yasuhiro Oya, Etsuo Tominaga, Toyohumi Inoue, Tomohiro Takeda, Masahiro Uchida, Haruhide Ishida, Kouzou Ota, Hirokazu Hamano, Yusaku Shibuya, Jun Igarashi, Atsuhiko Eguchi, Yutaka Sugizaki
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The toner for developing an electrostatic charge image comprises a colorant, a binding resin and a resin copolymer of aliphatic hydrocarbon and aromatic hydrocarbon having 9 or more of carbon atoms. Preferably, the toner further comprises a wax. The endothermic peak of the wax at DSC is preferably from 70 to 100.degree. C. The petroleum resin copolymer preferably has a ring and ball softening point of from 80 to 170.degree. C., and the binding resin is preferably a polyester resin. The weight ratio of the aromatic hydrocarbon monomer and the aliphatic hydrocarbon monomer of the petroleum resin copolymer is preferably from 99:1 to 50:50.
A toner for developing an electrostatic charge image, comprising a colorant, a binding resin and a resin copolymer of an aliphatic hydrocarbon monomer and aromatic hydrocarbon monomer, said aromatic hydrocarbon monomer having 9 or more carbon atoms.
A developing agent for electrostatic charge image having carrier and toner, wherein the toner comprises a colorant, a binding resin and a resin copolymer of an aliphatic hydrocarbon monomer and aromatic hydrocarbon monomer, said aromatic hydrocarbon monomer having 9 or more carbon atoms.
An image formation method comprising forming an electrostatic latent image on an electrostatic latent image holding member, and developing said electrostatic latent image on the electrostatic latent image holding member by using a developing agent layer on a developing agent carrying member to form an image, wherein the developing agent comprises a colorant, a binding resin and a resin copolymer of an aliphatic hydrocarbon monomer and an aromatic hydrocarbon monomer, said aromatic hydrocarbon monomer having 9 or more carbon atoms.
Dependencies are inferred from the claim text.