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    • 6. 发明申请
    • TONER
    • 托尼
    • US20080187853A1
    • 2008-08-07
    • US12056917
    • 2008-03-27
    • Syuhei MoribeKatsuhisa YamazakiDaisuke YoshibaJunko HirataMasami FujimotoTakashige Kasuya
    • Syuhei MoribeKatsuhisa YamazakiDaisuke YoshibaJunko HirataMasami FujimotoTakashige Kasuya
    • G03G9/087
    • G03G9/08795G03G9/08711G03G9/08755G03G9/08793G03G9/08797
    • The present invention aims to provide a toner having excellent developability and excellent low-temperature fixability without causing adhesion of ejected sheets even in a high-speed oilless fixing system and capable of preventing a frameless printing from causing a twisted offseting phenomenon. Specifically, provided is a toner having toner particles including at least a binder resin and a colorant, in which, when the toner is dissolved in a tetrahydrofuran (THF) solvent at 25° C. for 24 hours, the ratio of a THF-soluble matter having an intrinsic viscosity of 5.0×10−2 dl/g or less with respect to the total amount of the THF-soluble matter in a GPC-RALLS-viscometer analysis is 15.0 mass % to 60.0 mass %, and the ratio of a THF-soluble matter having an intrinsic viscosity of 1.5×10−1 dl/g or more with respect to the total amount of the THF-soluble matter in a GPC-RALLS-viscometer analysis is 20.0 mass % to 40.0 mass %.
    • 本发明的目的在于提供一种即使在高速无油定影系统中也不会引起喷射片粘附并且能够防止无框印刷引起扭转偏移现象的显影性和优异的低温定影性的调色剂。 具体地说,提供了具有至少包含粘合剂树脂和着色剂的调色剂颗粒的调色剂,其中当调色剂在25℃下溶解在四氢呋喃(THF)溶剂中24小时时,THF可溶的比例 在GPC-RALLS-粘度计分析中,相对于THF可溶物的总量,特性粘度为5.0×10 -2 dl / g以下的物质为15.0质量%〜60.0质量% ,特性粘度为1.5×10 -1 dl / g以上的THF可溶性物质相对于GPC-RALLS-粘度计中THF可溶物质的总量的比例 分析为20.0质量%至40.0质量%。