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    • 95. 发明授权
    • Magnetic toner
    • 磁性调色剂
    • US09152065B2
    • 2015-10-06
    • US14364636
    • 2013-01-31
    • CANON KABUSHIKI KAISHA
    • Tomohisa SanoMichihisa MagomeYusuke HasegawaAtsuhiko Ohmori
    • G03G9/083G03G9/097
    • G03G9/0833G03G9/0836G03G9/0837G03G9/0839G03G9/09708G03G9/09725
    • A magnetic toner includes: magnetic toner particles containing a binder resin and a magnetic body; and inorganic fine particles that are present on the surface of the magnetic toner particles and are not a magnetic iron oxide and magnetic iron oxide particles that are present on the surface of the magnetic toner particles, wherein the inorganic fine particles present on the surface of the magnetic toner particles contain metal oxide fine particles, the metal oxide fine particles containing silica fine particles, and optionally containing titania fine particles and alumina fine particles, and a content of the silica fine particles being at least 85 mass % with respect to a total mass of the silica fine particles, the titania fine particles and the alumina fine particles; when a coverage ratio A (%) is a coverage ratio of the magnetic toner particles' surface by the inorganic fine particles and a coverage ratio B (%) is a coverage ratio of the magnetic toner particles' surface by the inorganic fine particles that are fixed to the magnetic toner particles' surface, the coverage ratio A and B/A satisfy prescribed ranges; and the magnetic iron oxide particles present on the magnetic toner particles' surface are from at least 0.10 mass % to not more than 5.00 mass % with respect to the total amount of the magnetic toner.
    • 磁性调色剂包括:含有粘合剂树脂和磁性体的磁性调色剂颗粒; 以及存在于磁性调色剂颗粒的表面上并且不是存在于磁性调色剂颗粒表面上的磁性氧化铁和磁性氧化铁颗粒的无机细颗粒,其中存在于磁性调色剂颗粒表面上的无机细颗粒 磁性调色剂颗粒含有金属氧化物微粒,含有二氧化硅微粒的金属氧化物微粒,任选地含有二氧化钛微粒和氧化铝微粒,二氧化硅微粒的含量相对于总质量为85质量% 的二氧化硅微粒,二氧化钛微粒和氧化铝微粒; 当覆盖率A(%)是无机细颗粒的磁性调色剂颗粒表面的覆盖率和覆盖率B(%)时,磁性调色剂颗粒表面的无机微粒的覆盖率为 固定在磁性调色剂颗粒表面上,覆盖率A和B / A满足规定范围; 存在于磁性调色剂颗粒表面上的磁性氧化铁颗粒相对于磁性调色剂的总量为至少0.10质量%至不多于5.00质量%。
    • 96. 发明申请
    • MAGNETIC SINGLE-COMPONENT DEVELOPER
    • 磁性单组分开发商
    • US20130273465A1
    • 2013-10-17
    • US13863046
    • 2013-04-15
    • KYOCERA DOCUMENT SOLUTIONS INC.
    • Takanori TanakaHiroki Uemura
    • G03G9/083
    • G03G9/0837G03G9/081G03G9/0827G03G9/083G03G9/08711
    • A magnetic single-component developer includes a spherical toner containing at least a magnetic powder and not containing a release agent in a binder resin, and a nonspherical toner containing at least a magnetic powder and a release agent in a binder resin. According to measurements taken from a scanning electron microscope image taken from 100 toner particles in the magnetic single-component developer, the spherical toner has a circularity of 0.980 or more, the nonspherical toner has a circularity of 0.960 or less, and a particle number ratio (A)/(B) of the number (A) of particles of the spherical toner to the number (B) of particles of the nonspherical toner is 3/7 or more and 5/5 or less.
    • 磁性单组分显影剂包括至少含有磁性粉末并且在粘合剂树脂中不含脱模剂的球形调色剂,以及在粘合剂树脂中至少含有磁性粉末和脱模剂的非球形调色剂。 根据从磁性单组分显影剂中的100个调色剂颗粒获取的扫描电子显微镜图像的测量结果,球形调色剂的圆度为0.980以上,非球形调色剂的圆形度为0.960以下,粒子数比 球形调色剂颗粒数(A)与非球形调色剂颗粒数(B)的比(A)/(B)为3/7以上至5/5以下。
    • 98. 发明授权
    • Toner
    • 爽肤水
    • US07842447B2
    • 2010-11-30
    • US11295230
    • 2005-12-06
    • Katsuhisa YamazakiMasami FujimotoDaisuke Yoshiba
    • Katsuhisa YamazakiMasami FujimotoDaisuke Yoshiba
    • G03G9/087
    • G03G9/08791G03G9/0833G03G9/0837G03G9/08722G03G9/08726G03G9/08733G03G9/08753G03G9/08755G03G9/08786G03G9/08788G03G9/08793G03G9/08795G03G9/08797
    • To provide a toner which allows low temperature fixation irrespective of the configuration of a fuser, which is excellent in offset resistance, and which provides high image quality at high and low humidities in a stable manner without causing any image defect over time. A toner containing: a binder resin and a colorant; in which the toner contains a THF-soluble component to be dissolved in tetrahydrofuran (THF); the binder resin component contained in the THF-soluble component contains: a vinyl resin unit (I) formed by at least a carboxyl group-containing vinyl resin and an epoxy group-containing vinyl resin and having an epoxy value of 0.001 to 1.000 eq/kg and a polyester unit (II) formed by condensation polymerization of monomers each containing fatty acid having 4 to 12 carbon atoms, aromatic tricarboxylic acid, and ethylene glycol; and the toner has a main peak present in a molecular weight region ranging from 3,000 to 30,000 on the measurement of a molecular weight distribution of the THF-soluble component by gel permeation chromatography (GPC).
    • 提供一种调色剂,其允许低温固化,而不考虑耐偏移性优异的定影器的结构,并且以稳定的方式在高和低湿度下提供高图像质量,而不会随时间引起任何图像缺陷。 含有粘合剂树脂和着色剂的调色剂; 其中调色剂含有可溶于四氢呋喃(THF)的THF可溶组分; THF可溶成分中所含的粘合剂树脂成分含有:至少含有羧基的乙烯基树脂和含环氧基的乙烯基树脂形成的乙烯基树脂单元(I),其环氧值为0.001〜1.000eq / kg和通过使含有4〜12个碳原子的脂肪酸的单体的缩聚形成的聚酯单元(II),芳香族三羧酸和乙二醇; 通过凝胶渗透色谱法(GPC)测定THF可溶性成分的分子量分布,调色剂在3000〜30,000的分子量范围内存在主峰。