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    • 1. 发明授权
    • Nonmagnetic monocomponent negatively chargeable color developer
    • US5905011A
    • 1999-05-18
    • US38904
    • 1998-03-12
    • Katsunori KuroseMasahiro AnnoChikara TsutsuiMinoru NakamuraHiroyuki Fukuda
    • Katsunori KuroseMasahiro AnnoChikara TsutsuiMinoru NakamuraHiroyuki Fukuda
    • G03G9/08G03G9/087G03G9/09G03G9/097
    • G03G9/09725G03G9/08755G03G9/09708G03G9/09716G03G9/0975
    • A nonmagnetic monocomponent negatively chargeable color developer which has excellent light transmittancy for overhead projection transparencies, excellent transfer characteristics, charging characteristics, and durability is provided. The nonmagnetic monocomponent negatively chargeable color developer contains color toner particles that contain a chromatic color colorant, binder resin, and charge control agent, and an exterior additive added to the exterior of said toner particles. The binder resin is a linear polyester resin having a softening point of about 100.degree. to about 120.degree. C., the sum of the acid value and the hydroxyl value is about 20 to about 40 KOH mg/g, and the weight-average molecular weight/number-average molecular weight ratio is less than about 10. The charge controller is a boron compound having the general structural formula (A) below: ##STR1## wherein R.sub.1 and R.sub.8 is a substituted or nonsubstituted aryl groups; R.sub.2 and R.sub.4 is a member selected from the group consisting of hydrogen, alkyl group, substituted or nonsubstituted aryl group; X represents a cation, and n is an integer of either 1 or 2. The exterior additive is a hydrophobic silica and hydrophobic titanium dioxide in a hydrophobic silica. The hydrophobic titanium dioxide weight ratio is about 1:1 to about 1:3 by weight. The total specific surface area S of said exterior additive microparticles is about 100 to about 300 (m.sup.2 /g.multidot.wt %), and is determined by equation (1):S=(Ss.multidot.Vs)+(St.multidot.Vt) (1)wherein Ss is the specific surface area (m.sup.2 /g) of the hydrophobic silica; Vs is the additive amount (weight percent) of hydrophobic silica relative to the toner particle; St is the specific surface area (m.sup.2 /g) of the titanium dioxide; and Vt is the additive amount (weight percent) of titanium dioxide relative to the toner particle. The total amount of added exterior additive microparticles is about 0.8 to about 2.5 percent-by-weight relative to the toner particles.
    • 5. 发明授权
    • Toner set and full-color image-forming method suitable for use of the toner set
    • 适用于调色剂组的调色剂和全色成像方法
    • US06387580B2
    • 2002-05-14
    • US09855538
    • 2001-05-16
    • Masahiro AnnoKatsunori KuroseMinoru NakamuraChikara TsutsuiHiroyuki Fukuda
    • Masahiro AnnoKatsunori KuroseMinoru NakamuraChikara TsutsuiHiroyuki Fukuda
    • G03G1301
    • G03G9/0827G03G9/0821G03G9/09708
    • The present invention provides a toner-set comprising yellow toner, magenta toner, cyan toner and black toner, in which the black toner comprises black toner particles comprising at least a binder resin and a black pigment and having a standard deviation of degree of roundness of not more than 0.045; the yellow toner comprises yellow toner particles comprising at least a binder resin and a yellow pigment and having a standard deviation of degree of roundness of not more than 0.045 and an average degree of roundness larger than that of the black toner particles, the magenta toner comprises magenta toner particles comprising at least a binder resin and a magenta pigment and having a standard deviation of degree of roundness of not more than 0.045 and an average degree of roundness larger than that of the black toner particles, and the cyan toner comprises cyan toner particles comprising at least a binder resin and a cyan pigment and having a standard deviation of degree of roundness of not more than 0.045 and an average degree of roundness larger than that of the black toner particles. The present invention also provides a method for forming full-color images suitable for use of the toner set.
    • 本发明提供一种包含黄色调色剂,品红色调色剂,青色调色剂和黑色调色剂的调色剂组合物,其中黑色调色剂包括至少包含粘合剂树脂和黑色颜料的黑色调色剂颗粒,并且具有不是圆度的标准偏差 大于0.045;黄色调色剂包含至少包含粘合剂树脂和黄色颜料的黄色调色剂颗粒,其圆度的标准偏差不大于0.045,平均圆度大于黑色调色剂颗粒, 品红色调色剂包括至少包含粘合剂树脂和品红色颜料的品红色调色剂颗粒,其圆度的标准偏差不大于0.045,平均圆度大于黑色调色剂颗粒,而青色调色剂包括 包含至少粘合剂树脂和青色颜料并且具有不为圆度的标准偏差的青色调色剂颗粒 矿石比0.045大,平均圆度大于黑色调色剂颗粒的平均度。本发明还提供一种形成适合于使用调色剂组的全色图像的方法。
    • 10. 发明授权
    • Toner set and full-color image-forming method suitable for use of the toner set
    • 适用于调色剂组的调色剂和全色成像方法
    • US06265125B1
    • 2001-07-24
    • US09288022
    • 1999-04-08
    • Masahiro AnnoKatsunori KuroseMinoru NakamuraChikara TsutsuiHiroyuki Fukuda
    • Masahiro AnnoKatsunori KuroseMinoru NakamuraChikara TsutsuiHiroyuki Fukuda
    • G03G908
    • G03G9/0827G03G9/0821G03G9/09708
    • The present invention provides a toner-set comprising yellow toner, magenta toner, cyan toner and black toner, in which the black toner comprises black toner particles comprising at least a binder resin and a black pigment and having a standard deviation of degree of roundness of not more than 0.045; the yellow toner comprises yellow toner particles comprising at least a binder resin and a yellow pigment and having a standard deviation of degree of roundness of not more than 0.045 and an average degree of roundness larger than that of the black toner particles, the magenta toner comprises magenta toner particles comprising at least a binder resin and a magenta pigment and having a standard deviation of degree of roundness of not more than 0.045 and an average degree of roundness larger than that of the black toner particles, and the cyan toner comprises cyan toner particles comprising at least a binder resin and a cyan pigment and having a standard deviation of degree of roundness of not more than 0.045 and an average degree of roundness larger than that of the black toner particles. The present invention also provides a method for forming full-color images suitable for use of the toner set.
    • 本发明提供一种包含黄色调色剂,品红色调色剂,青色调色剂和黑色调色剂的调色剂组合物,其中黑色调色剂包含至少包含粘合剂树脂和黑色颜料的黑色调色剂颗粒,并且具有 不大于0.045;黄色调色剂包含至少包含粘合剂树脂和黄色颜料的黄色调色剂颗粒,其圆度的标准偏差不大于0.045,平均圆度大于黑色调色剂颗粒的平均度 品红色调色剂包括品红色调色剂颗粒,其至少包含粘合剂树脂和品红色颜料,并且具有不大于0.045的圆度的标准偏差并且平均圆形度大于黑色调色剂颗粒的圆度,并且青色调色剂 包括至少包含粘合剂树脂和青色颜料的青色调色剂颗粒,并且具有不具有圆度的标准偏差 大于0.045,平均圆度大于黑色调色剂颗粒的平均度。本发明还提供了一种形成适用于调色剂组的全色图像的方法。