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    • 11. 发明授权
    • Monocomponent-type developer for developing electrostatic image and
image forming method
    • 用于显影静电图像和图像形成方法的单组分型显影剂
    • US5348829A
    • 1994-09-20
    • US972540
    • 1992-11-06
    • Masaki UchiyamaYasutaka AkashiMasaaki TayaMakoto Unno
    • Masaki UchiyamaYasutaka AkashiMasaaki TayaMakoto Unno
    • G03G9/08G03G9/097G03G13/09G03G9/083
    • G03G13/09G03G9/0819G03G9/09708
    • A monocomponent-type developer for developing electrostatic images, includes a magnetic toner containing at least a binder resin and magnetic powder, and 0.5-10 wt. % (based on the magnetic toner) of inorganic fine powder having a length-average particle size of 0.1-5 .mu.m. The developer has a number-basis particle size distribution such that particles of 4 .mu.m or smaller are contained at 5-18% by number and particles of 4-10 .mu.m are contained at at least 60% by number. The developer has a volume basis particle size distribution such that particles of 12.7 .mu.m or larger are contained at at most 10% by volume. The developer has a weight-average particle size of 7-11 .mu.m. The developer is particularly useful for development under application of a DC-superposed asymmetric AC bias electric field including a development-side voltage component with a larger magnitude and a shorter duration than a reverse development-side voltage component.
    • 用于显影静电图像的单组分型显影剂包括至少含有粘合剂树脂和磁性粉末的磁性调色剂,和0.5-10重量% %(基于磁性调色剂)的无机细粉末,其长度平均粒径为0.1-5μm。 显影剂具有数量的粒度分布,使得4μm或更小的颗粒以5-18%数量包含,并且至少60%的数量包含4-10μm的颗粒。 显影剂的体积基础粒径分布使得12.7μm或更大的颗粒的含量至多为10体积%。 显影剂的重均粒径为7-11μm。 显影剂对于在施加直流叠加非对称AC偏置电场下的开发特别有用,该电场包括具有比反向显影侧电压分量更大的幅度和更短持续时间的显影侧电压分量。
    • 14. 发明授权
    • Toner for developing electrostatic images
    • 用于显影静电图像的调色剂
    • US5972554A
    • 1999-10-26
    • US064126
    • 1998-04-22
    • Takayuki NagatsukaHirohide TanikawaMakoto Unno
    • Takayuki NagatsukaHirohide TanikawaMakoto Unno
    • G03G9/087G03G9/097
    • G03G9/09733G03G9/08748
    • A toner for developing electrostatic images is formed of toner particles comprising a binder resin and a colorant, and inorganic fine powder. The toner further contains: a phenol-aldehyde condensate mixture comprising an acyclic condensate and a cyclic condensate, respectively, of a phenol compound with an aldehyde compound, and the phenol-aldehyde condensate mixture contains 10-80 mol % of condensate components having 4-6 phenolic units. The phenol-aldehyde condensate mixture may be contained in or externally added to the toner particles. Because of the inclusion of an acyclic condensate and appropriate amount of condensate components having 4-6 phenolic units, the phenol-aldehyde condensate mixture may exhibit a good dispersibility in the binder resin and a good charge control performance.
    • 用于显影静电图像的调色剂由包含粘合剂树脂和着色剂的调色剂颗粒和无机细粉末形成。 调色剂还包含:苯酚 - 醛缩合物混合物,其分别包含酚化合物与醛化合物的无环缩合物和环状缩合物,酚醛缩合物混合物含有10-80摩尔%的具有4- 6酚单位。 酚醛缩合物混合物可以包含在调色剂颗粒中或外部添加到调色剂颗粒中。 由于包含非循环冷凝物和适量的具有4-6个酚单元的冷凝物组分,苯酚 - 醛缩合物混合物在粘合剂树脂中表现出良好的分散性和良好的电荷控制性能。
    • 15. 发明授权
    • Toner for developing electrostatic image, image forming apparatus and
process cartridge
    • 用于静电图像显影的调色剂,成像设备和处理盒
    • US5439770A
    • 1995-08-08
    • US228269
    • 1994-04-15
    • Masaaki TayaTakaaki KohtakiMakoto UnnoTadashi Doujo
    • Masaaki TayaTakaaki KohtakiMakoto UnnoTadashi Doujo
    • G03G9/08G03G9/087G03G9/09G03G9/097
    • G03G9/08755G03G9/0819G03G9/091
    • A toner for developing an electrostatic image is constituted by at least a binder resin and a charge control agent. The binder resin has an acid value of 5-50. The charge control agent comprises an iron complex represented by the following formula: ##STR1## wherein X.sub.1 and X.sub.2 independently denote hydrogen atom, lower alkyl group, lower alkoxy group, nitro group or halogen atom; m and m' denote an integer of 1-3; R.sub.1 and R.sub.3 independently denote hydrogen atom, C.sub.1-18 alkyl or alkenyl, sufonamide, mesyl, sulfonic acid group, carboxy ester group, hydroxy, C.sub.1-18 alkoxy, acetylamino, benzoylamino or halogen atom; n and n' denote an integer of 1-3; R.sub.2 and R.sub.4 denote hydrogen atom or nitro group; and A.sup.+ denotes hydrogen ion, sodium ion, potassium ion or ammonium ion. The toner has a weight-average particle size (D.sub.4) of 4-9 .mu.m and including toner particles having a particle size of 5 .mu.m or smaller at 3-90% by number, toner particles having a particle size of 6.35-10.08 .mu.m at 1-80% by number and toner particles having a particle size of 12.7 .mu.m or larger at a percentage by volume of at most 2.0%, wherein the toner particles having a particle size of 5.0 .mu.m or smaller are contained at N % by number and at V % by volume satisfying a relationship:N/V=-0.05N+k,wherein k is a positive number in the range of 3.0-7.5.
    • 用于显影静电图像的调色剂由至少粘合剂树脂和电荷控制剂构成。 粘合剂树脂的酸值为5-50。 电荷控制剂包括由下式表示的铁络合物:氢原子,低级烷基,低级烷氧基,硝基或卤素原子; m和m'表示1-3的整数; R1和R3独立地表示氢原子,C1-18烷基或烯基,磺酰胺,甲磺酰基,磺酸基,羧基酯基,羟基,C1-18烷氧基,乙酰氨基,苯甲酰氨基或卤素原子; n和n'表示1-3的整数; R2和R4表示氢原子或硝基; A +表示氢离子,钠离子,钾离子或铵离子。 调色剂的重均粒径(D4)为4-9μm,包括粒径为5μm以下的调色剂颗粒为3-90%,调色剂颗粒的粒径为6.35-10.08 以数量为1-80%的粒径和粒径为12.7μm或更大的调色剂颗粒,其体积百分比至多为2.0%,其中粒径为5.0μm或更小的调色剂颗粒包含在 N%数,体积V%满足关系:N / V = -0.05N + k,其中k为3.0-7.5范围内的正数。
    • 17. 发明授权
    • Toner for developing electrostatic image, forming apparatus and process
cartridge
    • 用于静电图像显影的调色剂,成像设备和处理盒
    • US5483327A
    • 1996-01-09
    • US398791
    • 1995-03-06
    • Masaaki TayaTakaaki KohtakiMakoto UnnoTadashi Doujo
    • Masaaki TayaTakaaki KohtakiMakoto UnnoTadashi Doujo
    • G03G9/08G03G9/087G03G9/09G03G15/06
    • G03G9/08755G03G9/0819G03G9/091
    • An image forming apparatus and a process cartridge includes a toner for developing an electrostatic image that is constituted by at least a binder resin and a charge control agent. The binder resin has an acid value of 5-50. The charge control agent includes an iron complex represented by the following formula: ##STR1## wherein X.sub.1 and X.sub.2 independently denote hydrogen atom, lower alkyl group, lower alkoxy group, nitro group or halogen atom; m and m' denote an integer of 1-3; R.sub.1 and R.sub.3 independently denote hydrogen atom, C.sub.1-18 alkyl or alkenyl, sufonamide, mesyl, sulfonic acid group, carboxy ester group, hydroxy, C.sub.1-18 alkoxy, acetylamino, benzoylamino or halogen atom; n and n' denote an integer of 1-3; R.sub.2 and R.sub.4 denote hydrogen atom or nitro group; and A.sup.+ denotes hydrogen ion, sodium ion, potassium ion or ammonium ion. The toner has a weight-average particle size (D.sub.4) of 4-9 .mu.m and including toner particles having a particle size of 5 .mu.m or smaller at 3-90% by number, toner particles having a particle size of 6.35-10.08 .mu.m at 1-80% by number and toner particles having a particle size of 12.7 .mu.m or larger at a percentage by volume of at most 2.0%, wherein the toner particles having a particle size of 5.0 .mu.m or smaller are contained at N % by number and at V % by volume satisfying a relationship:N/V=0.05N+k,wherein k is a positive number in the range of 3.0-7.5.
    • 图像形成装置和处理盒包括用于显影由至少粘合剂树脂和电荷控制剂构成的静电图像的调色剂。 粘合剂树脂的酸值为5-50。 电荷控制剂包括由下式表示的铁络合物:其中X1和X2独立地表示氢原子,低级烷基,低级烷氧基,硝基或卤原子; m和m'表示1-3的整数; R1和R3独立地表示氢原子,C1-18烷基或烯基,磺酰胺,甲磺酰基,磺酸基,羧基酯基,羟基,C1-18烷氧基,乙酰氨基,苯甲酰氨基或卤素原子; n和n'表示1-3的整数; R2和R4表示氢原子或硝基; A +表示氢离子,钠离子,钾离子或铵离子。 调色剂的重均粒径(D4)为4-9μm,包括粒径为5μm以下的调色剂颗粒为3-90%,调色剂颗粒的粒径为6.35-10.08 以数量为1-80%的粒径和粒径为12.7μm或更大的调色剂颗粒,其体积百分比至多为2.0%,其中粒径为5.0μm或更小的调色剂颗粒包含在 N%数,体积V%满足关系:N / V = 0.05N + k,其中k为3.0-7.5范围内的正数。
    • 18. 发明授权
    • Toner for developing electrostatic image
    • 用于显影静电图像的调色剂
    • US5578408A
    • 1996-11-26
    • US365735
    • 1994-12-29
    • Takaaki KohtakiMasaaki TayaMakoto UnnoTadashi Doujo
    • Takaaki KohtakiMasaaki TayaMakoto UnnoTadashi Doujo
    • G03G9/08G03G9/087G03G9/097G03G9/083
    • G03G9/08782G03G9/0821G03G9/08755G03G9/08791G03G9/09733G03G9/09775
    • A toner for developing an electrostatic image is constituted by a binder resin and a colorant. The toner is characterized by a percentage change .sub.G' of at most 50% as calculated by the following formula (1):.gamma..sub.G' =(1-G'.sub.50% /G'.sub.1%).times.100 (1),wherein .gamma..sub.G' denotes a percentage change of storage modulus, G'.sub.50% denotes a storage modulus at 50% strain at 150.degree. C., and G'.sub.1% denotes a storage modulus at 1% strain at 150.degree. C.; a percentage change .gamma..sub.G" of at most 50% as calculated by the following formula (2):.gamma..sub.G" =(1-G".sub.50% /G".sub.1%).times.100 (2),wherein .gamma..sub.G" denotes a percentage change of loss modulus, G".sub.50% denotes a loss modulus at 50% strain, and G".sub.1% denotes a loss modulus at 1% strain; and a storage modulus G' of 3.times.10.sup.3 -7.times.10.sup.4 dyn/cm.sup.2 in a range of 1-50% strain at 150.degree. C. The toner is characterized by applicability to a wide variety of image forming apparatus, especially those having remarkably different fixing speeds.
    • 用于显影静电图像的调色剂由粘合剂树脂和着色剂构成。 调色剂的特征在于通过下式(1)计算的百分比变化G'为至多50%:γG'=(1-G'50%/ G'1%)×100(1),其中γG 表示储能模量的百分比变化,G'50%表示在150℃下50%应变下的储能模量,G'1%表示在150℃下1%应变下的储能模量。 通过下式(2)计算的百分比变化伽玛G“为50%以下:γG”=(1-G''50%/ G'1%)×100(2),其中γG “表示损耗模量的百分比变化,G''50%表示50%应变下的损耗模量,G'1%表示1%应变下的损耗模量; 以及在150℃下1-50%应变范围内的3×103-3×104dyn / cm2的储能模量G'。调色剂的特征在于适用于各种各样的图像形成装置,特别是具有非常不同定影速度的图像形成装置。
    • 20. 发明授权
    • Magnetic toner
    • 磁性调色剂
    • US5422215A
    • 1995-06-06
    • US186884
    • 1994-01-26
    • Seiichi TakagiMakoto Unno
    • Seiichi TakagiMakoto Unno
    • G03G9/08G03G9/083
    • G03G9/0834G03G9/0819G03G9/0835G03G9/0838Y10S430/104
    • A magnetic toner comprises a binder resin and a magnetic material.The magnetic toner has a volume average particle diameter of not more than 9 .mu.m and the variation coefficient of particle size distribution, (.sigma.T/D).times.100, of the magnetic toner satisfies the following condition:25.ltoreq.(.sigma.T/D).times.100.ltoreq.35where D represents a volume average particle diameter (.mu.m) of the magnetic toner and .sigma.T represents a value of standard deviation of the volume particle size distribution of the magnetic toner,The magnetic material has a number average particle diameter of from 0.1 .mu.m to 0.2 .mu.m and the variation coefficient of particle size distribution, (.sigma./X).times.100, of the magnetic material satisfies the following condition:(.sigma./X).times.100.ltoreq.40where X represents a number average particle diameter (.mu.m) of the magnetic material and .sigma. represents a value of standard deviation of the number particle size distribution of the magnetic material.
    • 磁性调色剂包括粘合剂树脂和磁性材料。 磁性调色剂的体积平均粒径不大于9μm,并且磁性调色剂的粒度分布变化系数(σT / D)×100满足以下条件:25(σT / D)×100