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    • 2. 发明专利
    • Electrophotographic toner, electrophotographic developer, toner cartridge, and image forming method
    • 电子印刷墨粉,电子显影剂,墨粉盒和图像形成方法
    • JP2009014994A
    • 2009-01-22
    • JP2007176475
    • 2007-07-04
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • DAIMON KATSUMISUGIZAKI YUTAKAYOSHINO SUSUMUNAKAZAWA HIROSHI
    • G03G9/087G03G9/08G03G15/08
    • G03G9/08755G03G9/08795G03G9/08797
    • PROBLEM TO BE SOLVED: To provide an electrophotographic toner capable of suppressing the occurrence of a streak-like image defect, when the first image is printed after the toner is left standing, under high humidity over a long period of time. SOLUTION: The electrophotographic toner contains at least a crystalline polyester resin, a non-crystalline polyester resin, a colorant, and a releasing agent. Among the resin contained in a toluene-soluble component of the toner, the acid value (A) of the resin, having a molecular weight of 30,000 to 100,000 as being separated by gel permeation chromatography relative to polystyrene standards, the acid value (B) of the resin having a molecular weight of 8,000 to 12,000 as being separated by gel permeation chromatography relative to polystyrene standards, the acid value (C) of the resin contained in a toluene-insoluble component of the toner satisfies the inequation 1: B>A>C. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了提供能够抑制条纹状图像缺陷的发生的电子照相调色剂,在第一图像在调色剂静置之后,在高湿度下长时间被打印时。 电解调色剂至少包含结晶聚酯树脂,非结晶聚酯树脂,着色剂和脱模剂。 在调色剂的甲苯可溶性成分中所含的树脂中,通过凝胶渗透色谱法相对于聚苯乙烯标准分离出分子量为30,000〜100,000的树脂的酸值(A),酸值(B) 的分子量为8,000〜12,000的树脂通过凝胶渗透色谱法相对于聚苯乙烯标准物分离,包含在调色剂的甲苯不溶成分中的树脂的酸值(C)满足不等式1:B> A > C。 版权所有(C)2009,JPO&INPIT
    • 3. 发明专利
    • Toner and developer for electrostatic latent image development, and image forming method
    • 静电图像发展的调色剂和图像形成方法
    • JP2005266560A
    • 2005-09-29
    • JP2004081411
    • 2004-03-19
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • EGUCHI ATSUHIKOTANIGUCHI SHUICHIIIZUKA AKIHIROKATAOKA RIEKOOKITA MASAHIROOYA YASUHIROSUGIZAKI YUTAKA
    • G03G9/08G03G9/10
    • PROBLEM TO BE SOLVED: To provide a toner and a developer for electrostatic latent image development that can maintain both efficient transfer property and high cleaning property for a long period even when a small-sized toner is used, and also to provide an image forming method which never causes a decrease in transfer efficiency due to inter-toner-particle cohesion even in a transfer system having, specially, a bias roll transfer system. SOLUTION: External addition agents are two kinds of addition agents containing a titanium compound A and a titanium compound B, and the toner for electrostatic latent image development consists of the toner particles of 4 to 8 μm in volume mean particle size, ≤1.23 in GSD indicating a volume granularity distribution, and 110 to 14 in shape coefficient SF1. Further, disclosed are the developer for electrostatic latent image development and the image forming method which use the toner. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供一种用于静电潜像显影的调色剂和显影剂,即使使用小型调色剂也能长时间保持有效的转印性能和高清洁性,并且还提供 图像形成方法,即使在特别是偏压辊传送系统的传送系统中也不会导致由于调色剂 - 颗粒内聚力而导致的传送效率的降低。 解决方案:外加剂是含有钛化合物A和钛化合物B的两种添加剂,静电潜像显影用调色剂由体积平均粒径为4〜8μm的调色剂颗粒构成,≤ GSD中的1.23表示体积粒度分布,形状系数SF1为110〜14。 此外,公开了静电潜像显影用显影剂和使用调色剂的图像形成方法。 版权所有(C)2005,JPO&NCIPI
    • 5. 发明专利
    • Electrophotographic toner and its manufacturing method
    • 电子照相色彩及其制造方法
    • JP2006085065A
    • 2006-03-30
    • JP2004272331
    • 2004-09-17
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • NAKAZAWA HIROSHITOMITA KAZUFUMIMATSUMOTO AKIRATSURUMI YOSUKEUDA MAYUKOIIZUKA AKIHIROSUGIZAKI YUTAKA
    • G03G9/087G03G9/08
    • PROBLEM TO BE SOLVED: To provide an electrostatic charge image developing toner which is superior in charging properties, transfer properties, fixing properties and cleaning properties and further has quick charging speed, even over a wide range of process speeds, and to provide a manufacturing method of the electrostatic charge image developing toner. SOLUTION: The manufacturing method of electrostatic charge image developing toner comprises, at least a process of aggregating particles to form aggregated particles, by mixing and heating dispersion liquid of binder resin fine particles having the volume average particle size of 1 μm or smaller, colorant particle dispersion liquid, release agent dispersion liquid and an aggregation agent, and subsequently heating and fusing the mixture to the temperature of the glass transition temperature of the binder resin fine particles or more to form the toner particles, and a process of attaching a titanium compound obtained by the reaction between TiO(OH) 2 and a silane compound to the surface of the toner particles. In the electrostatic charge image developing toner manufactured by the manufacturing method, the volume average particle size is 5 to 9 μm, the volume average particle size distribution index GSDv is 1.25 or smaller, and the shape factor SF1 is 125 to 140. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种静电荷图像显影调色剂,其充电性能,转印性能,定影性能和清洁性能优异,并且即使在广泛的处理速度下也具有快速的充电速度,并且提供 静电荷图像显影调色剂的制造方法。 解决方案:静电荷图像显影调色剂的制造方法至少包括将颗粒聚集以形成凝集颗粒的方法,通过混合并加热体积平均粒度为1μm或更小的粘结剂树脂细颗粒的分散液 ,着色剂颗粒分散液,脱模剂分散液和凝集剂,随后将混合物加热熔融至粘合剂树脂细颗粒的玻璃化转变温度以上以形成调色剂颗粒,并将附着 通过TiO(OH)2 SBS 2 与硅烷化合物之间的反应获得的钛化合物与调色剂颗粒的表面。 在通过制造方法制造的静电荷图像显影用调色剂中,体积平均粒径为5〜9μm,体积平均粒径分布指数GSDv为1.25以下,形状因子SF1为125〜140。 版权所有(C)2006,JPO&NCIPI
    • 6. 发明专利
    • Image forming method and developer for electrostatic latent image development
    • 用于静电图像发展的图像形成方法和开发
    • JP2005266597A
    • 2005-09-29
    • JP2004081595
    • 2004-03-19
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • YOSHIHARA KOTAROSUGIZAKI YUTAKAOYA YASUHIROIIZUKA AKIHIROTAKAGI SHINPEI
    • G03G9/08G03G9/113G03G15/08
    • PROBLEM TO BE SOLVED: To provide a developer for electrostatic latent image development and an image forming method, such that developer volume density is stable, regardless of the environment and toner density is controlled to obtain superior images over a long period. SOLUTION: The developer, which contains a toner and a carrier and is for toner density control using magnetic permeability variation, has a titanium compound A on the toner surface and a titanium compound B on the carrier surface, and has a toner shape coefficient (SF1) of 115 to 140; a lower quantity granularity distribution index of the toner satisfying lower GSDp=D50p/D16p≤1.27 [where D50p is the grain size value at which accumulation bis 50% from a toner grain size quantity distribution small-diameter side and D16p is the grain size value, at which accumulation is 16%]; 1×10 9 Ωcm ≤Rv≤5×10 12 Ωcm [where Rv is the volume resistivity of the carrier at 10,000 V/cm field strength]; and 100×R(A) COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供用于静电潜像显影的显影剂和图像形成方法,使得显影剂体积密度稳定,不管环境和调色剂密度如何被控制以获得长时间的优异图像。 解决方案:包含调色剂和载体并用于使用磁导率变化的调色剂密度控制的显影剂在调色剂表面上具有钛化合物A和载体表面上的钛化合物B,并且具有调色剂形状 系数(SF1)为115〜140; 调色剂的粒度分布指数较低,GSDp = D50p /D16p≤1.27[其中D50p是从调色剂颗粒尺寸分布小直径侧累积双50%的粒度值,D16p是晶粒尺寸值 ,积累16%]; 1×10 9 Ωcm≤Rv≤5×10 12 Ωcm[其中Rv是载体在10,000V / cm场强下的体积电阻率]; 和100×R(A)
    • 7. 发明专利
    • Electrostatic charge image developing developer and image forming method
    • 静电充电图像开发者和图像形成方法
    • JP2005266564A
    • 2005-09-29
    • JP2004081415
    • 2004-03-19
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • IIZUKA AKIHIROTANIGUCHI SHUICHIEGUCHI ATSUHIKOKATAOKA RIEKOOYA YASUHIROSUGIZAKI YUTAKA
    • G03G9/08
    • PROBLEM TO BE SOLVED: To provide an electrostatic charge image developing developer capable of providing images of high image quality with high transfer efficiency over a prolonged period of time in a toner reclaiming system in which a recovered residual toner after transfer is returned to a development vessel and reused, and capable of preventing the occurrence of image defects such as image unevenness and fog while improving cleaning performance, and to provide an image forming method using the developer. SOLUTION: In the electrostatic charge image developing developer with which an image is formed through a latent image forming step, a developing step, a transfer step and a cleaning step, and which is used in the toner reclaiming system, the toner comprises toner particles of a given shape and amorphous particles, a volume average particle diameter of the amorphous particles is within a range of 1-10 μm, and when a charge amount between the amorphous particles and carrier is represented by X and a charge amount between the toner and carrier by Y, the expression: 0.5≤X/Y≤1.4 is satisfied. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种静电荷图像显影显影剂,其能够在调色剂回收系统中在延长的时间内以高转印效率提供高图像质量的图像,其中转印回收的残留调色剂返回到 显影容器并重新使用,并且能够在改善清洁性能的同时防止诸如图像不均匀和雾化的图像缺陷的发生,并且提供使用显影剂的图像形成方法。 解决方案:在通过潜像形成步骤形成图像的静电电荷显影显影剂中,显影步骤,转印步骤和清洁步骤,并且其用于调色剂回收系统中,调色剂包括 给定形状的调色剂颗粒和无定形颗粒,无定形颗粒的体积平均粒径在1-10μm的范围内,并且当无定形颗粒和载体之间的电荷量由X表示时,电荷量 调色剂和载体Y表示:0.5≤X/Y≤1.4。 版权所有(C)2005,JPO&NCIPI
    • 8. 发明专利
    • Toner for electrostatic image development and method for manufacturing the same
    • 用于静电图像发展的调色剂及其制造方法
    • JP2006145725A
    • 2006-06-08
    • JP2004334233
    • 2004-11-18
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • ISHIYAMA TAKAONAKAZAWA HIROSHININOMIYA MASANOBUMAEHATA HIDEOSUGIZAKI YUTAKATAKAGI SHINPEI
    • G03G9/087G03G9/08
    • G03G9/097G03G9/0821G03G9/08797
    • PROBLEM TO BE SOLVED: To provide toner for electrostatic image development excellent in fixing property at low temperature and in blocking resistance of the toner, causing little warpage (curl) of paper in both side printing on thin paper, and having small process speed dependence of the fixing property, and to provide a method for manufacturing the same. SOLUTION: The toner for electrostatic image development contains a crystalline resin and at least one amorphous resin as a resin binder, and in dynamic viscoelasticity measurement by a sinusoidal oscillation method, when a measurement frequency is set to a range of 0.1-100 rad/s and a measurement strain to a range of 0.02-4.5%, a minimum value of relaxation modulus H in a relaxation spectrum obtained from frequency dispersion properties measured at 60°C and 80°C is in a range of 10-900 Pa/cm 2 , and a relaxation time λ corresponding to the minimum value is in a range of 1-10,000 s. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供在低温下的定影性能和调色剂的抗粘连性优异的静电图像显影用调色剂,在薄纸上的双面打印中几乎没有纸的翘曲(卷曲),并且具有小的工艺 定影性的速度依赖性,并提供其制造方法。 解决方案:用于静电图像显影的调色剂含有结晶树脂和至少一种无定形树脂作为树脂粘合剂,并且通过正弦振荡法进行动态粘弹性测量时,当测量频率设定为0.1-100 rad / s,测定应变为0.02〜4.5%的范围,由在60℃,80℃下测定的频率分散特性得到的松弛光谱中的松弛模量H的最小值为10〜900Pa / cm 2 ,对应于最小值的弛豫时间λ在1-10,000s的范围内。 版权所有(C)2006,JPO&NCIPI
    • 9. 发明专利
    • Electrophotographic toner and image forming method using the same
    • 电子照相色彩和使用该图像的图像形成方法
    • JP2005266563A
    • 2005-09-29
    • JP2004081414
    • 2004-03-19
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • KATAOKA RIEKOSUGIZAKI YUTAKAOYA YASUHIROTANIGUCHI SHUICHIIIZUKA AKIHIRO
    • G03G9/08
    • PROBLEM TO BE SOLVED: To provide a recycled toner which ensures less variation of properties, as compared with an initial toner. SOLUTION: In an electrophotographic toner used in an image forming method including a toner reclaiming step of returning a used toner removed in a cleaning step to a development step again as a recycled toner, [1] the toner comprises toner base particles containing at least a binder resin and a colorant, and external additives, [2] a shape factor SF1 of the toner base particles is within a range of 120-140, [3] the average primary particle diameter of the external additives is within a range of 1-80 nm, and [4] a loose apparent density (AD1) of the toner, a loose apparent mass density (AD2) of the recycled toner recovered in the toner reclaiming step, and the difference (ΔAD=¾AD1-AD2¾) between the loose apparent densities of the toner and the toner for electrophotographic satisfy specified relational expressions. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:与初始调色剂相比,提供确保较少的性能变化的再循环调色剂。 解决方案:在用于图像形成方法的电子照相调色剂中,包括将在清洁步骤中除去的用过的调色剂作为再循环调色剂返回到显影步骤的调色剂回收步骤,[1]调色剂包含含有 至少粘合剂树脂和着色剂以及外部添加剂,[2]调色剂基础颗粒的形状因子SF1在120-140的范围内[3],外部添加剂的平均一次粒径在一个范围内 和[4]调色剂的松散表观密度(AD1),在调色剂回收步骤中回收的再循环调色剂的松散表观质量密度(AD2)和差值(ΔAD=¾AD1-AD2¾) 在调色剂的松散表观密度和用于电子照相的调色剂之间满足指定的关系表达式。 版权所有(C)2005,JPO&NCIPI
    • 10. 发明专利
    • Image forming method and toner
    • 图像形成方法和调色剂
    • JP2005266561A
    • 2005-09-29
    • JP2004081412
    • 2004-03-19
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • OYA YASUHIROSUGIZAKI YUTAKATANIGUCHI SHUICHIIIZUKA AKIHIROTAKAGI SHINPEIYOSHIHARA KOTAROKATAOKA RIEKOOKITA MASAHIRO
    • G03G9/08G03G15/20
    • PROBLEM TO BE SOLVED: To provide an image forming method employing a circumferential speed of a heat fixing roll of 200 mm/sec or higher, the method which does not bring about image quality trouble like density irregularities and enables the life of a fixing device to be prolonged and enables the fixing device to be miniaturized and which is satisfactory in terms of fixing defects resulting from miniaturization of the fixing device, offset performance, and an instant-on function, and to provide a toner therefor. SOLUTION: The image forming method has a latent image forming step, a developer layer forming step, a developing step, a transfer step, and a fixing step, wherein toner contains a resin having a number average molecular weight within a certain range and a release agent having a melting point within a fixed range and has 3 to 7μm number average particle size and has ≥0.75 ratio of diameters of 16% and 50% cumulative particles and has ≤1.30 ratio of diameters of 84% and 50% cumulative particles and has SF1 within the range of 115 to 140, and the heat fixing roll has 200 to 500 mm/sec circumferential speed and has 20 to 30 mm external diameter. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了提供采用200mm / sec以上的热定影辊的圆周速度的图像形成方法,不会产生像密度不规则性等图像质量问题的方法,并且能够使 固定装置延长并且使得定影装置能够小型化,并且对于由于定影装置的小型化,定位装置的定影缺陷以及即时开启功能而导致的固定缺陷方面令人满意,并且为了提供调色剂。 解决方案:图像形成方法具有潜像形成步骤,显影剂层形成步骤,显影步骤,转印步骤和定影步骤,其中调色剂含有数均分子量在一定范围内的树脂 和具有熔点在固定范围内且具有3至7μm数均粒度的脱模剂,并且具有≥0.75比率的直径为16%和50%的累积颗粒,并且具有≤1.30的直径比率为84%和50%的累积比 颗粒,SF1在115〜140的范围内,热定影辊的圆周速度为200〜500mm /秒,外径为20〜30mm。 版权所有(C)2005,JPO&NCIPI