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    • 2. 发明专利
    • Method for manufacturing electrostatic charge image developing toner, and electrostatic charge image developing toner
    • 制造静电电荷图像显影剂的方法和静电电荷图像显影剂
    • JP2007171927A
    • 2007-07-05
    • JP2006285032
    • 2006-10-19
    • Ricoh Co Ltd株式会社リコー
    • MATSUOKA SONOOSAITO TAKUYAUCHINOKURA OSAMUMIYAGAWA MASASHI
    • G03G9/087
    • PROBLEM TO BE SOLVED: To manufacture a toner which exhibits stable fixing characteristics and has a stable volume average grain size and sharp grain size distribution by suppressing the adhesion of an emulsified dispersion liquid within a storage tank and simultaneously having thermal characteristics maintained. SOLUTION: In the method for manufacturing the toner having a step of emulsifying and dispersing an organic solvent composition containing at least a binder resin and a colorant in an organic solvent in an aqueous medium to obtain the emulsified dispersion liquid and storing the same into the storage tank, a step of adding deionized water to the liquid at need, and a step of removing the organic solvent, the electrostatic charge image developing toner is so manufactured that the weight Wa of the emulsified dispersion liquid and the weight Wb of the deionized water to be added before the removal of the organic solvent have a relation: formula (1): 0≤Wb/(Wa+Wb)≤0.4. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:通过抑制乳化分散液在储罐内的粘附性并同时具有保持热特性,制造具有稳定的定影特性并具有稳定的体积平均粒径和锐利的粒度分布的调色剂。 解决方案:在具有将包含至少一种粘合剂树脂和着色剂的有机溶剂组合物在有机溶剂中在水性介质中乳化和分散以获得乳化分散液并将其存储的步骤的调色剂的制造方法中, 进入储罐中,在需要的液体中加入去离子水的步骤和去除有机溶剂的步骤,制得静电荷图像显影调色剂,使得乳化分散液的重量W w和 在去除有机溶剂之前加入的去离子水具有以下关系:式(1):0≤Wb/(Wa + Wb)≤0.4。 版权所有(C)2007,JPO&INPIT
    • 3. 发明专利
    • Method for manufacturing image-forming particles, and the image-forming particles
    • 制造图像形成颗粒的方法和图像形成颗粒
    • JP2007065630A
    • 2007-03-15
    • JP2006192374
    • 2006-07-13
    • Ricoh Co Ltd株式会社リコー
    • SAITO TAKUYAWATANABE SHINKOSAITO AKINORIEMOTO SHIGERUMATSUOKA SONOO
    • G03G9/087
    • PROBLEM TO BE SOLVED: To easily manufacture image-forming particles having an always stable volume average grain size and a sharp grain size distribution without waste, and to provide the image forming particles suitable for a fixing device capable of achieving energy saving and capable of forming high-definition images with developability that is satisfactory over a long period, and to provide a method for manufacturing the same. SOLUTION: The method comprises manufacturing the image forming particles by dissolving or dispersing a polymer and a colorant into at least an organic solvent to obtain an organic solvent liquid and subjecting the organic solvent liquid to dispersion in an aqueous medium, to obtain an aqueous dispersion liquid containing the liquid drops of the organic solvent, then removing the organic solvent from the aqueous dispersion liquid, thence subjecting the liquid to washing and drying, in which the dispersion of the organic solvent liquid in the aqueous medium is continuous, and the aqueous dispersion liquid discharged after the dispersion is stored under stirring, until the liquid is subjected to the removal of at least the organic solvent; and the liquid does not again undergo the dispersion process. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了容易地制造具有总是稳定的体积平均粒径和锐利的粒度分布的图像形成颗粒而没有浪费,并且提供适合于能够实现节能的定影装置的成像颗粒, 能够形成长时间令人满意的显影性的高清晰度图像,并提供其制造方法。 解决方案:该方法包括通过将聚合物和着色剂溶解或分散在至少一种有机溶剂中来制造成像颗粒,以获得有机溶剂液体并使有机溶剂液体在水性介质中分散,得到 含有有机溶剂的液滴的水分散液,然后从水分散液中除去有机溶剂,然后使液体进行洗涤和干燥,其中有机溶剂液体在水性介质中的分散是连续的, 在分散后排出的水分散液在搅拌下储存,直到液体至少除去有机溶剂; 并且液体不再经历分散过程。 版权所有(C)2007,JPO&INPIT
    • 4. 发明专利
    • Method for producing emulsified particle
    • 生产乳化颗粒的方法
    • JP2006299219A
    • 2006-11-02
    • JP2005186820
    • 2005-06-27
    • Ricoh Co Ltd株式会社リコー
    • SAITO TAKUYAMATSUOKA SONOOWATANABE SHINKOSAITO AKINORITAKAHASHI HIROSHIMIYAGAWA MASASHI
    • C08J3/02C08L101/00
    • PROBLEM TO BE SOLVED: To provide a method for producing an emulsified particle, by which an emulsified particle having a fixed particle diameter is produced stably with time under an automatic control. SOLUTION: In the method for producing an emulsified particle, by which a water phase and an oil phase are emulsified and an emulsified particle having 3-10 μm particle diameter is produced and which has a measurement process for measuring the particle diameter of the emulsified particle, a calculation process for calculating a value expressing a variation state of the measured value of particle diameter obtained by the calculation process and a control process for controlling the stirring condition of an emulsifier based on the calculated value obtained the calculation process, in the calculation process, any of at least an emulsified particle diameter Dv, the change value ΔDv of the emulsified particle diameter Dv and the predicted converge value Dv∞ of the emulsified particle diameter is calculated and in the control process, the number of revolutions of at least the stirring of the emulsifier is varied and the emulsified particle diameter is controlled. COPYRIGHT: (C)2007,JPO&INPIT
    • 待解决的问题:提供一种生产乳化颗粒的方法,由此在自动控制下随时间稳定地产生具有固定粒径的乳化颗粒。 解决方案:在乳化颗粒的制备方法中,水相和油相被乳化,产生具有3-10μm粒径的乳化颗粒,并且其具有用于测量颗粒直径的测量方法 乳化粒子,计算表示通过计算处理获得的粒径测定值的变化状态的值的计算处理以及控制乳化剂的搅拌条件的控制方法,基于计算过程得到的计算值,在 计算过程中,计算乳化粒径Dv,乳化粒径Dv的变化值ΔDv和乳化粒径的预测收敛值Dv∞中的任一个,并且在控制处理中, 乳化剂的搅拌至少不同,乳化粒径受到控制。 版权所有(C)2007,JPO&INPIT
    • 6. 发明专利
    • Toner for electrophotography, developer, developing device, and image forming apparatus
    • 电子摄影,开发者,开发设备和图像形成设备的调色剂
    • JP2006184746A
    • 2006-07-13
    • JP2004380204
    • 2004-12-28
    • Ricoh Co Ltd株式会社リコー
    • KOBAN AKIHIROSASAKI FUMIHIRONAKAYAMA SHINYASAKATA KOICHIICHIKAWA TOMOYUKIASAHINA YASUOUCHINOKURA OSAMUMOCHIZUKI MASARUNAKAJIMA HISASHIMATSUOKA SONOOSAITO TAKUYA
    • G03G9/08G03G9/087G03G9/10
    • PROBLEM TO BE SOLVED: To provide toner which reduces pile height even in the case of a spherical toner and enables uniform transfer by specifying the relationship between the depths of creases in a toner surface and the frequency of heights, and specifying the relationship between particle diameter and average circularity. SOLUTION: The toner for electrostatic latent image development composed essentially of a binder resin and a pigment and has a volume average particle diameter of 3-8 μm, an average circularity of ≥0.93 and a creased surface shape, and when particle surface irregularity information on a plurality of toner particles is digitalized from measured data by a laser microscope to obtain the distribution of the frequencies of heights of the toner particles, the peak value of the particle heights is in a range of 3-8 μm and the distribution width of toner particle heights corresponding to the half value of the maximum frequency is in a range of 0.5-1.2 μm. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:即使在球形调色剂的情况下也提供降低绒头高度的调色剂,并且通过指定调色剂表面的折痕深度与高度的频率之间的关系能够均匀地转印,并且指定关系 颗粒直径和平均圆形度之间。 解决方案:用于静电潜像显影的调色剂基本上由粘合剂树脂和颜料组成,并且具有3-8μm的体积平均粒径,≥0.93的平均圆形度和褶皱表面形状,并且当颗粒表面 通过激光显微镜将多个调色剂颗粒上的不规则信息从测量数据数字化,以获得调色剂颗粒的高度频率分布,颗粒高度的峰值在3-8μm的范围内,并且分布 对应于最大频率的半值的调色剂颗粒高度的宽度在0.5-1.2μm的范围内。 版权所有(C)2006,JPO&NCIPI
    • 7. 发明专利
    • Method for manufacturing toner for electrostatic charge image development, developer, image forming apparatus, image forming method and process cartridge
    • 用于制造静电电荷图像开发的调色剂的方法,开发者,图像形成装置,图像形成方法和过程盒
    • JP2006139161A
    • 2006-06-01
    • JP2004329963
    • 2004-11-15
    • Ricoh Co Ltd株式会社リコー
    • MATSUOKA SONOOSAITO TAKUYATAKAHASHI HIROSHINISHIZAKI TOSHINAGAKURODA NOBORUKOZU OSAMU
    • G03G9/087
    • PROBLEM TO BE SOLVED: To provide a method by which a toner having an always stable volume average particle diameter and a sharp particle size distribution is easily manufactured without waste.
      SOLUTION: In the method for manufacturing a toner including a step of preparing an emulsified liquid by mixing an organic solvent composition containing at least a binder resin and a colorant in an organic solvent or a polymerizable monomer composition containing at least a polymerizable monomer and a colorant in an aqueous medium and applying shear force to the resulting mixed liquid, the step of preparing the emulsified liquid is carried out under conditions which increase an average particle diameter of the organic solvent composition or the polymerizable monomer composition in the mixed liquid when shear force applied to the mixed liquid is increased.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种容易制造具有总体均匀的体积平均粒径和尖锐的粒度分布的调色剂的方法,而不浪费。 解决方案:在制造调色剂的方法中,包括通过将至少含有粘合剂树脂和着色剂的有机溶剂组合物在有机溶剂中混合制备乳化液体的步骤或至少含有可聚合单体的可聚合单体组合物 和水性介质中的着色剂并对所得混合液施加剪切力,制备乳化液的步骤在增加混合液体中有机溶剂组合物或可聚合单体组合物的平均粒径的条件下进行, 施加到混合液体的剪切力增加。 版权所有(C)2006,JPO&NCIPI
    • 8. 发明专利
    • Toner and developer for electrostatic image development, image forming apparatus, process cartridge using the same and image forming method
    • 静电图像发展的调色剂和显影剂,图像形成装置,使用它们的方法盒和图像形成方法
    • JP2006058502A
    • 2006-03-02
    • JP2004238972
    • 2004-08-19
    • Ricoh Co Ltd株式会社リコー
    • SAKATA KOICHIMOCHIZUKI MASARUSASAKI FUMIHIROASAHINA YASUOKOBAN AKIHIROMATSUOKA SONOOSAITO TAKUYAUCHINOKURA OSAMUNAKAJIMA HISASHIIWAMOTO YASUTAKASUGIURA HIDEKIICHIKAWA TOMOYUKINAKAYAMA SHINYA
    • G03G9/08G03G15/20
    • PROBLEM TO BE SOLVED: To provide a developer and toner having good charging property and charge buildup performance of the toner and free of toner spent on a carrier, etc., and filming on a photoreceptor, to provide a developer and toner adaptable to a low temperature fixing system and having good offset resistance while maintaining cleanability, and to provide an image forming apparatus and an image forming method. SOLUTION: In the toner for electrostatic image development including at least toner particles and inorganic fine particles, the inorganic fine particles consist of at least two kinds of inorganic fine particles and at least silica and titanium oxide are included as the inorganic fine particles. When ultrasonic vibration (output: 20 W, frequency: 20 kHz) is applied to the toner for 1 min, an attachment rate of the titanium oxide attached to the toner particles is ≥75 wt.% of that before applying the ultrasonic vibration, an attachment rate of the silica is ≤85 wt.% of that before applying the ultrasonic vibration, and the attachment rate of the titanium oxide is higher than that of the silica. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供具有良好的充电性能和调色剂的电荷累积性能并且没有在载体等上使用的调色剂的显影剂和调色剂,并且在感光体上成膜,以提供显影剂和调色剂适应性 涉及一种低温定影系统,并具有良好的抗偏移性,同时保持可清洁性,并提供一种图像形成装置和图像形成方法。 解决方案:在包括至少调色剂颗粒和无机细颗粒的静电图像显影用调色剂中,无机细颗粒由至少两种无机细颗粒组成,并且至少包含二氧化硅和氧化钛作为无机细颗粒 。 当超声波振动(输出:20W,频率:20kHz)施加到调色剂1分钟时,附着在调色剂颗粒上的氧化钛的附着率为施加超声波振动之前的附着率的75% 在施加超声波振动之前二氧化硅的附着率≤85重量%,氧化钛的附着率高于二氧化硅。 版权所有(C)2006,JPO&NCIPI
    • 9. 发明专利
    • Image forming method and process cartridge
    • 图像形成方法和过程盒
    • JP2006039229A
    • 2006-02-09
    • JP2004219246
    • 2004-07-27
    • Ricoh Co Ltd株式会社リコー
    • ASAHINA YASUOIWAMOTO YASUTAKASUGIURA HIDEKIKOBAN AKIHIROMATSUOKA SONOOICHIKAWA TOMOYUKISAITO TAKUYANAKAYAMA SHINYASAKATA KOICHIMOCHIZUKI MASARUUCHINOKURA OSAMUNAKAJIMA HISASHISASAKI FUMIHIRO
    • G03G15/08G03G5/08G03G9/08G03G9/087G03G9/09G03G15/01
    • PROBLEM TO BE SOLVED: To provide an image forming method which makes it possible to obtain good color images stably for a long period of time. SOLUTION: The image forming device has a process of electrostatically charging the surface of an electrostatic latent image carrier, a process of of forming an electrostatic latent image thereon, and a process of developing the electrostatic latent image by toner, wherein the toner image formed on the electrostatic latent image carrier is transferred onto a transfer member in a transfer process and then the electrostatic latent image carrier is cleaned so as to be ready for the next formation of the electrostatic latent image and the toner image is transferred to the final transfer member and thereafter the toner image is fixed by applying heat and pressure thereto by a fixing process. In the above image forming method, the toner is composed of color toners of four colors; yellow, magenta, cyan, and black, each containing at least a binder resin, an external additive, and a colorant. The toner of the each color contains the external additive composed of a combination of at least silica and titanium oxide and the silica/titanium oxide ratio of the toners of the one to the three colors lower in the electrostatic charge quantity prior to the addition of the external additive is greater than the ratio of the toners of the remaining three colors to the one color. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种能够长时间稳定地获得良好的彩色图像的图像形成方法。 解决方案:图像形成装置具有对静电潜像载体的表面进行静电充电的工艺,其上形成静电潜像的工艺以及通过调色剂显影静电潜像的处理,其中调色剂 形成在静电潜像载体上的图像在转印过程中转印到转印部件上,然后清洁静电潜像载体以准备下一次形成静电潜像,并将调色剂图像转印到最终 转印部件,此后通过定影处理对其施加热和压力来固定调色剂图像。 在上述图像形成方法中,调色剂由四种颜色的调色剂组成; 黄色,品红色,青色和黑色,各自至少含有粘合剂树脂,外部添加剂和着色剂。 每种颜色的调色剂包含由至少二氧化硅和氧化钛的组合组成的外部添加剂,并且在加入之前的静电电荷量中的一种至三种颜色的调色剂的二氧化硅/氧化钛比例较低 外部添加剂大于剩余三种颜色的调色剂与一种颜色的比例。 版权所有(C)2006,JPO&NCIPI
    • 10. 发明专利
    • Electrostatic charge image developing toner, manufacturing method, image forming apparatus, and process cartridge
    • 静电充电图像开发调色剂,制造方法,图像形成装置和工艺盒
    • JP2006039023A
    • 2006-02-09
    • JP2004215696
    • 2004-07-23
    • Ricoh Co Ltd株式会社リコー
    • NAKAYAMA SHINYAASAHINA YASUOSUGIURA HIDEKIKOBAN AKIHIROUCHINOKURA OSAMUNAKAJIMA HISASHIICHIKAWA TOMOYUKISAITO TAKUYASAKATA KOICHIIWAMOTO YASUTAKAMOCHIZUKI MASARU
    • G03G9/08G03G5/08G03G9/087G03G9/10G03G15/20
    • PROBLEM TO BE SOLVED: To provide an electrostatic charge image developing toner which is good in cleaning performance for a long period of time, reduces embedment in an external additive in toner surface, and is good in transfer efficiency and with which a full-color image of high image quality can be reproduced, a developer, an image forming apparatus using the same, and a process cartridge. SOLUTION: The electrostatic charge image developing toner contains the external additive having a binder resin, a colorant, first inorganic particulates and second inorganic particulates, wherein the primary particle diameter of the first inorganic particulates is 50 to 300 nm, the primary particle diameter of the second inorganic particulates is 50 to 300 nm, and when the contents of the first inorganic particulates and the second inorganic particulates are respectively defined as Xa and Xbwt%, and the residual amounts of the first inorganic particulates and the second inorganic particulates remaining in the toner after undergoing an ultrasonic treatment for one minute respectively as Ya and Ybwt%, Ya/Xa and By/Xb are ≥80% to ≤90%, and ≥70% to ≤95%. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供长时间清洗性能良好的静电电荷图像显影调色剂,减少了在调色剂表面的外部添加剂中的嵌入,并且转印效率好,并且充分 可以再现高图像质量的彩色图像,显影剂,使用其的图像形成装置和处理盒。 解决方案:静电荷图像显影调色剂含有具有粘合剂树脂,着色剂,第一无机颗粒和第二无机颗粒的外部添加剂,其中第一无机颗粒的初级粒径为50至300nm,初级颗粒 第二无机微粒的直径为50〜300nm,第一无机微粒和第二无机微粒的含量分别定义为Xa和Xbwt%时,残留的第一无机微粒和第二无机微粒的残留量 在Ya和Ybwt%超声处理1分钟后的调色剂中,Ya / Xa和By / Xb分别为≥80%〜≤90%,≥70%〜≤95%。 版权所有(C)2006,JPO&NCIPI