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11. 发明专利

JP2008276269A Method for forming full-color image and full-color image forming apparatus 审中-公开
标题翻译：用于形成全彩色图像和全彩色图像形成装置的方法
公开(公告)号：JP2008276269A
公开(公告)日：2008-11-13
申请号：JP2008209829
申请日：2008-08-18
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUGIURA HIDEKI , MOCHIZUKI MASARU , IWAMOTO YASUTAKA , ASAHINA YASUO , UMEMURA KAZUHIKO , ICHIKAWA TOMOYUKI , NAKAYAMA SHINYA , UCHIUMI TOMOKO , SAKATA KOICHI
IPC分类号： G03G9/08 , G03G5/08 , G03G9/087
CPC分类号： G03G9/08782 , G03G9/0825
摘要： PROBLEM TO BE SOLVED: To provide a toner excellent in long-term storage stability by controlling a dispersed state of wax near the toner surface and improving not only anti-hot-offset properties and to render the fixing properties into favorable but also blocking resistance. SOLUTION: The toner contains at least a binder resin, a colorant and a wax, wherein a wax content is 3 to 21 mass% of the total mass of the toner as a value obtained by expressing absorbed heat quantity of the wax measured by a DSC (differential scanning calorimetry) method in term of mass. The toner has a peak intensity ratio of (P 2850 /P 828 ) of 0.01 to 0.40 between a peak (2,850 cm -1 ) originating in the wax and a peak (828 cm -1 ) originating in the binder resin measured by an FTIR-ATR (Fourier transform infrared attenuated total reflection) method, as a value which defines the amount of the wax present in a region from the surface of a toner particles to a depth of 0.3 μm, and at least part of the wax is present as a plurality of independent wax dispersed particles included in the toner particles. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通过控制调色剂表面附近的蜡的分散状态，提供长期保存稳定性优异的调色剂，不仅提高耐热胶印性，并且使定影性能变好，抗阻性。调色剂含有至少一种粘合剂树脂，着色剂和蜡，其中蜡含量为调色剂总质量的3〜21质量％，作为通过表示所测得的蜡的吸收热量而得到的值通过DSC（差示扫描量热法）测定质量。调色剂的峰值强度比（P 2850 / P 828 ）在起始峰值（2,850厘米 -1 ）之间为0.01至0.40 在蜡中和通过FTIR-ATR（傅立叶变换红外衰减全反射）法测定的起始于粘合剂树脂的峰（828cm×SP> -1 ）作为定义蜡量的值存在于从调色剂颗粒的表面到0.3μm的深度的区域中，并且蜡的至少一部分作为包含在调色剂颗粒中的多个独立的蜡分散颗粒存在。版权所有（C）2009，JPO＆INPIT

12. 发明专利

JP2008065009A Method for producing toner, and toner 有权
标题翻译：生产墨粉和墨粉的方法
公开(公告)号：JP2008065009A
公开(公告)日：2008-03-21
申请号：JP2006242287
申请日：2006-09-07
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： WATANABE YOICHIRO , OTANI SHINJI , NORIKANE YOSHIHIRO , IWAMOTO YASUTAKA , SHIDARA YASUSADA
IPC分类号： G03G9/087 , B01J2/04 , G03G9/08
摘要： PROBLEM TO BE SOLVED: To provide toner particles having low temperature fixability and hot-offset resistance, and also having the uniform dispersibility of particle sizes. SOLUTION: In the method, a toner composition liquid obtained by dissolving and/or dispersing a toner composition at least comprising a resin, a coloring agent, a releasing agent and a graft polymer at least composed of a polyolefin resin and a vinyl based resin into a solvent is released from through holes, and is converted into droplets, so as to produce toner particles. The toner composition liquid is fed to a storage part, and, while exciting the toner composition liquid by a vibration means at least in contact with the storage part via the storage part, the toner composition liquid is released from a plurality of the through holes provided at the storage part into a granulation space. The toner composition liquid is passed through a columnar state into a constricted state, so as to be converted into droplets, and the droplets are changed into solid particles in the granulation space. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供具有低定影性和耐热粘合性的调色剂颗粒，并且还具有均匀的粒度分散性。解决方案：在该方法中，通过将至少包含树脂，着色剂，脱模剂和至少由聚烯烃树脂和乙烯基树脂构成的接枝聚合物的调色剂组合物溶解和/或分散得到的调色剂组合物液体从溶剂中释放出的基于树脂的树脂从通孔中释放出来并转化为液滴，从而产生调色剂颗粒。调色剂组合物液体被供给到存储部分，并且通过经由存储部分至少与储存部分接触的振动装置激发调色剂组合物液体时，调色剂组合物液体从设置的多个通孔中释放在储存部分进入造粒空间。调色剂组合物液体通过柱状状态变成收缩状态，以便转化为液滴，并且在造粒空间中将液滴变成固体颗粒。版权所有（C）2008，JPO＆INPIT

13. 发明专利

JP2007322926A Image forming apparatus, image forming method and process cartridge 有权
标题翻译：图像形成装置，图像形成方法和处理盒
公开(公告)号：JP2007322926A
公开(公告)日：2007-12-13
申请号：JP2006155239
申请日：2006-06-02
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： WATANABE YOICHIRO , IWAMOTO YASUTAKA , SHIDARA YASUSADA
IPC分类号： G03G9/087 , G03G9/09 , G03G9/10 , G03G15/00 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus in which excellent low-temperature fixability, offset resistance, durability, grindability, and storage stability are ensured, and which can suppress emission of a foul odor and allows formation of high-quality images over a long period of time. SOLUTION: The image forming apparatus comprises an electrostatic latent image carrier, a charging means, an exposure means, a developing means, a transfer means and a fixing means, wherein a binder resin in a toner used contains a polyester-based resin (A) and a polyester-based resin (B) having a softening point higher than that of the polyester-based resin (A) by ≥10°C. The polyester-based resin (A) is a resin derived from fumaric acid/maleic acid modified rosin having a polyester unit obtained by condensation polymerization of an alcohol component and a carboxylic acid component containing at least one of fumaric acid modified rosin and maleic acid modified rosin, and the polyester-based resin (B) is a resin derived from (meth)acrylic acid modified rosin having a polyester unit obtained by condensation polymerization of an alcohol component and a carboxylic acid component containing (meth)acrylic acid modified rosin. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供一种图像形成装置，其中确保了优异的低温定影性，抗偏移性，耐久性，可磨性和储存稳定性，并且可以抑制臭味的发射，高质量的图像很长一段时间。图像形成装置包括静电潜像载体，充电装置，曝光装置，显影装置，转印装置和固定装置，其中所用调色剂中的粘合剂树脂含有聚酯基树脂（A）和软化点高于聚酯类树脂（A）的聚酯类树脂（B）≥10℃。聚酯类树脂（A）是由富马酸/马来酸改性松香得到的树脂，其具有通过醇成分和含有富马酸改性松香和马来酸改性的至少一种的羧酸成分缩聚得到的聚酯单元松香，聚酯类树脂（B）是具有通过醇成分和含有（甲基）丙烯酸改性松香的羧酸成分的缩聚得到的具有聚酯单元的（甲基）丙烯酸改性松香衍生的树脂。版权所有（C）2008，JPO＆INPIT

14. 发明专利

JP2007310329A Image forming apparatus and image forming method 审中-公开
标题翻译：图像形成装置和图像形成方法
公开(公告)号：JP2007310329A
公开(公告)日：2007-11-29
申请号：JP2006158087
申请日：2006-06-07
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： WATANABE YOICHIRO , IWAMOTO YASUTAKA , SHIDARA YASUSADA
IPC分类号： G03G9/087 , G03G9/08 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus in which excellent low-temperature fixability is ensured, neither surface staining nor blocking is caused and service life of a developer is extended, and by which high-quality images can be formed over a prolonged period of time without emitting a foul odor, and to provide an image forming method. SOLUTION: The image forming apparatus comprises at least an electrostatic latent image carrier, an electrostatic latent image forming means, a developing means to form a visible image by development with a two-component developer comprising a magnetic carrier and toner, a transfer means and a fixing means. The developing means comprises a developer carrier and a layer thickness regulating member. A distance between the layer thickness regulating member and the developer carrier is 0.3-1.0 mm. The toner contains at least a polyester resin prepared by condensation polymerization of an alcohol component and a carboxylic acid component containing refined rosin and a colorant, and the content of particles having a circle-equivalent diameter of 0.6-2.0 μm in the toner is ≤40% by number. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供确保优异的低温定影性的图像形成装置，既不会引起表面污染也不产生阻塞，并且显影剂的使用寿命延长，并且可以形成高质量的图像并且不会产生恶臭，并提供图像形成方法。解决方案：图像形成装置至少包括静电潜像载体，静电潜像形成装置，通过用包含磁性载体和调色剂的双组分显影剂显影形成可见图像的显影装置，转印手段和固定手段。显影装置包括显影剂载体和层厚调节构件。层厚调节构件和显影剂载体之间的距离为0.3-1.0mm。调色剂至少含有通过醇组分和含有精制松香和着色剂的羧酸组分的缩聚制备的聚酯树脂，调色剂中圆当量直径为0.6-2.0μm的颗粒的含量为≤40 ％的数量。版权所有（C）2008，JPO＆INPIT

15. 发明专利

JP2007292869A Image forming apparatus, image forming method and process cartridge 有权
标题翻译：图像形成装置，图像形成方法和过程盒
公开(公告)号：JP2007292869A
公开(公告)日：2007-11-08
申请号：JP2006118087
申请日：2006-04-21
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IWAMOTO YASUTAKA , WATANABE YOICHIRO , SHIDARA YASUSADA
IPC分类号： G03G9/087 , G03G15/08 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus, an image forming method and a process cartridge which is excellent in fixing performance, does not cause color change over the long-term use and can form an extremely high-quality image free from abnormal images such as density degradation and surface staining by using toner which is excellent in low temperature fixing property, hot offset resistance and storage property and can reduce the generation of bad odor too. SOLUTION: The image forming apparatus comprises at least: an electrostatic latent image carrier; a charging means; an exposure means; a development means; a transfer means; and a fixing means, wherein the toner contains at least a binder resin and colorants, and the binder resin comprises a polyester resin made by polycondensating an alcohol component containing an aliphatic polyvalent alcohol and a carboxylic acid component containing (meth)acrylic acid modified rosin. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供固定性能优异的图像形成装置，图像形成方法和处理盒，不会导致长期使用时的颜色变化并且可以形成极高质量的图像通过使用低温定影性，耐热粘合性和保存性优异的调色剂，不会产生异常图像，例如密度劣化和表面染色，并且还可以减少不良气味的产生。解决方案：图像形成装置至少包括：静电潜像载体; 充电方式; 曝光手段; 发展手段; 转让手段; 和固定装置，其中调色剂至少含有粘合剂树脂和着色剂，并且粘合剂树脂包括通过使含有脂肪族多元醇的醇成分和含有（甲基）丙烯酸改性松香的羧酸成分缩聚而制成的聚酯树脂。版权所有（C）2008，JPO＆INPIT

16. 发明专利

JP2007292862A Image forming apparatus and method, and process cartridge 有权
标题翻译：图像形成装置和方法以及处理盒
公开(公告)号：JP2007292862A
公开(公告)日：2007-11-08
申请号：JP2006118049
申请日：2006-04-21
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SHIDARA YASUSADA , IWAMOTO YASUTAKA , WATANABE YOICHIRO
IPC分类号： G03G9/087 , G03G15/02 , G03G15/08 , G03G15/09 , G03G15/16 , G03G15/20 , G03G21/10
摘要： PROBLEM TO BE SOLVED: To form an image of extremely high quality having excellent fixing property, no change in the tone for long-term use, and free from abnormal images such as decrease in density and contamination on the base by using a toner that is excellent in low temperature fixing property, storage property and offset resistance and reduces generation of odor. SOLUTION: An image forming apparatus is disclosed that comprises at least an electrostatic latent image carrier, a charging means, an exposing means, a developing means, a transferring means and a fixing means, wherein the toner contains at least a binder resin and a colorant, and the binder resin contains a polyester resin produced by condensation-polymerization of an alcohol component and a carboxylic acid component containing a maleic acid modified rosin having a maleic acid modification rate of 30 to 105. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了形成具有优异定影性的极高质量的图像，长期使用的色调不变，并且没有异常图像，例如基底上的密度和污染的降低，通过使用具有优异的低温定影性，保存性和耐反印性并减少气味产生的调色剂。解决方案：公开了一种图像形成装置，其至少包括静电潜像载体，充电装置，曝光装置，显影装置，转印装置和固定装置，其中调色剂至少含有粘合剂树脂和着色剂，并且粘合剂树脂含有通过醇组分和含有马来酸改性速率为30至105的马来酸改性松香的羧酸组分的缩聚制备的聚酯树脂。版权所有（C））2008，JPO＆INPIT

17. 发明专利

JP2007033773A Toner for image formation and image forming apparatus 审中-公开
标题翻译：图像形成和图像形成装置的调色剂
公开(公告)号：JP2007033773A
公开(公告)日：2007-02-08
申请号：JP2005215831
申请日：2005-07-26
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： MATSUMOTO KEIKO , IWAMOTO YASUTAKA , SAWADA TOYOSHI
IPC分类号： G03G9/087 , G03G9/08
摘要： PROBLEM TO BE SOLVED: To provide a toner free of trouble in storage of a fixed image, particularly a toner free of trouble in image storage immediately after double-sided printing, and an image forming apparatus, as well as to provide a toner which fixes at low temperature, can ensure hot offset resistance and blocking resistance, and does not cause deterioration of developability and transferability due to faulty dispersion of constituents of the toner. SOLUTION: The toner contains at least a crystalline polyester and an amorphous polyester as a binder resin and further contains an inorganic nucleation agent. The toner has a peak with an amount of absorbed heat of ≥1.0 J/g originating in the crystalline polyester on an endothermic curve in first temperature up measured with a differential scanning calorimeter, and the endothermic peak has an amount of absorbed heat corresponding to 40 to COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了提供在固定图像的存储中无故障的调色剂，特别是在双面打印之后立即进行图像存储的故障的调色剂和图像形成装置，以及提供一种在低温下固定的调色剂可以确保耐热粘合性和抗粘连性，并且不会由于调色剂组分的错误分散而导致显影性和转印性的劣化。调色剂至少包含结晶聚酯和非晶聚酯作为粘合剂树脂，并且还含有无机成核剂。调色剂在用差示扫描量热计测量的第一温度下，在吸热曲线上产生结晶聚酯的吸收热量为≥1.0J/ g的峰，并且吸热峰具有对应于40的吸收热量到第二次升温的第一次的100％。在用于读取原始图像的图像读取部分和用于在记录纸张上形成记录图像的成像部分之间准备作为内部纸张喷射部分的空间的内部纸张排出部分结构的图像形成装置中使用调色剂该装置的主单元壳体。版权所有（C）2007，JPO＆INPIT

18. 发明专利

JP2006201714A Toner for electrostatic image development, image forming apparatus and image forming method 有权
标题翻译：用于静电图像开发，图像形成装置和图像形成方法的调色剂
公开(公告)号：JP2006201714A
公开(公告)日：2006-08-03
申请号：JP2005015993
申请日：2005-01-24
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： UCHINOKURA OSAMU , NAKAJIMA HISASHI , KOBAN AKIHIRO , SAITO TAKUYA , MATSUOKA SONOO , ASAHINA YASUO , SUGIURA HIDEKI , IWAMOTO YASUTAKA , MOCHIZUKI MASARU , NAKAYAMA SHINYA , SAKATA KOICHI , ICHIKAWA TOMOYUKI , SASAKI FUMIHIRO
IPC分类号： G03G9/087 , G03G5/08
摘要： PROBLEM TO BE SOLVED: To provide a developer which does not cause contamination of a developing sleeve and a photoreceptor by toner, adapts to a low-temperature fixing system, has good offset resistance, contaminates neither fixing device nor image, and can form a stable image, and to provide an electrophotographic image forming apparatus using the developer.
SOLUTION: A toner for electrostatic image development is provided in which toner base particles are formed from a dispersion obtained by dispersing an organic solvent phase in which at least a functional group-containing polyester resin and an unreactive resin have been dissolved, an active hydrogen-containing compound and a colorant in an aqueous medium phase in which resin fine particles have been dispersed and by bringing the functional group-containing polyester resin and the active hydrogen-containing compound into an extension reaction and/or a crosslinking reaction.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供不会使显影套筒和感光体被调色剂污染的显影剂，适应于低温定影系统，具有良好的抗偏移性，既不影响定影装置也不污染图像，并且可以形成稳定的图像，并提供使用显影剂的电子照相图像形成装置。提供了一种用于静电图像显影的调色剂，其中调色剂基础颗粒由通过分散其中至少含有官能团的聚酯树脂和非反应性树脂已经溶解的有机溶剂相而得到的分散体形成，在分散有树脂细颗粒的水性介质相中的含活性氢的化合物和着色剂，并使含官能团的聚酯树脂和含活性氢的化合物进行延伸反应和/或交联反应。版权所有（C）2006，JPO＆NCIPI

19. 发明专利

JP2006184297A Toner for electrophotography and image forming apparatus 有权
标题翻译：电子摄影和图像形成装置的调色剂
公开(公告)号：JP2006184297A
公开(公告)日：2006-07-13
申请号：JP2003175895
申请日：2003-06-20
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NAKAYAMA SHINYA , MOCHIZUKI MASARU , IWAMOTO YASUTAKA , ASAHINA YASUO , UMEMURA KAZUHIKO , SUGIURA HIDEKI , NAKAJIMA HISASHI , ICHIKAWA TOMOYUKI , UCHIUMI TOMOKO , SAKATA KOICHI
IPC分类号： G03G9/087 , G03G5/08 , G03G9/08 , G03G15/02 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a toner having a sharp charge amount distribution and excellent flowability, giving property image density and extremely little background smear, capable of forming stable images without image blurs, dust and transferring omission against any of transferring media, in particular, responding to a low temperature fixing system while keeping cleaning property even when repeatedly used for a great number of sheets over a long period of time, having favorable anti-offset property without smearing a fixing device and images. SOLUTION: The toner is obtained by: dissolving or dispersing a toner composition containing a binder which comprises a modified polyester resin capable of reacting with a compound having at least an active hydrogen group, a colorant and a release agent, in an organic solvent; dispersing the toner composition solution or the dispersion liquid in an aqueous medium containing resin fine particles as well as subjecting to an elongation reaction; removing the organic solvent from the obtained dispersion liquid; washing; and drying. The toner internally contains at least one or more kinds of inorganic fine particles. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供具有尖锐的电荷量分布和优异的流动性的调色剂，赋予特性图像浓度和极少的背景涂片，能够形成稳定的图像，而没有图像模糊，灰尘和转印对任何转印介质的遗漏特别是即使在长时间重复使用大量纸张的同时保持清洁性能也能够适应低温定影系统，具有良好的抗偏移性而不污染定影装置和图像。调色剂是通过以下方式获得的：将含有能够与具有至少一个活性氢基团的化合物反应的改性聚酯树脂，着色剂和脱模剂的粘合剂的调色剂组合物溶解或分散在有机溶剂; 将调色剂组合物溶液或分散液分散在含有树脂微粒的水性介质中并进行伸长反应; 从所得分散液中除去有机溶剂; 洗涤; 并干燥。调色剂内部含有至少一种或多种无机细颗粒。版权所有（C）2006，JPO＆NCIPI

20. 发明专利

JP2006058502A Toner and developer for electrostatic image development, image forming apparatus, process cartridge using the same and image forming method 审中-公开
标题翻译：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
公开(公告)号：JP2006058502A
公开(公告)日：2006-03-02
申请号：JP2004238972
申请日：2004-08-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SAKATA KOICHI , MOCHIZUKI MASARU , SASAKI FUMIHIRO , ASAHINA YASUO , KOBAN AKIHIRO , MATSUOKA SONOO , SAITO TAKUYA , UCHINOKURA OSAMU , NAKAJIMA HISASHI , IWAMOTO YASUTAKA , SUGIURA HIDEKI , ICHIKAWA TOMOYUKI , NAKAYAMA SHINYA
IPC分类号： G03G9/08 , G03G15/20
摘要： 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
摘要翻译：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

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