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31. 发明专利

JP2004226667A Electrostatic charge image developing toner 有权
公开(公告)号：JP2004226667A
公开(公告)日：2004-08-12
申请号：JP2003014085
申请日：2003-01-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUGIYAMA KOSHIN , WATANABE SHINKO , YAMASHITA YUJI , WATANABE YOICHIRO , SAITO TAKUYA
IPC分类号： G03G9/08 , G03G9/087 , G03G9/09
摘要： PROBLEM TO BE SOLVED: To provide toner excellent in transfer efficiency, ensuring little residual toner after transfer, and giving a high-grade image. SOLUTION: The electrostatic charge image developing toner contains a modified polyester resin (i) obtained by reacting a modified polyester resin (A) to react with active hydrogen with an extender and/or a cross-linking agent (B), and an unmodified polyester resin (ii) as a toner binder. After dissolving or dispersing a toner composition containing the polyester resin (A) in an organic solvent, the extender and/or the cross-linking agent (B) is added. At this time, an increasing rate of viscosity of the resulting dispersion is 1,000-10,000 mPa s/min. COPYRIGHT: (C)2004,JPO&NCIPI

32. 发明专利

JP2004126160A Electrostatic charge image developing toner 有权
公开(公告)号：JP2004126160A
公开(公告)日：2004-04-22
申请号：JP2002289090
申请日：2002-10-01
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUGIYAMA KOSHIN , YAMASHITA YUJI , WATANABE YOICHIRO , SAITO TAKUYA , TAKADA TAKESHI , SUZUKI MASANORI
IPC分类号： G03G9/08 , G03G9/087 , G03G9/09
CPC分类号： G03G9/08764 , G03G9/0806 , G03G9/08755
摘要： PROBLEM TO BE SOLVED: To provide an electrostatic charge image developing toner excellent in stability of a charged state over a prolonged period of time, free of fogging and toner scattering, giving high image density as a toner for full color, having high saturation and excellent in transparency, light resistance, fading resistance, transferability and graininess, and also to provide a developer containing the toner, a container holding the toner, and an image forming method and apparatus using the toner. SOLUTION: The toner contains at least a colorant and is obtained by dissolving or dispersing a toner composition containing a modified polyester resin capable of urea bonding in an organic solvent, reacting the resulting solution or dispersion with a crosslinking agent and/or an extender in an aqueous medium containing fine resin particles, removing the solvent of the dispersion and carrying out washing, wherein the colorant is previously added as a master batch prepared by kneading with at least a resin and a pigment dispersant. COPYRIGHT: (C)2004,JPO

33. 发明专利

JP2004069937A Electrostatic charge image developing toner 审中-公开
公开(公告)号：JP2004069937A
公开(公告)日：2004-03-04
申请号：JP2002227900
申请日：2002-08-05
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUGIYAMA KOSHIN , SUZUKI MASANORI , YAMASHITA YUJI , WATANABE YOICHIRO , TAKADA TAKESHI , SAITO TAKUYA , MOCHIZUKI MASARU , IWAMOTO YASUTAKA , KOIKE TAKAYUKI
IPC分类号： G03G9/08 , G03G9/087 , G03G9/09
摘要： PROBLEM TO BE SOLVED: To provide electrostatic charge image developing toner whose electrification stability is excellent over a long term, with which high image density is obtained as full color toner without having surface fogging and toner scattering, whose saturation, transparency, light fastness and fading resistance are excellent and also whose cleaning property, transfer property and particle property are excellent, developer incorporating the toner, an image forming method using the toner and an image forming apparatus loading the toner. SOLUTION: The electrostatic charge developing toner is obtained by dissolving toner composition including modified polyester resin urea-coupled in organic solvent, making polyaddition reaction in a water medium, removing and cleaning the solvent of dispersed liquid and incorporates at least colorant, and the colorant incorporates at least compound shown by a general expression (1). Wherein, each R 1 to R 8 represents -H, -CH 3 , or -Cl. COPYRIGHT: (C)2004,JPO

34. 发明专利

JP2007072327A Method for manufacturing toner, and toner 审中-公开
标题翻译：制造调色剂和调色剂的方法
公开(公告)号：JP2007072327A
公开(公告)日：2007-03-22
申请号：JP2005261454
申请日：2005-09-09
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： MATSUOKA SONOO , KOBAN AKIHIRO , SAITO TAKUYA , KURODA NOBORU , TAKAHASHI HIROSHI
IPC分类号： G03G9/09 , G03G9/087
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a toner maintaining specified image quality by stabilizing the amount of a flocculating body to be produced to suppress the generation of particulates due to the destruction by a mechanical stress, preventing the degradation in smear fixing intensity particularly in halftone image during fixing and further reducing the variation in the average grain size of the toner and the grain size distribution thereof. SOLUTION: The method for manufacturing the toner comprises forming an organic phase containing a toner composition including at least a colorant and emulsifying or dispersing the organic phase in an aqueous medium to perform pelletization, in which the concentration of the impurity metal ions derived from the colorant in the aqueous medium is confined to ≤50 ppm. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决问题的方法：提供一种通过使待制造的絮凝体的量稳定化以抑制由于机械应力的破坏而产生的微粒而保持规定的图像质量的调色剂的制造方法，在固定期间特别是在半色调图像中涂抹固定强度，并进一步减少调色剂的平均粒度的变化及其粒度分布。解决方案：制造调色剂的方法包括形成含有至少包含着色剂的调色剂组合物的有机相，并将有机相乳化或分散在水性介质中以进行造粒，其中衍生的杂质金属离子的浓度从水性介质中的着色剂限制在≤50ppm。版权所有（C）2007，JPO＆INPIT

35. 发明专利

JP2006208946A Method for manufacturing toner for electrostatic charge image development, toner for electrostatic charge image development, developer, image forming apparatus, image forming method, and process cartridge 有权
标题翻译：用于制造静电电荷图像开发的调色剂的方法，用于静电电荷图像开发的调色剂，开发者，图像形成装置，图像形成方法和过程盒
公开(公告)号：JP2006208946A
公开(公告)日：2006-08-10
申请号：JP2005023371
申请日：2005-01-31
申请人： Ricoh Co Ltd , Sanyo Chem Ind Ltd , 三洋化成工業株式会社 , 株式会社リコー
发明人： MATSUOKA SONOO , MOCHIZUKI MASARU , SASAKI FUMIHIRO , UCHINOKURA OSAMU , SAITO TAKUYA , TAKIGAWA TADAO , YAHIRO SHUHEI , NODA HIDETOSHI
IPC分类号： G03G9/087 , G03G9/08 , G03G9/097
摘要： PROBLEM TO BE SOLVED: To provide a toner responding to an image forming system which requires a higher speed and higher reliability, having high charging ability and little toner portion with weak charges or inverted charges, capable of forming an image with less contamination on a base even after output of images in several ten thousands sheets, hardly causing scattering in an apparatus and resulting picture quality with sufficient image density, and to provide a method for manufacturing the toner. SOLUTION: The method for manufacturing a toner for electrostatic charge image development includes steps of granulating an organic solvent composition containing at least a binder resin and a colorant in an organic solvent in an aqueous medium and then externally adding a charge controlling agent in a wet state, dehydrating and filtering, and drying. A process interval period (t) (hour) from the dehydration and filtration step to the drying step, and a storage environment temperature (T) (°C) of a cake after dehydration in the process interval period satisfy relational formula (1):t≤80e (-0.07T) and/or (2), wherein Δtm defined by tm-t(m-1) represents a time difference on measuring a m-th temperature, and T(t=tm) represents a temperature T at the time tm, and T is in the range of 5≤T COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种响应于需要更高速度和更高可靠性的图像形成系统的调色剂，具有高充电能力和小的具有弱电荷或反向电荷的调色剂部分，能够形成具有较少污染的图像即使在输出几万张图像之后，几乎不会在装置中产生散射，并且产生具有足够图像密度的图像质量，并且提供了制造调色剂的方法。制造静电荷图像显影用调色剂的方法包括以下步骤：将含有至少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造粒，然后在外部添加电荷控制剂湿润状态，脱水和过滤，并干燥。从脱水过滤步骤到干燥步骤的处理间隔时间（t）（小时）和处理间隔期间的脱水后的滤饼的储存环境温度（℃）（℃）满足关系式（1）：其中由tm-t（m-1）定义的Δtm表示测量第m个温度的时间差，T（t） = tm）表示时间tm的温度T，T在5≤T<50的范围内。版权所有（C）2006，JPO＆NCIPI

36. 发明专利

JP2006208422A Electrostatic charge image developing toner, developer, image forming method, image forming apparatus, and process cartridge using the same 审中-公开
标题翻译：静电充电图像开发调色剂，开发者，图像形成方法，图像形成装置和使用其的处理盒
公开(公告)号：JP2006208422A
公开(公告)日：2006-08-10
申请号：JP2005016366
申请日：2005-01-25
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KOBAN AKIHIRO , MOCHIZUKI MASARU , MATSUOKA SONOO , SAITO TAKUYA
IPC分类号： G03G9/09 , G03G9/08 , G03G9/087 , G03G9/097
摘要： PROBLEM TO BE SOLVED: To provide a toner which eliminates an excess maldistribution to the surface of a pigment and with which image quality of sufficient image density can be obtained while developability, transferability, and fixability are assured, an image forming apparatus, an image forming method, and a process cartridge, and to provide an image forming apparatus which is sufficiently high in the electrostatic chargeability of the toner, is satisfactory in the rise property of the electrostatic charge, is less in toner spent to carriers, etc., even if outputting of the tens of thousand sheets of the images is performed, can maintain high electrostatic chargeability and fluidity, reduces scumming (fogging), and makes it possible to obtain the substantial image density, an image forming method, and a process cartridge. SOLUTION: The electrostatic charge image developing toner comprises host particles containing at least a colorant and resin and having a form of carrying an electrostatic charge control component on the surface and an inorganic oxide particulates. The colorant is 0.08 to 0.12 μm in number average primary particle diameter and is the organic pigment of the following structure existing in the toner. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决问题的方案：提供一种消除了对颜料表面的过量分布不均匀的调色剂，并且确保了可显影性，转印性和定影性的图像浓度的图像质量，图像形成装置，图像形成方法和处理盒，并且为了提供足够高的调色剂的静电荷性的图像形成装置，静电荷的上升性能是令人满意的，对于载体等而花费的调色剂少。即使进行了数十万张图像的输出，也能够保持高的静电充电性和流动性，减少浮渣（起雾），可以获得实质的图像浓度，图像形成方法和处理盒。解决方案：静电荷图像显影调色剂包含至少含有着色剂和树脂的主体颗粒，并且具有在表面上带有静电电荷控制组分的形式和无机氧化物颗粒。着色剂的初级粒径为0.08〜0.12μm，是调色剂中存在的以下结构的有机颜料。版权所有（C）2006，JPO＆NCIPI

37. 发明专利

JP2006195106A Toner for image formation, developer for image formation and image forming method 有权
标题翻译：用于图像形成的图像，图像形成和图像形成方法的开发者
公开(公告)号：JP2006195106A
公开(公告)日：2006-07-27
申请号：JP2005005856
申请日：2005-01-13
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NAKAYAMA SHINYA , MOCHIZUKI MASARU , UCHINOKURA OSAMU , ICHIKAWA TOMOYUKI , ASAHINA YASUO , KOBAN AKIHIRO , MATSUOKA SONOO , NAKAJIMA HISASHI , SAITO TAKUYA , SAKATA KOICHI , SASAKI FUMIHIRO
IPC分类号： G03G9/08 , G03G7/00 , G03G9/087 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a toner for image formation adaptable to a low temperature fixing system even on transfer paper having a rough surface, excellent in smear resistance and capable of achieving high image quality. SOLUTION: The toner for image formation is used in an image forming method in which the toner is fixed on a transfer material by heat and pressure and the transfer material has a smoothness of ≤40 s. The toner includes at least a binder resin and a colorant, (i) the toner is fixed at a temperature at which a storage modulus G' is in the range of 0.3×10 4 -1.0×10 4 Pa and a loss modulus G" is in the range of 0.2×10 4 -0.7×10 4 Pa, (ii) tanδ(=G"/G') has a maximum value in the range of 90-110°C and the value is in the range of 1.2-1.7, and (iii) a storage modulus G'(180) at 180°C is ≥0.2×10 4 . COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：即使在具有粗糙表面的转印纸上，也提供适用于低温定影系统的图像形成用调色剂，具有优异的耐污染性并且能够实现高图像质量。图像形成用调色剂用于通过热和压力将调色剂固定在转印材料上的成像方法，并且转印材料的平滑度≤40秒。调色剂至少包含粘合剂树脂和着色剂，（i）将调色剂固定在储能模量G'在0.3×10 -4×10 -3范围内的温度下， SP> 4 Pa，损耗模量G“在0.2×10 4 -0.7×10 4 Pa的范围内，（ii）tanδ（= G“/ G'）的最大值在90-110℃的范围内，该值在1.2-1.7的范围内，（iii）180℃下的储能模量G'（180）≥0.2 ×10 4 。版权所有（C）2006，JPO＆NCIPI

38. 发明专利

JP2006126266A Image forming method 审中-公开
标题翻译：图像形成方法
公开(公告)号：JP2006126266A
公开(公告)日：2006-05-18
申请号：JP2004310873
申请日：2004-10-26
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ASAHINA YASUO , IWAMOTO YASUTAKA , SUGIURA HIDEKI , KOBAN AKIHIRO , ICHIKAWA TOMOYUKI , SAITO TAKUYA , NAKAYAMA SHINYA , SAKATA KOICHI , MOCHIZUKI MASARU , UCHINOKURA OSAMU , NAKAJIMA HISASHI
IPC分类号： G03G9/08 , G03G9/087 , G03G9/09 , G03G15/08 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide an image forming method superior in resolution and transfer properties by enabling a cleaning process to attain good residual toner cleaning even in a blade cleaning method even when using color polymerization toner in which a developer uses spherical toner by a two-component developer in an electrophotographic image forming method. SOLUTION: In the image forming method including electrification, formation of electrostatic latent images, a developing process by the two-component developer, a transfer process, a toner image fixing process, and a cleaning process, toner particles comprises at least a binding resin, a colorant, a charge control agent, and an external additive. The external additive added to the toner particles contained in an initial developer in the developing process contains larger particle diameters than those of the external additive added to supply toner. The total amount of the external additive is added equally to toner particles to be supplied or more. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供分辨率和转印性能优异的图像形成方法，即使在使用显影剂使用球形调色剂的彩色聚合调色剂的情况下，即使在刮片清洁方法中也能够进行清洁处理以获得良好的残留调色剂清洁通过电子照相成像方法中的双组分显影剂。解决方案：在包括带电，形成静电潜像的图像形成方法，通过双组分显影剂的显影处理，转印过程，调色剂图像定影处理和清洁过程中，调色剂颗粒至少包含粘合树脂，着色剂，电荷控制剂和外部添加剂。在显影过程中添加到初始显影剂中的调色剂颗粒中所添加的外部添加剂的颗粒直径大于添加到调色剂中的外部添加剂的粒径。外部添加剂的总量相同地添加到待供应的调色剂颗粒中。版权所有（C）2006，JPO＆NCIPI

39. 发明专利

JP2006053353A Full color toner fixing method 审中-公开
标题翻译：全彩色固定方式
公开(公告)号：JP2006053353A
公开(公告)日：2006-02-23
申请号：JP2004234979
申请日：2004-08-12
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： WATANABE YOICHIRO , YAMASHITA YUJI , SUGIYAMA KOSHIN , OTANI SHINJI , SAITO TAKUYA
IPC分类号： G03G9/087 , G03G9/08 , G03G9/09 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To impart a moderate image gloss and good color reproducibility in full color toner fixing, to reduce a gloss change of images associated with a fixing temperature change, and to uniformly and stably obtain the gloss of images. SOLUTION: A full color toner image forming method includes a fixing step using toner in which a binder resin has a weight average molecular weight of 8,000-50,000 and a glass transition temperature of 40-55°C and in which a thermoplastic resin having a weight average molecular weight ≥2 times that of the binder resin and a glass transition temperature higher than that of the binder resin by ≥5°C is made to be present near the surface, and using a fixing means by a pressure heating system in which a surface pressure is 10-100 N/cm 2 . COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了在全色调色剂定影中赋予适度的图像光泽和良好的颜色再现性，以减少与定影温度变化相关的图像的光泽变化，并且均匀且稳定地获得图像的光泽。全色调色剂图像形成方法包括使用调色剂的定影步骤，其中粘合剂树脂的重均分子量为8,000-50,000，玻璃化转变温度为40-55℃，其中热塑性树脂重均分子量为粘合剂树脂的重均分子量≥2倍，玻璃化转变温度高于粘合剂树脂≥5℃的玻璃化转变温度存在于表面附近，并通过加压系统其中表面压力为10-100N / cm 2 SP / 2。版权所有（C）2006，JPO＆NCIPI

40. 发明专利

JP2006023428A Electrostatic charge image developing toner 有权
标题翻译：静电充电图像显影剂
公开(公告)号：JP2006023428A
公开(公告)日：2006-01-26
申请号：JP2004200141
申请日：2004-07-07
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SAITO TAKUYA , YAMASHITA YUJI , WATANABE YOICHIRO , OTANI SHINJI , SUGIYAMA KOSHIN , KANO TOSHIHIKO , TAKIGAWA TADAO , NODA HIDETOSHI , YAHIRO SHUHEI
IPC分类号： G03G9/087 , G03G9/08
摘要： PROBLEM TO BE SOLVED: To provide a developer which has improved cleaning properties, and with which, even if many recording papers are repeatedly used over a long period, proper image density can be obtained and the stain of surface is extremely little, further, to provide a developer which has a sharp distribution in an electrostatic charge amount, does not contaminate a charging device, a developing device, a photoreceptor and an intermediate transferring body and can form images of high quality, and to provide a toner which copes with a low temperature fixing system, has satisfactory offset resistance and does not stain a fixing device and images. SOLUTION: The electrostatic charge image developing toner is obtained by dissolving or dispersing at least a resin or a resin precursor comprising a monomer, a coloring agent and a metal oxide and solvent-dispersed body comprising one or more kinds of metal oxides into an organic phase, dispersing the solution or dispersed liquid into a water base medium, thereafter, removing the organic solvent and the water base medium and performing cleaning and drying. The metal oxide and solvent-dispersed body is either a sol body or a wetting gel, and its pH reaches 2 to 6 by equal amount dilution with water. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种具有改进的清洁性能的显影剂，并且即使长时间反复使用许多记录纸，也可以获得适当的图像浓度并且表面的污渍极少，另外，为了提供一种具有静电荷量分布明显的显影剂，不会使充电装置，显影装置，感光体和中间转印体污染，并且可以形成高质量的图像，并且提供可以处理的调色剂具有低温定影系统，具有令人满意的抗偏移性，并且不会污染定影装置和图像。解决方案：静电荷图像显影调色剂通过将至少包含单体，着色剂和金属氧化物的树脂或树脂前体和包含一种或多种金属氧化物的溶剂分散体溶解或分散到有机相，将溶液或分散液分散在水基介质中，然后除去有机溶剂和水基介质，进行清洗和干燥。金属氧化物和溶剂分散体是溶胶体或润湿凝胶，其pH通过与水等量稀释至2至6。版权所有（C）2006，JPO＆NCIPI

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