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    • 1. 发明专利
    • Image forming apparatus and head cleaning method
    • 图像形成装置和头部清洁方法
    • JP2011189710A
    • 2011-09-29
    • JP2010059931
    • 2010-03-16
    • Ricoh Co Ltd株式会社リコー
    • SEO MANABUTSUKAMOTO TAKEOHASEGAWA YOSHINOUSUI YUMASAKUMA HIDEOMIORITO TAKESHISUZUKI RYOTA
    • B41J2/165B41J2/01
    • PROBLEM TO BE SOLVED: To provide an inkjet image forming apparatus forming an image by giving a recording liquid such as ink to an intermediate transfer body by a head, which enables head cleaning to be carried out in a comparatively easy configuration. SOLUTION: The image forming apparatus uses: heads 61Y, 61M, 61C, and 61BK, having nozzles 61b discharging a recording liquid; an intermediate transfer body 37 given with recoding liquids discharged by the heads 61Y, 61M, 61C, and 61BK; a contact and release means for making a nozzle part 61d having the nozzles 61b for the heads 61Y, 61M, 61C, and 61BK contact and release the intermediate transfer body 37; and a controlling means for making the intermediate transfer body 37 carry out cleaning of the nozzle part 61d by relatively moving the nozzle part 61d and the intermediate transfer body 37 and thereby making the intermediate transfer body 37 slide and contact the nozzle part 61d while maintaining the state where the nozzle part 61d and the intermediate transfer body 37 are abutting on each other by the contact and release means. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:为了提供一种通过用头给中间转印体提供油墨等记录液形成图像​​的喷墨图像形成装置,这使得头部清洁能够以相对容易的结构进行。 解决方案:图像形成装置使用具有喷射记录液体的喷嘴61b的头61Y,61M,61C和61BK; 由头61Y,61M,61C和61BK排出的记录液体的中间转印体37; 用于制造具有用于头61Y,61M,61C和61BK的喷嘴61b的喷嘴部分61d的接触和释放装置接触并释放中间转印体37; 以及用于使中间转印体37通过相对移动喷嘴部分61d和中间转印体37进行喷嘴部分61d的清洁的控制装置,从而使中间转印体37滑动并接触喷嘴部分61d,同时保持 喷嘴部61d和中间转印体37通过接触释放装置抵接的状态。 版权所有(C)2011,JPO&INPIT
    • 3. 发明专利
    • Electrostatic latent image carrier, process cartridge, image forming apparatus and image forming method
    • 静电影像载体,工艺盒,图像形成装置和图像形成方法
    • JP2008129452A
    • 2008-06-05
    • JP2006316102
    • 2006-11-22
    • Ricoh Co Ltd株式会社リコー
    • TODA NAOHIROYASUDA OSAMUORITO TAKESHI
    • G03G5/147
    • PROBLEM TO BE SOLVED: To provide an electrostatic latent image carrier having a crosslinked surface layer with high scratch and wear resistances and good electrical characteristics and a photosensitive layer, and capable of achieving higher image quality over a long period of time. SOLUTION: The electrostatic latent image carrier has at least the crosslinked surface layer and the photosensitive layer on a support, wherein the crosslinked surface layer contains a reaction product of a tri- or higher functional radically polymerizable compound having no charge transporting structure and a monofunctional radically polymerizable compound having a charge transporting structure, and at least one compound selected from among 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline, 2- (4-t-butylphenyl) -5- (4-biphenylyl) -1,3,4-oxadiazole, 3- (4-t-butylphenyl) -4-phenyl-5- (4-biphenylyl) -1,2,4-triazole and bis (2-methyl-8-quinolinolato) (p-phenylphenolato) aluminum. COPYRIGHT: (C)2008,JPO&INPIT
    • 解决的问题:提供一种具有高耐擦伤性和良好的电气特性以及感光层的交联表面层的静电潜像载体,并能够长时间地实现更高的图像质量。 解决方案:静电潜像载体在载体上至少具有交联表面层和感光层,其中交联表面层含有不具有电荷输送结构的三官能以上的自由基聚合性化合物的反应产物和 具有电荷输送结构的单官能自由基聚合性化合物和至少一种选自2,9-二甲基-4,7-二苯基-1,10-菲咯啉,2-(4-叔丁基苯基)-5-( 4-联苯基)-1,3,4-恶二唑,3-(4-叔丁基苯基)-4-苯基-5-(4-联苯基)-1,2,4-三唑和双(2-甲基-8- (对苯基苯酚)铝。 版权所有(C)2008,JPO&INPIT
    • 4. 发明专利
    • Electrophotographic photoreceptor, method for manufacturing the same, and image forming apparatus and process cartridge using the photoreceptor
    • 电子照相机,其制造方法以及使用光电转换器的图像形成装置和工艺盒
    • JP2007193086A
    • 2007-08-02
    • JP2006010938
    • 2006-01-19
    • Ricoh Co Ltd株式会社リコー
    • YAMASHITA YASUYUKITODA NAOHIROORITO TAKESHI
    • G03G5/00G03G5/047G03G5/05G03G5/06G03G5/14G03G15/08
    • PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor excellent in charging performance and capable of performing stable image formation without generating an abnormal image such as scumming or density unevenness even in long-term repetitive use, a method for manufacturing the same, and an image forming apparatus and a process cartridge equipped with the electrophotographic photoreceptor. SOLUTION: The electrophotographic photoreceptor is manufactured by sequentially disposing on a conductive support 1 an intermediate layer 2 formed by applying and drying a coating liquid for an intermediate layer comprising an inorganic pigment, a binder resin and a solvent comprising at least ethylene glycol monoisopropyl ether and a photosensitive layer 3 formed, e.g., by using a dispersion comprising a binder resin, a solvent and titanyl phthalocyanine crystals. The resultant electrophotographic photoreceptor is installed in an electrophotographic apparatus or a process cartridge. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:为了提供充电性能优异的电子照相感光体,即使在长期重复使用中也能够不产生诸如浮渣或浓度不均匀的异常图像而能够进行稳定的图像形成,其制造方法, 以及配备有电子照相感光体的图像形成装置和处理盒。 解决方案:电子照相感光体通过在导电性载体1上依次设置中间层2而制成,该中间层2通过涂布和干燥包含无机颜料,粘合剂树脂和至少包含乙二醇的溶剂的中间层的涂布液而形成 单异丙基醚和感光层3,例如通过使用包含粘合剂树脂,溶剂和钛酞菁晶体的分散体形成。 所得到的电子照相感光体安装在电照相设备或处理盒中。 版权所有(C)2007,JPO&INPIT
    • 6. 发明专利
    • Electrophotographic photoreceptor, image forming apparatus, full-color image forming apparatus and process cartridge
    • 电子照相机,图像形成装置,全彩色图像形成装置和工艺盒
    • JP2007079505A
    • 2007-03-29
    • JP2005271015
    • 2005-09-16
    • Ricoh Co Ltd株式会社リコー
    • ORITO TAKESHIKURIMOTO EIJISHIMOYAMA KEISUKENIIMI TATSUYAKAWAMURA SHINICHI
    • G03G5/06G03G5/00G03G5/10G03G5/14
    • PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor which ensures less variation in electrostatic properties and occurrence of few abnormal images in repetitive use of an image forming apparatus and under variation of the environment in which the image forming apparatus is set, and to provide the image forming apparatus and a full-color image forming apparatus capable of outputting always stable images and a process cartridge having high convenience of handling by using the electrophotographic photoreceptor. SOLUTION: The electrophotographic photoreceptor has at least a photosensitive layer on a conductive support, wherein the conductive support surface has been subjected to anodic oxidation coating treatment, and the electrophotographic photoreceptor has an electron transport agent represented by formula (1) in the photosensitive layer. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种电子照相感光体,其确保在重复使用图像形成装置时以及在其中设置图像形成装置的环境的变化下静电特性的变化小和少量异常图像的发生,以及 以提供能够输出始终稳定的图像的图像形成装置和能够输出总是稳定的图像的全色图像形成装置以及通过使用电子照相感光体而具有高操作方便性的处理盒。 解决方案:电子照相感光体在导电载体上至少有一个感光层,其中导电支撑表面已进行阳极氧化涂覆处理,并且电子照相感光体具有由式(1)表示的电子传输剂 感光层。 版权所有(C)2007,JPO&INPIT
    • 7. 发明专利
    • Coating liquid, electrophotographic photoreceptor, image forming device, and process cartridge for the image forming device
    • 涂装液体,电子照相机,图像形成装置和图像形成装置的处理盒
    • JP2006219658A
    • 2006-08-24
    • JP2005293236
    • 2005-10-06
    • Ricoh Co Ltd株式会社リコー
    • KONDO MAIKONIIMI TATSUYATODA NAOHIROORITO TAKESHI
    • C09D177/00C09D4/02C09D5/00C09D7/12C09D161/28C09D167/08G03G5/00G03G5/047G03G5/05G03G5/06G03G5/07G03G5/14G03G5/147G03G21/00
    • PROBLEM TO BE SOLVED: To provide a coating liquid containing an N-alkoxymethylated nylon, capable of giving excellent evenness to a film, even when the coating liquid stored for a long period is used, to provide an electrophotographic photoreceptor capable of preventing formation of an abnormal image, such as scumming and black dots, even when repeatedly used for a long period, and capable of stably giving a good image, even under a high-temperature and high-humidity environment or a low-temperature and low-humidity environment, to provide an image forming device equipped with the electrophotographic photoreceptor, and to provide a process cartridge. SOLUTION: This coating liquid contains the N-alkoxymethylated nylon, wherein an alkyl amine is contained in the N-alkoxymethylated nylon in an amount of 15-100 ppm. The electrophotographic photoreceptor is formed by sequentially laminating at least an electric discharge-blocking layer, a moire-inhibiting layer, and a photoreceptor layer on an electrically-conductive support material in this order, wherein the electric discharge-blocking layer is prepared by using the coating liquid. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:即使使用长时间储存​​的涂布液,为了提供能够赋予膜均匀性优异的N-烷氧基甲基化尼龙的涂布液,可提供能够防止 形成异常图像,例如浮渣和黑点,即使在长时间重复使用的情况下,即使在高温高湿环境或低温低温环境下也能够稳定地获得良好的图像, 提供配备有电子照相感光体的图像形成装置,并提供处理盒。 解决方案:该涂布液含有N-烷氧基甲基化尼龙,其中N-烷氧基甲基化尼龙中含有15-100ppm的烷基胺。 电子照相感光体依次依次层叠至导电性支持体上的放电阻挡层,莫尔条纹抑制层和感光体层,其中,放电阻挡层使用 涂液 版权所有(C)2006,JPO&NCIPI
    • 9. 发明专利
    • Ink-jet image forming apparatus
    • INK-JET图像形成装置
    • JP2012143942A
    • 2012-08-02
    • JP2011003226
    • 2011-01-11
    • Ricoh Co Ltd株式会社リコー
    • USUI YUMATSUKAMOTO TAKEOSAKUMA HIDEOMISEO MANABUYAMASHITA HIROYUKIORITO TAKESHISUZUKI RYOTA
    • B41J2/01B41M5/00
    • PROBLEM TO BE SOLVED: To provide an ink-jet image forming apparatus that forms a high-quality images of high concentration and high fixability and less feathering, bleeding, and beading on various recording materials without using consumable products other than ink, such as reaction liquid/treatment liquid as much as possible.SOLUTION: In accordance with an image signal input, the temperature of a surface 11b of an intermediate transfer body is heated to a first temperature range set in advance by a temperature adjusting means. A recording head houses an ink composition containing a solvent and a thermo-responsive polymer of which association state is changed by thermal stimulation of the intermediate transfer body. Discharged ink droplets 23 are in a sol state in which the thermo-responsive polymer has been completely dissolved. The droplets land on an intermediate transfer roller and are immediately heated to the first temperature range, and entire ink dots 24 are changed to a gel state.
    • 要解决的问题:提供一种喷墨图像形成装置,其不使用油墨以外的消耗品,形成高浓度和高定影性的高质量图像,并且在各种记录材料上形成较少的羽化,渗色和珠粒, 如反应液/处理液尽可能多。 解决方案:根据图像信号输入,中间转印体的表面11b的温度被加热到由温度调节装置预先设置的第一温度范围。 记录头容纳含有溶剂和热响应聚合物的油墨组合物,其通过中间转印体的热刺激改变缔合状态。 排出的墨滴23处于其中热响应性聚合物已经完全溶解的溶胶状态。 液滴落在中间转印辊上并立即加热到第一温度范围,并且整个墨点24变为凝胶状态。 版权所有(C)2012,JPO&INPIT
    • 10. 发明专利
    • Image forming apparatus and image forming method
    • 图像形成装置和图像形成方法
    • JP2012139966A
    • 2012-07-26
    • JP2011000748
    • 2011-01-05
    • Ricoh Co Ltd株式会社リコー
    • SUZUKI RYOTAORITO TAKESHIYAMASHITA HIROYUKITSUKAMOTO TAKEOSAKUMA HIDEOMISEO MANABUUSUI YUMA
    • B41J2/01
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus for performing image formation by applying a recording liquid to an intermediate transfer unit, capable of suppressing bleeding without use of a treatment liquid, a powder or the like except the recording liquid while securing the discharging performance of recording liquid from the head; and an image forming method using the same.SOLUTION: The image forming apparatus includes: an intermediate transfer unit 37 with a conductive surface, on which a conductive recording liquid discharged from nozzles 61a provided on heads 61Y, 61M, 61C, 61BK (hereinafter, head 61) is applied; a voltage application means 33 which applies a voltage between the intermediate transfer unit 37 and the head 61 to electrolyze the conductive recording liquid which is discharged from the head 61 to bridge the gap between the head 61 and the intermediate transfer unit 37; a control means 40 which reduces the application voltage at a time when the diameter of the narrowest portion of the conductive recording liquid in such a bridging state becomes 3 μm for controlling the discharge by the voltage applied to the conductive recording liquid by the voltage application.
    • 要解决的问题:提供一种图像形成装置,用于通过向中间转印单元施加记录液来进行图像形成,能够在不使用除记录液体之外的处理液,粉末等的同时抑制渗色,同时 确保记录液体从头部排出的性能; 以及使用该图像形成方法的图像形成方法。 解决方案:图像形成装置包括:具有导电表面的中间转印单元37,其上施加从设置在头61Y,61M,61C,61BK(以下称为头61)上的喷嘴61a排出的导电记录液; 电压施加装置33,其在中间转印单元37和头61之间施加电压,以电解从头部61排出的导电记录液体,以桥接头部61和中间转印单元37之间的间隙; 控制装置40,其在这种桥接状态的导电记录液体的最窄部分的直径变为3μm时降低施加电压,用于通过施加电压施加到导电记录液体的电压来控制放电。 版权所有(C)2012,JPO&INPIT