专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明专利

JP2005141058A Electrostatic charge image developing toner and image forming method 有权
标题翻译：静电充电图像开发墨粉和图像形成方法
公开(公告)号：JP2005141058A
公开(公告)日：2005-06-02
申请号：JP2003378209
申请日：2003-11-07
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SAWADA TOYOSHI , SHIRAISHI KEIKO , NAGAYAMA MASASHI , AOKI MITSUO , HASEGAWA HISAMI , SHU HIYO
IPC分类号： G03G9/08 , G03G9/083 , G03G9/087 , G03G9/09 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide black toner and a developer for a nonmagnetic two-component developing system having a satisfactory coloring degree and blackness and having excellent safety and low temperature fixability, and to provide toner excellent in fixability even with a fixing device using a low surface pressure thin roller and a fixing method.
SOLUTION: In the toner containing at least a binder resin, a black colorant and a blue colorant, a titanium-containing iron oxide compound having a saturation magnetization of ≤50 emu/g, L* value of ≤15 and a* and b* each within a range of 1.0-9.0 is contained as the black colorant in an amount of 15-35 wt.% and the blue colorant is contained in an amount of 0.5-2.0 wt.%.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：为了提供具有令人满意的着色度和黑度并且具有优异的安全性和低温定影性的非磁性双组分显影系统的黑色调色剂和显影剂，并且即使在固定时也提供定影性优异的调色剂使用低表面压力薄辊的装置和固定方法。解决方案：在至少含有粘合剂树脂，黑色着色剂和蓝色着色剂的调色剂中，饱和磁化强度为≤50emu/ g，L *值≤15的含钛氧化铁化合物和a * 并且以1.0〜9.0的范围内的b *为15〜35重量％的黑色着色剂，蓝色着色剂的含量为0.5〜2.0重量％。版权所有（C）2005，JPO＆NCIPI

82. 发明专利

JP2005115352A Toner for forming color image and toner kit 审中-公开
标题翻译：用于形成彩色图像和墨粉盒的墨粉
公开(公告)号：JP2005115352A
公开(公告)日：2005-04-28
申请号：JP2004262083
申请日：2004-09-09
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： MASUDA MINORU , AOKI MITSUO , HASEGAWA HISAMI , SHU HIYO
IPC分类号： G03G9/08 , C08G63/85 , G03G9/087 , G03G9/09
摘要： PROBLEM TO BE SOLVED: To provide a toner binder which makes toner particles free of sticking and agglomeration while maintaining excellent low-temperature fixability of a polyester toner binder, anti-hot-offset properties and a high gloss image, by using a polyester resin formed in the presence of a specified catalyst, in a toner for forming a color image used for electrophotography, etc. SOLUTION: The toner used in a full color image forming system comprises at least a colorant and a binder resin based on a polyester resin, wherein the polyester resin is formed by a polycondensation ester reaction in the presence of at least one titanium-containing catalyst selected from the group consisting of halogenated titanium, titanium diketone enolates, titanium carboxylates, titanyl carboxylates and salts of titanyl carboxylates. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供调色剂粘合剂，其使得调色剂颗粒没有粘附和附聚，同时保持聚酯调色剂粘合剂的优异的低温定影性，抗热偏移性和高光泽图像，通过使用在特定催化剂存在下形成的聚酯树脂，用于形成用于电子照相术的彩色图像的调色剂等。解决方案：全色图像形成系统中使用的调色剂至少包含着色剂和基于粘合剂的粘合剂树脂在聚酯树脂上，其中聚酯树脂通过缩聚酯反应在至少一种含钛催化剂存在下形成，所述催化剂选自卤化钛，钛二酮烯醇酯，羧酸钛，氧钛酸二甲酯和羧酸二甲酯的盐。版权所有（C）2005，JPO＆NCIPI

83. 发明专利

JP2005091883A Magnetic toner for electrostatic charge development and toner cartridge packed with the toner 审中-公开
标题翻译：用于静电充电开发的磁性调色剂和用墨粉盒包装的碳粉盒
公开(公告)号：JP2005091883A
公开(公告)日：2005-04-07
申请号：JP2003326388
申请日：2003-09-18
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SHU HIYO , TOMITA MASAMI , AOKI MITSUO , HASEGAWA HISAMI
IPC分类号： G03G9/08 , G03G9/083 , G03G9/087 , G03G9/097
摘要： PROBLEM TO BE SOLVED: To provide a magnetic toner (single-component type magnetic toner) for electrostatic charge image development by which a sufficiently uniform thin toner layer is formed on a toner transport member of a developing device, contamination of a photoreceptor is eliminated and the clear image faithful to an original is obtained and a toner cartridge packed with the toner. SOLUTION: The single-component type magnetic toner, containing a polycondensed polyester resin formed in the presence of a catalyst containing titanium of at least one kind selected from among a group consisting of titanium halogenide, titanium diketone enolate, titanium carboxylate, titanyl carboxylate, and titanyl carboxylate salt as a toner binder and a magnetic material is provided. Image formation is performed by packing such toner into the developing device. Also, the toner is used in the form of a toner cartridge packed with the toner, as need. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供用于静电荷图像显影的磁性调色剂（单组分型磁性调色剂），通过该磁性调色剂在显影装置的调色剂输送构件上形成足够均匀的薄调色剂层，感光体的污染并且获得忠实于原件的清晰图像，以及填充有调色剂的调色剂盒。解决方案：单组分型磁性调色剂含有在催化剂存在下形成的缩聚聚酯树脂，该催化剂含有选自卤化钛，钛二酮烯醇酯，羧酸钛，氧钛酸钛中的至少一种的至少一种羧酸盐和钛酸氧钛盐作为调色剂粘合剂，并提供磁性材料。通过将这种调色剂包装到显影装置中来进行图像形成。此外，根据需要，调色剂以包装有调色剂的调色剂盒的形式使用。版权所有（C）2005，JPO＆NCIPI

84. 发明专利

JP2005091881A Electrostatic charge image developing toner, method for forming image, and toner cartridge 有权
标题翻译：静电充电图像开发墨粉，形成图像的方法和墨粉盒
公开(公告)号：JP2005091881A
公开(公告)日：2005-04-07
申请号：JP2003326386
申请日：2003-09-18
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： AOKI MITSUO , HASEGAWA HISAMI , SHU HIYO
IPC分类号： G03G9/08 , G03G9/087 , G03G9/09
摘要： PROBLEM TO BE SOLVED: To provide toner which can be fixed at a low temperature even when a fixing device with less fixing energy for image formation is used, which has excellent fixing property and heat-resistant storage property and preferable magnetic characteristics, and to provide a method for forming an image and a toner cartridge using the toner. SOLUTION: The toner contains: a polycondensation polyester resin as a binder resin prepared in the presence of at least one kind of titanium-containing catalyst selected from a group consisting of halogenated titanium, titan diketone enolate, titanium carboxylate, carboxylic acid titanyl and titanyl carboxylate; and a black iron oxide compound as a colorant comprising a titanium component and an iron component, with 10 to 45 wt.% proportion of the titanium component is terms of Ti atoms to Fe atoms measured by a wavelength dispersion type X-ray fluorescent analyzer. The toner cartridge is charged with the above toner. An image is formed by an apparatus mounting a fixing device which is capable of low energy fixing by using the above toner. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：即使使用具有较低的成像固定能力的定影装置，即使具有优良的定影性和耐热储存性以及优选的磁特性，也能够提供可在低温下固定的调色剂，并提供使用该调色剂形成图像的方法和调色剂盒。调色剂包含：作为粘合剂树脂的缩聚聚酯树脂，其在至少一种含钛催化剂存在下制备，所述催化剂选自卤代钛，钛二酮烯醇酯，羧酸钛，羧酸氧钛和羧酸二甲酯; 和作为着色剂的黑色氧化铁化合物，其包含钛组分和铁组分，钛组分的10至45重量％的比例是通过波长分散型X射线荧光分析仪测量的Ti原子与Fe原子的关系。将墨粉盒充满上述墨粉。通过安装能够通过使用上述调色剂而能够低能量定影的定影装置的装置形成图像。版权所有（C）2005，JPO＆NCIPI

85. 发明专利

JP2004287241A Image forming method and image forming apparatus 审中-公开
标题翻译：图像形成方法和图像形成装置
公开(公告)号：JP2004287241A
公开(公告)日：2004-10-14
申请号：JP2003081156
申请日：2003-03-24
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KASAI TADASHI , SUZUKI HIROHARU , AOKI MITSUO , SHU HIYO , SOGA SETSUO , TAKAHASHI YUTAKA , FURUICHI YASUSHI
IPC分类号： G03G9/08 , G03G15/00 , G03G15/16 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide an electrophotographic image forming apparatus capable of reliably forming an image with density gradation, one which does not have a low-quality appearance. SOLUTION: The estimated average halftone granularity of the toner image after developing but before electrostatic transfer was set at ≤0.15 and the average halftone granularity of the toner image after fixing was set at ≤0.25. The average halftone granularity was found by measuring the granularity of a toner image at locations of different average brightness of 40-80 by means of a newly proposed specified formula, and averaging the measured values for which the average brightness is 40-80. The estimated average halftone granularity was obtained by estimating the average halftone granularity of the toner image on a photoreceptor 1 by means of a specified method. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供能够可靠地形成具有浓度梯度的图像的电子照相图像形成装置，其不具有低质量的外观。解决方案：显影后但静电转印前调色剂图像的估计平均半色调粒度设定为≤0.15，固定后调色剂图像的平均半色调粒度设定为≤0.25。通过新提出的规定公式测量不同平均亮度的位置处的调色剂图像的粒度，并且平均亮度为40-80的测量值，可以发现平均半色调粒度。通过用特定的方法估计感光体1上的调色剂图像的平均半色调粒度来获得估计的平均半色调粒度。版权所有（C）2005，JPO＆NCIPI

86. 发明专利

JP2004271881A Electrostatic charge image developing toner, toner cartridge, and method for fixing toner image 审中-公开
公开(公告)号：JP2004271881A
公开(公告)日：2004-09-30
申请号：JP2003062199
申请日：2003-03-07
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： AOKI MITSUO , HASEGAWA HISAMI , SHU HIYO , KURAMOTO SHINICHI , SAWADA TOYOSHI , NAGAYAMA MASASHI , SHIRAISHI KEIKO
IPC分类号： G03G9/08 , G03G9/083 , G03G9/087 , G03G9/09 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a toner and a fixing method excellent in fixability and hot storage resistance even in the case of a fixing device using a low surface pressure thin roller, and to provide a black colorant substitutable for carbon black. SOLUTION: The electrostatic charge image developing toner is used in a fixing device in which a toner image is heat-fixed by passing a support which supports the toner image between two rollers, the thickness of the fixing roller brought into contact with the toner image supporting surface is ≤1.0 mm, and surface pressure applied between the two rollers ((roller load)/(contact surface area)) is ≤1.5×10 5 Pa. The toner includes a resin, a wax and a colorant as essential components, wherein a black iron oxide compound including 10-45 wt.% (expressed in terms of Ti atoms) of a titanium compound based on the amount of Fe atoms is used as the colorant. COPYRIGHT: (C)2004,JPO&NCIPI

87. 发明专利

JP2004271859A Electrostatic charge image developing toner, process cartridge, and image forming apparatus 有权
公开(公告)号：JP2004271859A
公开(公告)日：2004-09-30
申请号：JP2003061947
申请日：2003-03-07
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SHU HIYO , AOKI MITSUO , HASEGAWA HISAMI , KURAMOTO SHINICHI , SAWADA TOYOSHI , NAGAYAMA MASASHI , SHIRAISHI KEIKO
IPC分类号： G03G9/08 , G03G9/083 , G03G9/087 , G03G9/09
摘要： PROBLEM TO BE SOLVED: To provide toner which reconciles low-temperature fixability with anti-hot-offset properties and can form a fog-free good image with good hot storage stability and productivity, and to provide a process cartridge using the toner and excellent in image quality, and an image forming apparatus with a contact charging device. SOLUTION: In the electrostatic charge image developing toner including resin components, a wax component and a colorant as essential components, the resin components are a nonlinear polymer resin (A), a linear polymer resin (B) and a resin (C) obtained by carrying out a condensation polymerization reaction and an addition polymerization reaction in the same reaction vessel in parallel with each other using a mixture including starting monomers of a condensation polymer resin and starting monomers of an addition polymer resin, wherein the resins (A), (B), (C) include at least the same polymer unit, and a black iron oxide compound including 10-45 wt.% (expressed in terms of Ti atoms) of a titanium compound based on the amount of Fe atoms is used as the colorant. COPYRIGHT: (C)2004,JPO&NCIPI

88. 发明专利

JP2004258320A Image forming apparatus 审中-公开
公开(公告)号：JP2004258320A
公开(公告)日：2004-09-16
申请号：JP2003049037
申请日：2003-02-26
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KASAI TADASHI , SHU HIYO , AOKI MITSUO , SUZUKI HIROHARU , FURUICHI YASUSHI , TAKAHASHI YUTAKA , WATANABE SHIGERU
IPC分类号： G03G9/087 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of suppressing both diffused transfer and graving to inconspicuous levels. SOLUTION: A roller with an elastic layer comprising an elastic material is used as a transfer roller 4 as a roller member. A device which electrostatically transfers a toner image by passing a transfer current of 6-60 [nA/mm 2 ] between the transfer roller 4 and a photoreceptor 1 while pressing the roller 4 on the photoreceptor 1 under a pressure of 0.01-1.6 [N/mm 2 ] is used as a transfer device using the transfer roller 4. A toner containing a modified polyester resin and manufactured by a polymerization method is specified to a user as a toner for forming a toner image. COPYRIGHT: (C)2004,JPO&NCIPI

89. 发明专利

JP2004077915A Image forming apparatus, transfer method, and transfer condition setting method 审中-公开
公开(公告)号：JP2004077915A
公开(公告)日：2004-03-11
申请号：JP2002239640
申请日：2002-08-20
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUZUKI HIROHARU , AOKI MITSUO , SHU HIYO , FURUICHI YASUSHI , WATANABE SHIGERU , KASAI TADASHI , TAKAHASHI YUTAKA
IPC分类号： G03G9/08 , G03G5/147 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of preventing the occurrence of transfer dust with high accuracy and obtaining an image having excellent sharpness. SOLUTION: A pressure of 1-10N/cm is applied between a photoreceptor 1 and a transfer roller 52, an elastic layer 52b is formed on the transfer roller 52, and a transfer bias current between the photoreceptor 1 and the transfer roller 52 is set to be 0.05 to 0.2μA/cm. Besides, the hardness of the elastic layer 52b is set to be 60 to 80°, the CTL layer of the OPC photoreceptor 1 is set to be 10 to 20μm and the electrostatic capacity is set to be ≥ 100PF/cm 2 . COPYRIGHT: (C)2004,JPO

90. 发明专利

JP2004069740A Image forming device 有权
公开(公告)号：JP2004069740A
公开(公告)日：2004-03-04
申请号：JP2002224627
申请日：2002-08-01
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FURUICHI YASUSHI , AOKI MITSUO , HIGUCHI HIROTO , NAKAYAMA SHINYA , KONDO MAIKO , SHU HIYO , SUZUKI HIROHARU , TAKAHASHI YUTAKA , KASAI TADASHI
IPC分类号： G03G9/08 , G03G15/16 , G03G15/20 , G03G15/24
摘要： PROBLEM TO BE SOLVED: To provide an image forming device in which toner deterioration caused by heat and damage in the device are avoided, an increase in the size of the device caused by the pressure of a transfer and simultaneous fixing system, fixing wrinkles and image fattening are avoided and also image deterioration caused by transfer dust is surely suppressed without using capsule toner. SOLUTION: A copying machine which is used as an image forming device is provided with a photosensitive body 1, a developing device 6, a transfer device 5 which is used to transfer a toner image formed on the body 1 using a transfer roller 52 onto a transfer material by heating and pressuring the image and a fixing device 7 which is used to fix the toner image being transferred on the transfer material. A heater 56, a temperature detecting device 57 and a temperature controller are provided to control the temperature of the roller 52 to a temperature range which is equal to or more than a toner glass transition temperature (Tg) and less than softening temperature (Tm) and is lower than the fixing temperature of the device 7. COPYRIGHT: (C)2004,JPO

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式