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1. 发明专利

JP2006133348A Magenta toner for electrostatic image development, toner cartridge and process cartridge 有权
标题翻译：静电图像发生器，墨粉盒和过程盒的MAGENTA TONER
公开(公告)号：JP2006133348A
公开(公告)日：2006-05-25
申请号：JP2004320116
申请日：2004-11-04
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SHU HIYO , AOKI MITSUO , MASUDA MINORU , HASEGAWA HISAMI
IPC分类号： G03G9/09 , G03G9/08 , G03G9/087
CPC分类号： G03G9/081 , G03G9/0819 , G03G9/08755 , G03G9/08795 , G03G9/08797 , G03G9/0902 , G03G9/091 , G03G9/092 , G03G9/09783
摘要： PROBLEM TO BE SOLVED: To provide a magenta toner for electrostatic image development excellent in low-temperature fixability, having hot offset resistance and hot storage resistance, satisfying both fixability and flying-off property of magenta toner in particular, and also ensuring product safety.
SOLUTION: In the magenta toner for electrostatic image development containing at least a binder resin and a colorant, a naphthol-based pigment having one of specific three structures including at least formula (1) is contained as the colorant, and the binder resin contains a polyester resin, at least a resin component of which contains an inorganic tin (II) compound as a catalyst.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供低温定影性优异的静电图像显影品种红色调色剂，具有耐热偏移性和耐热储存性，特别是满足品红色调色剂的定影性和脱落性，并且还确保产品安全。包含至少含有粘合剂树脂和着色剂的用于静电图像显影的品红色调色剂中，含有至少包含式（1）的特定三种结构之一的萘酚基颜料作为着色剂，粘合剂树脂含有至少含有无机锡（II）化合物作为催化剂的树脂成分的聚酯树脂。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2006047585A Full color toner and image forming method 有权
标题翻译：全彩色和图像形成方法
公开(公告)号：JP2006047585A
公开(公告)日：2006-02-16
申请号：JP2004227177
申请日：2004-08-03
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HASEGAWA HISAMI , AOKI MITSUO , MASUDA MINORU , SHU HIYO
IPC分类号： G03G9/087 , G03G9/08 , G03G9/09 , G03G9/097 , G03G15/08 , G03G15/20
CPC分类号： G03G9/08742 , G03G9/08702 , G03G9/08755 , G03G9/08797 , G03G9/097
摘要： PROBLEM TO BE SOLVED: To provide a color toner which has adequate image brightness, is further free from unequal brightness in the image, makes it possible to obtain saturation of colors, provides sufficient offset preventiveness even by a fixing method of not applying a release oil to a fixing roller or reducing a coating weight of the oil to an extremely small weight and simultaneously is free from the occurrence of toner aggregation, wax spending and filming though the wax is not contained, and is excellent in durability and grindability, and a fixing method and fixing device for fixing a color toner image to a recording medium, a container filled with the color toner, an image forming apparatus loaded with the container filled with the color toner, and image forming method. SOLUTION: The full color toner for image formation containing a polyester resin at least as a binder resin, a release agent, and a colorant contains, as the binder resin, further contains a hybrid resin component having a vinyl-based polymerization unit and a polyester-based unit and the content A of the hybrid resin and the content B of the release agent satisfy expression (1). COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供具有足够的图像亮度的彩色调色剂，在图像中进一步没有不均匀的亮度，可以获得颜色的饱和度，甚至通过不施加的定影方法提供足够的胶印预防性向定影辊的释放油或将油的涂布重量降低至非常小的重量，并且同时没有发生调色剂聚集，蜡消耗和成膜，尽管不含蜡，并且耐久性和可磨性优异，以及用于将彩色调色剂图像定影到记录介质的固定方法和定影装置，填充有彩色调色剂的容器，装载有彩色调色剂的容器的图像形成装置和图像形成方法。＆lt; P＆gt;解决方案：含有至少作为粘合剂树脂的聚酯树脂，脱模剂和着色剂的成像用全色调色剂含有作为粘合剂树脂的含有乙烯基类聚合单元的混合树脂成分和聚酯类单元，混合树脂的含量A和脱模剂的含量B满足式（1）。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2005241951A Image forming device, process cartridge, and toner used for the same 有权
标题翻译：图像形成装置，工艺盒和用于其的色粉
公开(公告)号：JP2005241951A
公开(公告)日：2005-09-08
申请号：JP2004051388
申请日：2004-02-26
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： MASUDA MINORU , AOKI MITSUO , SHU HIYO , SUGIURA HIDEKI , UCHIUMI TOMOKO
IPC分类号： G03G9/08 , G03G9/087 , G03G15/01 , G03G15/16 , G03G21/10
摘要： PROBLEM TO BE SOLVED: To provide an image forming device using toner which reduces the wear of a cleaning blade in the image forming device, assures the cleanability of the small-grain size and spherical toner and is less hindered in fixability by the toner after transfer. SOLUTION: The image forming device 100 comprises incorporating inorganic oxide of at least 90 to 300 nm at ≥0.4wt% into the toner and transferring the toner in such a manner that the content of the inorganic oxide of the toner after the transfer from a photoreceptor 1 to an intermediate transfer belt 6a attains a range from 75 to 95% with respect to the content of the inorganic oxide in the initial period of the toner. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供使用减少图像形成装置中的清洁刮板的磨损的调色剂的图像形成装置，确保小粒径和球形调色剂的清洁性，并且由于转印后的墨粉。解决方案：图像形成装置100包括将≥0.4重量％的至少90至300nm的无机氧化物掺入调色剂中，并以这样的方式转印调色剂，使得转印后调色剂的无机氧化物的含量从感光体1到中间转印带6a相对于调色剂初始阶段的无机氧化物的含量达到75〜95％的范围。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2005099690A Toner, developer, container with toner, image forming apparatus and image forming method 审中-公开
标题翻译：调色剂，开发者，带调色剂的容器，图像形成装置和图像形成方法
公开(公告)号：JP2005099690A
公开(公告)日：2005-04-14
申请号：JP2004134717
申请日：2004-04-28
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： AOKI MITSUO , SHU HIYO , SUZUKI HIROHARU , FURUICHI YASUSHI , SOGA SETSUO , KASAI TADASHI , TAKAHASHI YUTAKA
IPC分类号： G03G9/08 , G03G9/097 , G03G15/08 , G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a method for forming an image by which deterioration of an image due to fixing can be prevented, and to provide toner to be used for the above image forming method. SOLUTION: The image forming method includes steps of forming an electrostatic latent image, developing, transferring and fixing, and the area Sb (μm 2 ) of the scattered toner around normal dots on a recording medium after the transferring step, and the area Sa (μm 2 ) of the scattered toner in an image after the fixing step satisfy: (1) 0.90≤Sa/Sb≤4.0; (2) 500 μm 2 >Sb; and (3) 2,000 μm 2 >Sa. The areas Sb (μm 2 ) and Sa (μm 2 ) are obtained by taking each 2×2 dot pattern after transferring and fixing steps as a 1,770 μm×2,530 μm image by using a super-depth profile measurement microscope, adding all areas of the scattered toner separated from the dots in the binary data of the image, and dividing the total area by the total number of dots. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于形成图像的方法，由此可以防止由于定影导致的图像劣化，并提供用于上述图像形成方法的调色剂。解决方案：图像形成方法包括在记录介质上形成静电潜像，显影，转印和固定以及散射调色剂周围正常点的区域Sb（μm 2 ）在固定步骤之后的图像中的散射调色剂的面积Sa（μm 2 ）满足：（1）0.90≤Sa/Sb≤4.0; （2）500μm 2 > Sb; 和（3）2,000μm 2 > Sa。通过在传送和固定步骤后的每个2×2点图案作为1,770μm×2,530μm图像获得区域Sb（μm 2 ）和Sa（μm 2 ）通过使用超深度轮廓测量显微镜，将从点的分散的所有区域添加到图像的二进制数据中，并将总面积除以总点数。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2005092079A 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：JP2005092079A
公开(公告)日：2005-04-07
申请号：JP2003328334
申请日：2003-09-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FURUICHI YASUSHI , AOKI MITSUO , SHU HIYO , SOGA SETSUO , SUZUKI HIROHARU , TAKAHASHI YUTAKA , KASAI TADASHI
IPC分类号： G03G9/08 , G03G15/00 , G03G15/08 , G03G15/16 , G03G21/00
摘要： PROBLEM TO BE SOLVED: To provide an image forming method by which an image of high image quality of ≤0.25 in graininess after fixing can be obtained and an image forming apparatus.
SOLUTION: The contact pressure of a transfer roller (not shown in Figure) and a photoreceptor is so set that the ratio of the dot area of the toner image on the photoreceptor after development and the dot area after transfer to a paper sheet (recording material) (in Figure, the width L/d of the image) is 0.8 to 1.1. The developing device is so constituted that the toner height on the photoreceptor after the development is ≤3 times the average toner grain size. As a result, transfer dirt and a void are prevented and the graininess after the fixing is specified to ≤0.25, by which the image of high image quality is obtained.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种图像形成方法，通过该图像形成方法可以获得定影后的颗粒度下的高图像质量≤0.25的图像和图像形成装置。
解决方案：转印辊（图中未示出）和感光体的接触压力被设定为使得显影后的感光体上的调色剂图像的点面积与转印到纸张上的点区域之间的比率（记录材料）（图中，图像的宽度L / d）为0.8〜1.1。显影装置的结构使显影后感光体上的调色剂高度为平均调色剂颗粒尺寸的3倍。结果，防止转印污物和空隙，并且定影后的颗粒度被规定为≤0.25，由此获得高图像质量的图像。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2005091696A Electrostatic latent image developing toner, toner cartridge, process cartridge, image forming method, and image forming apparatus 有权
标题翻译：静电图像发展墨粉，墨粉盒，工艺盒，图像形成方法和图像形成装置
公开(公告)号：JP2005091696A
公开(公告)日：2005-04-07
申请号：JP2003324361
申请日：2003-09-17
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HASEGAWA HISAMI , MASUDA MINORU , SHU HIYO , AOKI MITSUO
IPC分类号： G03G9/08 , G03G9/087 , G03G9/097 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide an electrostatic latent image developing toner which has excellent fixation properties and hot offset resistance and yields a high-grade image free of fogging. SOLUTION: A binder resin for the electrostatic latent image developing toner is a polycondensated polyester resin formed in the presence of a catalyst containing titanium of at least one kind selected from a group consisting of titanium halide, titanium diketone enolate, titanium carboxylate, titanyl carboxylate, and a titanyl carboxylate salt and contains a high softening point polyester having a softening point of 125 to 150°C and a low softening point polyester of a softening point of 85 to 105°C, wherein a difference of the softening points of the high softening point polyester and that of the low softening point polyester is 20 to 60°C. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种静电潜像显影调色剂，该静电潜像显影调色剂具有优异的定影性和耐热偏移性，并产生不起雾的高等级图像。用于静电潜像显影调色剂的粘合剂树脂是在包含钛的催化剂存在下形成的缩聚聚酯树脂，所述催化剂含有选自卤化钛，二醇烯醇化钛，羧酸钛，钛酸二烷基酯和羧酸氧钛盐，并且含有软化点为125〜150℃的高软化点聚酯和软化点为85〜105℃的低软化点聚酯，其中软化点的软化点高软化点聚酯和低软化点聚酯的高软化点聚酯为20〜60℃。版权所有（C）2005，JPO＆NCIPI

7. 发明专利

JP2004361852A Image forming apparatus 审中-公开
公开(公告)号：JP2004361852A
公开(公告)日：2004-12-24
申请号：JP2003162726
申请日：2003-06-06
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FURUICHI YASUSHI , AOKI MITSUO , SHU HIYO , SUZUKI HIROHARU , SOGA SETSUO , KASAI TADASHI , TAKAHASHI YUTAKA
IPC分类号： G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus which improves the image quality by setting transfer bias at a proper value.
SOLUTION: In the image forming apparatus of an electrophotographic system possessing a contact transfer member 51, the transfer bias applied to the contact transfer member 51 is set within a range of ±10 of a value where "granularity×(-0.16)+MTF(mean transfer function)×0.016" of an output image becomes maximum.
COPYRIGHT: (C)2005,JPO&NCIPI

8. 发明专利

JP2004286866A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2004286866A
公开(公告)日：2004-10-14
申请号：JP2003076334
申请日：2003-03-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： MIZUISHI HARUJI , ISHIBASHI MIKIO , TANAKA MASARU , TAMAKI SHINJI , MIZUSAWA HIROSHI , AOKI MITSUO , SHU HIYO , HASEGAWA MAKOTO
IPC分类号： G01N21/47 , G03G9/08 , G03G9/087 , G03G15/00 , G03G15/08 , G03G21/00 , G03G21/10
摘要： PROBLEM TO BE SOLVED: To prevent the image density unevenness due to the uneven wear of an image carrier surface while maintaining less spacing and lower cost with an image forming apparatus using a developer which is specified in the wax content of a toner to 0[wt%] or over and 5.0[wt%] or under and contains a low-temperature fixing toner. SOLUTION: The low-temperature fixing toner which contains at least a binder resin, coloring matter, and wax and in which the value of the molecular weight distribution by a GPC determined by the THF soluble content of the resin constituting the toner has at least one peak between 1,000 and 10,000 and the half value width of the distribution is ≤15,000 in molecular weight is used as the toner constituting a two-component developer used for a printer. Further, the wax content of the toner is specified to 0[wt%] or over and 5.0[wt%] or under. As a result, the occurrence of the image density unevenness is averted even if a mechanism or the like to oscillate a cleaning blade 41 in an axial direction of a photoreceptor drum 1 is not freshly disposed. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了防止由于图像载体表面的不均匀磨损而导致的图像浓度不均匀性，同时通过使用在调色剂的蜡含量中指定的显影剂的图像形成装置保持较小间隔并降低成本， 0 [wt％]以上，5.0 [wt％]以下，含有低温定影调色剂。解决方案：至少含有粘合剂树脂，着色剂和蜡的低温定影调色剂，其中通过由构成调色剂的树脂的THF可溶物含量确定的GPC的分子量分布的值具有作为构成用于打印机的双组分显影剂的调色剂，使用1000至10,000之间的至少一个峰，并且分子量的半值宽度≤15,000。此外，调色剂的蜡含量规定为0 [wt％]以上且5.0 [wt％]以下。结果，即使没有新鲜地设置在感光鼓1的轴向上振荡清洁刮板41的机构等，也避免了图像浓度不均匀的发生。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2004279528A Image forming apparatus 审中-公开
公开(公告)号：JP2004279528A
公开(公告)日：2004-10-07
申请号：JP2003067852
申请日：2003-03-13
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： MIZUSAWA HIROSHI , HASEGAWA MAKOTO , ISHIBASHI MIKIO , TAMAKI SHINJI , TANAKA MASARU , SHU HIYO , AOKI MITSUO , MIZUISHI HARUJI
IPC分类号： G03G9/08 , G03G5/10 , G03G9/087 , G03G15/00 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a low-cost and space-saving image forming apparatus which can prevent adjustment defect of a photosensor due to wear of a photoreceptor over time. SOLUTION: The image forming apparatus is mounted with a small-diameter organic photoreceptor 1 whose external diameter is ≤ψ40 mm and also equipped with a reflection type photosensor 10 which detects the amount of toner sticking on the photoreceptor surface; and a threshold is initially provided for an output adjustment value of the reflection type photosensor 10 and when the quantity of light emission in output adjustment exceeds a specified value for a certain period, the threshold is varied to the output adjustment value. Further, a two-component developer and a carrier are used, the developer employing toner for development having ≤10 μm in mean particle size and ≤5.0 wt.% in wax addition amount and principally contains at least polyester resin, a coloring agent, and wax as binding resin. COPYRIGHT: (C)2005,JPO&NCIPI

10. 发明专利

JP2004191485A Transfer method and device, and image forming method and apparatus 审中-公开
公开(公告)号：JP2004191485A
公开(公告)日：2004-07-08
申请号：JP2002356790
申请日：2002-12-09
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FURUICHI YASUSHI , AOKI MITSUO , SHU HIYO , SUZUKI HIROHARU , WATANABE SHIGERU , KASAI TADASHI , TAKAHASHI YUTAKA
IPC分类号： G03G9/08 , F16C13/00 , G03G9/087 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide a transfer method and device that is free of image deterioration caused by transfer. SOLUTION: The method (device) for transferring a toner image formed on an image carrier 1 to a transfer medium with pressure between a transfer roller 52 and the image carrier that are in contact with each other, the metal core 51 of the transfer roller 52 is conductive metal, is characterized in that the transfer roller 52 is formed of a roller covered with an elastic material 52a whose surface hardness is 60-80° (Asker C), and also, the pressing force between the transfer roller 52 and the image carrier 1 is 1 to 10 N/cm, and when a bias is applied to the transfer roller together with pressure, toner is transferred by the action of an electric field that is the same direction as the pressure. COPYRIGHT: (C)2004,JPO&NCIPI

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