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21. 发明专利

JP2008015206A Electrophotographic photoreceptor and its production method 审中-公开
标题翻译：电子照相机及其制作方法
公开(公告)号：JP2008015206A
公开(公告)日：2008-01-24
申请号：JP2006186084
申请日：2006-07-05
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO , SUZUKI YASUO , WATANABE KAZUTO , YOSHINO MASAKI , YASUTOMI HIROSHI , OGAWA TAKESHI
IPC分类号： G03G5/05 , B41M5/382
摘要： PROBLEM TO BE SOLVED: To provide an excellent, low-cost electrophotographic photoreceptor, forming an electrostatic latent image having a high contrast, and uniformly sticking a toner to the whole face even in a solid image, without using the conventional complicated production method, and having no problems in electrostatic properties, and to provide its production method. SOLUTION: In the electrophotographic photoreceptor in which the surface of a conductive support is provided with a charge generation layer comprising charge generation material and a charge transport layer comprising charge transport material, and the charge generation layer is dispersed into dot shape as micro-regions, the charge generation layer is formed by jetting a charge generation layer coating liquid using an ink jet process, and controlling a liquid proper quantity upon coating the charge generation layer in the electrophotographic photoreceptor in accordance with the writing density in an image forming apparatus using the electrophotographic photoreceptor. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供优异的低成本电子照相感光体，形成具有高对比度的静电潜像，并且即使在固体图像中也能均匀地将调色剂粘附到整个面上，而不使用常规的复杂生产方法，并且在静电性能方面没有问题，并提供其制造方法。解决方案：在电子照相感光体中，其中导电性支持体的表面设置有包含电荷产生材料的电荷产生层和包含电荷传输材料的电荷传输层，并且电荷产生层分散成点状，如微孔电荷产生层通过使用喷墨法喷射电荷产生层涂布液而形成，并且在图像形成装置中根据书写密度涂布电子照相感光体中的电荷产生层时控制液体适量使用电子照相感光体。版权所有（C）2008，JPO＆INPIT

22. 发明专利

JP2005316191A Image quality estimating method and image forming apparatus 审中-公开
标题翻译：图像质量估计方法和图像形成装置
公开(公告)号：JP2005316191A
公开(公告)日：2005-11-10
申请号：JP2004134619
申请日：2004-04-28
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： USAMI MOTOHIRO , KADONAGA MASAFUMI , KISHI YUMIKO , SEYA KEIICHI , SHOJI HISAFUMI , YOSHII MASAKO
IPC分类号： G03G15/00 , G03G21/00
摘要： PROBLEM TO BE SOLVED: To provide an image quality estimating method for obtaining stable image quality by using a relation between the image quality and variation in the quantity of electrified toner in developer deteriorating with time, and to provide an image forming apparatus capable of applying such an image quality estimating method. SOLUTION: Relational formula is obtained from at least a beam diameter ω, the average quantity of electrified toner in developer (average Q/M) and the actual measurement data of the distribution width of the quantity of electrified toner (ΔQ/M) and dot reflectivity variation width at the time. Based upon thus obtained formula, image quality is estimated. Here, the beam spot diameter ω is the average value of 1/e 2 diameters of beams with maximum intensity in the main and sub-scanning directions. The distribution width of the quantity of electrified toner ΔQ/M is the width of 1/e 2 of Q/M distribution maximum frequency. The dot reflectivity variation width is the width of the maximum frequency of 1/e 2 in the distribution of the measured reflectivities of at least 1000 dots. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种图像质量估计方法，用于通过利用图像质量与显影剂中带电量的调色剂的量随时间的变化之间的关系来获得稳定的图像质量，并且提供一种能够应用这样的图像质量估计方法。解决方案：关系式是从至少一个光束直径ω，显影剂中的带电调色剂的平均量（平均Q / M）和带电量调色剂的分布宽度的实际测量数据（ΔQ/ M ）和点反射率变化宽度。基于这样得到的公式，估计图像质量。这里，光点直径ω是在主扫描方向和副扫描方向上具有最大强度的光束的1 / e 2 直径的平均值。带电量的调色剂的分布宽度ΔQ/ M是Q / M分布最大频率的1 / e 2 的宽度。点反射率变化宽度是所测量的至少1000点的反射率分布中最大频率的1 / e 2 的宽度。版权所有（C）2006，JPO＆NCIPI

23. 发明专利

JP2005099078A Electrophotographic photoreceptor and its manufacturing method 有权
标题翻译：电子照相机及其制造方法
公开(公告)号：JP2005099078A
公开(公告)日：2005-04-14
申请号：JP2003329399
申请日：2003-09-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SUZUKI YASUO , WATANABE KAZUTO , OGAWA TAKESHI , YOSHII MASAKO , YASUTOMI HIROSHI , YOSHINO MASAKI
IPC分类号： G03G5/047 , G03G5/00
摘要： PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor by which proper image quality is afforded. SOLUTION: The electrophotographic photoreceptor consists of a charge-generating layer, having at least a charge generating material and a charge transfer layer containing at least a charge transfer material on a conductive support, in which the charge generating layer is formed by being dispersed in the form of dots as microregions. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供通过其提供适当的图像质量的电子照相感光体。解决方案：电子照相感光体由电荷产生层组成，电荷产生层至少具有电荷产生材料和在导电载体上至少含有电荷转移材料的电荷转移层，其中电荷产生层通过以微点的形式分散。版权所有（C）2005，JPO＆NCIPI

24. 发明专利

JP2004106365A Image formation apparatus and copying apparatus 审中-公开
公开(公告)号：JP2004106365A
公开(公告)日：2004-04-08
申请号：JP2002272669
申请日：2002-09-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO , KADONAGA MASAFUMI
IPC分类号： B41J2/44 , G02B26/10 , G03G15/04 , G03G15/16 , H04N1/113 , H04N1/23 , H04N1/29
摘要： PROBLEM TO BE SOLVED: To form high quality images faithful to original images by preventing generation of banding because of superposed exposure without being influenced by resolutions also when writing is carried out by a high resolution. SOLUTION: In the image formation apparatus, a surface of a photoreceptor 13 charged by a charging device is set as a face to be scanned, and a multibeam scanning device 18 is installed for simultaneously light scanning on the face by a plurality of light beams obtained by deflecting and scanning each of light emitted from a plurality of light sources. Toner supplied to the surface of the photoreceptor 13 light scanned by the multibeam scanning device 18 is transferred to a body to be transferred. A superposition length in a vertical scanning direction of scanning lines formed on the face by the simultaneous light scanning by the multibeam scanning device 18 is set to be not larger than a minimum pixel. COPYRIGHT: (C)2004,JPO

25. 发明专利

JP2014081608A Image forming apparatus and image forming method 有权
标题翻译：图像形成装置和图像形成方法
公开(公告)号：JP2014081608A
公开(公告)日：2014-05-08
申请号：JP2013095311
申请日：2013-04-30
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IIMURA HARUO , AOKI SHINJI , YOSHII MASAKO , NAKAMURA KEIGO
IPC分类号： G03G15/01 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of providing, even when using a recording sheet having a number of concaves and convexes on the surface, sufficient image density in the concave parts of the sheet surface, and suppressing blur on edges of character images and line images.SOLUTION: A secondary transfer power source 82 is configured to output a secondary transfer bias capable of forming, in a secondary transfer nip, an alternating electric field that alternately generates an electric field to give an electrostatic force directed from an intermediate transfer belt 21 side to a secondary transfer roller 26 side to a toner, and an electric field to give an electrostatic force directed from the secondary transfer roller 26 side to the belt side to the toner. An image forming unit 1T is provided to form a transparent toner layer to an area on the surface of the belt before approaching the secondary transfer nip and to which a plurality of colors of toner Y, M, C, and K forming a Y, M, C, K toner image are not adhered.
摘要翻译：要解决的问题：为了提供一种图像形成装置，即使当使用表面上具有多个凹凸的记录片材时，也能够提供在片材表面的凹部中的足够的图像密度，并且抑制边缘上的模糊字符图像和行图像。解决方案：二次转印电源82被配置为输出二次转印偏压，其能够在二次转印压区中形成交替产生电场的交变电场，以产生从中间转印带21侧到二次转印辊26侧到调色剂，以及电场，以产生从二次转印辊26侧向带侧指向调色剂的静电力。提供图像形成单元1T以在接近二次转印夹持部之前在带的表面上形成透明调色剂层，并且多个颜色的调色剂Y，M，C和K形成Y，M C，K调色剂图像不粘附。

26. 发明专利

JP2011027916A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2011027916A
公开(公告)日：2011-02-10
申请号：JP2009172262
申请日：2009-07-23
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO , YOSHIDA TAKESHI , MAEDA ICHIRO , AOKI SHINJI , YURA JUN , SHIRAISHI EMIKO , OZAKI NAOYUKI , OGIYAMA HIROMI , SHIMIZU YASUNOBU , KOSUGE AKIO
IPC分类号： G03G15/16 , G03G15/01
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus for inversion development, which reduces toner dust around an image part and ensures satisfactory transferability over the entire surface of a body to be transferred.
SOLUTION: A PTL exposure is carried out on an image part F in units of the number of pixels with intensity higher than on a non-image part NF. Thereby, the potential of the non-image part NF is decreased, and positive electric charges are efficiently generated in the image part F at the same time. Accordingly, generation of toner dust is stably and reliably suppressed.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于反转显影的图像形成装置，其减少图像部分周围的调色剂灰尘并且确保在待转印体的整个表面上的令人满意的转印性。解决方案：在图像部分F上以强度高于非图像部分NF的像素数的单位进行PTL曝光。因此，非图像部分NF的电位降低，并且在图像部分F中同时有效地产生正电荷。因此，稳定可靠地抑制调色剂粉尘的产生。版权所有（C）2011，JPO＆INPIT

27. 发明专利

JP2010152108A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2010152108A
公开(公告)日：2010-07-08
申请号：JP2008330492
申请日：2008-12-25
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO , YOSHIDA TAKESHI , MAEDA ICHIRO , AOKI SHINJI , YURA JUN , SHIRAISHI EMIKO , OZAKI NAOYUKI , OGIYAMA HIROMI , SHIMIZU YASUNOBU , KOSUGE AKIO
IPC分类号： G03G21/08 , G03G15/00 , G03G15/01 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus obtaining a good transfer characteristics over the whole transfer body by reducing toner scattering in an image periphery section, in the image forming apparatus carrying out reversal development. SOLUTION: The image forming apparatus has: an image carrier 1Y for carrying an electrostatic latent image; a charging means 2Y for charging the image carrier 1Y; an exposure means 20 for forming the electrostatic latent image based on the image information on the image carrier 1Y; a developing means 4Y for making a toner image by developing the electrostatic latent image; a transfer means 80 for transferring the toner image to the body to be transferred; a transfer bias applying means 6Y for applying bias to the transferring means; and a transfer pre-exposure means 7Y for exposing the image carrier 1Y before transfer. The exposure amount of the transfer pre-exposure means 7Y is adjusted according to the toner charged amount. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种图像形成装置，其在进行反转显影的图像形成装置中，通过减少图像周边部分中的调色剂散射，在整个转印体上获得良好的转印特性。解决方案：图像形成装置具有：用于承载静电潜像的图像载体1Y; 用于对图像载体1Y充电的计费装置2Y; 基于图像载体1Y上的图像信息形成静电潜像的曝光装置20; 用于通过显影静电潜像来制造调色剂图像的显影装置4Y; 用于将调色剂图像转印到要转印的主体的转印装置80; 用于向转印装置施加偏压的转印偏压施加装置6Y; 以及用于在传送之前曝光图像载体1Y的转印预曝光装置7Y。根据调色剂带电量调整转印预曝光装置7Y的曝光量。版权所有（C）2010，JPO＆INPIT

28. 发明专利

JP2009134200A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2009134200A
公开(公告)日：2009-06-18
申请号：JP2007311853
申请日：2007-12-03
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ARAI NOBUYUKI , HAYASHI YOSHIAKI , YOSHII MASAKO
IPC分类号： G03G15/04 , G03G15/043
CPC分类号： H04N1/1135 , H04N1/0282 , H04N2201/02456 , H04N2201/02458 , H04N2201/0246 , H04N2201/02462 , H04N2201/04794 , H04N2201/04796
摘要： PROBLEM TO BE SOLVED: To form high quality image without cost increase. SOLUTION: One pixel of an image is formed by a plurality of light spots having different focal positions in at least a sub-scanning direction. At least one light spot among the light spots is formed on the surface of a photoreceptor drum 1030 at a scan timing different from those of rest of the light spots. In this case, since each pixel is compulsorily scanned multiple times, variation in the latent-image integration values can be reduced as compared to when there is coexistence of pixels that have been scanned once and pixels that have been scanned multiple times. As a result, as compared to conventional technology, density unevenness in the output image can be reduced. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：形成高质量的图像而不增加成本。解决方案：图像的一个像素在至少副扫描方向上由具有不同焦点位置的多个光点形成。在感光鼓1030的表面上以与其余的光斑不同的扫描时刻形成光斑中的至少一个光点。在这种情况下，由于每个像素被强制扫描多次，与当已经被扫描一次的像素和已被扫描多次的像素共存时，可以减小潜像积分值的变化。结果，与传统技术相比，输出图像中的浓度不均匀性可以降低。版权所有（C）2009，JPO＆INPIT

29. 发明专利

JP2008036992A Image writing apparatus and image forming apparatus 审中-公开
标题翻译：图像书写装置和图像形成装置
公开(公告)号：JP2008036992A
公开(公告)日：2008-02-21
申请号：JP2006215423
申请日：2006-08-08
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO
IPC分类号： B41J2/44 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To form a high quality and high resolution image free from the effect of reciprocity failure regardless of beam superposition in image forming by a plurality beams.
SOLUTION: The image writing apparatus forms an image by simultaneously scanning and exposing a photoreceptor with a plurality of light beams. A writing condition of peripheral pixels adjacent in a sub scanning direction is determined, and when an image to be written is determined to be an isolated image in the sub scanning direction, a writing density by the light beams is increased. That is, the peripheral pixels in simultaneous writing are surely written simultaneously, which enables images having little difference to be formed even if a sequential exposure and a simultaneous exposure are mixed, according to the scanning. Even and stable writing is thereby provided not by writing the isolated image in the sub scanning direction, but by surely carrying out the simultaneous exposure, and toner is stably consumed since the evenness is provided, which reduces wasteful consumption of the toner.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了形成不受往复性故障影响的高质量和高分辨率图像，而不管由多个光束成像的光束叠加。解决方案：图像写入装置通过同时扫描和曝光具有多个光束的感光体来形成图像。确定在副扫描方向上相邻的周边像素的写入条件，并且当要写入的图像被确定为副扫描方向上的隔离图像时，增加了光束的写入浓度。也就是说，同时写入的周边像素被可靠地写入，这使得即使根据扫描混合顺序曝光和同时曝光，也能够形成几乎没有差异的图像。因此，不是通过在副扫描方向上写入隔离图像，而是通过可靠地进行同时曝光来提供均匀且稳定的写入，并且由于提供均匀性而调色剂被稳定地消耗，这减少了调色剂的浪费。版权所有（C）2008，JPO＆INPIT

30. 发明专利

JP2007286506A Photoreceptor and image forming apparatus 有权
标题翻译：光电器和图像形成装置
公开(公告)号：JP2007286506A
公开(公告)日：2007-11-01
申请号：JP2006115868
申请日：2006-04-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO , SUZUKI YASUO , CHIKUSHIYUTSU NOBORU , YASUTOMI HIROSHI , OGAWA TAKESHI , MATSUMOTO FUYUHIKO , YOSHINO MASAKI
IPC分类号： G03G15/16 , G03G5/047
摘要： PROBLEM TO BE SOLVED: To provide a photoreceptor which is set so as to operate an electric field, in the direction of preventing toner on an image carrier from being sucked to an intermediate transfer body, to a void on the upstream side in the image carrier rotation direction with respect to the image carrier and a first transfer part of the intermediate transfer body as an image dust prevention means, and to provide an image forming apparatus comprising the photoreceptor.
SOLUTION: The photoreceptor is used for the image forming apparatus in which an image is formed by a charging means for charging the image carrier, an exposure means for forming an electrostatic latent image on the image carrier, a development means for developing the latent image on the image carrier with toner of the same polarity as that of the latent image, a first transfer means for transferring a toner image onto the intermediate transfer body and a second transfer means for transferring the toner image on the intermediate transfer body to a recording body, wherein a voltage on an image carrier non-image part is retained in -200 V or less.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种感光体，其设置成在防止图像载体上的调色剂被吸入中间转印体的方向上操作电场到上游侧的空隙相对于图像载体的图像载体旋转方向和作为图像防止装置的中间转印体的第一转印部分，并且提供包括感光体的图像形成装置。解决方案：感光体用于图像形成装置，其中通过用于对图像载体进行充电的充电装置形成图像，用于在图像载体上形成静电潜像的曝光装置，用于显影图像的显影装置在具有与潜像相同极性的调色剂的图像载体上的潜像，用于将调色剂图像转印到中间转印体上的第一转印装置和用于将调色剂图像转印到中间转印体上的第二转印装置记录体，其中图像载体非图像部分上的电压保持在-200V或更小。版权所有（C）2008，JPO＆INPIT

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