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1. 发明专利

JP2014130190A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2014130190A
公开(公告)日：2014-07-10
申请号：JP2012286934
申请日：2012-12-28
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO , IIMURA HARUO , AOKI SHINJI , NAKAMURA KEIGO
IPC分类号： G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide a transfer device which forms an excellent image even if resistance change occurs in a transfer member, and an image forming apparatus.SOLUTION: A transfer device includes: a photoreceptor for carrying a toner image; developing means for forming the toner image on the photoreceptor; a transfer sheet rotated at a predetermined speed or an intermediate transfer belt; and a transfer roller which is in contact with the inside of the transfer sheet or the intermediate transfer belt to apply transfer bias for transferring the toner image from the photoreceptor to the transfer sheet or the intermediate transfer belt. The transfer device includes: a driving source for driving the transfer roller independently; a transfer current sensor 69 which measures transfer current during predetermined image formation; and rotation control means 62 which controls rotation of the transfer roller according to information on the measured current.
摘要翻译：要解决的问题：提供即使在转印部件中发生电阻变化也形成优异的图像的转印装置和图像形成装置。传送装置包括：用于承载调色剂图像的感光体; 用于在感光体上形成调色剂图像的显影装置; 以预定速度旋转的转印纸或中间转印带; 以及转印辊，其与转印片或中间转印带的内部接触以施加转印偏压，以将调色剂图像从感光体转印到转印片或中间转印带。转印装置包括：独立驱动转印辊的驱动源; 在预定图像形成期间测量转印电流的转印电流传感器69; 以及根据关于测量电流的信息来控制转印辊的旋转的旋转控制装置62。

2. 发明专利

JP2014041335A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2014041335A
公开(公告)日：2014-03-06
申请号：JP2013106535
申请日：2013-05-20
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO , IIMURA HARUO , AOKI SHINJI , OGINO YASUHIKO , NAKAMURA KEIGO
IPC分类号： G03G15/16 , B41J11/02 , B65H5/00 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus that conveys various types of transfer target bodies having different states and shapes from each other stably with a simple configuration, and can form good images without dropouts and density unevenness.SOLUTION: An image forming apparatus includes conveying means that conveys a transfer target body P to a transfer position opposite to an intermediate transfer belt 31, and is configured to convey the transfer target body P from the upstream side in a transfer target body conveyance direction of the transfer position along to the transfer position, while holding a surface on the opposite side of a transfer target surface of the transfer target body with a conveyance belt 40. The image forming apparatus further includes a secondary transfer bias power source 39 that is configured to apply transfer bias including an AC component and a DC component to cause the conveyance belt 40 and the transfer target body P held by the conveyance belt 40 to be in non-contact with the intermediate transfer belt 31 at the transfer position.
摘要翻译：要解决的问题：提供一种图像形成装置，其以简单的结构稳定地传送具有不同状态和形状的各种类型的转印目标体，并且可以形成良好的图像而不会出现下落和浓度不均匀。解决方案：图像形成装置包括将转印目标体P输送到与中间转印带31相反的转印位置的输送装置，并且被构造成在转印位置的转印体传送方向上从转印目标主体输送方向的上游侧输送转印体传送位置，同时用输送带40在转印体的转印目标表面的相对侧上保持表面。图像形成装置还包括二次转印偏压电源39，其被配置为施加包括AC的转印偏压部件和直流部件，使输送带40和转印体P保持在输送机上电动皮带40在转印位置与中间转印带31不接触。

3. 发明专利

JP2010211005A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2010211005A
公开(公告)日：2010-09-24
申请号：JP2009057748
申请日：2009-03-11
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SHIRAISHI EMIKO , OGIYAMA HIROMI , SHIMIZU YASUNOBU , KOSUGE AKIO , YOSHIDA TAKESHI , YURA JUN , OZAKI NAOYUKI , YOSHII MASAKO , MAEDA ICHIRO , AOKI SHINJI
IPC分类号： G03G15/16 , G03G21/14
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus which is reduced in cost and can reduce image unevenness due to latent image potential remaining on a photoreceptor after transferring a toner image while securing the transfer characteristics of the toner image from the photoreceptor to a receiver medium. SOLUTION: A transfer electric field capable of transferring a toner image formed on the photoreceptor 21 to an intermediate transfer belt (receiver medium) 22 is formed, and in the transfer of the toner image to the intermediate transfer belt 22, the transfer potential of a surface of a primary transfer bias roller 23, which is opposed to the photoreceptor 21, is set so that the potential of an image part and a non-image part of the photoreceptor 21 is not shifted to the potential of reverse polarity to the charging potential of a charting device 16. A primary transfer bias roller 23 may be connected to the earth. 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，其成本降低并且可以在确保调色剂图像从感光体的转印特性确保转印调色剂图像之后由于潜在的潜像残留在感光体上而减少图像不均匀性接收媒体。解决方案：形成能够将形成在感光体21上的调色剂图像转印到中间转印带（接收介质）22的转印电场，并且在将调色剂图像转印到中间转印带22时，转印与感光体21相对的一次转印偏压辊23的表面的电位被设定为使得感光体21的图像部分和非图像部分的电位不被转移到相反极性的电位一个制图设备16的充电电位。一次转印偏压辊23可以连接到地球上。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2010101986A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2010101986A
公开(公告)日：2010-05-06
申请号：JP2008271667
申请日：2008-10-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SHIRAISHI EMIKO , OGIYAMA HIROMI , SHIMIZU YASUNOBU , KOSUGE AKIO , YOSHIDA TAKESHI , YURA JUN , OZAKI NAOYUKI , YOSHII MASAKO , MAEDA ICHIRO , AOKI SHINJI
IPC分类号： G03G15/00 , G03G15/14
CPC分类号： G03G15/169
摘要： PROBLEM TO BE SOLVED: To attain low cost by having advantages of PTL and using only a basic configuration, such as charging, exposure, and transfer, without adding specific members reducing image unevenness due to the memory effect being the side effects of PTL. SOLUTION: An electrophotographic device 10 includes: photoreceptors 21Y, 21M, 21C, 21K; a charging means 16 for charging the surfaces of the photoreceptors; an image writing part 12 for forming electrostatic latent images, by irradiating the charged photoreceptors with a light; a writing control means for controlling the image writing part 12, development apparatuses 20Y, 20M, 20C, 20K for developing the electrostatic latent images; a transfer means for transferring toner images on the photoreceptors to objects to be transferred; and an exposure means prior to transfer for exposing latent image carriers, after development and before transfer. The writing control means controls the writing means, on the basis of two image signals of a prescribed noticed image signal (A) and an image signal (B), on the downstream side by the circumferential length of the latent image carrier in a sub-scan direction from the image signal (A). COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了通过具有PTL的优点并且仅使用诸如充电，曝光和转印的基本配置来实现低成本，而不添加特定部件，由于记忆效应而导致的图像不均匀性是副作用 PTL。电摄影装置10包括：感光体21Y，21M，21C，21K; 用于对感光体的表面充电的充电装置16; 用于通过用光照射带电感光体的用于形成静电潜像的图像写入部分12; 用于控制用于显影静电潜像的图像写入部分12，显影装置20Y，20M，20C，20K的写入控制装置; 用于将感光体上的调色剂图像转印到要转印的物体上的转印装置; 以及在显影之前和转印之前用于曝光潜像载体的转印之前的曝光装置。写入控制装置根据下行侧的规定的注意图像信号（A）和图像信号（B）的两个图像信号，通过副图像载体的周长长度来控制写入装置，从图像信号（A）扫描方向。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2009115934A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2009115934A
公开(公告)日：2009-05-28
申请号：JP2007286917
申请日：2007-11-05
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IMAZEKI MIKIKO , KONDO HIROSHI , YOSHII MASAKO , KAMACHI HIDEKI , MASUBUCHI FUMITO
IPC分类号： G03G15/04 , G03G15/043 , G03G15/056
摘要： PROBLEM TO BE SOLVED: To obtain an image forming apparatus achieving miniaturization of the apparatus. SOLUTION: The image forming apparatus includes a latent image carrier 1, a latent image forming means 20, and a developing device 31. The latent image forming means 20 includes an irradiation part 21 irradiating the latent image carrier 1 with light having a short wavelength, an electrifying electrode 3 facing the latent image carrier 1 and arranged in a position where at least part of the light from the irradiation part 21 is made incident, and a voltage applying part 12 applying voltage between the latent image carrier 1 and the electrifying electrode 3. By irradiating the latent image carrier 1 with the light by the irradiation part 21 and ionizing air by light energy, a current flow path is formed between the latent image carrier 1 and the electrifying electrode 3, and then the voltage is applied between the latent image carrier 1 and the electrifying electrode 3 by the voltage applying part 12 to make a current flow in the current flow path. Accordingly, a latent image is directly formed on the latent image carrier 1. At least either the irradiation part 21 or the electrifying electrode 3 is arranged inside the latent image carrier 1. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：获得实现设备小型化的图像形成装置。解决方案：图像形成装置包括潜像载体1，潜像形成装置20和显影装置31.潜像形成装置20包括照射部分21，照射部分21照射具有短波长，面对潜像载体1并布置在其中至少部分来自照射部21的光入射的位置的带电电极3和施加电压的电压施加部12在潜像载体1和通过照射部分21照射潜像载体1并通过光能照射电离空气，在潜像载体1和充电电极3之间形成电流流路，然后施加电压通过电压施加部12在潜像载体1和充电电极3之间形成电流流动。因此，潜像直接形成在潜像载体1上。照射部21或充电电极3中的至少一个配置在潜像载体1的内部。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2007072335A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2007072335A
公开(公告)日：2007-03-22
申请号：JP2005261618
申请日：2005-09-09
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO
IPC分类号： G03G21/00 , G03G15/02 , G03G15/04 , G03G15/043
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of achieving image formation with high resolution and high density by forming latent image distribution which will not deteriorate, while using a beam having a small diameter of 50μm or smaller. SOLUTION: If the quantum efficiency of an image carrier is η, exposure energy is E[J/m 2 ], and the area of the beam spot is S[m 2 ], if the diameter of a beam spot to perform exposure for forming an electrostatic latent image is 50μm or smaller, Expression (1): 7e-8*η*E/S≤1.7 holds. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够通过形成不会劣化的潜像分布来实现高分辨率和高密度的图像形成的图像形成装置，同时使用具有50μm或更小直径的光束。解决方案：如果图像载体的量子效率为η，则曝光能量为E [J / m 2 ]，光斑的面积为S [m 2 < / SP>]，如果为了形成静电潜像而进行曝光的光束点的直径为50μm以下，则表达式（1）：7e-8 *η* E /S≤1.7成立。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2006287834A Image processing method, image forming method, image processing apparatus, image recording apparatus, program and recording medium 审中-公开
标题翻译：图像处理方法，图像形成方法，图像处理装置，图像记录装置，程序和记录介质
公开(公告)号：JP2006287834A
公开(公告)日：2006-10-19
申请号：JP2005108310
申请日：2005-04-05
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： CHIKUSHIYUTSU NOBORU , SUZUKI YASUO , OGAWA TAKESHI , YASUTOMI HIROSHI , YOSHII MASAKO , YOSHINO MASAKI , MATSUMOTO FUYUHIKO
IPC分类号： H04N1/46 , G06T1/00 , G06T3/00 , H04N1/387 , H04N1/60
摘要： PROBLEM TO BE SOLVED: To provide an image processing method and apparatus for converting a multi-version image into a single-version image containing multi-version information and for inversely converting a single-version image containing multi-version information into a multi-version image. SOLUTION: The present invention employs a reading means for reading a multi-version image and an image converting means for converting the multi-version image read by the reading means into a single-version image containing information of multi-version image. The image converting means divides a region to be displayed after conversion into four regions (upper right, lower right, upper left and lower left) as many as the number of colors desired to be recognized as information (e.g., Yellow Y, Magenta M, Cyan C, Black K), assigns a different divided region for each color desired to be recognized as information (lower right to Y, lower left to M, upper left to C, upper right to K) and displays the assigned divided region in a single color. If a color of a pixel of interest is Yellow Y, for example, among the four divided regions, the lower right region is displayed in the single color of Black K. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种图像处理方法和装置，用于将多版本图像转换为包含多版本信息的单版图像，并将包含多版本信息的单版图像逆向转换为多版本图像。解决方案：本发明采用读取多版本图像的读取装置和用于将由读取装置读取的多版本图像转换为包含多版本图像信息的单一版本图像的图像转换装置。图像转换装置将要转换后的要显示的区域分成与期望被识别为信息的颜色数量相同的四个区域（右上，右上，左上和左下）（例如，黄Y，品红色M，青色C，黑K）为所需要被识别为信息的每种颜色分配不同的分割区域（右下角为Y，左下角为M，左上角为C，右上角为K），并将分配的区域显示在单色。如果感兴趣的像素的颜色是黄色Y，例如，在四个分割区域中，右下区域以黑色的单色显示。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2006010966A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2006010966A
公开(公告)日：2006-01-12
申请号：JP2004186736
申请日：2004-06-24
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OGAWA TAKESHI , SUZUKI YASUO , WATANABE KAZUTO , YOSHINO MASAKI , YASUTOMI HIROSHI , YOSHII MASAKO
IPC分类号： G03G21/14 , B41J2/44 , G03G5/047 , G03G15/04 , G03G15/043 , H04N1/036 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To obtain a proper writing position at low cost in an image forming apparatus using a photoreceptor having a structure in which a charge generating layer is formed as minute regions in a dispersed dot shape. SOLUTION: A prescribed pattern 1 obtained by developing a luminescent pattern emitted from a plurality of LDs is formed on the photoreceptor having a structure in which a charge generating layer is formed as minute regions in a dispersed dot shape and the pattern 1 is measured by a P sensor 210. Density values measured by the P sensor 210 are input into an LD determination section 109, where an LD used for output is determined. A prescribed pattern 2 is formed on the photoreceptor and this pattern 2 is measured by the P sensor 210. Density values measured by the P sensor 210 are input into a delay quantity determination section 108, where a delay quantity used for output is determined. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：在使用具有其中形成电荷产生层的结构的感光体作为分散点形状的微小区域的图像形成装置中，以低成本获得适当的写入位置。解决方案：通过显影从多个LD发射的发光图案获得的规定图案1形成在具有其中形成电荷产生层的结构的感光体上，作为分散点形状的微小区域，并且图案1是由P传感器210测量。由P传感器210测量的密度值被输入到LD确定部分109中，其中确定用于输出的LD。在感光体上形成规定的图案2，并通过P传感器210测量图案2.由P传感器210测量的密度值被输入延迟量确定部分108，其中确定用于输出的延迟量。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2004109702A Device and method for forming image 审中-公开
公开(公告)号：JP2004109702A
公开(公告)日：2004-04-08
申请号：JP2002274080
申请日：2002-09-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO , IWAI SADAYUKI , TAKAHASHI TOMOKO , KOSUGI HIDEKI , IINO AYAKO
IPC分类号： B41J2/44 , G03G15/04 , G03G15/043 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To suppress transfer dust, to stably suppress irregularities in dots regardless of variation in lapse of time or irregularities in a developer and to improve image quality by improving graininess in an image forming device such as a copying machine, a printer and a facsimile. SOLUTION: A voltage applying member 15 for applying voltage which has the same polarity as a charge polarity of a photosensitive body 3 and also has an absolute value larger than latent image voltage V L is provided in an intermediate transfer belt 2 of a part corresponding to a gap on the upstream side of a transferring area in the rotating direction of the photosensitive body 3, and transferring is performed by a transferring bias roller. An optical writer 5 has a static beam spot wherein the relation between a dot pitch P of resolution X (dpi) in a vertical scanning direction and a static beam spot diameter ω is ω ≤ 2P. In this case, the static beam spot diameter ω is 1/e 2 of maximum beam intensity. COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2011167860A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2011167860A
公开(公告)日：2011-09-01
申请号：JP2010031227
申请日：2010-02-16
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO , ONO KENICHI , TAKESUE TOSHIHIRO , SUZUKI SEIZO
IPC分类号： B41J2/44 , G02B26/10 , G02B26/12 , G03G15/00 , G03G15/04 , G03G15/043 , G03G21/14 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of forming high-image quality and high-resolution image even in image formation by means of a plurality of beams. SOLUTION: The image forming apparatus 100, in which a polygon mirror 102a is used, a plurality of laser beams simultaneously scanned, photoreceptors 104a, 106a, 108a, 110a are exposed and, thereby, the image formation is performed, includes a calculation means 356 for calculating writing times of respective pixels in a region where continuous writing is performed in a sub scanning direction in image patterns formed on the photoreceptors, wherein, when the writing times calculated by the calculation means 356 is the minimum writing times of the patterns which form respective pixels, pixels are added in the sub scanning direction and the image formation is performed. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：解决的问题：提供即使在多个光束的图像形成中也能够形成高图像质量和高分辨率图像的图像形成装置。解决方案：使用多面镜102a的图像形成装置100同时扫描多个激光束，感光体104a，106a，108a，110a被曝光，从而进行图像形成，包括用于计算在感光体上形成的图像图案中在副扫描方向上执行连续写入的区域中的各个像素的写入时间的计算装置356，其中当计算装置356计算出的写入次数是最小写入时间形成各个像素的图案，在副扫描方向上添加像素，并且执行图像形成。版权所有（C）2011，JPO＆INPIT

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