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11. 发明专利

JP2010061013A Image forming apparatus and image transfer method 审中-公开
标题翻译：图像形成装置和图像传输方法
公开(公告)号：JP2010061013A
公开(公告)日：2010-03-18
申请号：JP2008228535
申请日：2008-09-05
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHIDA TAKESHI , YOSHII MASAKO , MAEDA ICHIRO , AOKI SHINJI , YURA JUN , SHIRAISHI EMIKO , OZAKI NAOYUKI , OGIYAMA HIROMI , SHIMIZU YASUNOBU , KOSUGE AKIO
IPC分类号： G03G21/00 , G03G15/00 , G03G15/16 , G03G21/08
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus which obtains both an advantage of PTL and an advantage of switching of transfer bias in a non-image part. SOLUTION: The intermediate transfer type image forming apparatus which transfers a toner image on a photoreceptor 21 to an intermediate transfer belt 22 includes: a transfer bias applying means 6 for applying bias to a primary transfer bias roller 23; and an exposure member 27 for eliminating charge of the photoreceptor 21 before transfer after development. The image forming apparatus includes a control means 7 functioning as a mode switching means for switching between an image forming mode in which the charge of the photoreceptor 21 is eliminated by the exposure member 27 and an image forming mode in which the charge thereof is not eliminated, and a control means 7 functioning as a bias switching means for switching the transfer bias between an image part and the non-image part. In the image forming mode in which the charge is eliminated, switching of the transfer bias is not performed. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种获得PTL的优点和非图像部分中的转印偏压的切换优点的图像形成装置。将感光体21上的调色剂图像转印到中间转印带22上的中间转印型成像设备包括：向一次转印偏压辊23施加偏压的转印偏压施加机构6; 以及用于在显影后转移之前消除感光体21的电荷的曝光构件27。图像形成装置包括控制装置7，其用作模式切换装置，用于在曝光构件27中消除感光体21的电荷的图像形成模式与不消除感光体21的图像形成模式之间进行切换以及用作偏转切换装置的控制装置7，用于切换图像部分和非图像部分之间的转印偏压。在消除电荷的图像形成模式中，不进行转印偏压的切换。版权所有（C）2010，JPO＆INPIT

12. 发明专利

JP2009163137A Optical scanner and image forming apparatus 审中-公开
标题翻译：光学扫描仪和图像形成装置
公开(公告)号：JP2009163137A
公开(公告)日：2009-07-23
申请号：JP2008002513
申请日：2008-01-09
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO , SUZUKI SEIZO , HAYASHI YOSHIAKI , ICHII DAISUKE
IPC分类号： G02B26/10 , B41J2/44 , H04N1/113
CPC分类号： G03G15/326 , G03G15/0435 , G03G2215/0404 , G03G2215/0407
摘要： PROBLEM TO BE SOLVED: To provide an optical scanner that can highly accurately suppress density unevenness of an image during multi-beam image formation using a plurality of beams, especially VCSELs as a light source, and is adaptive to a high speed, high density, and high picture quality. SOLUTION: The optical scanner includes: a light source 1 composed of surface light emitting lasers arrayed in two dimensions; a first optical system (a coupling lens 2, an aperture 3 and a cylindrical lens 4) guiding a plurality of beams from the light source 1 to a deflecting means 5; and a second optical system (a deflector-side scanning lens 6 and an image-plane-side scanning lens 7) guiding the plurality of beams from the deflecting means 5 to a surface 9 to be scanned. The optical scanner has the spatial frequency S represented as S=1/(1/(25.4÷n×b×p)) present within a range of high relative luminosity factor of spatial frequency characteristics of the visual sensation system, where n is pixel density; b is the number of the beams from the light source 1; and p is the number of deflecting surfaces of the deflecting means 5. Here, L1>(k-1)×L2 (k: the total number of light emission points of the light source) is satisfied, where L1 is the interval between both sub-scan-directional ends of a scanning line formed through a single scan by the deflecting means 5, and L2 is an interval of adjacency of all scanning lines on the scanned surface. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够高精度地抑制使用多个光束，特别是作为光源的VCSEL的多光束图像形成期间的图像的浓度不均匀性并且适应于高速的光学扫描器，高密度，高画质。解决方案：光学扫描器包括：由二维排列的表面发光激光器构成的光源1; 将多个光束从光源1引导到偏转装置5的第一光学系统（耦合透镜2，孔3和柱面透镜4）以及将多个光束从偏转装置5引导到待扫描的表面9的第二光学系统（偏转器侧扫描透镜6和图像平面侧扫描透镜7）。光学扫描仪具有在视觉感觉系统的空间频率特性的高相对亮度因子的范围内存在的存在于S = 1 /（1 /（25.4÷n×b×p））的空间频率S，其中n是像素密度; b是来自光源1的光束的数量; p是偏转装置5的偏转面的数量。这里，L1>（k-1）×L2（k：光源的发光点的总数）被满足，其中L1是两者之间的间隔通过偏转装置5通过单次扫描形成的扫描线的副扫描方向的端部，L2是扫描表面上的所有扫描线的邻接间隔。版权所有（C）2009，JPO＆INPIT

13. 发明专利

JP2008012806A Apparatus and method for forming image 审中-公开
标题翻译：用于形成图像的装置和方法
公开(公告)号：JP2008012806A
公开(公告)日：2008-01-24
申请号：JP2006186763
申请日：2006-07-06
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO
IPC分类号： B41J2/44 , G02B26/10 , G02B26/12 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an apparatus and a method for forming a high quality and high resolution image, regardless of superimposed beams, and without the influence of reciprocity failure, in an image forming by a plurality of beams. SOLUTION: The image forming apparatus scans and expose photoreceptor 1 simultaneously with a plurality of laser beams to form an image. The image forming apparatus has: a detection means for detecting an image being a write image and adjacent in a sub scanning direction; a judging means for judging whether a write scanning overlaps in the adjacent image from the detection result; and varying write timing from the judgement result. The image forming method is also provided. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于形成高质量和高分辨率图像的装置和方法，不管叠加的光束如何，并且不受往复故障的影响，在由多个光束形成的图像中。解决方案：图像形成装置与多个激光束同时扫描和曝光感光体1以形成图像。图像形成装置具有：检测装置，用于检测作为写入图像并且在副扫描方向上相邻的图像; 判断装置，用于根据检测结果判断写入扫描是否与相邻图像重叠; 并根据判断结果改变写入定时。还提供了图像形成方法。版权所有（C）2008，JPO＆INPIT

14. 发明专利

JP2004106298A Image formation device 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2004106298A
公开(公告)日：2004-04-08
申请号：JP2002270710
申请日：2002-09-17
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KADONAGA MASAFUMI , YOSHII MASAKO
IPC分类号： B41J2/44 , G03G15/04 , H04N1/036 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide an image formation device which enables high image quality images to be formed.
SOLUTION: In the image formation device 1 of an electrophotographic system, light beams are exposed to an image carrier 7 so that a main scanning direction diameter and a vertical scanning direction diameter of latent image dots formed in an electric field intensity region of not smaller than a critical developing electric field intensity as a threshold of an electric field intensity whereby toner is adhered to a surface 8 of the image carrier 7 in an electric field intensity distribution of the surface 8 of the image carrier 7 are nearly equal to each other. Dots of a nearly circular shape can be formed on a recording material by transferring a toner image of the latent image dots to the recording material.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供能够形成高图像质量图像的图像形成装置。解决方案：在电子照相系统的图像形成装置1中，将光束暴露于图像载体7，使得在电场强度区域中形成的潜像点的主扫描方向直径和垂直扫描方向直径不小于作为电场强度阈值的临界显影电场强度，其中调色剂在图像载体7的表面8的电场强度分布中附着到图像载体7的表面8几乎等于每个其他。通过将潜像调色剂图像转印到记录材料上，可以在记录材料上形成几乎圆形的点。版权所有（C）2004，JPO

15. 发明专利

JP2003043783A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2003043783A
公开(公告)日：2003-02-14
申请号：JP2001230690
申请日：2001-07-30
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KADONAGA MASAFUMI , IWAI SADAYUKI , KISHI YUMIKO , SEYA KEIICHI , YOSHII MASAKO , SHOJI HISAFUMI , MASUBUCHI FUMITO
IPC分类号： G03G15/02 , G03G9/08 , G03G9/09 , G03G15/01 , G03G15/08 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus in which inverse transfer is prevented to an image carrier of toner image formed on the image carrier which is caused by discharge at the nip entrance region of a transfer nipping part at which the image carrier and a transferred material are confronted. SOLUTION: In this apparatus, a voltage Vp to be applied to a transfer bias roller 62b, the nip width Ln of a transfer nipping part and the charged potential V of a photoreceptor 40 are adjusted so that the discharge between the non-image part of the photoreceptor 40 and the toner image transferred on an intermediate transferring belt 10 is not generated at the nip entrance region of the transfer nipping part. As a result, the discharge at sides of nip entrance regions are suppressed and inverse transfer to photoreceptors 40 in transferring process of the second color and succeeding colors are prevented and, moreover, it is made possible to recycle remaining toner which are recovered from the photoreceptors 40.
摘要翻译：要解决的问题：提供一种图像形成装置，其中防止由图像载体上的转印夹持部分的压区进入区域处的放电引起的图像载体上形成的调色剂图像的图像载体的逆转印，转移的材料面对。解决方案：在该装置中，调整施加到转印偏压辊62b的电压Vp，转印夹持部分的夹持宽度Ln和感光体40的带电电位V，使得非图像部分之间的放电感光体40和转印在中间转印带10上的调色剂图像不会在转印夹持部分的辊隙进入区域产生。结果，抑制了压区进入区域的放电，并且防止了在转印第二颜色和后续颜色的转印过程中对感光体40的反向转印，此外，可以将从感光体回收的剩余调色剂 40。

16. 发明专利

JP2013195901A Image forming device 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2013195901A
公开(公告)日：2013-09-30
申请号：JP2012065209
申请日：2012-03-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO
IPC分类号： G03G21/00 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To provide an image forming device capable of detecting photoreceptor characteristics with high accuracy.SOLUTION: An image forming device includes: a photoreceptor 1; charging means 2 which charges a surface of the photoreceptor; exposure means 3 which exposes the surface of the photoreceptor charged by the charging means, and forms a latent image; spot light irradiation means 12 which irradiates the latent image on the surface of the photoreceptor and its surroundings with spot light; induction current detection means 11 which detects a change in a surface charge amount caused by optical attenuation of the photoreceptor by being irradiated with the spot light as induction current; and latent image measurement means 10 which measures the latent image formed on the surface of the photoreceptor on the basis of a detection result of the induction current detection means. The latent image measurement means irradiates a plurality of measurement positions on the surface of the photoreceptor with spot light by means of the spot light irradiation means simultaneously or substantially simultaneously, and the induction current detection means detects the induction current at the plurality of measurement positions.
摘要翻译：要解决的问题：提供能够以高精度检测感光体特性的图像形成装置。解决方案：图像形成装置包括：感光体1; 充电装置2，其对感光体的表面充电; 曝光装置3，其暴露由充电装置充电的感光体的表面，并形成潜像; 点光照射装置12，其用点光照射感光体的表面上的潜像; 感应电流检测装置11，其通过用点光照射作为感应电流来检测由感光体的光衰减引起的表面电荷量的变化; 以及根据感应电流检测装置的检测结果测量形成在感光体表面上的潜像的潜像测量装置10。潜像测量装置同时或基本上同时通过点光照射装置用点光照射感光体表面上的多个测量位置，并且感应电流检测装置检测多个测量位置处的感应电流。

17. 发明专利

JP2012078777A Latent image measuring device 审中-公开
标题翻译：专利图像测量装置
公开(公告)号：JP2012078777A
公开(公告)日：2012-04-19
申请号：JP2011067340
申请日：2011-03-25
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHII MASAKO
IPC分类号： G03G21/00 , G03G15/00 , G03G15/04
摘要： PROBLEM TO BE SOLVED: To provide a latent image measuring device capable of measuring a latent image without any blur in a method for measuring a surface potential by a charge amount (an induction current) induced to an electrode by an annihilation of the surface potential by an optical attenuation.SOLUTION: This latent image measuring device applies a detection light from a light source different from that of an exposure to a latent image of a photoreceptor formed by a latent image writing device, detects an induction current and measures a change in the charge amount on the surface of the photoreceptor. This latent image measuring device moves the detection light in the rotary axis direction and/or the rotating direction of the photoreceptor, applies a next detection light to a position apart from the detection light position that has been applied previously, and performs the measurement.
摘要翻译：要解决的问题：提供一种潜像测量装置，其能够通过通过湮灭了电极的电荷量（感应电流）来测量表面电位的方法而无任何模糊表面电位由光衰减。解决方案：该潜像测量装置将来自与由潜像写入装置形成的感光体的潜像的曝光不同的光源的检测光施加到感光体形成的感光体的潜像上，检测感应电流并测量电荷的变化在感光体的表面上的量。该潜像测量装置使检测光沿旋转轴方向和/或感光体的旋转方向移动，将下一个检测光施加到与先前已经被应用的检测光位置隔开的位置，并进行测量。版权所有（C）2012，JPO＆INPIT

18. 发明专利

JP2010197744A Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：JP2010197744A
公开(公告)日：2010-09-09
申请号：JP2009042884
申请日：2009-02-25
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： MAEDA ICHIRO , YOSHIDA TAKESHI , YOSHII MASAKO , 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 including a pre-transfer destaticizing process, which suppresses toner scattering on an electrostatic latent image carrier caused in the pre-transfer destaticizing process, and ensures an excellent image with little image missing due to reverse transfer.
SOLUTION: In the image forming apparatus, a toner image obtained by developing an electrostatic latent image formed on the electrostatic latent image carrier is primarily transferred to an intermediate transfer body to form a transfer image, and then a secondary transfer image transferred to a recording member is fixed. The image forming apparatus includes a pre-transfer exposure device, and an electrode for generating electric field disposed to be opposed to a surface of the electrostatic latent image carrier, which are continuously disposed in order on a downstream side of a developing device in a rotating direction of the electrostatic latent image carrier, wherein the electric field within a range where discharge is not generated is formed near a part to be exposed of the electrostatic latent image carrier by the electrode for generating the electric field.
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，其包括预传输去静电处理，其抑制在预转印去静电处理中引起的静电潜像载体上的调色剂飞散，并且确保具有少量图像缺失的优异图像由于反向转移。解决方案：在图像形成装置中，将形成在静电潜像载体上的静电潜像显影得到的调色剂图像主要传送到中间转印体以形成转印图像，然后将二次转印图像转印到记录部件是固定的。图像形成装置包括预转印曝光装置和用于产生电场的电极，所述电极设置成与静电潜像载体的表面相对，所述电极依次在旋转的显影装置的下游侧依次设置通过用于产生电场的电极在静电潜像载体的暴露部分附近形成静电潜像载体的方向，其中不产生放电的范围内的电场。版权所有（C）2010，JPO＆INPIT

19. 发明专利

JP2010134271A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2010134271A
公开(公告)日：2010-06-17
申请号：JP2008311309
申请日：2008-12-05
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YOSHIDA TAKESHI , YOSHII MASAKO , MAEDA ICHIRO , AOKI SHINJI , YURA JUN , SHIRAISHI EMIKO , OZAKI NAOYUKI , OGIYAMA HIROMI , SHIMIZU YASUNOBU , KOSUGE AKIO
IPC分类号： G03G15/01 , G03G15/02 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of improving the efficiency of transfer by suppressing the occurrence of a residual image to the utmost.
SOLUTION: A PTL 27 is mounted only in a black image forming unit 4K, where an charging charger 32 is used as an charging means. The PTL 27 is not mounted in other image forming units, that is, yellow, magenta and cyan image forming units 4Y, 4M and 4C, where charging rollers 16Y, 16M and 16C are used as the charging means. An charged area by the charging device 32 is made wider than charged areas by the charging devices 16Y, 16M and 16C. In the image forming unit in which the PTL is mounted, the charging means having the charged area wider than the charged area by the charging means used in the image forming unit in which the PTL is not mounted is used, thereby the occurrence of the residual image is suppressed.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够通过最大限度地抑制残留图像的发生而提高传送效率的图像形成装置。解决方案：PTL 27仅安装在黑色图像形成单元4K中，其中充电充电器32用作充电装置。 PTL27未安装在使用充电辊16Y，16M和16C作为充电装置的其他图像形成单元，即黄色，品红色和青色图像形成单元4Y，4M和4C中。通过充电装置16Y，16M和16C，充电装置32的充电区域比充电区域宽。在其中安装有PTL的图像形成单元中，使用通过在未安装PTL的图像形成单元中使用的充电装置具有比充电区域宽的充电区域的充电装置，从而发生剩余图像被抑制。版权所有（C）2010，JPO＆INPIT

20. 发明专利

JP2010134153A Image forming apparatus 审中-公开
标题翻译：图像形成装置
公开(公告)号：JP2010134153A
公开(公告)日：2010-06-17
申请号：JP2008309519
申请日：2008-12-04
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KOSUGE AKIRO , YOSHIDA TAKESHI , YOSHII MASAKO , MAEDA ICHIRO , YURA JUN , AOKI SHINJI , SHIRAISHI EMIKO , OZAKI NAOYUKI , OGIYAMA HIROMI , SHIMIZU YASUNOBU
IPC分类号： G03G21/00 , G03G15/00 , G03G15/02 , G03G15/16 , G03G21/10
摘要： PROBLEM TO BE SOLVED: To prevent generation of an abnormal image such as an after-image to reduce the smudge of a charging roller while enhancing a merit of static elimination before transfer and lubricant application. SOLUTION: An image forming apparatus includes an imaging apparatus including: an image carrier 40, a charging means 70, an electrostatic latent image forming means 21; a developing means 60; a transfer means 11 transferring a toner image by development to paper or an intermediate transfer body 10; a static eliminating means 72 before transfer, arranged between the developing means and the transfer means; a means 83 for cleaning the image carrier after transfer; and a means 84 for applying a lubricant to the image carrier between cleaning and charging. The image forming apparatus includes a bias means 75 before charging, for applying bias potential before charging of the same polarity as the charging polarity by the charging means and larger than charging start voltage, to the image carrier between the application of the lubricant and charging, and further includes a means for switching the bias potential before charging, at timing when an image carrier part whose transfer bias is switched by the transfer means reaches the bias means. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了防止产生诸如后图像的异常图像以减少充电辊的污迹，同时提高转印前的静电消除的优点和润滑剂的应用。解决方案：图像形成装置包括成像装置，包括：图像载体40，充电装置70，静电潜像形成装置21; 显影装置60; 通过显影将调色剂图像转印到纸张或中间转印体10的转印装置11; 布置在显影装置和转印装置之间的转印前的静电消除装置72; 用于在传送之后清洁图像载体的装置83; 以及用于在清洁和充电之间向图像载体施加润滑剂的装置84。图像形成装置包括充电前的偏置装置75，用于在通过充电装置充电极性与充电开始电压相同的极性充电之前向施加润滑剂和充电之间的图像载体施加偏置电位，并且还包括用于在转印装置转印转印偏压的图像载体部分到达偏压装置的定时，在充电之前切换偏置电位的装置。版权所有（C）2010，JPO＆INPIT

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