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    • 71. 发明专利
    • Diffuse reflection light output conversion method, powder sticking amount conversion method, and image forming device
    • DIFFUSE反射光输出转换方法,粉末贴装转换方法和图像形成装置
    • JP2013250536A
    • 2013-12-12
    • JP2012127439
    • 2012-06-04
    • Ricoh Co Ltd株式会社リコー
    • MUROI HIDEOHIRAI HIDEJI
    • G03G15/01G03G15/00
    • PROBLEM TO BE SOLVED: To provide a diffuse reflection light output conversion method that can reduce an approximate error and perform high-precision calibration in calculating a correction coefficient of light conversion algorithm, and thereby can contribute to improvement in image density stabilization.SOLUTION: A diffuse reflection light output conversion method includes: generating one-to-one correspondence relation (reference relation) between reference regular reflection light output conversion values and a reference diffuse reflection light output conversion values; converting a regular reflection light output conversion value obtained by a light conversion algorithm into reference diffuse reflection light output according to the reference relation; finding, as a correction coefficient, the ratio of the value to the diffuse reflection light output conversion value found using a regular reflection light output conversion value; and converting the diffuse reflection light output conversion value into a value univocally determined based upon relation to a sticking amount by multiplying the diffuse reflection light output conversion value by the correction coefficient.
    • 要解决的问题:为了提供在计算光转换算法的校正系数中可以减小近似误差并执行高精度校准的漫反射光输出转换方法,从而可以有助于提高图像密度的稳定性。解决方案:A 漫反射光输出转换方法包括:在参考正反射光输出转换值和参考漫反射光输出转换值之间产生一对一对应关系(参考关系); 将通过光转换算法获得的规则反射光输出转换值转换为根据参考关系的参考漫反射光输出; 求出使用常规反射光输出转换值求出的与漫反射光输出转换值的比值作为校正系数; 以及通过将漫反射光输出转换值乘以校正系数,将漫反射光输出转换值转换成基于与粘着量相关的单一确定的值。
    • 72. 发明专利
    • Image forming apparatus
    • 图像形成装置
    • JP2013195767A
    • 2013-09-30
    • JP2012063511
    • 2012-03-21
    • Ricoh Co Ltd株式会社リコー
    • MUTO TETSUYAISHIBASHI HITOSHIFUJIMORI KOTATANAKA KAYOKOHIRAI HIDEJIHIRAYAMA YUJIMIZUTANI TAKEHIDEOMURA MAKOTOKANEKO SATOSHIGOTO KEITAMUROI HIDEO
    • G03G15/16G03G15/00
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus which forms an image of satisfactory an image quality without reducing a transfer rate even if image information has a low image area.SOLUTION: An image forming apparatus is equipped with: image area computing means for computing an image area from image information; an image carrier capable of forming an image outside an image region in a main scanning direction; electrifying means for electrifying the image carrier; exposure means for forming a latent image on the image carrier corresponding to the image information; and exposure image area control means for controlling an exposure area in which the exposure means performs exposure to the image carrier based on image information. The exposure image area control means determines an exposure area for a region in which transfer to transfer sheet is not performed in the main scanning direction corresponding to the image area measured in the main scanning direction.
    • 要解决的问题:提供一种图像形成装置,其形成图像质量令人满意的图像,而不降低传输速率即使图像信息具有低图像区域。图像形成装置配备有:图像区域计算装置, 从图像信息计算图像区域; 能够在主扫描方向上形成图像区域外的图像的图像载体; 用于使图像载体通电的通电装置; 用于在图像载体上形成对应于图像信息的潜像的曝光装置; 以及曝光图像区域控制装置,用于根据图像信息控制曝光装置对图像载体进行曝光的曝光区域。 曝光图像区域控制装置确定与在主扫描方向上测量的图像区域相对应的主扫描方向上未转印到转印纸的区域的曝光区域。
    • 73. 发明专利
    • Image forming apparatus and image forming method
    • 图像形成装置和图像形成方法
    • JP2013190683A
    • 2013-09-26
    • JP2012057836
    • 2012-03-14
    • Ricoh Co Ltd株式会社リコー
    • KANEKO SATOSHIISHIBASHI HITOSHIYAMANE ATSUSHISUZUKI SHINGOKUDO KOICHIHIRAI HIDEJIKATO SHINJI
    • G03G15/00
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus that forms images by using toner and an image forming method in such image forming apparatus capable of adjusting density of images to reduce density unevenness of images due to sensitivity unevenness caused by rotational deflection of image carriers, while forming a plurality of types of images for density unevenness detection and suppressing toner consumption and required time.SOLUTION: First and second conditions for first and second elements are determined to adjust density of images on the basis of density unevenness of images having different densities with each other for at least one circumferential length of image carriers 2Y, M, C, K detected by image density detection means 30, and potential distribution of surface potential for the at least one circumferential length of the image carriers 2Y, C, M, K detected by potential detection means 19Y, C, M, K; and first image forming means 5Y, C, M, K and second image forming means 3Y, M, C, K are operated.
    • 要解决的问题:提供一种通过使用调色剂形成图像的图像形成装置和能够调整图像浓度的图像形成装置中的图像形成方法,以减少由于图像载体的旋转偏转引起的灵敏度不均匀引起的图像的浓度不均匀 同时形成用于浓度不均匀检测的多种类型的图像并且抑制调色剂消耗和所需时间。解决方案:确定第一和第二元素的第一和第二条件以基于具有不同密度的图像的浓度不均匀性来调节图像的浓度 对于由图像浓度检测装置30检测到的图像载体2Y,M,C,K的至少一个圆周长度,以及图像载体2Y,C,M的至少一个圆周长度的表面电位的电位分布, K由电位检测装置19Y,C,M,K检测; 并且操作第一图像形成装置5Y,C,M,K和第二图像形成装置3Y,M,C,K。
    • 74. 发明专利
    • Image forming apparatus and image forming method
    • 图像形成装置和图像形成方法
    • JP2013190679A
    • 2013-09-26
    • JP2012057792
    • 2012-03-14
    • Ricoh Co Ltd株式会社リコー
    • KANEKO SATOSHIYAMANE ATSUSHIKUDO KOICHIKATO SHINJIISHIBASHI HITOSHIHIRAI HIDEJISUZUKI SHINGO
    • G03G15/00G03G15/06G03G15/08
    • G03G13/22G03G15/5037G03G15/5041
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus that forms images by using toner and an image forming method in such image forming apparatus capable of adjusting density of images to reduce density unevenness of images due to rotational deflection and image density of image carriers, while suppressing toner consumption and required time.SOLUTION: A first condition for suppressing unevenness in image density caused by developing gap fluctuation components of image carrier 40Y, C, M, K is determined on the basis of unevenness of an image detected by image density detection means 52, and a second condition for suppressing unevenness in image density caused by image density is determined on the basis of potential distribution of surface potential detected by potential detection means 56Y, C, M, K when the image is formed and the density unevenness. First image forming means 42Y, C, M, K and second image forming means 43Y, C, M, K are operated according to the determined first and second conditions.
    • 要解决的问题:为了提供一种通过使用调色剂和图像形成方法形成图像的图像形成装置,该图像形成装置能够调节图像的浓度,以减少由于图像载体的旋转偏转和图像浓度引起的图像的浓度不均匀性, 同时抑制调色剂消耗和所需时间。解决方案:基于通过图像浓度检测检测到的图像的不均匀性来确定用于抑制由图像载体40Y,C,M,K的间隙波动成分的显影引起的图像浓度不均匀性的第一条件 基于由图像形成时的电位检测单元56Y,C,M,K检测出的表面电位的电位分布和浓度不均匀性来确定用于抑制由图像浓度引起的图像浓度不均匀性的第二条件。 根据确定的第一和第二条件,操作第一图像形成装置42Y,C,M,K和第二图像形成装置43Y,C,M,K。
    • 75. 发明专利
    • Image formation device
    • 图像形成装置
    • JP2013125132A
    • 2013-06-24
    • JP2011273392
    • 2011-12-14
    • Ricoh Co Ltd株式会社リコー
    • HIRAI HIDEJIKANEKO SATOSHIKATO SHINJISUZUKI SHINGOKUDO KOICHIYAMANE ATSUSHI
    • G03G15/00
    • PROBLEM TO BE SOLVED: To provide an image formation device that can appropriately reduce unevenness of concentrations for different types of images having different concentrations without consuming toner at controlling correction.SOLUTION: A first electrostatic latent image pattern is formed on a photoreceptor for detection (S11), a first image formation condition is determined based on detection results of a potential of the electrostatic latent image (S13a, S14a), and toner image formation means is controlled based on the determined first image formation condition (S15a). Further, a second electrostatic latent image pattern different from the first one is formed in a photoreceptor for detection (S12), a second image formation condition is determined based on detection results of a potential of the electrostatic latent image (S13b, S14b), and toner image formation means is controlled based on the determined second image formation condition (S15b).
    • 要解决的问题:提供一种图像形成装置,其可以适当地减少不同类型的具有不同浓度的图像的浓度的不均匀性,而不会在调节调色剂的同时消耗调色剂。 解决方案:在用于检测的感光体上形成第一静电潜像图案(S11),基于静电潜像(S13a,S14a)的电位的检测结果和调色剂图像来确定第一图像形成条件 基于确定的第一图像形成条件来控制形成装置(S15a)。 此外,在用于检测的感光体中形成与第一静电潜像图案不同的第二静电潜像图案(S12),基于静电潜像的电位(S13b,S14b)的检测结果确定第二图像形成条件,以及 基于确定的第二图像形成条件来控制调色剂图像形成装置(S15b)。 版权所有(C)2013,JPO&INPIT
    • 76. 发明专利
    • Image forming device
    • 图像形成装置
    • JP2012163645A
    • 2012-08-30
    • JP2011022284
    • 2011-02-04
    • Ricoh Co Ltd株式会社リコー
    • HIRAI HIDEJIKANEKO SATOSHIKATO SHINJIYAMANE ATSUSHIKUDO KOICHISUZUKI SHINGO
    • G03G15/00G03G15/16
    • PROBLEM TO BE SOLVED: To provide an image forming device that properly reduces density unevenness of multiple kinds of images having different densities.SOLUTION: A toner image of a first image pattern is formed on an intermediate transfer belt 1. A first image formation condition is determined on the basis of the result of detecting the density of the toner image. Toner image forming means is controlled on the basis of the first image formation condition. A toner image of a second image pattern different from the first image pattern is formed on the intermediate transfer belt 1. A second image formation condition is determined on the basis of the result of detecting the density of the toner image. The toner image forming means is controlled on the basis of the second image formation condition.
    • 要解决的问题:提供一种适当地减小具有不同密度的多种图像的浓度不均匀性的图像形成装置。 解决方案:第一图像图案的调色剂图像形成在中间转印带1上。基于检测调色剂图像的浓度的结果确定第一图像形成条件。 基于第一图像形成条件来控制调色剂图像形成装置。 在中间转印带1上形成与第一图像图案不同的第二图像图案的调色剂图像。基于检测调色剂图像的浓度的结果确定第二图像形成条件。 调色剂图像形成装置基于第二图像形成条件进行控制。 版权所有(C)2012,JPO&INPIT
    • 77. 发明专利
    • Image forming apparatus, image forming system, and post-processing apparatus
    • 图像形成装置,图像形成系统和后处理装置
    • JP2010066516A
    • 2010-03-25
    • JP2008232735
    • 2008-09-10
    • Ricoh Co Ltd株式会社リコー
    • HIRAI HIDEJI
    • G03G21/00B41J29/38H04N1/00
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus, an image forming system, and a post-processing apparatus, capable of quickly starting the decision of image quality and deciding the image quality according to the request of a user. SOLUTION: A sample image having the image quality desired by the user, obtained by adjusting the image forming apparatus is detected by an image detecting sensor unit 91 being an image detecting means, to obtain reference image data, in pre-processing for continuously forming images. When the reference image data are obtained, the images are continuously formed and an output image formed on a transfer paper is detected by the image detecting sensor unit 91, to obtain image data for inspection, while the images are continuously formed. The reference image data and the image data for inspection are compared with each other, to decide the image quality of the output image, the transfer paper on which the output image decided to be an excellent image is formed is ejected to a second paper ejection tray 82 and the transfer paper on which the output image decided to be a defective image is formed is ejected to a first paper ejection tray 81. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种图像形成装置,图像形成系统和后处理装置,其能够根据用户的请求快速地开始图像质量的决定并确定图像质量。 解决方案:通过调整图像形成装置获得的具有用户期望的图像质量的样本图像由作为图像检测装置的图像检测传感器单元91检测,以在预处理中获得参考图像数据 不断形成图像。 当获得参考图像数据时,图像被连续地形成,并且由图像检测传感器单元91检测在转印纸上形成的输出图像,以在连续形成图像的同时获得用于检查的图像数据。 将参考图像数据和用于检查的图像数据彼此进行比较,以确定输出图像的图像质量,将其上形成为优异图像的输出图像的转印纸排出到第二排纸托盘 82和输出图像被确定为缺陷图像的转印纸被排出到第一排纸托盘81中。(C)2010,JPO&INPIT
    • 78. 发明专利
    • Abnormality determining method, and abnormality determining apparatus, and image forming apparatus using same
    • 异常判定方法,异常判定装置以及使用相同的图像形成装置
    • JP2010049285A
    • 2010-03-04
    • JP2009271441
    • 2009-11-30
    • Ricoh Co Ltd株式会社リコー
    • SHOJI HISAFUMISATO OSAMUHIRAI HIDEJINAKAGAWA YOSHINORIHOSHINO SEIJIOUCHI SATOSHIMATSUURA NEKKANAKAZATO YASUFUMIMIYAWAKI KATSUAKIYAMADA MASAAKITAKAHASHI TOMOKOSETO TAKASHI
    • G03G21/00
    • PROBLEM TO BE SOLVED: To provide an abnormality determining apparatus capable of avoiding mistaken determinations due to the normal value of information obtained by an information obtaining portion 501 differing according to the content of specific information such as operating mode setting, and deterioration in determination precision due to a change in the user of a detection subject.
      SOLUTION: The abnormality determining apparatus includes an information storage portion 503 for storing normal index information serving as an index of a normal state of the detection subject, the information obtaining portion 501 for obtaining a plurality of types of information, and an abnormality determining portion 502 for determining the presence of an abnormality in the detection subject on the basis of the normal index information stored in the information storage portion 503, and the information obtained by the information obtaining portion 501. The information storage portion 503 stores a plurality of pieces of normal index information having different values. The abnormality determining portion 502 switches, at a prescribed timing, normal index information to be used to determine the presence of an abnormality in the detection subject from the plurality of pieces of normal index information.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 解决的问题:提供一种异常判定装置,其能够避免由于信息获取部分501获得的信息的正常值根据诸如操作模式设置的特定信息的内容而不同而导致的错误确定,并且劣化 由于检测对象的用户的变化导致的确定精度。 解决方案:异常判定装置包括信息存储部分503,用于存储用作检测对象的正常状态的索引的正常索引信息,用于获得多种类型的信息的信息获取部分501和异常 确定部分502,用于基于存储在信息存储部分503中的正常索引信息和由信息获取部分501获得的信息来确定检测对象中异常的存在。信息存储部分503存储多个 具有不同值的正常索引信息。 异常确定部分502在规定的定时切换用于从多条正常索引信息确定检测对象中的异常的存在的正常索引信息。 版权所有(C)2010,JPO&INPIT
    • 80. 发明专利
    • Image forming apparatus
    • 图像形成装置
    • JP2010015110A
    • 2010-01-21
    • JP2008177277
    • 2008-07-07
    • Ricoh Co Ltd株式会社リコー
    • ISHIBASHI HITOSHIHASEGAWA MAKOTOFUJIMORI KOTAHIRAYAMA YUJITAKEUCHI NOBUTAKAYOSHIDA AKIRAHIRAI HIDEJITANAKA KAYOKO
    • G03G15/01G03G15/00
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus which is capable of suppressing the decrease in the density of a detecting pattern formed in a non-image forming area, during image forming operation. SOLUTION: A distance from the trailing edge of an image being an image forming area to the leading edge of the detecting pattern is longer than the circumferential length of the surface of a developing roller being a developer carrier, so that the detecting pattern can be formed in such a state that the influence of the image area ratio of the last image is suppressed. Therefore, the decrease in the density of the detecting pattern when the image area ratio of the last image is high can be suppressed. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种能够抑制在图像形成操作期间形成在非图像形成区域中的检测图案的浓度降低的图像形成装置。 解决方案:距离作为图像形成区域的图像的后缘到检测图案的前缘的距离比作为显影剂载体的显影辊的表面的圆周长度长,使得检测图案 可以在抑制最后图像的图像面积比的影响的状态下形成。 因此,可以抑制当最终图像的图像面积比高时检测图案的浓度的降低。 版权所有(C)2010,JPO&INPIT