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1. 发明专利

JP2013240952A Tone correction system and image forming device 审中-公开
标题翻译：音调校正系统和图像形成装置
公开(公告)号：JP2013240952A
公开(公告)日：2013-12-05
申请号：JP2012116475
申请日：2012-05-22
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： FUNABASHI KAZUKI , SONE TAKURO , HODOSHIMA TAKASHI , TACHIBANA HIROHITO
IPC分类号： B41J2/44 , G06T5/00 , H04N1/407 , H04N1/46 , H04N1/60
摘要： PROBLEM TO BE SOLVED: To make correction to obtain tone reproducibility having no local tone step in a tone reproduction method for controlling an exposure amount of each pixel based on input image data after pseudo halftone processing.SOLUTION: A correction pattern constituted by the gradation of each color in which an overall tone value changes continuously is formed on a recording medium (S1), and a color value of each tone of the correction pattern is acquired by an image measuring device (S2). Based on the acquired color value of each tone value and a color value of the adjacent tone value, a change amount of the color value of each tone value is calculated (S3). When the calculated change amount is larger than a predetermined value, it is determined that a tone step is present (S4). A pixel value and an exposure amount corresponding to the tone step are identified (S5), and an exposure amount in an exposure table is corrected so that the change amount decreases (S6).
摘要翻译：要解决的问题：在进行伪半色调处理之后，基于输入图像数据，在用于控制每个像素的曝光量的色调再现方法中进行校正以获得没有局部色调步骤的色调再现性。解决方案：在记录介质（S1）上形成其中整体色调值连续变化的每种颜色，并且通过图像测量装置获取校正图案的每个色调的颜色值（S2）。基于所获得的每个色调值的颜色值和相邻色调值的颜色值，计算每个色调值的颜色值的变化量（S3）。当计算出的改变量大于预定值时，确定存在色阶（S4）。识别与色调步骤相对应的像素值和曝光量（S5），并且校正曝光表中的曝光量使得变化量减小（S6）。

2. 发明专利

JP2012159747A Belt drive device, and image forming apparatus 审中-公开
标题翻译：皮带驱动装置和图像形成装置
公开(公告)号：JP2012159747A
公开(公告)日：2012-08-23
申请号：JP2011020147
申请日：2011-02-01
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HODOSHIMA TAKASHI
IPC分类号： G03G15/16 , G03G15/00 , G03G21/00
摘要： PROBLEM TO BE SOLVED: To provide a belt drive device, the enlargement of which is further suppressed than before.SOLUTION: An image forming apparatus includes: an endless intermediate transfer belt 61; and a plurality of tension rollers for laying the intermediate transfer belt 61 around a part of the peripheral surface thereof in a tensioned state, while being disposed inside a loop of the intermediate transfer belt 61. The image forming apparatus rotationally drives at least any one of the plurality of tension rollers to endlessly move the intermediate transfer belt 61. The image forming apparatus is further provided with: a driven roller 92 that is driven-rotated about a rotation shaft extending in the width direction of the intermediate transfer belt 61 while being brought into contact with a rear face, which is an inner peripheral surface of the loop of the intermediate transfer belt 61; a swingable support plate 91 that holds the driven roller 92 along with a roller support body 93 in the belt width direction in a reciprocable manner; and a displacement sensor 95 that detects the amount of movement of the driven roller 92 in the belt width direction.
摘要翻译：要解决的问题：提供一种带状驱动装置，其放大比以前更进一步抑制。解决方案：图像形成装置包括：无端中间转印带61; 以及多个张紧辊，用于将中间转印带61围绕其周面的一部分以张紧状态放置，同时设置在中间转印带61的环的内部。图像形成装置旋转地驱动多个张紧辊使中间转印带61不断地移动。图像形成装置还设置有从动辊92，该从动辊92围绕中间转印带61的宽度方向延伸的旋转轴被驱动旋转，同时带动与作为中间转印带61的环的内周面的后表面接触; 一个可摆动支撑板91，其以可往复的方式沿着带宽度方向将滚筒支承体93与滚轮支撑体93一起保持; 以及位移传感器95，其检测从动辊92在带宽度方向上的移动量。版权所有（C）2012，JPO＆INPIT

3. 发明专利

JP2012093593A Image forming device 有权
标题翻译：图像形成装置
公开(公告)号：JP2012093593A
公开(公告)日：2012-05-17
申请号：JP2010241558
申请日：2010-10-27
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HASHIMOTO TAKASHI , ANDO TOSHIYUKI , HODOSHIMA TAKASHI , KATO MASAHIKO
IPC分类号： G03G15/16 , G03G15/20 , G03G21/00 , G03G21/14
摘要： PROBLEM TO BE SOLVED: To provide an image forming device capable of suppressing variation in speed of a belt image carrier at the timing when transfer material is fed into a transfer nip.SOLUTION: An image forming device comprises: a loop shaped belt image carrier stretched around and supported by a plurality of tension rollers while being endlessly moved; a transfer roller disposed opposite to one of the plurality of tension rollers through the belt image carrier and forming a transfer nip by being brought into contact with a top surface of the belt image carrier as an outside surface of a loop thereof; transfer means for transferring an image carried on the top surface to transfer material nipped in the transfer nip; a contact member brought into contact with a region positioned upstream from the transfer nip of the belt image carrier in a movement direction of the belt image carrier in the vicinity of the transfer roller; and association means for supporting the contact member and the transfer roller and displacing the contact member in a direction in which the tensile force of the belt image carrier increases by associating the contact member with a displacement of the transfer roller at the timing when the transfer material is fed into the transfer nip.
摘要翻译：要解决的问题：提供一种能够抑制转印材料被送入转印辊隙时的带图像载体的速度变化的图像形成装置。解决方案：图像形成装置包括：环状带状图像载体，其在多个张力辊周围被拉伸并被不断地移动; 转印辊，其通过带图像载体与所述多个张紧辊中的一个相对设置，并通过与所述带图像载体的顶表面作为其环的外表面接触而形成转印辊隙; 用于将承载在顶表面上的图像转印到夹持在转印夹持部中的转印材料的转印装置; 接触构件沿着带图像载体在转印辊附近的运动方向与位于带图像载体的转印辊隙上游的区域接触; 以及联结装置，用于支撑接触构件和转印辊，并且使接触构件沿着带状图像载体的张力增大的方向移位，所述方向通过使接触构件与转印辊的位移相关联而在转印材料被送入转印辊隙。版权所有（C）2012，JPO＆INPIT

4. 发明专利

JP2012063565A Belt unit, belt driving device, and image forming device 有权
标题翻译：皮带单元，皮带驱动装置和图像形成装置
公开(公告)号：JP2012063565A
公开(公告)日：2012-03-29
申请号：JP2010207520
申请日：2010-09-16
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： OKAMOTO TOSHIHIRO , KIBUNE HIDEAKI , HODOSHIMA TAKASHI , KUDO KOICHI
IPC分类号： G03G15/16 , G03G15/01
摘要： PROBLEM TO BE SOLVED: To reduce a superposition deviation in a roller axial direction of a toner image due to inclining of a deviation correcting roller 64.SOLUTION: A belt unit comprises a deviation correcting roller 64 for correcting a belt skew of an intermediate transfer belt 61 by taking a posture in which own roller axial line is inclined to a roller axial line of the other tension roller by swinging around a swing axis line 910 as a center, and a swing bracket for swingably holding the deviation correcting roller 64 around the swing axis line 910 as the center. The swing bracket swingably holds the deviation correcting roller 64 in a state where the swing axis line 910 is extended along the tangent line with respect to a part in which the intermediate transfer belt 61 is laid around out of the peripheral surface of the deviation correcting roller 64.
摘要翻译：要解决的问题：减少由于偏差校正辊64的倾斜引起的调色剂图像的辊轴方向上的叠加偏移。解决方案：带单元包括偏差校正辊64，用于校正带通过使自身的辊轴线以围绕作为中心的摆动轴线910摆动的方式相对于另一个张力辊的辊轴线倾斜的姿态，以及用于可摆动地保持偏差的摆动支架，使中间转印带61偏斜以摆动轴线910为中心的修正辊64。摆动支架将偏心校正辊64摆动地保持在摆动轴线910相对于中间转印带61围绕偏离修正辊的周面摆放的部分沿切线延伸的状态 64.版权所有（C）2012，JPO＆INPIT

5. 发明专利

JP2009198598A Transfer device and image forming apparatus 审中-公开
标题翻译：传输设备和图像形成设备
公开(公告)号：JP2009198598A
公开(公告)日：2009-09-03
申请号：JP2008037847
申请日：2008-02-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HODOSHIMA TAKASHI , ANDO TOSHIYUKI , OIKAWA TATSUHIKO , HOSHINO SEIJI , HASHIMOTO TAKASHI , NOGUCHI EIGO , WATANABE TETSUO
IPC分类号： G03G15/16 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To suppress the occurrence of line-shaped density unevenness caused by sudden load variation when the leading edge of cardboard advances into a secondary transfer nip or when the trailing edge of the cardboard is pulled out from the secondary transfer nip, and also to suppress occurrence of skew of a recording sheet caused by errors of pressure of the secondary transfer nip.
SOLUTION: A first distance that is a distance between the surface of an intermediate transfer belt 61 and the rotary shaft of a secondary transfer roller 72 on one end side in the width direction of the intermediate transfer belt 61 is adjusted by driving of a front cam motor 79F, while a second distance that is the distance between the surface of the intermediate transfer belt 61 and the rotary shaft of the secondary transfer roller 72 on the other end side in the width direction of the intermediate transfer belt 61 is adjusted by driving of a rear cam motor 79R. Cam motors which can be driven independently of each other are used as the cam motors.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了抑制当纸板的前缘进入二次转印辊隙时或者当纸板的后缘从二次转印中拉出时由突然的负载变化引起的线状浓度不均匀的发生并且还抑制由二次转印辊隙的压力误差引起的记录纸的偏斜的发生。解决方案：中间转印带61的表面与中间转印带61的宽度方向一端侧的二次转印辊72的旋转轴之间的距离的第一距离通过驱动在中间转印带61的宽度方向的另一端侧的中间转印带61的表面与二次转印辊72的旋转轴之间的距离为第二距离的前凸轮电动机79F 通过驱动后凸轮马达79R。可以彼此独立地驱动的凸轮马达用作凸轮马达。版权所有（C）2009，JPO＆INPIT

6. 发明专利

JP2009153250A Drive apparatus, image forming apparatus 有权
标题翻译：驱动装置，图像形成装置
公开(公告)号：JP2009153250A
公开(公告)日：2009-07-09
申请号：JP2007326798
申请日：2007-12-19
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NOGUCHI EIGO , ANDO TOSHIYUKI , HODOSHIMA TAKASHI , HOSHINO SEIJI , OIKAWA TATSUHIKO , HASHIMOTO TAKASHI
IPC分类号： H02P29/00 , B65H7/02 , G03G15/00 , G03G15/16 , G05B11/32
CPC分类号： G03G15/2064 , G03G15/161 , G03G15/5004 , G03G2221/1657
摘要： PROBLEM TO BE SOLVED: To provide a drive apparatus for inexpensively and properly feedforward controlling a drive means, and to provide an image forming apparatus using the drive apparatus.
SOLUTION: The drive apparatus includes: a drive source; a driven section driven by the drive source; a speed fluctuation detection means for detecting an aperiodic speed fluctuation in the driven section; and a drive control section for performing feedforward control by using a feedforward target value preset so as to reduce the aperiodic speed fluctuation detected by the speed fluctuation detection means. The speed fluctuation detected by the speed fluctuation detection means is a sinusoidal wave having a predetermined time duration and a predetermined amplitude. The feedforward target value is calculated from the amplitude and the time duration to represent a rectangular waveform approximating the sinusoidal waveform.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于廉价且适当地前馈控制驱动装置的驱动装置，并且提供使用该驱动装置的图像形成装置。解决方案：驱动装置包括：驱动源; 由驱动源驱动的驱动部分; 用于检测从动部分中的非周期性速度波动的速度波动检测装置; 以及驱动控制部分，用于通过使用预设的前馈目标值来执行前馈控制，以便减少由速度波动检测装置检测到的非周期性速度波动。由速度波动检测装置检测的速度波动是具有预定持续时间和预定振幅的正弦波。根据幅度和持续时间来计算前馈目标值，以表示接近正弦波形的矩形波形。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2008310254A Rotational information detector and image forming device 审中-公开
标题翻译：旋转信息检测器和图像形成装置
公开(公告)号：JP2008310254A
公开(公告)日：2008-12-25
申请号：JP2007160303
申请日：2007-06-18
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HODOSHIMA TAKASHI
IPC分类号： G03G15/00 , F16D1/08 , G01D5/12
摘要： PROBLEM TO BE SOLVED: To provide a rotational information detector excellent in assemblability of an encoder (member with rotational information to be detected) and a sensor (detecting member), and capable of reducing an assembling space to cope with compactification of the detector, and an image forming device provided with the detector. SOLUTION: This rotational information detector is provided with the member 110 with the rotational information to be detected, engaged with a rotary shaft 101, and formed with positional information for detecting the rotational information of the rotary shaft, and the detecting member 113 for reading the positional information of the member with the rotational information to be detected, and for detecting the rotational information of the member with the rotational information to be detected. An engaging protrusion 111d is provided in either of a driving gear 106 engaged in a position opposed to the member with the rotational information to be detected and for transmitting drive to the rotary shaft, or the member with the rotational information to be detected, an engaging recess 106b is provided in the other, and rotational directions of the member with the rotational information to be detected and the driving gear are fixed with respect to the rotary shaft, by engaging the engaging protrusion with the engaging recess. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种编码器（具有待检测的旋转信息的构件）和传感器（检测构件）的组合性优异的旋转信息检测器，并且能够减少组装空间以应对检测器，以及设置有检测器的图像形成装置。＆lt; P＆gt;解决方案：该旋转信息检测器具有要被检测的旋转信息的构件110与旋转轴101接合，并且形成有用于检测旋转轴的旋转信息的位置信息，并且检测构件113 用于利用要检测的旋转信息读取构件的位置信息，以及用于检测具有要检测的旋转信息的构件的旋转信息。啮合突起111d设置在驱动齿轮106中的任何一个中，该驱动齿轮106与被检测的旋转信息啮合在与构件相对的位置中，并且用于将驱动传递到旋转轴或具有要检测的旋转信息的构件，另一方面设置有凹部106b，并且通过使卡合突起与卡合凹部卡合而使具有要检测的旋转信息的构件和驱动齿轮相对于旋转轴固定的旋转方向。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2008262038A Belt driving transfer device and image forming apparatus 有权
标题翻译：皮带驱动传输装置和图像形成装置
公开(公告)号：JP2008262038A
公开(公告)日：2008-10-30
申请号：JP2007104880
申请日：2007-04-12
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KOMATSU MAKOTO , ANDO TOSHIYUKI , HASHIMOTO TAKASHI , HOSHINO SEIJI , OIKAWA TATSUHIKO , NOGUCHI EIGO , MATSUDA HIROMICHI , HODOSHIMA TAKASHI
IPC分类号： G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide a belt driving transfer device which does not transmit transitional load fluctuation caused in rush-in or projection timing of paper in a nip part of a transfer part to a primary transfer part where a photoreceptor drum and a belt come into contact with each other, so as to decrease fluctuation due to impact, and an image forming apparatus on which the belt driving transfer device is mounted. SOLUTION: The belt driving transfer device includes a motor that is a driving source, a belt image carrier 7 driven by the motor, and a press-contact member 8 made to press-contact with the belt image carrier 7 so as to form a press-contact part in between, and transfers an image to a recording medium by making the recording medium pass through the press-contact part. A movable path changing member 23 for deciding the conveyance path of the belt image carrier 7 is provided at a more upstream part in the conveying direction of the belt image carrier 7 than the press-contact part, and is made movable in accordance with the displacement amount of the press-contact member 8. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种皮带驱动传送装置，其不会在传送部分的夹持部分中的纸张的入口或投影定时中发生过渡载荷波动，所述传送部分转印到感光鼓和皮带彼此接触，从而减少由于冲击而引起的波动;以及图像形成装置，其上安装有皮带驱动传送装置。皮带驱动传送装置包括作为驱动源的马达，由马达驱动的皮带图像载体7和与带图像载体7压接的压接部件8，以便在其间形成压接部分，并通过使记录介质通过压接部分将图像转印到记录介质上。用于决定带图像载体7的输送路径的可动路径改变构件23设置在带图像载体7的输送方向上比压接部分更上游的部分，并且可根据位移印刷接触件8的数量。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2008197062A Method of modeling transfer belt drive mechanism and method of supporting design of control system using the same 有权
标题翻译：传动带驱动机构的建模方法及其使用控制系统设计的方法
公开(公告)号：JP2008197062A
公开(公告)日：2008-08-28
申请号：JP2007035359
申请日：2007-02-15
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： ANDO TOSHIYUKI , HASHIMOTO TAKASHI , HOSHINO SEIJI , OIKAWA TATSUHIKO , NOGUCHI EIGO , MATSUDA HIROMICHI , KOMATSU MAKOTO , HODOSHIMA TAKASHI
IPC分类号： G01M13/00 , G03G15/16 , G06F17/50
CPC分类号： Y02T10/82
摘要： PROBLEM TO BE SOLVED: To provide a method of modeling a transfer belt drive mechanism capable of reducing the design and analysis time without resulting in a complicated analysis model in the method of modeling the transfer belt drive mechanism of an image forming apparatus.
SOLUTION: In the method of modeling the transfer belt drive mechanism including a transfer unit part, a rotational drive part, and a joint part, each of the transfer unit part and the rotational drive part is regarded as an independent inertial system including one moment of inertia. The joint part connecting them is assumed as a virtual one having no moment of inertia. The transfer belt drive mechanism is modeled using an analysis model of two inertial systems in which a coefficient of viscosity around a drive roller of the transfer unit part and a coefficient of viscosity around an output shaft of a rotational drive means of the rotational drive part are taken into account.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种对能够减少设计和分析时间的转印带驱动机构进行建模的方法，而不会在对成像设备的转印带驱动机构进行建模的方法中产生复杂的分析模型。解决方案：在对包括转印单元部分，旋转驱动部分和接合部分的转印带驱动机构进行建模的方法中，转印单元部分和旋转驱动部分中的每一个被认为是独立的惯性系统，包括一个惯性矩。连接它们的连接部分被假设为没有惯性矩的虚拟的部分。转印带驱动机构使用两个惯性系统的分析模型来建模，其中转印单元部分的驱动辊周围的粘度系数和旋转驱动部分的旋转驱动装置的输出轴附近的粘度系数是考虑到版权所有（C）2008，JPO＆INPIT

10. 发明专利

JP2008191358A Transfer device and image forming apparatus using the same 审中-公开
标题翻译：传送装置和使用其的图像形成装置
公开(公告)号：JP2008191358A
公开(公告)日：2008-08-21
申请号：JP2007025104
申请日：2007-02-05
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HODOSHIMA TAKASHI , WATANABE TETSUO , ANDO TOSHIYUKI , HOSHINO SEIJI , HASHIMOTO TAKASHI , MATSUDA HIROMICHI , KOMATSU MAKOTO , NOGUCHI EIGO , OIKAWA TATSUHIKO
IPC分类号： G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide a transfer device capable of preventing image deterioration due to a speed change of an intermediate transfer belt, reducing power consumption, and extending the life of a drive mechanism, such as a gear, used to rotate the intermediate transfer belt, and to provide an image forming apparatus.
SOLUTION: The thickness of transfer paper, which is a sheet material to be conveyed to a secondary transfer nip, is detected by a sheet thickness detecting device 91 serving as a sheet thickness detecting means. As a result of the detection, only when the thickness of the transfer paper may cause a load change that may affect an image, a load application means 80 applies load to the secondary transfer opposite roller 16.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够防止由于中间转印带的速度变化引起的图像劣化的转印装置，降低功耗，并且延长用于旋转的驱动机构（例如齿轮）的寿命中间转印带，并提供图像形成装置。解决方案：作为输送到二次转印辊隙的片状材料的转印纸的厚度由用作片材厚度检测装置的片材厚度检测装置91检测。作为检测的结果，只有当转印纸的厚度可能引起可能影响图像的负载变化时，负载施加装置80对二次转印对向辊16施加负载。版权所有（C）2008 ，JPO＆INPIT

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