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1. 发明专利

JP2014028678A Apparatus for detecting thickness of recording media, image forming apparatus, method for detecting thickness of recording media, and program 审中-公开
标题翻译：用于检测记录介质厚度的装置，图像形成装置，用于检测记录介质的厚度的方法和程序
公开(公告)号：JP2014028678A
公开(公告)日：2014-02-13
申请号：JP2012169695
申请日：2012-07-31
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： NISHIZAKI SHINGO , OZAKI HIROSUKE , IKEDA YUJI , FUNADA NAOHIRO , OKAMURA HISASHI , KONDO TOMOHIDE , SATO MASASHI , WAKABAYASHI ISAMU
IPC分类号： B65H7/02 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for detecting the thickness of a recording media which can detect the thickness of the recording media with high accuracy with a simple composition.SOLUTION: The apparatus for detecting the thickness of the recording media includes transporting means 55 for transporting the recording media P while holding the same between a drive roller 55a and a driven roller 55b brought into contact with the drive roller to be rotated, position measuring means 57 for measuring a position of the driven roller to the drive roller in the approaching/separating direction and outputting the measured value, correction value calculating means which calculates an average value after obtaining a plurality of measured values and calculates a correction value for correcting the measured value based on the average value, and thickness calculating means for calculating the thickness of the recording media on the basis of a value obtained by correcting measured values measured when transporting and not transporting the recording media with the transporting means by the correction value.
摘要翻译：要解决的问题：提供一种用于检测记录介质的厚度的装置，其可以以简单的组成以高精度检测记录介质的厚度。解决方案：用于检测记录介质的厚度的装置包括传送装置55 用于在将记录介质P保持在与要旋转的驱动辊接触的驱动辊55a和从动辊55b之间传送记录介质P的位置测量装置57用于在接近的状态下测量从动辊到驱动辊的位置 /分离方向并输出测量值;校正值计算装置，其在获得多个测量值之后计算平均值，并且计算用于基于平均值校正测量值的校正值;以及厚度计算装置，用于计算厚度基于通过校正测量值而获得的值的记录介质在传送装置时不用传送装置传送记录介质时测量。

2. 发明专利

JP2014012564A Multi feed detection device, image forming device, multi feed detection method and program 审中-公开
标题翻译：多进料检测装置，图像形成装置，多进料检测方法和程序
公开(公告)号：JP2014012564A
公开(公告)日：2014-01-23
申请号：JP2012149649
申请日：2012-07-03
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： IKEDA YUJI , NISHIZAKI SHINGO , OZAKI HIROSUKE , WAKABAYASHI ISAMU , SATO MASASHI , OKAMURA HISASHI , FUNADA NAOHIRO , KONDO TOMOHIDE
IPC分类号： B65H7/12
摘要： PROBLEM TO BE SOLVED: To provide a multi feed detection device capable of highly accurately detecting a multi feed.SOLUTION: The multi feed detection device 101 includes: conveying means for holding a sheet between a drive roller 110a and a driven roller 110b which is driven to rotate being in contact with the drive roller, conveying stopping means to stop the drive roller when the conveying means conveys the sheet, thickness detection means 120 for detecting a thickness of the sheet on the basis of a position of the driven roller when the sheet is not conveyed and conveying is stopped by the conveying stopping means, sheet length detection means 140 for detecting a length of the sheet in conveying direction and detecting an error when the length is a predetermined length or longer, and multi feed detection means for detecting and determining a multi feed of the sheet on the basis of the thickness of the sheet detected by the thickness detection means. When X represents a length between a tip of the sheet in conveying direction and the conveying means when the drive roller is stopped by the conveying stopping means, Y represents a length of the sheet in conveying direction, and (Y+Z) represents a predetermined length, the relation of Z≤X≤Y is satisfied.
摘要翻译：要解决的问题：提供能够高精度地检测多进给的多进给检测装置。解决方案：多进给检测装置101包括：传送装置，用于将片材保持在驱动辊110a和被驱动的从动辊110b之间旋转与驱动辊接触时，当输送装置输送纸张时，传送停止装置来停止驱动辊;厚度检测装置120，用于根据从动辊的位置检测纸张的厚度，传送停止装置停止输送，纸张长度检测装置140，用于检测纸张在传送方向上的长度，并且当长度为预定长度或更长时检测出错误;以及多进给检测装置，用于检测和基于由厚度检测装置检测到的片材的厚度来确定片材的多次进给。当X表示在传送方向上的片材的末端与传送装置之间的距离，当驱动辊被传送停止装置停止时，Y表示片材在传送方向上的长度，（Y + Z）表示预定的长度，满足Z≤X≤Y的关系。

3. 发明专利

JP2010246098A Apparatus and method for forming image, and program 有权
标题翻译：用于形成图像和程序的装置和方法
公开(公告)号：JP2010246098A
公开(公告)日：2010-10-28
申请号：JP2010058485
申请日：2010-03-15
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HIGASHIYAMA MAKOTO , KAWAI YOSHIAKI , NISHIZAKI SHINGO , KONDO TOMOHIDE , SUZUKI MASAFUMI
IPC分类号： H04N1/409 , B41J2/44 , G03G15/00 , G03G15/01 , G03G21/14 , H04N1/387 , H04N1/46 , H04N1/60
CPC分类号： H04N1/506 , H04N1/3878
摘要： PROBLEM TO BE SOLVED: To obtain high quality image while maintaining smoothness in a step portion of a drawing even in the case where skew correction is performed on an input image that has implemented a halftone process. SOLUTION: An image forming apparatus includes: a skew output control unit 171 that performs skew correction by dividing an input image, that has implemented a halftone process, into image data for each predetermined skew correction range in a main scanning direction; an edge detecting unit 211 that detects whether a pixel at a division position based on the skew correction in the image data is an edge pixel constituting an edge based on concentrations of a set of pixels in a predetermined area including the pixel at the division position and a shift direction based on the skew correction; a correction range determining unit 222 that, if detected that the pixel at the division position is the edge pixel, determines a correction range that is a range of pixels including the edge pixel and to be subjected to concentration correction within the skew correction range; and an edge correcting and output unit 221 that corrects concentrations of the pixels within the correction range. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：即使在对已经实现了半色调处理的输入图像进行歪斜校正的情况下，也可以在图的阶梯部分保持平滑度的同时获得高质量图像。解决方案：图像形成装置包括：偏斜输出控制单元171，其通过将已经实现了半色调处理的输入图像划分成在主扫描方向上的每个预定歪斜校正范围的图像数据中进行歪斜校正; 边缘检测单元211，其基于图像数据中的偏斜校正来检测分割位置处的像素是否是构成边缘的边缘像素，其基于包括分割位置处的像素的预定区域中的像素集合的浓度，以及基于偏斜校正的移位方向; 校正范围确定单元222，如果检测到分割位置处的像素是边缘像素，则确定作为包括边缘像素的像素范围的校正范围，并在倾斜校正范围内进行浓度校正; 以及修正校正范围内的像素的浓度的边缘校正和输出单元221。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2009230110A Image forming device and image forming method of the same 有权
标题翻译：图像形成装置及其图像形成方法
公开(公告)号：JP2009230110A
公开(公告)日：2009-10-08
申请号：JP2009006977
申请日：2009-01-15
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HIGASHIYAMA MAKOTO , SUZUKI MASAFUMI , KONDO TOMOHIDE
IPC分类号： G03G15/00
CPC分类号： H04N1/506
摘要： PROBLEM TO BE SOLVED: To provide an image forming device and an image forming method of the same can inhibit the degradation of image quality by highly precisely correct the increase or decrease of a toner coverage area due to shift and precisely reduce the stripe noises. SOLUTION: An image forming device can precisely correct the density of the image data represented by the correction target pixels so as to increase or decrease the variation area of the toner image of the correction target pixels subtracted with the toner coverage area on the correction target pixels of the toner image of the adjacent pixels by correcting the density of image data represented by the correction target pixel, based on the area on the correction target pixels of the toner image formed corresponding to the density of the image data represented by the adjacent pixels adjacent to the correction target pixels, is can precisely reduce the stripe noise at the output, and can inhibit degradation of image quality. 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及其图像形成方法可以通过高精度地校正由于偏移导致的调色剂覆盖区域的增加或减少，并且精确地减少条纹来抑制图像质量的劣化噪音解决方案：图像形成装置可以精确地校正由校正目标像素表示的图像数据的浓度，以便增加或减少校正目标像素的调色剂图像的变化面积，其中调色剂覆盖区域在基于校正对象像素表示的图像数据的浓度，校正目标象素对应于由与校正对象像素相邻的相邻像素可以精确地减少输出处的条纹噪声，并且可以抑制图像质量的劣化。版权所有（C）2010，JPO＆INPIT

5. 发明专利

JP2014019522A Recording medium thickness detection device, image forming apparatus, recording medium thickness detection method, and program 有权
标题翻译：记录中厚度检测装置，图像形成装置，记录中厚度检测方法和程序
公开(公告)号：JP2014019522A
公开(公告)日：2014-02-03
申请号：JP2012158665
申请日：2012-07-17
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KONDO TOMOHIDE , WAKABAYASHI ISAMU , SATO MASASHI , NISHIZAKI SHINGO , OZAKI HIROSUKE , OKAMURA HISASHI , FUNADA NAOHIRO , IKEDA YUJI
IPC分类号： B65H7/12
摘要： PROBLEM TO BE SOLVED: To provide a recording medium thickness detection device capable of accurately detecting recording medium thickness by preventing the recording medium thickness from being erroneously detected.SOLUTION: In a recording medium thickness detection device, recording medium thickness calculation means acquires a value outputted by position detection means during non-carrying, calculates an inclination from first and last values that are acquired among acquired values each time the number of acquired values reaches a predetermined acquisition number, stores the acquired values in storage means in a case that the inclination is within a predetermined range, discards the values stored in the storage means in a case that the inclination is outside the predetermined range, and calculates an average value of the values stored in the storage means as a reference position in a case that the number of the values stored in the storage means is equal to or greater than the predetermined acquisition number when calculating thickness of the recording medium.
摘要翻译：要解决的问题：提供一种能够通过防止记录介质厚度被错误地检测来精确地检测记录介质厚度的记录介质厚度检测装置。解决方案：在记录介质厚度检测装置中，记录介质厚度计算装置获取输出的值在不携带期间，通过位置检测装置，在每次获取的数值达到预定的获取数量时，从获取值中获取的第一和最后值计算出倾斜度，将获取的值存储在存储装置中，在倾斜度为在预定范围内，在倾斜度超出预定范围的情况下丢弃存储在存储装置中的值，并且在存储装置的数量的情况下，计算存储在存储装置中的值的平均值作为参考位置存储在存储装置中的值等于或大于预设在计算记录介质的厚度时削弱采集数。

6. 发明专利

JP2010217786A Fixing device and image forming apparatus 审中-公开
标题翻译：固定装置和图像形成装置
公开(公告)号：JP2010217786A
公开(公告)日：2010-09-30
申请号：JP2009067071
申请日：2009-03-18
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KONDO TOMOHIDE
IPC分类号： G03G15/20 , H05B3/00
摘要： PROBLEM TO BE SOLVED: To provide a fixing device and an image forming apparatus capable of shortening startup time while suppressing generation of flicker and a harmonic current.
SOLUTION: The fixing device includes: a fixing heater 10; a temperature detection sensor 11 detecting the temperature of the fixing heater 10; a fixing heater drive circuit 12 including a triac drive circuit 16 driving the fixing heater 10 by a triac system and an inverter drive circuit 17 driving the fixing heater 10 by an inverter system and driving the fixing heater 10; and a fixing heater temperature control part 13 controlling the fixing heater drive circuit 12. The fixing heater temperature control part 13 drives the fixing heater 10 by controlling either the triac drive circuit 16 or the inverter drive circuit 17 on the basis of the temperature of the fixing heater 10 detected by the temperature detection sensor 11.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：解决的问题：提供一种能够在抑制闪烁和谐波电流的产生的同时缩短启动时间的定影装置和图像形成装置。解决方案：定影装置包括：定影加热器10; 检测定影加热器10的温度的温度检测传感器11; 一个定影加热器驱动电路12包括三端双向可控硅开关驱动电路16，通过三端双向可控硅开关元件系统驱动定影加热器10;以及逆变器驱动电路17，通过逆变器系统驱动定影加热器10并驱动定影加热器10; 以及一个控制定影加热器驱动电路12的定影加热器温度控制部分13.定影加热器温度控制部分13通过控制三端双向可控硅开关电路16或逆变器驱动电路17来驱动定影加热器10，由温度检测传感器11检测出的定影加热器10.版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2011158698A Fixing control device, image forming apparatus, fixing control method, program, and recording medium 有权
标题翻译：固定控制装置，图像形成装置，固定控制方法，程序和记录介质
公开(公告)号：JP2011158698A
公开(公告)日：2011-08-18
申请号：JP2010020150
申请日：2010-02-01
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KONDO TOMOHIDE
IPC分类号： G03G15/20
摘要： PROBLEM TO BE SOLVED: To provide a fixing control device configured to reduce power consumption of a heat source part of a fixing roller, and to provide an image forming apparatus, a fixing control method, a program and a recording medium. SOLUTION: The fixing control device is configured to make a transfer medium pass through a gap between a fixing roller with a heating part provided therein and a pressure roller to fix a toner image transferred onto the transfer medium. The fixing control device includes: a calculating means that calculates the area of the unfixed region of the transfer medium passing through the gap between the fixing roller and the pressure roller; a detecting means that detects the temperature in the vicinity of the fixing roller; and a control means that shuts off the power supply to the heating part based on the area of the unfixed region and the temperature in the vicinity of the fixing roller. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种配置为降低定影辊的热源部分的功率消耗并提供图像形成装置，定影控制方法，程序和记录介质的定影控制装置。解决方案：定影控制装置构造成使转印介质通过设置在其中的加热部件的定影辊之间的间隙和压辊，以固定转印到转印介质上的调色剂图像。定影控制装置包括：计算装置，其计算通过定影辊和加压辊之间的间隙的转印介质的未固定区域的面积; 检测装置，其检测定影辊附近的温度; 以及控制装置，其基于未固定区域的面积和定影辊附近的温度来切断对加热部件的供电。版权所有（C）2011，JPO＆INPIT

8. 发明专利

JP2010217795A Image forming apparatus, image forming method and program 有权
标题翻译：图像形成装置，图像形成方法和程序
公开(公告)号：JP2010217795A
公开(公告)日：2010-09-30
申请号：JP2009067121
申请日：2009-03-18
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HIGASHIYAMA MAKOTO , KAWAI YOSHIAKI , NISHIZAKI SHINGO , KONDO TOMOHIDE , SUZUKI MASAFUMI
IPC分类号： G03G15/36 , G03G15/00 , G03G15/01 , G06T5/00 , H04N1/113 , H04N1/46 , H04N1/60
摘要： PROBLEM TO BE SOLVED: To fully reduce a stringy noise and obtain a high-quality image while preventing color shift due to skew between each colors by skew correction. SOLUTION: An image forming apparatus includes: a pattern matching section 211 in which densities of a pixel of interest and pixels around the pixel of interest are calculated when the pixel of interest of correction target is at a division position in the main scanning direction based on pixels of an image data which underwent the skew correction, and generation of density deviation is detected based on the calculated densities, a sift direction due to the skew correction, and a predetermined pattern; and a dither correction output section 221 in which density correction of the image data is performed based on the detected density deviation when the generation of density deviation is detected. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了完全减少粗糙的噪音并获得高质量的图像，同时通过歪斜校正防止每种颜色之间的偏斜造成的颜色偏移。解决方案：图像形成装置包括：图案匹配部211，其中当校正对象的感兴趣的像素处于主扫描中的分割位置时，计算感兴趣像素的密度和感兴趣像素周围的像素基于经过倾斜校正的图像数据的像素的方向，并且基于计算的密度，由于歪斜校正引起的筛选方向和预定图案来检测浓度偏差的产生; 以及抖动校正输出部221，其中当检测到密度偏差的产生时，基于检测到的浓度偏差执行图像数据的浓度校正。版权所有（C）2010，JPO＆INPIT

9. 发明专利

JP2009260935A Image forming apparatus, image forming method thereof, and program 有权
标题翻译：图像形成装置，图像形成方法及程序
公开(公告)号：JP2009260935A
公开(公告)日：2009-11-05
申请号：JP2009016733
申请日：2009-01-28
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KAWAI YOSHIAKI , NISHIZAKI SHINGO , HIGASHIYAMA MAKOTO , KONDO TOMOHIDE , SUZUKI MASAFUMI
IPC分类号： H04N1/40 , G03G15/00 , G03G21/14
CPC分类号： H04N1/506
摘要： PROBLEM TO BE SOLVED: To provide: an image forming apparatus capable of minimizing degradation of image quality in density correction as a part of skew correction; an image forming method thereof; and a program. SOLUTION: A noise induction determining unit 1501 determines whether or not a pixel of interest in contact with a shift position becomes a noise-inducing pixel that leads to local density increase/decrease because of a change in relation with an adjacent pixel and when the pixel of interest is determined as being a noise-inducing pixel, a correction target pixel selecting unit 1502 determines any one of a pixel of interest and a pixel in the vicinity of the pixel of interest as a correction target pixel on which density correction is to be performed. A density correcting unit 1504 performs density correction on image data of the determined correction target pixel, and a phase correcting unit 1505 corrects an output point in time within a pixel period, during which the image data of the correction target pixel to which the density correction has been applied can be outputted, to a position displaced in any one of a direction away from the shift position and a direction toward the shift position. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供：能够使作为偏斜校正的一部分的浓度校正中的图像质量的劣化最小化的图像形成装置; 其图像形成方法; 和一个程序。解决方案：噪声感应确定单元1501确定与移位位置接触的感兴趣像素是否是由于与相邻像素的相关性的变化而导致局部浓度增加/减小的噪声诱导像素，以及当感兴趣的像素被确定为噪声诱导像素时，校正对象像素选择单元1502确定感兴趣像素中的任何一个和感兴趣像素附近的像素作为其上的浓度校正的校正目标像素将被执行。密度校正单元1504对所确定的校正目标像素的图像数据执行浓度校正，并且相位校正单元1505校正像素周期内的输出点，在该周期期间，校正目标像素的图像数据已经被施加的位置可以被输出到远离换档位置的方向和朝向换档位置的方向中的任何一个中移位的位置。版权所有（C）2010，JPO＆INPIT

10. 发明专利

JP2009063662A Color image forming apparatus, density shift correction method and density shift correction program 有权
标题翻译：彩色图像形成装置，密度变换校正方法和密度变换校正程序
公开(公告)号：JP2009063662A
公开(公告)日：2009-03-26
申请号：JP2007229330
申请日：2007-09-04
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： KONDO TOMOHIDE
IPC分类号： G03G15/01 , G03G15/00 , G03G21/14 , H04N1/40 , H04N1/46 , H04N1/60
摘要： PROBLEM TO BE SOLVED: To provide a color image forming apparatus which achieves reduction in color shift by skew correction by image shifting and which does not carry out excessive correction of a striped noise image caused by density shift due to the skew correction. SOLUTION: The density correction part 1353 of a skew correction processing part 135 includes; a function which calculates a density value which is obtained by adding an image density data value in a marked region comprised of pixels in a prescribed region with the marked image as a center which is in contact with an image shift position when image data are shifted by using shift correction information and the image data, a function which detects whether a local increase or decrease in the density occurs in the marked pixel due to variation in adjacent relationship of pixels, a function which decides whether or not the density value in the marked region is within a density region where density correction is not needed, and a function which executes density correction processing for the marked pixel or the pixel adjacent to the marked pixel when the density correction is needed as the results of the decision. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决的问题：提供一种彩色图像形成装置，其通过图像偏移进行偏斜校正来实现色移的减少，并且不会由于偏斜校正而导致由密度偏移引起的条纹噪声图像的过度校正。倾斜校正处理部135的浓度校正部1353包括：计算通过将图像浓度数据值与规定区域中的像素相加的图像浓度数据值与图像数据移位时与图像偏移位置接触的标记图像作为中心来计算密度值的函数使用移位校正信息和图像数据，检测由于像素的相邻关系的变化而在标记的像素中是否发生密度的局部增加或减小的功能，决定标记区域中的浓度值是否在不需要浓度校正的密度区域内，以及当需要密度校正时，对标记像素或邻近标记像素的像素执行浓度校正处理的功能作为判定结果。版权所有（C）2009，JPO＆INPIT

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