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公开(公告)号：US09533850B2
公开(公告)日：2017-01-03
申请号：US14687580
申请日：2015-04-15
申请人： Konica Minolta, Inc.
发明人： Hiroyuki Yoshikawa , Yuta Tachibana , Takaki Kato , Daichi Suzuki
CPC分类号： B65H7/20 , B65H5/062 , B65H5/068 , B65H5/26 , B65H7/06 , G03G15/6529 , G03G15/6564 , G03G2215/00599 , G03G2215/00603 , G03G2215/00945 , G03G2215/0132 , G03G2215/0196
摘要： An image forming apparatus includes a conveyance sensor disposed near a pair of conveyance rollers so as to accurately detect an amount of movement of the recording paper, a conveyance delay determination unit to determine a conveyance delay of the recording paper, and a conveyance control unit to control drive for rollers. The conveyance delay determination unit obtains conveyance delay information from among information detected with the conveyance sensor, or the like, and accelerates a rotational velocity of the pair of paper feed rollers when the conveyance delay quantity exceeds a threshold.
摘要翻译： 图像形成装置包括设置在一对传送辊附近的传送传感器，以便精确地检测记录纸的移动量;传送延迟确定单元，用于确定记录纸的传送延迟;以及传送控制单元， 滚筒控制驱动。 输送延迟确定单元从输送传感器检测到的信息中获取输送延迟信息等，并且当输送延迟量超过阈值时加速一对给纸辊的旋转速度。
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公开(公告)号：US10116808B2
公开(公告)日：2018-10-30
申请号：US15270456
申请日：2016-09-20
申请人： Konica Minolta, Inc.
发明人： Takaki Kato , Masayuki Fukunaga , Yuji Kobayashi
摘要： A moving amount detector that sets a movable member included in a device of a mounting destination or an object conveyed by the device as a detection target and detects a moving amount of the detection target includes: an imaging unit that repeatedly captures images of the detection target at a constant sampling period while the detection target moves; and a moving amount calculating unit that selects two images to be compared with each other among a series of images of the detection target captured by the imaging unit such that an imaging time difference between the two images is increased as a difference due to moving of the detection target is further generated between the two images and calculates a moving amount of the detection target based on the difference.
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3.发明授权Image forming apparatus which performs a cleaning operation to remove a film deposited in a motor 有权执行清洁操作以去除沉积在电动机中的膜的图像形成装置公开(公告)号：US09056493B2
公开(公告)日：2015-06-16
申请号：US13865860
申请日：2013-04-18
申请人： Konica Minolta, Inc.
CPC分类号： B41J13/0009 , B41J13/0018 , B41J29/17 , B41J29/38 , B65H5/062 , G03G15/6529 , G03G15/6555
摘要： An image forming apparatus includes: a conveyance roller configured to convey recording sheets; a brush motor configured to drive the conveyance roller to rotate; and a control unit configured to control a rotational speed of the brush motor, wherein while the conveyance roller conveys a recording sheet, (i) the control unit applies voltage to an outer circumferential surface of a commutator of the brush motor to drive the brush motor to rotate by a predetermined rotation amount, so as to perform a cleaning operation to remove a film deposited on the outer circumferential surface, and (ii) the control unit reduces the rotational speed of the brush motor while not performing the cleaning operation, so as to correct a conveyance distance of the recording sheet.
摘要翻译： 图像形成装置包括：输送辊，其构造成输送记录纸; 构造成驱动输送辊旋转的刷马达; 以及控制单元，被配置为控制所述刷马达的转速，其中当所述输送辊传送记录纸时，所述控制单元向所述刷马达的换向器的外周面施加电压，以驱动所述刷马达 以旋转预定的旋转量，以便执行清洁操作以去除沉积在外周面上的膜，和（ii）控制单元在不执行清洁操作的同时降低刷马达的旋转速度，从而 以校正记录纸的传送距离。
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公开(公告)号：US20130279960A1
公开(公告)日：2013-10-24
申请号：US13865860
申请日：2013-04-18
申请人： KONICA MINOLTA, INC.
IPC分类号： B41J13/00
CPC分类号： B41J13/0009 , B41J13/0018 , B41J29/17 , B41J29/38 , B65H5/062 , G03G15/6529 , G03G15/6555
摘要： An image forming apparatus includes: a conveyance roller configured to convey recording sheets; a brush motor configured to drive the conveyance roller to rotate; and a control unit configured to control a rotational speed of the brush motor, wherein while the conveyance roller conveys a recording sheet, (i) the control unit applies voltage to an outer circumferential surface of a commutator of the brush motor to drive the brush motor to rotate by a predetermined rotation amount, so as to perform a cleaning operation to remove a film deposited on the outer circumferential surface, and (ii) the control unit reduces the rotational speed of the brush motor while not performing the cleaning operation, so as to correct a conveyance distance of the recording sheet.
摘要翻译： 图像形成装置包括：输送辊，其构造成输送记录纸; 构造成驱动输送辊旋转的刷马达; 以及控制单元，被配置为控制所述刷马达的转速，其中当所述输送辊传送记录纸时，所述控制单元向所述刷马达的换向器的外周面施加电压，以驱动所述刷马达 以旋转预定的旋转量，以便执行清洁操作以去除沉积在外周面上的膜，和（ii）控制单元在不执行清洁操作的同时降低刷马达的旋转速度，从而 以校正记录纸的传送距离。
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5.发明授权公开(公告)号：US10776934B2
公开(公告)日：2020-09-15
申请号：US15812709
申请日：2017-11-14
申请人： KONICA MINOLTA, INC.
发明人： Takaki Kato , Yuji Kobayashi , Masayuki Fukunaga
摘要： A movement amount detecting device performs discrete Fourier transform onto N-th image data and N+1-th image data, thereby generating N-th wave number space data and N+1-th wave number space data. The movement amount detecting device obtains a target speed of a sheet, and determines a cutoff value based on the obtained target speed and an exposure time in an image sensor. The movement amount detecting device calculates an amount of movement of the sheet based on a phase difference between the N-th wave number space data and the N+1-th wave number space data in a wave number component smaller than the cutoff value.
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公开(公告)号：US10139767B2
公开(公告)日：2018-11-27
申请号：US15176462
申请日：2016-06-08
申请人： KONICA MINOLTA, INC.
IPC分类号： G03G15/00
摘要： An image forming apparatus that transfers an image from an image carrier onto a sheet passing between the image carrier rotating and a transfer member includes a fixing unit configured to thermally fix the image on the sheet while nipping and conveying the sheet with a pair of fixing members after the transfer, at least one of the fixing members rotating; a measuring unit configured to measure surface movement speed of the sheet in a non-contact manner while the sheet is being conveyed by the fixing members; and a control unit configured to control rotation speed of the fixing members in accordance with a result of the measurement, to adjust speed of conveyance of the sheet to a target speed determined beforehand for peripheral speed of the image carrier, the control being performed while the sheet being conveyed is in contact with the transfer member and the fixing members.
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公开(公告)号：US20180157941A1
公开(公告)日：2018-06-07
申请号：US15830400
申请日：2017-12-04
申请人： Konica Minolta, Inc.
发明人： Yuji Kobayashi , Takaki Kato , Masayuki Fukunaga
IPC分类号： G06K15/16
CPC分类号： G06K15/16 , G06K15/1219
摘要： An image forming apparatus includes: a conveying path on which a recording medium is conveyed; an image capturer that includes a light source and radiates light from the light source to capture the recording medium being conveyed at different timings to generate at least two images including a first image and a second image; and a movement amount calculator that calculates a movement amount of the recording medium between capturing timings of the first and second images, wherein the movement amount calculator: calculates an index distance which is a distance in a conveying direction of a pattern formed by reflected light from the recording medium; calculates a ratio between the index distance and a reference distance used for comparison with the index distance; and calculates a movement amount of the recording medium between the capturing timings of the first and second images.
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8.发明授权公开(公告)号：US10474085B2
公开(公告)日：2019-11-12
申请号：US15369031
申请日：2016-12-05
申请人： Konica Minolta, Inc.
发明人： Yuji Kobayashi , Takaki Kato , Masayuki Fukunaga
摘要： An image formation apparatus includes a conveyor configured to convey a moving element on which an image is formed, a generator configured to generate a first image and a second image by shooting the conveyed moving element at different timing, a detector configured to sense a first distance between the generator and the moving element at the time of shooting of the first image and sense a second distance between the generator and the moving element at the time of shooting of the second image, and a hardware processor configured to calculate a speed of conveyance of the moving element based on the first image, the second image, the first distance, and the second distance, and output the speed of conveyance.
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公开(公告)号：US10250767B2
公开(公告)日：2019-04-02
申请号：US15830400
申请日：2017-12-04
申请人： Konica Minolta, Inc.
发明人： Yuji Kobayashi , Takaki Kato , Masayuki Fukunaga
摘要： An image forming apparatus includes: a conveying path on which a recording medium is conveyed; an image capturer that includes a light source and radiates light from the light source to capture the recording medium being conveyed at different timings to generate at least two images including a first image and a second image; and a movement amount calculator that calculates a movement amount of the recording medium between capturing timings of the first and second images, wherein the movement amount calculator: calculates an index distance which is a distance in a conveying direction of a pattern formed by reflected light from the recording medium; calculates a ratio between the index distance and a reference distance used for comparison with the index distance; and calculates a movement amount of the recording medium between the capturing timings of the first and second images.
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公开(公告)号：US09851674B2
公开(公告)日：2017-12-26
申请号：US15422881
申请日：2017-02-02
申请人： KONICA MINOLTA, INC.
发明人： Takaki Kato , Yuji Kobayashi , Masayuki Fukunaga
CPC分类号： G03G15/5062 , G01S7/4918 , G01S17/06 , G01S17/50 , G01S17/88 , G03G15/6529 , G03G2215/00616 , G03G2215/00721 , G03G2215/0132
摘要： An emission unit of a displacement detector emits laser light to a range in a space in which a target moves. A detection unit detects a distribution of amounts of light reflected from a capture region in the predefined range. Based on a shift of speckle pattern indicated by a difference between the distributions of amounts of reflected light that the detection unit detects at different times, a calculation unit calculates a displacement of the target. A correction unit measures a speckle contrast from the distribution of amounts of reflected light, and based on an error between the measured value and a reference value, corrects the amount of laser light. The reference value is set to the value of a speckle contrast in a case in which the amounts of reflected light fall within the detectable range of the detection unit.
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