公开(公告)号：US20200295689A1

公开(公告)日：2020-09-17

申请号：US16815588

申请日：2020-03-11

申请人： Konica Minolta, Inc.

发明人： Yuta TACHIBANA ,  Hiroyuki YOSHIKAWA ,  Yuji KOBAYASHI ,  Kazumichi YOSHIDA ,  Daichi SUZUKI ,  Harumitsu FUJIMORI

IPC分类号： H02P21/18 ,  H02P21/22 ,  H02P27/12 ,  G03G15/00

摘要： In a motor control device in one embodiment, an initial position estimation unit estimates an initial position of a magnetic pole of a rotor of a motor in an inductive sensing scheme. At each of energization angles, the initial position estimation unit multiplies a γ-axis current component Iγ corresponding to a peak value of a current flowing through a stator winding by each of a cosine value and a sine value of a correction angle obtained by correcting each of the energization angles. The initial position estimation unit estimates the initial position of the magnetic pole of the rotor based on a ratio between an integrated value of a multiplication result about the cosine value and an integrated value of a multiplication result about the sine value.

公开(公告)号：US20170235267A1

公开(公告)日：2017-08-17

申请号：US15414792

申请日：2017-01-25

申请人： KONICA MINOLTA, INC.

发明人： Yuji KOBAYASHI ,  Takaki KATO ,  Masayuki FUKUNAGA

IPC分类号： G03G15/00

CPC分类号： G03G15/5062 ,  G03G15/657 ,  G03G2215/00616 ,  G03G2215/00645 ,  G03G2215/0135

摘要： A device for detecting a travel distance of a sheet is provided. The device includes a light source for irradiating the sheet surface; an imaging sensor for capturing an image of a pattern of the sheet surface by light reflected from the sheet; a discrete Fourier transformation portion for performing discrete Fourier transformation on two patterns obtained by image capturing at a time interval by the imaging sensor; a high wave number component removal portion for using a threshold determined based on a cycle of concave-convex of the sheet surface to remove a high wave number component from the two patterns having been subjected to the discrete Fourier transformation; and a travel distance calculation portion for determining a travel distance of the sheet based on a phase relationship between the two patterns from which the high wave number component removal portion has removed the high wave number component.

公开(公告)号：US20200235683A1

公开(公告)日：2020-07-23

申请号：US16737093

申请日：2020-01-08

申请人： KONICA MINOLTA, INC.

发明人： Daichi SUZUKI ,  Yuji KOBAYASHI ,  Kazumichi YOSHIDA ,  Harumitsu FUJIMORI ,  Yuta TACHIBANA ,  Hiroyuki YOSHIKAWA

IPC分类号： H02P6/185 ,  G03G15/00 ,  H02P6/15 ,  H02P6/06 ,  H02P6/08 ,  H02P6/17 ,  H02P6/22 ,  H02P6/28 ,  H02P21/18 ,  H02P27/08

摘要： A control circuit of a motor control device estimates an initial magnetic pole position of a rotor using an inductive sensing scheme. When estimating the initial magnetic pole position, a drive circuit applies a voltage to a stator winding at each of L electrical angles (L≥5) while changing the L electrical angles. An absolute value of an electrical angle difference of the voltage applied to the stator winding between an i-th time (2≤i≤L) and an i−1st time is 180−360/L degrees or more and 180+360/L degrees or less. An absolute value of an electrical angle difference of the voltage applied to the stator winding between a 1st time for initial position estimation and a last time before starting initial position estimation is 180−360/L degrees or more and 180+360/L degrees or less.

公开(公告)号：US20150373283A1

公开(公告)日：2015-12-24

申请号：US14746027

申请日：2015-06-22

申请人： KONICA MINOLTA., INC.

发明人： Akihiro HAYASHI ,  Yuji KOBAYASHI ,  Harumitsu FUJIMORI ,  Shiro UMEDA ,  Kosuke MASUMOTO ,  Yasuhiro ISHIHARA ,  Hiroshi YAMAGUCHI ,  Isao WATANABE

IPC分类号： H04N5/272 ,  H04N5/262 ,  G06K9/00

CPC分类号： H04N5/272 ,  G06F3/017 ,  G06F3/0416 ,  G06F3/0425 ,  G06K9/00355 ,  G06K9/2054 ,  G06T3/4038

摘要： A photographing system includes a photographing device configured to photograph a surface; a detector configured to detect a change in a position of an object in a space between the surface and the photographing device; and an obtaining portion configured to obtain an image of an area of the surface by the photographing device when the detector detects the change, the area being not viewed by the photographing device before the change due to interruption of the object and being viewed by the photographing device after the change.

摘要翻译： 摄影系统包括被配置为拍摄表面的拍摄装置; 检测器，其被配置为检测所述表面和所述拍摄装置之间的空间中的物体的位置的变化; 以及获取部，其被配置为当所述检测器检测到所述改变时由所述拍摄装置获得所述表面的区域的图像，所述拍摄装置在由于所述物体的中断而被改变之前未被所述拍摄装置观看的区域并且被所述拍摄所观看 设备更换后。

公开(公告)号：US20140205340A1

公开(公告)日：2014-07-24

申请号：US14159529

申请日：2014-01-21

申请人： KONICA MINOLTA, INC.

发明人： Hiroshi YAMAGUCHI ,  Takaki KATO ,  Yuta TACHIBANA ,  Yuji KOBAYASHI ,  Satoshi TESHIMA

IPC分类号： G03G15/00

CPC分类号： G03G15/167 ,  B65H5/06 ,  B65H7/20 ,  B65H9/006 ,  B65H9/14 ,  B65H29/68 ,  B65H2404/14 ,  B65H2511/514 ,  B65H2513/222 ,  B65H2513/512 ,  B65H2557/242 ,  B65H2701/1311 ,  B65H2801/06 ,  G03G15/602 ,  G03G15/6561 ,  H04N1/00588 ,  H04N1/00602 ,  H04N1/00652 ,  H04N2201/0082 ,  B65H2220/02 ,  B65H2220/01

摘要： An image processing apparatus includes: a transport roller for transporting a sheet subjected to image processing; a motor that drives the transport roller to rotate; and a speed reduction unit that performs a speed reduction control on the motor to temporarily stop the sheet, the speed reduction control being performed in a manner that a stopping time and a stopping distance each satisfy a corresponding target range, wherein the speed reduction control includes: a first control that is a control of reducing a rotation speed of the motor to a reference speed through at least two operations from among a braking operation, a powering operation, and a free running operation; and a second control that is a control of, after a rotation amount of the motor from the start of the speed reduction control reaches a reference value, continuously performing the braking operation until the stop of the motor.

摘要翻译： 一种图像处理设备包括：用于传送经过图像处理的片材的传送辊; 驱动输送辊旋转的马达; 以及减速单元，其对所述电动机进行减速控制以暂时停止所述纸张，所述减速控制以停止时间和停止距离各自满足相应的目标范围的方式进行，其中所述减速控制包括 ：第一控制装置，其是通过制动操作，动力操作和自由行驶操作中的至少两个操作来将马达的转速降低到基准速度的控制; 以及作为控制的第二控制，在从减速控制开始开始的电动机的旋转量达到基准值之后，持续进行制动操作直到电动机的停止。

公开(公告)号：US20150324005A1

公开(公告)日：2015-11-12

申请号：US14706418

申请日：2015-05-07

申请人： KONICA MINOLTA, INC.

发明人： Yuji KOBAYASHI ,  Harumitsu FUJIMORI ,  Akihiro HAYASHI ,  Shiro UMEDA ,  Kosuke MASUMOTO ,  Yasuhiro ISHIHARA ,  Hiroshi YAMAGUCHI ,  Isao WATANZABE

IPC分类号： G06F3/01 ,  G06F3/042

CPC分类号： G06F3/01 ,  G06F3/017 ,  G06F3/0425 ,  G06F3/04842 ,  G06F3/0488 ,  H04N5/232 ,  H04N9/3179 ,  H04N9/3194

摘要： An image display and photographing system includes a display device configured to display a target image on a surface; a photographing device configured to photograph the surface; a first detector configured to detect that an object moves away from a space between the surface and the photographing device; a second detector configured to detect that, after the first detector detects that the object moves away from the space, the surface is touched at a predetermined position; a third detector configured to detect that, after the second detector detects that the surface is touched at the predetermined position, the object moves away from the space; and a photographing control portion configured to control, after the third detector detects that the object moves away from the space, the photographing device to photograph the surface.

摘要翻译： 图像显示和拍摄系统包括被配置为在表面上显示目标图像的显示装置; 被配置为拍摄所述表面的拍摄装置; 第一检测器，被配置为检测物体远离所述表面和所述拍摄装置之间的空间; 第二检测器，被配置为检测在所述第一检测器检测到所述物体远离所述空间之后，所述表面在预定位置被触摸; 第三检测器，被配置为检测在所述第二检测器检测到所述表面在所述预定位置被触摸之后，所述物体远离所述空间; 以及拍摄控制部，被配置为在所述第三检测器检测到所述物体远离所述空间之后控制所述拍摄装置拍摄所述表面。

公开(公告)号：US20180144484A1

公开(公告)日：2018-05-24

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

IPC分类号： G06T7/262 ,  H04N1/00 ,  G06T7/00

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.

公开(公告)号：US20170227906A1

公开(公告)日：2017-08-10

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

IPC分类号： G03G15/00 ,  G01S17/06 ,  B41J2/385

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.

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.

发明人： Yuji KOBAYASHI ,  Takaki Kato ,  Yuta Tachibana ,  Hiroshi Yamaguchi ,  Satoshi Teshima

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。

公开(公告)号：US20210061603A1

公开(公告)日：2021-03-04

申请号：US17004527

申请日：2020-08-27

申请人： Konica Minolta, Inc.

发明人： Yutaka YAMAMOTO ,  Akinori KIMATA ,  Hiroshi EGUCHI ,  Yuji KOBAYASHI ,  Natsuyo IDA ,  Yasuhiro ISHIHARA

IPC分类号： B65H7/14

摘要： An image forming device including an optical sensor, an ultrasound sensor, and a conveyance guide. The optical sensor and the ultrasound sensor are disposed alongside a conveyance path of a sheet and are used to determine sheet type. The conveyance guide guides the sheet along the conveyance path. The conveyance guide is structured such that, on the conveyance path between the optical sensor and the ultrasound sensor, the sheet is in contact with the conveyance guide while a portion of the sheet is in a light irradiation range of the optical sensor and a different portion of the sheet is in an ultrasound irradiation range of the ultrasound sensor.