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公开(公告)号：US20190238717A1
公开(公告)日：2019-08-01
申请号：US16256212
申请日：2019-01-24
申请人： Osamu INAGE , Masamoto NAKAZAWA , Daisuke NIKAKU , Ryohma IKEMOTO , Hideki HASHIMOTO , Shinichiroh WADA
发明人： Osamu INAGE , Masamoto NAKAZAWA , Daisuke NIKAKU , Ryohma IKEMOTO , Hideki HASHIMOTO , Shinichiroh WADA
摘要： An image reader includes a reading device to read an image on a recording medium, a first conveying roller pair upstream of the reading device in a conveyance direction of the recording medium, a second conveying roller pair downstream of the reading device in the conveyance direction, to hold the recording medium together with the first conveying roller pair to convey the recording medium, and a driver to drive the first conveying roller pair and the second conveying roller pair so that a relative relation between a reading position of the reading device and the recording medium held by the first conveying roller pair and the second conveying roller pair is constant. The reading device determines that the image read from the recording medium is effective in a period in which the relative relation is constant.
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公开(公告)号：US20220109779A1
公开(公告)日：2022-04-07
申请号：US17489869
申请日：2021-09-30
摘要： A reading device, an image forming apparatus, and a method of correction. The reading device includes a scanner configured to read an image in a first wavelength range and an image in a second wavelength range from light reflected by a surface of a recording medium, a detector configured to detect a change from a reference position in a reading-depth direction when the surface of the recording medium is read by the scanner, based on an amount of characteristic read from the image in the second wavelength range, and a corrector configured to correct the image in the first wavelength range based on the change detected by the detector. The image forming apparatus includes the reading device, and an image forming device configured to form an image corrected by the corrector of the reading device on a recording medium. The method includes reading the image in the first wavelength.
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3.发明申请PHOTOELECTRIC CONVERSION ELEMENT, IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND PHOTOELECTRIC CONVERSION METHOD 有权光电转换元件，图像读取装置，图像形成装置和光电转换方法公开(公告)号：US20160173719A1
公开(公告)日：2016-06-16
申请号：US14955569
申请日：2015-12-01
IPC分类号： H04N1/193 , H04N5/378 , H04N1/053 , H04N5/3745
摘要： Multiple photodetectors that photoelectric convert incident light to output a pixel signal; multiple analog/digital (A/D) convertors that A/D convert a plurality of pixel signals that are output by the photodetectors in parallel in a plurality of systems; a retaining unit that retains the pixel signals A/D converted in parallel by the A/D convertors in an aligned manner in one direction, to be arranged in reading order from a first pixel signal to a final pixel signal; and multiple transfer units that transfer the pixel signals arranged and retained by the retaining unit, sequentially from the first pixel signal from a first-pixel-signal retaining position toward a final-pixel signal retaining position of the retaining unit are included.
摘要翻译： 多个光电检测器，光电转换入射光以输出像素信号; 多个模拟/数字（A / D）转换器，其在多个系统中并行地转换由所述光电检测器并行输出的多个像素信号; 保持单元，其以一个方向对齐的方式保持由A / D转换器并行转换的像素信号A / D，以从第一像素信号到最终像素信号的读取顺序排列; 并且包括从第一像素信号从第一像素信号保持位置朝向保持单元的最终像素信号保持位置顺序地传送由保持单元布置和保持的像素信号的多个传送单元。
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公开(公告)号：US20220303417A1
公开(公告)日：2022-09-22
申请号：US17695838
申请日：2022-03-16
申请人： Hideki HASHIMOTO , Daisuke NIKAKU , Yutaka OHMIYA
发明人： Hideki HASHIMOTO , Daisuke NIKAKU , Yutaka OHMIYA
摘要： An image reading device includes a reading unit, a background member, and processing circuitry. The reading unit includes alight source to emit light to a passage area through which an object passes and an imaging device to capture reflected light of the light emitted to generate a visible image and an invisible image. The background member is disposed opposite the light source across the passage area. The processing circuitry is configured to: detect a change in an image characteristic due to a change in an optical characteristic of the reading unit, in invisible images obtained by capturing of invisible marks on the background member; determine a correction amount of an image characteristic to be used for correcting an image of the object generated by the imaging device, based on the change in the image characteristic detected; and correct the image characteristic based on the correction amount determined.
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公开(公告)号：US20210385384A1
公开(公告)日：2021-12-09
申请号：US17340121
申请日：2021-06-07
申请人： Yutaka OHMIYA , Daisuke NIKAKU , Hideki HASHIMOTO
发明人： Yutaka OHMIYA , Daisuke NIKAKU , Hideki HASHIMOTO
摘要： A position detection device includes a background member, a reader, and processing circuitry. The background member has a higher absorption characteristic in an invisible wavelength region than in a visible wavelength region. The reader opposite the background member irradiates a recording medium having a mark and the background member with light of a visible wavelength to output a visible image or with light of an invisible wavelength to output an invisible image. The processing circuitry is configured to: detect an end position of the recording medium and a position of the mark on the recording medium from a read image output from the reader; and select the visible or invisible image as the read image used for position detection, according to an absorption characteristic of a color material forming the mark read by the reader and an absorption characteristic of the recording medium in the invisible wavelength region.
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公开(公告)号：US20210218860A1
公开(公告)日：2021-07-15
申请号：US17141240
申请日：2021-01-05
摘要： An image reading device includes a light source configured to irradiate a subject; a reading unit configured to detect reflected light generated by a subject reflecting light emitted from the light source, to perform reading; and a control unit configured to perform turn-on control on the light source. The control unit is configured to perform the turn-on control to change a turn-on condition such that the light source is turned on during a period when at least a detection region including an image pattern on the subject passes through a reading position of a reading unit, based on position information of the image pattern of the subject in a first operation mode for reading the subject, and perform the turn-on control to make the turn-on condition of the light source constant regardless of the image pattern of the subject in a second operation mode for reading the subject.
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7.发明申请PHOTOELECTRIC CONVERSION DEVICE, SENSOR CONTROL CIRCUIT, IMAGE READING DEVICE, AND IMAGE FORMING APPARATUS 有权光电转换装置，传感器控制电路，图像读取装置和图像形成装置公开(公告)号：US20110051201A1
公开(公告)日：2011-03-03
申请号：US12850133
申请日：2010-08-04
IPC分类号： H04N1/04
CPC分类号： H04N5/3692 , H04N5/372 , H04N5/3765
摘要： The photoelectric conversion device includes a photoelectric conversion element configured to convert light reflected from an original image to electrical signals and a clock generator configured to generate driving signals for driving the photoelectric conversion element from a reference clock. Each of the driving signals is generated using the same logic gate or substantially the same logic gate.
摘要翻译： 光电转换装置包括被配置为将从原始图像反射的光转换为电信号的光电转换元件和被配置为产生用于从参考时钟驱动光电转换元件的驱动信号的时钟发生器。 每个驱动信号使用相同的逻辑门或基本上相同的逻辑门产生。
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8.发明申请公开(公告)号：US20190327387A1
公开(公告)日：2019-10-24
申请号：US16374146
申请日：2019-04-03
摘要： A color inspection device includes a reading device and circuitry. The reading device images a reference object and a color detection object to obtain readings of each of the reference object and the color detection object. The circuitry corrects the readings of the color detection object by using a correction coefficient that is generated from the readings of the reference object and color information measured for each arbitrary region of the reference object.
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9.发明申请公开(公告)号：US20190289163A1
公开(公告)日：2019-09-19
申请号：US16427946
申请日：2019-05-31
摘要： A photoelectric conversion device includes a plurality of light receiving elements, a plurality of A/D conversion units, and an offset giving unit. The light receiving elements are arrayed in one direction and each convert a light signal into an electrical signal. The A/D conversion units perform A/D conversion on the electrical signals output from the light receiving elements. The offset giving unit gives an offset voltage of a certain level to the electrical signals output from the light receiving elements without flowing a steady current before the electrical signals are input into the A/D conversion units.
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10.发明申请公开(公告)号：US20170302821A1
公开(公告)日：2017-10-19
申请号：US15485323
申请日：2017-04-12
CPC分类号： H04N1/409 , H04N1/00018 , H04N1/193 , H04N1/40056 , H04N1/4076 , H04N2201/0094
摘要： A signal processing device includes a signal output circuit, a controller, and a corrector. The signal output circuit outputs a signal according to a physical quantity being input. The controller controls the signal output circuit. The corrector corrects a signal to be corrected. The signal to be corrected is output from the signal output circuit. The signal output circuit selectively performs one of first operation of outputting a characteristic signal that indicates characteristics of the signal output circuit and second operation of outputting a pseudo signal that is generated spuriously, according to control of the controller. The corrector corrects the signal to be corrected based on one of the characteristic signal and the pseudo signal output from the signal output circuit.
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