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1. 发明授权

US10228647B2 Optical sensor and image forming apparatus 有权
公开(公告)号：US10228647B2
公开(公告)日：2019-03-12
申请号：US15897356
申请日：2018-02-15
申请人： CANON KABUSHIKI KAISHA
发明人： Kazushi Ino , Takuya Mukaibara , Naoki Nishimura , Takashi Fukuhara , Osamu Nagasaki
IPC分类号： G03G15/00 , G03G15/01 , G01N21/55
摘要： A toner detection unit is configured by an LED that irradiates light toward an intermediate transfer belt, first and second light receiving elements that respectively receive specular reflection light and diffused reflection light of light irradiated toward the intermediate transfer belt from the LED, a circuit board, and a housing. The LED and the light receiving elements are mounted in a line on the circuit board. The housing is configured to guide, to the first light receiving element, the specular reflection light from a first region within an irradiation region on which light is irradiated from the LED on the intermediate transfer belt, and to guide, to the second light receiving element, the diffused reflection light from a second region which is different from the first region within the irradiation region.

2. 发明申请

US20210278792A1 IMAGE FORMING APPARATUS THAT OBTAINS COLOR MISREGISTRATION AMOUNT USING DETECTION RESULT OF TEST IMAGE 有权
公开(公告)号：US20210278792A1
公开(公告)日：2021-09-09
申请号：US17189630
申请日：2021-03-02
申请人： CANON KABUSHIKI KAISHA
发明人： Takuya Mukaibara , Kazutaka Yaguchi
IPC分类号： G03G15/00 , G03G15/01
摘要： An image forming apparatus includes: a detecting unit configured to detect a test image formed on an image carrier; and an obtaining unit configured to obtain a color misregistration amount using a detection result of the test image by the detecting unit. The test image includes one or more basic patterns; each one of the one or more basic patterns includes a first pattern group and a second pattern group disposed at different positions in a conveyance direction of the image carrier; the first pattern group and the second pattern group each include a plurality of V-shaped patterns; and the V-shaped patterns of the first pattern group and the second pattern group have an axisymmetrical shape about an axis corresponding to a width direction orthogonal to the conveyance direction.

3. 发明申请

US20210255094A1 STRUCTURE OF OPTICAL SENSOR HAVING LIGHT-EMITTING ELEMENT AND LIGHT-RECEIVING ELEMENT 有权
公开(公告)号：US20210255094A1
公开(公告)日：2021-08-19
申请号：US17174223
申请日：2021-02-11
申请人： CANON KABUSHIKI KAISHA
发明人： Kazushi Ino , Takuya Mukaibara , Junya Azami , Kazutaka Yaguchi , Hiroshi Kita
IPC分类号： G01N21/31 , G03G15/00
摘要： A housing includes a first opening and a second opening, and encloses a light-emitting element and a first light receiving unit. The first opening is provided in a first light guide path, and is arranged so that light output from the light-emitting element travels toward a target surface. The second opening is provided in a second light guide path arranged between the target surface and the first light receiving unit. The first opening is an exit opening of a through-hole provided penetrating through the housing, and a shape of the through-hole is a shape in which diffracted light of the +1st order and higher orders and diffracted light of the −1st order and higher orders produced at the target surface to be irradiated are not incident on the first light receiving unit.

4. 发明授权

US10158780B2 Image forming apparatus and optical sensor detecting target formed on image carrier or recording medium 有权
公开(公告)号：US10158780B2
公开(公告)日：2018-12-18
申请号：US15868186
申请日：2018-01-11
申请人： CANON KABUSHIKI KAISHA
发明人： Takuya Mukaibara , Takashi Fukuhara , Kazushi Ino , Naoki Nishimura , Keisuke Nakano
IPC分类号： G03G15/00 , H04N1/06 , G03G15/04 , H04N1/028 , H04N1/50 , H04N1/00
摘要： An image forming apparatus includes a light-receiving unit that includes light-receiving elements arranged along a movement direction of a target formed on an image carrier, and is arranged so as to receive light emitted from a light-emitting unit and specularly reflected off the image carrier; a member configured to limit a size, in the movement direction, of diffused reflection light that is incident on the light-receiving unit; a selection unit configured to select whether or not each of the light-receiving elements in the light-receiving unit is an effective light-receiving element; a generation unit configured to generate a detection signal from an output of the effective light-receiving element; and a detection unit configured to detect a target formed on the image carrier based on the detection signal.

5. 发明申请

US20180173144A1 OPTICAL SENSOR AND IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20180173144A1
公开(公告)日：2018-06-21
申请号：US15897356
申请日：2018-02-15
申请人： CANON KABUSHIKI KAISHA
发明人： Kazushi Ino , Takuya Mukaibara , Naoki Nishimura , Takashi Fukuhara , Osamu Nagasaki
IPC分类号： G03G15/00 , G03G15/01 , G01N21/55
CPC分类号： G03G15/5054 , G01N2021/556 , G03G15/0178 , G03G15/5058 , G03G2215/00143 , G03G2215/00616
摘要： A toner detection unit is configured by an LED that irradiates light toward an intermediate transfer belt, first and second light receiving elements that respectively receive specular reflection light and diffused reflection light of light irradiated toward the intermediate transfer belt from the LED, a circuit board, and a housing. The LED and the light receiving elements are mounted in a line on the circuit board. The housing is configured to guide, to the first light receiving element, the specular reflection light from a first region within an irradiation region on which light is irradiated from the LED on the intermediate transfer belt, and to guide, to the second light receiving element, the diffused reflection light from a second region which is different from the first region within the irradiation region.

6. 发明申请

US20210255102A1 STRUCTURE OF OPTICAL SENSOR HAVING LIGHT-EMITTING ELEMENT AND PLURALITY OF LIGHT-RECEIVING ELEMENTS 有权
公开(公告)号：US20210255102A1
公开(公告)日：2021-08-19
申请号：US17173477
申请日：2021-02-11
申请人： CANON KABUSHIKI KAISHA
发明人： Kazushi Ino , Takuya Mukaibara , Kazutaka Yaguchi , Junya Azami , Hiroshi Kita
IPC分类号： G01N21/55 , G03G15/00
摘要： A housing includes a first opening and a second opening, and encloses a light-emitting element, a first light receiving unit, and a second light receiving unit. The first opening is provided in a first light guide path arranged between the light-emitting element and a first irradiated region of the target surface, and is arranged so that light output from the light-emitting element travels toward the first irradiated region. The second opening is provided in a second light guide path arranged between the first irradiated region and the first light receiving unit, and is arranged so that diffused reflection light from the toner image passes through when the toner image passes the first irradiated region.

7. 发明授权

US09971293B2 Image forming apparatus including optical sensor 有权
公开(公告)号：US09971293B2
公开(公告)日：2018-05-15
申请号：US15295097
申请日：2016-10-17
申请人： CANON KABUSHIKI KAISHA
发明人： Noriyuki Monden , Takuya Mukaibara , Kazushi Ino
IPC分类号： G03G15/00
CPC分类号： G03G15/556 , G03G15/5058
摘要： A toner detection unit includes an LED and a light receiving element that outputs a current in accordance with a received light amount. A current/voltage converter circuit converts the current outputted from the light receiving element into a voltage and outputs the voltage. A voltage amplifier circuit amplifies a difference between the voltage outputted from the converter circuit and a reference voltage and outputs the amplified difference as a voltage corresponding to the received light amount. A microcomputer measures the voltage outputted from the voltage amplifier circuit by causing the LED to emit light, under a measurement condition under which the reflected light is not incident on the light receiving element through an opening formed in a housing of the toner detection unit, and adjusts the reference voltage used in the voltage amplifier circuit based on the obtained measured voltage.

8. 发明授权

US09885990B2 Image forming apparatus and detection apparatus for detecting position or density information of detection image 有权
公开(公告)号：US09885990B2
公开(公告)日：2018-02-06
申请号：US14441977
申请日：2013-11-19
申请人： CANON KABUSHIKI KAISHA
发明人： Takuya Mukaibara , Hidetoshi Hanamoto
IPC分类号： G03G15/00 , G06K15/02 , G01N21/55
CPC分类号： G03G15/5062 , G01N21/55 , G03G15/5058 , G03G2215/0161 , G03G2215/0164 , G06K15/1878
摘要： An image forming apparatus includes an irradiation unit for irradiating an image carrier having a detection image with light; a light-receiving unit for receiving reflected light of the light irradiated by the irradiation unit and outputting a detection signal corresponding to a light-receiving amount of the reflected light including a specular-reflected light component; and a detection unit for detecting one of position information and density information of the detection image based on a signal corresponding to a difference between a value of the detection signal corresponding to the light-receiving amount of the reflected light from a first position where the detection image is formed and a value of the detection signal corresponding to the light-receiving amount of the reflected light from a second position different from the first position.

9. 发明申请

US20170329267A1 IMAGE FORMING APPARATUS PERFORMING MISREGISTRATION CORRECTION CONTROL BASED ON DETECTION RESULTS OF DETECTION PATTERN 审中-公开
公开(公告)号：US20170329267A1
公开(公告)日：2017-11-16
申请号：US15496412
申请日：2017-04-25
申请人： CANON KABUSHIKI KAISHA
发明人： Hiroyuki Yamazaki , Takuya Mukaibara
IPC分类号： G03G15/00
CPC分类号： G03G15/5054 , G03G15/0189 , G03G15/5058 , G03G2215/0161
摘要： An image forming apparatus performs misregistration correction based on a detection result of a detection pattern. The detection pattern includes basic patterns arranged at a first interval in a sub-scanning direction. Each basic pattern includes N image groups arranged at a second interval. In the N image groups, a first group including an image at a first angle and a second group including an image at a second angle are arranged alternately in the sub-scanning direction. The first interval corresponds to a distance that a surface of an image carrier moves in a period of M times a first period corresponding to a rotation period of a rotational member, and the second interval corresponds to a distance that a surface of the image carrier moves in a period of 1/(N−1) of the first period.

10. 发明授权

US09494889B2 Image forming apparatus and detection apparatus 有权
标题翻译：图像形成装置及检测装置
公开(公告)号：US09494889B2
公开(公告)日：2016-11-15
申请号：US14442009
申请日：2013-10-31
申请人： CANON KABUSHIKI KAISHA
发明人： Toshikazu Tsuchiya , Takuya Mukaibara
IPC分类号： G03G15/00 , G03G15/043
CPC分类号： G03G15/043 , G03G15/5058
摘要： An image forming apparatus includes an irradiation unit for irradiating an image carrier having a formed detection image with light, the irradiation unit being capable of switching a size of a light-emitting region; a light-receiving unit for receiving reflected light of the light irradiated by the irradiation unit and outputting a detection signal corresponding to a light-receiving amount of the reflected light including a specular-reflected light component; a detection unit for detecting one of position information and density information of the detection image based on the detection signal; and a control unit for controlling to switch the size of the light-emitting region to detect one of the position information and the density information of the detection image.
摘要翻译：一种图像形成装置，包括：用于用光照射具有形成的检测图像的图像载体的照射单元，所述照射单元能够切换发光区域的尺寸; 光接收单元，用于接收由照射单元照射的光的反射光，并输出与包括镜面反射光分量的反射光的光接收量相对应的检测信号; 检测单元，用于基于检测信号检测检测图像的位置信息和浓度信息之一; 以及控制单元，用于控制切换发光区域的尺寸以检测检测图像的位置信息和浓度信息之一。

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