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1. 发明授权

US11509776B2 Apparatus and method for detecting foreign substance based on a difference in reading level of reflected light in a first wavelength range and a second wavelength range 有权
公开(公告)号：US11509776B2
公开(公告)日：2022-11-22
申请号：US17327766
申请日：2021-05-24
申请人： Yoshihiro Inukai , Atsushi Sugai
发明人： Yoshihiro Inukai , Atsushi Sugai
IPC分类号： H04N1/00 , H04N1/028 , H04N1/03 , H04N1/191 , H04N1/409
摘要： An image reading apparatus includes a light source to emit at least light in a first wavelength range and light in a second wavelength range, a background member having different light reflectances in the first and second wavelength ranges, an imaging device, and circuitry. The imaging device receives reflected light from the background member irradiated with the light in the first wavelength range, and generates first read information. The imaging device further receives reflected light from the background member irradiated with the light in the second wavelength range, and generates second read information. The circuitry detects presence or absence of a first foreign substance based on a difference in reading level of the first read information generated by the imaging device; and detect presence or absence of a second foreign substance based on a difference in reading level of the second read information generated by the imaging device.

2. 发明申请

US20220345586A1 IMAGE READING APPARATUS, CONTROL METHOD THEREOF, AND STORAGE MEDIUM 有权
公开(公告)号：US20220345586A1
公开(公告)日：2022-10-27
申请号：US17720816
申请日：2022-04-14
申请人： CANON KABUSHIKI KAISHA
发明人： Yuki Kamio
IPC分类号： H04N1/401 , H04N1/12 , H04N1/00 , H04N1/191 , H04N1/053
摘要： An object of the present disclosure is to implement highly accurate image connecting processing between line sensors. One embodiment of the present invention is an image reading apparatus having: a plurality of line image sensors arrayed in a first direction; a conveyance unit configured to convey a document in a second direction intersecting with the first direction; a calculation unit configured to calculate a correction value for correcting a deviation at the time of connecting image data obtained by each of the plurality of line image sensors based on read data obtained by reading a chart with the plurality of line image sensors, on which a plurality of dot patterns is printed and which is conveyed by the conveyance unit; a measurement unit configured to measure an amount of conveyance in the first direction in a case where the document is conveyed in the second direction by the conveyance unit.

3. 发明授权

US10812673B2 Line sensor, image reading device, and image forming apparatus 有权
公开(公告)号：US10812673B2
公开(公告)日：2020-10-20
申请号：US16510462
申请日：2019-07-12
申请人： CANON KABUSHIKI KAISHA
发明人： Daisuke Akagi , Masanori Ogura , Jun Iba , Atsushi Furubayashi
IPC分类号： H04N1/46 , H04N1/028 , G02B5/20 , H01L27/14 , H04N9/07 , H04N1/03 , H04N1/191
摘要： In a line sensor including color filters that are periodically disposed in a light-receiving-element row, a problem called a “mixture of colors” occurs. A “mixture of colors” occurs when light that has been transmitted through a color filter differing from a color filter corresponding to a light receiving element is incident upon the light receiving element.In a CMOS sensor 107 including a light-receiving-element row in which a plurality of photodiodes 1204 are disposed side by side in a main scanning direction and a plurality of color filters 1202 that are disposed in correspondence with the plurality of photodiodes 1204, the center of each color filter 1202 is displaced in a direction of the center of the light-receiving-element row from the center of the photodiode 1204 corresponding to the color filter.

4. 发明授权

US10714527B2 Photoelectric conversion apparatus, sensor unit, and image forming apparatus 有权
公开(公告)号：US10714527B2
公开(公告)日：2020-07-14
申请号：US15891605
申请日：2018-02-08
申请人： CANON KABUSHIKI KAISHA
发明人： Hirotaka Shiomichi , Wataru Endo
IPC分类号： H01L27/146 , H01L31/14 , H04N5/378 , H04N5/374 , H04N5/361 , H04N5/369 , H04N1/191
摘要： A photoelectric conversion apparatus is provided. The apparatus comprises a substrate including two light receiving regions in which light receiving devices are arranged; electrode pads arranged on the substrate; and a readout circuit arranged on the substrate and configured to read out signals from the light receiving regions. The electrode pads include an output pad for outputting a signal, and a power supply pad for supplying power to the light receiving regions or the readout circuit. Each of the light receiving regions has a shape in which a first direction is taken as a longitudinal direction, the light receiving regions are arranged along a second direction with an interval therebetween, the second direction intersecting the first direction, and one or more pads of the electrode pads is sandwiched by the light receiving regions in the second direction.

5. 发明授权

US10596812B2 Printing apparatus and control method thereof 有权
公开(公告)号：US10596812B2
公开(公告)日：2020-03-24
申请号：US15991419
申请日：2018-05-29
申请人： CANON KABUSHIKI KAISHA
发明人： Satoshi Kitai , Masahiko Umezawa , Kouichi Serizawa , Kazuya Koizumi
IPC分类号： B41J2/045 , B41J2/14 , B41J2/21 , B41J2/155 , H04N1/32 , H04N1/034 , H04N1/191 , H04N1/12
摘要： According to an embodiment of the present invention, to improve processing performance, a printing apparatus that performs printing by using a printhead formed by a plurality of headchips includes one CPU, a table configured to store processing contents set by the CPU, and a plurality of processing units configured to process, in parallel, printing data to be used in each headchip by commonly using the table and in accordance with the processing contents set in the table. In addition, the apparatus includes a plurality of control units configured to wait for the completion of the processing of each processing unit, synchronize the plurality of processing units for next processing, and cause each of the processing units to execute the next processing in accordance with the processing contents set in the table.

6. 发明授权

US10542183B2 Image processing apparatus and method setting dot arrangements to reduce differences in dispersiveness of dots between overlapping and non-overlapping recording areas 有权
公开(公告)号：US10542183B2
公开(公告)日：2020-01-21
申请号：US15902928
申请日：2018-02-22
申请人： CANON KABUSHIKI KAISHA
发明人： Junichi Nakagawa , Akitoshi Yamada , Okinori Tsuchiya
IPC分类号： H04N1/52 , B41J3/54 , H04N1/60 , G06K15/02 , H04N1/191 , B41J2/21 , G06K15/10
摘要： An image processing apparatus performs quantization processing of first multivalued image data, second multivalued image data, and third multivalued image data using a dither pattern including a plurality of threshold pixels having threshold values respectively determined for quantization, generates first recording data by quantizing the first multivalued image data using a dither pattern having a threshold pixel arrangement satisfying a predetermined condition regarding the number of threshold pixels and a predetermined condition regarding low-frequency components corresponding to a frequency region lower than a predetermined frequency in spatial frequency characteristics corresponding to an arrangement of the threshold pixels, generates second recording data by quantizing the second multivalued image data using the dither pattern having the threshold pixel arrangement, and generates third recording data by quantizing the third multivalued image data using the dither pattern having the threshold pixel arrangement and the second multivalued image data.

7. 发明申请

US20190342465A1 LINE SENSOR, IMAGE READING DEVICE, AND IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20190342465A1
公开(公告)日：2019-11-07
申请号：US16510462
申请日：2019-07-12
申请人： CANON KABUSHIKI KAISHA
发明人： Daisuke Akagi , Masanori Ogura , Jun Iba , Atsushi Furubayashi
IPC分类号： H04N1/028 , H04N1/03 , H04N1/191 , G02B5/20 , H01L27/14 , H04N9/07
摘要： In a line sensor including color filters that are periodically disposed in a light-receiving-element row, a problem called a “mixture of colors” occurs. A “mixture of colors” occurs when light that has been transmitted through a color filter differing from a color filter corresponding to a light receiving element is incident upon the light receiving element.In a CMOS sensor 107 including a light-receiving-element row in which a plurality of photodiodes 1204 are disposed side by side in a main scanning direction and a plurality of color filters 1202 that are disposed in correspondence with the plurality of photodiodes 1204, the center of each color filter 1202 is displaced in a direction of the center of the light-receiving-element row from the center of the photodiode 1204 corresponding to the color filter.

8. 发明授权

US10382648B2 Scanner, and scanned image generating method 有权
公开(公告)号：US10382648B2
公开(公告)日：2019-08-13
申请号：US15617644
申请日：2017-06-08
申请人： SEIKO EPSON CORPORATION
发明人： Kazuya Takita
IPC分类号： H04N1/401 , H04N1/191 , H04N1/10 , H04N1/40
摘要： A scanner has a first sensor array; a second sensor array; a timing controller that individually outputs at different times a first drive signal that drives the first sensor array, and a second drive signal that the second sensor array; and a light source configured that emits and illuminates a document during periods between the first drive signal and the second drive signal output next after the first drive signal, and periods between the second drive signal and the first drive signal output next after the second drive signal.

9. 发明授权

US10341522B2 Image capture and output method 有权
公开(公告)号：US10341522B2
公开(公告)日：2019-07-02
申请号：US15843502
申请日：2017-12-15
申请人： Teco Image Systems Co., Ltd.
发明人： Nai-Wun Luo , Cheng-Yuan Chen
IPC分类号： H04N1/00 , H04N1/047 , H04N5/369 , H04N1/32 , H04N1/191 , G06F3/0354
摘要： An image capture and output method comprises steps of providing an image capture device, continuously capturing a plurality of line images from an initial position and recording a position information corresponded to each line image, calculating the difference between the position information of the first line image and the initial position and the differences between the position information of each of the rest line images and a former one of the line image to obtain a fill information, filling each line image into an image buffer according to the fill information, and outputting the image buffer as a product image. Therefore, the deformation issue is effectively solved, the storage memory is saved, and the manufacturing cost is lowered.

10. 发明授权

US10118412B2 Scanning inkjet printing assembly 有权
公开(公告)号：US10118412B2
公开(公告)日：2018-11-06
申请号：US15845491
申请日：2017-12-18
申请人： Océ Holding B.V.
发明人： Brian A. J. Albert , Glen Field , Maarten J. H. Elferink , Matthew Rektor
IPC分类号： B41J11/00 , B41J19/14 , B41J19/20 , H04N1/12 , H04N1/191 , B41J11/42 , B41J11/46 , B41J2/21
摘要： A scanning inkjet printing method comprises arranging a recording medium on a print surface; moving a carriage supporting at least one inkjet print head over the recording medium on the print surface in a scanning direction, while image-wise applying droplets of a liquid to the recording medium to form a first swath of printed dots on the recording medium; moving the recording medium and the carriage relative to each other in a transport direction, wherein the transport direction is transverse to the scanning direction; moving the carriage over the recording medium on the print surface in the scanning direction, while image-wise applying droplets of the liquid to the recording medium to form a second swath of printed dots on the recording medium; detecting a position of the first swath; determining a sub-carriage movement relative to the carriage in response to the detected position of the first swath to position the second swath relative to the first swath, wherein the sub-carriage is supported by the carriage and the movement comprises an amount of translation in the transport direction transverse to the scanning direction and an amount of rotation around a rotation axis, wherein said rotation axis is perpendicular to the print surface; and moving the sub-carriage in accordance with the determined amount of translation and the determined amount of rotation. Thus, the first and the second swath may be positioned accurately adjacent to reduce visibility of stitching inaccuracies between adjacent swaths.

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