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1.发明授权公开(公告)号：US12108003B2
公开(公告)日：2024-10-01
申请号：US18450276
申请日：2023-08-15
发明人： Keisuke Ikemiya , Norikazu Honda
CPC分类号： H04N1/00774 , H04N1/00689 , H04N1/00692 , H04N1/00708 , H04N1/00734 , H04N1/03
摘要： An image reading apparatus includes a document table, a pressing plate that rotates about a rotation axis between an open position and a closed position, a line sensor that includes an image sensor arranged in a main scanning direction intersecting the rotation axis and outputs data by reading a document on the document table, and a control unit that determines presence or absence of the document based on first data acquired by the line sensor when the pressing plate is in an intermediate position before reaching the closed position and second data acquired by the line sensor when the pressing plate is in the closed position, wherein when the control unit determines the presence or absence of the document based on the first data and the second data, the control unit uses coefficient data that is smaller as a distance from the rotation axis is longer.
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公开(公告)号：US12105303B2
公开(公告)日：2024-10-01
申请号：US18566754
申请日：2022-06-08
发明人： Hideki Matsui , Yohei Nokami
CPC分类号： G02B3/0062 , H04N1/0306 , H04N1/191 , G02B2003/0093 , H04N2201/0081
摘要： An optical member includes a lens array including lens bodies, and transmissive members. The transmissive members are made of a material having a uniform refractive index, and are disposed at positions nearer an object-to-be-read than the corresponding lens bodies are disposed or at positions farther from the object-to-be-read than the corresponding lens bodies are disposed. The transmissive members have a columnar shape extending along the optical axes of the lens bodies, and allow light incident through one end faces to exit through the other end faces. At least either ones of the lens bodies or the transmissive members are arranged with distances therebetween larger than errors in the arrangement of the lens bodies and the transmissive members.
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公开(公告)号：US20240236252A1
公开(公告)日：2024-07-11
申请号：US18398294
申请日：2023-12-28
发明人： KENJI OOKI
CPC分类号： H04N1/00806 , H04N1/03 , H04N1/1061 , H04N1/2038
摘要： An image reading apparatus includes a platen on which an original is to be placed, a scanner unit configured to emit light to the original placed on the platen and receive light reflected from the original, to thereby read an image of the original, and at least one processor configured to control the scanner unit to generate an image signal representing the image based on a result of reading the image of the original by the scanner unit, wherein, in a case in which a plurality of originals are placed on the platen, the at least one processor is configured to control the scanner unit to emit the light with a first light amount in a case where the plurality of originals are originals having a first type, and emit the light with a second light amount.
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4.发明公开公开(公告)号：US20240205346A1
公开(公告)日：2024-06-20
申请号：US18586728
申请日：2024-02-26
发明人： Shuya OGI , Eiichi NAKAOKA
CPC分类号： H04N1/0312 , H04N1/0306 , H04N2201/02487
摘要： There is provided a method of manufacturing an image sensor unit, the image sensor unit including: a linear light source that illuminates a document along a main scanning direction; a rod lens array that includes a plurality of rod lenses arranged in the main scanning direction and condenses a light reflected from the document; and a linear image sensor that receives a light condensed by the rod lens array. When a rod lens having an optically discontinuous portion on a surface and/or interior of the rod lens is included, the rod lens array is arranged such that the optically discontinuous portion is not located toward the document.
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公开(公告)号：US11843749B2
公开(公告)日：2023-12-12
申请号：US18148891
申请日：2022-12-30
CPC分类号： H04N1/3935 , H04N1/03
摘要： An image processing apparatus that performs processes of reducing read data in a main-scanning direction and a sub-scanning direction, wherein the image reading apparatus includes a plurality of line image sensors having a longitudinal direction as the main-scanning direction, the plurality of line image sensors are displaced in the sub-scanning direction, and the image reading apparatus relatively moves the plurality of line image sensors and an original in the sub-scanning direction, wherein the image processing apparatus comprises: a sub-scanning direction processing unit configured to perform reduction processing in the sub-scanning direction; and a main-scanning direction processing unit configured to connect data after the reduction processing is performed by the sub-scanning direction processing unit in the main-scanning direction and reduces the connected data in the main-scanning direction.
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6.发明公开公开(公告)号：US20230224420A1
公开(公告)日：2023-07-13
申请号：US18148891
申请日：2022-12-30
CPC分类号： H04N1/3935 , H04N1/03
摘要： An image processing apparatus that performs processes of reducing read data in a main-scanning direction and a sub-scanning direction, wherein the image reading apparatus includes a plurality of line image sensors having a longitudinal direction as the main-scanning direction, the plurality of line image sensors are displaced in the sub-scanning direction, and the image reading apparatus relatively moves the plurality of line image sensors and an original in the sub-scanning direction, wherein the image processing apparatus comprises: a sub-scanning direction processing unit configured to perform reduction processing in the sub-scanning direction; and a main-scanning direction processing unit configured to connect data after the reduction processing is performed by the sub-scanning direction processing unit in the main-scanning direction and reduces the connected data in the main-scanning direction.
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公开(公告)号：US11659117B2
公开(公告)日：2023-05-23
申请号：US17703885
申请日：2022-03-24
发明人： Kohei Ishido
CPC分类号： H04N1/00809 , H04N1/00702 , H04N1/00816 , H04N1/0306 , B65H2553/416
摘要： The image forming apparatus includes a sheet conveyance part, an image forming part, and a sheet reading unit. The sheet reading unit includes a line sensor. The line sensor includes split line sensors. The line sensor reads a conveyed sheet. The line sensor includes a plurality of split line sensors. The split line sensors are placed at non-stretching positions, respectively. Each non-stretching position is such a position that as in the main scanning direction, a main-scanning-direction distance from a gap between one split line sensor and another split line sensor to an ideal edge position of every usable regular size exceeds a permissible value.
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公开(公告)号：US11523022B2
公开(公告)日：2022-12-06
申请号：US15849899
申请日：2017-12-21
发明人： Shuya Ogi , Eiichi Nakaoka
摘要： There is provided a method of manufacturing an image sensor unit, the image sensor unit including: a linear light source that illuminates a document along a main scanning direction; a rod lens array that includes a plurality of rod lenses arranged in the main scanning direction and condenses a light reflected from the document; and a linear image sensor that receives a light condensed by the rod lens array. When a rod lens having an optically discontinuous portion on a surface and/or interior of the rod lens is included, the rod lens array is arranged such that the optically discontinuous portion is not located toward the document.
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公开(公告)号：US11483444B2
公开(公告)日：2022-10-25
申请号：US16984098
申请日：2020-08-03
发明人： Masaki Hachisuga
摘要： An optical device includes a lens body including plural lenses of which optical axes are arranged alongside each other, and having an intermediate image forming surface for forming an erect real image of equal magnification formed in an optical path, a light shielding body that is provided to face a light incident surface of the lens body, and includes a transmitting portion that is positioned on the optical axes of the plural lenses and transmits light and a light shielding unit that is positioned on a portion other than the optical axes of the plural lenses and shields the passage of light, and a regulating body that is provided to face a light incident surface of the light shielding body, includes an opening narrower than the transmitting portion, and regulates a part of light toward the transmitting portion.
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公开(公告)号：US11178304B2
公开(公告)日：2021-11-16
申请号：US17030957
申请日：2020-09-24
发明人： Yuki Kamio , Katsutoshi Miyahara , Yuichi Sato , Takahiro Ode
摘要： An object of one embodiment of the present invention is to accurately derive an inclination of a line image sensor. One embodiment of the present invention is an image reading apparatus including: a line image sensor in which reading elements for reading an image are arrayed in a predetermined direction; a first derivation unit configured to, based on read data acquired by reading a chart on which a plurality of dot patterns is printed with the line image sensor, derive coordinates of each of the plurality of dot patterns; a second derivation unit configured to derive an inclination angle of the line image sensor based on the coordinates derived by the first derivation unit; and a first calculation unit configured to calculate a first correction value for correcting the inclination of the line image sensor based on the inclination angle derived by the second derivation unit.
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