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1. 发明申请

US20230007129A1 IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS 有权
公开(公告)号：US20230007129A1
公开(公告)日：2023-01-05
申请号：US17848638
申请日：2022-06-24
申请人： CANON KABUSHIKI KAISHA
发明人： Hidenori Sunada
IPC分类号： H04N1/00 , H04N1/04
摘要： An image reading apparatus includes a document tray, a detection unit, a sheet feeding unit, a conveyance unit, a reading unit, a sheet discharge unit, a sheet discharge tray, and a control unit configured to stop feeding of the document by the sheet feeding unit in a case where the detection unit detects that there is no document present on the document tray. The control unit is configured to execute a first mode and a second mode, the first mode being a mode in which the sheet feeding unit stops feeding of documents in a case where the number of documents having been discharged continuously by the sheet discharge unit has reached a predetermined number of sheets, and the second mode being a mode in which the sheet feeding unit continues feeding of the documents regardless of the number of documents having been discharged continuously by the sheet discharge unit.

2. 发明申请

US20210037158A1 DOCUMENT READING APPARATUS 有权
公开(公告)号：US20210037158A1
公开(公告)日：2021-02-04
申请号：US16931892
申请日：2020-07-17
申请人： CANON KABUSHIKI KAISHA
发明人： Kenji Ooki , Hidenori Sunada
IPC分类号： H04N1/00 , H04N1/40 , H04N1/401
摘要： A document reading apparatus including: a detector configured to detect presence of a document on a document tray; a conveyance unit configured to convey the document; a reading unit configured to read the document conveyed by the conveyance unit at a first position; and a reference member. When the detector detects the presence of a document, the reading unit reads the reference member to determine a shading correction value while being moved from a second position to a third position located between the first position and the second position. When the shading correction value is to be determined again in a period from when the shading correction value is determined until when a receiver receives an instruction to start reading, the reading unit reads the reference member while being moved from the second position toward the first position after having been moved from the third position to the second position.

3. 发明授权

US10289358B2 Image forming apparatus that improves FCOT 有权
公开(公告)号：US10289358B2
公开(公告)日：2019-05-14
申请号：US15245592
申请日：2016-08-24
申请人： CANON KABUSHIKI KAISHA
发明人： Masato Furukawa , Satoshi Seki , Yohei Katto , Akiko Kanno , Hidenori Sunada , Asahiro Nakayoshi , Seiji Shibaki , Kaoru Hamada , Yumeng Zhang
IPC分类号： G06F3/12 , H04N1/23 , H04N1/00 , G03G15/23 , G03G15/24 , G03G15/00 , G03G21/14 , H04N1/21
摘要： An image forming apparatus which is capable of reading an original, temporarily storing image data in a storage unit, and then transferring the image data to an image forming unit to improve FCOT in forming an image. A memory stores image data output from image reading units. An image forming unit forms an image on a recording medium based on the image data stored in the memory. A first memory output frequency in a first mode in which one side of an original is read and an image is formed on one side of a recording medium is lower than a second memory output frequency in a second mode in which both sides of an original are read and an image is formed both sides of a recording medium.

4. 发明授权

US10110776B2 Image reading apparatus and image reading method 有权
公开(公告)号：US10110776B2
公开(公告)日：2018-10-23
申请号：US15672079
申请日：2017-08-08
申请人： CANON KABUSHIKI KAISHA
发明人： Hidenori Sunada , Asahiro Nakayoshi
IPC分类号： G06K15/00 , H04N1/387 , H04N1/00
摘要： An image reading apparatus reads an original image of an original placed on an original tray by a scanner unit. The original is conveyed to a reading position used by the scanner unit from the original tray through a conveyance path. A registration roller pair configured to mechanically correct skew of the original at a time of conveyance of the original is provided on the conveyance path. The image reading apparatus calculates a skew amount at the time of the conveyance of the original based on the original image, and conducts image processing on the original image based on the skew amount, to thereby correct a tilt of the original image. The image reading apparatus stops the conveyance of the original when the absolute value of the skew amount is larger than a first threshold value.

5. 发明授权

US09420135B2 Sheet reading apparatus 有权
标题翻译：纸张读取装置
公开(公告)号：US09420135B2
公开(公告)日：2016-08-16
申请号：US14615917
申请日：2015-02-06
申请人： CANON KABUSHIKI KAISHA
发明人： Hidenori Sunada , Satoshi Seki , Asahiro Nakayoshi
IPC分类号： H04N1/04 , H04N1/00 , H04N1/12
CPC分类号： H04N1/00588 , H04N1/00477 , H04N1/00506 , H04N1/00625 , H04N1/00761 , H04N1/00771 , H04N1/00777 , H04N1/121 , H04N1/3263 , H04N2201/0081
摘要： An image reading apparatus conveys a sheet of a sheet bundle on a document tray along a conveyance path one by one, reads images on the sheet and then, delivers the sheet to an output tray. By receiving driving force from a single driving source, each roller included in the image reading apparatus conveys the sheet along with the conveyance path in order. Each roller includes a feed roller, a separation roller, a conveyance roller, and a delivery roller. The reader included in the image reading apparatus obtains images on the sheet passing through the reading position which is set on the conveyance path.
摘要翻译：图像读取装置沿着输送路径一张一张地输送原稿托盘上的纸张束，读取纸张上的图像，然后将纸张输送到出纸托盘。通过从单个驱动源接收驱动力，包括在图像读取装置中的每个滚子依次传送纸张与输送路径。每个辊包括进料辊，分离辊，输送辊和输送辊。包括在图像读取装置中的读取器获得通过设置在输送路径上的读取位置的纸张上的图像。

6. 发明授权

US11991324B2 Document reading apparatus and image forming apparatus for executing in using modes of multiple documents having different sizes 有权
公开(公告)号：US11991324B2
公开(公告)日：2024-05-21
申请号：US18310625
申请日：2023-05-02
申请人： CANON KABUSHIKI KAISHA
发明人： Hidenori Sunada
IPC分类号： H04N1/00
CPC分类号： H04N1/00633 , H04N1/00615 , H04N1/0071
摘要： A document reading apparatus includes a stacking portion on which a plurality of documents are stacked, a feeding unit configured to feed the plurality of documents in a feeding direction, a reading unit configured to read the documents, a drive source configured to drive the feeding unit, and a control unit configured to execute a mode in which the plurality of documents having different sizes are fed by the feeding unit and read by the reading unit. The control unit is configured to control the drive source in the mode such that the feeding unit feeds a first document at a first feeding speed, and the feeding unit feeds a second document following the first document at a second feeding speed higher than the first feeding speed in a case where the width of the first document is larger than a predetermined width.

7. 发明授权

US09681011B2 Original reading apparatus with original tray, and control method therefor 有权
公开(公告)号：US09681011B2
公开(公告)日：2017-06-13
申请号：US14993135
申请日：2016-01-12
申请人： CANON KABUSHIKI KAISHA
发明人： Asahiro Nakayoshi , Hidenori Sunada , Satoshi Seki
IPC分类号： G06F15/00 , H04N1/00
CPC分类号： H04N1/0057 , H04N1/0062 , H04N1/00631 , H04N1/00713
摘要： An original reading apparatus includes an original tray. A conveyance unit conveys an original of an original bundle on the original tray. A reading unit reads the original conveyed. A first detection unit detects a first length of the original in a principal scanning direction. A second detection unit detects a second length of the original bundle in an auxiliary scanning direction. A third detection unit detects the original conveyed. A prediction unit predicts an original size by selecting from candidates corresponding to the first length in a first prediction mode, or by determining based on the first and second lengths in a second prediction mode. A specifying unit specifies the original size based on the first length and a length in the auxiliary scanning direction detected by the third detection unit. A change unit changes the prediction mode when the predicted original size differs from the specified original size.

8. 发明申请

US20170041478A1 IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS 审中-公开
标题翻译：图像读取装置和图像形成装置
公开(公告)号：US20170041478A1
公开(公告)日：2017-02-09
申请号：US15211926
申请日：2016-07-15
申请人： CANON KABUSHIKI KAISHA
发明人： Asahiro Nakayoshi , Hidenori Sunada , Hiromasa Maenishi
IPC分类号： H04N1/00
CPC分类号： H04N1/00801 , H04N1/00713 , H04N1/00726 , H04N1/00745 , H04N1/00771 , H04N1/00777 , H04N2201/0081 , H04N2201/0091
摘要： An image reading apparatus includes: a first size-detecting portion which detects a size of an original disposed on a disposing portion; a conveying portion which conveys the original disposed on the disposing portion to a reading portion, a second size-detecting portion which detects the size of the original to be conveyed by the conveying portion; a controller which calculates an overlap region between a reading region and an original region, with the reading region determined based on a reading size obtained by a obtain portion and the detection of the first size-detecting portion, and the original region determined by the second size-detecting portion; and a notifying portion which makes a predetermined notification based on the information that has been calculated.
摘要翻译：图像读取装置包括：第一尺寸检测部，其检测设置在布置部上的原稿的尺寸; 输送部，其将设置在所述配置部上的原稿输送到读取部;第二尺寸检测部，其检测由所述输送部输送的原稿的尺寸; 计算读取区域和原始区域之间的重叠区域的控制器，其中基于由获取部分获得的读取尺寸和第一尺寸检测部分的检测确定的读取区域，以及由第二尺寸检测部件确定的原始区域尺寸检测部分; 以及基于已经计算的信息进行预定通知的通知部分。

9. 发明授权

US08953231B2 Document reading apparatus and document reading method 有权
标题翻译：文件阅读装置和文件阅读方法
公开(公告)号：US08953231B2
公开(公告)日：2015-02-10
申请号：US14102933
申请日：2013-12-11
申请人： Canon Kabushiki Kaisha
发明人： Asahiro Nakayoshi , Kenji Morita , Yohei Katto , Akiko Kanno , Hidenori Sunada , Satoshi Seki
IPC分类号： H04N1/04 , H04N1/60 , G06F3/12 , G06F15/00 , G06K15/00 , H04N1/40 , B65H7/02 , G03G15/00 , B42F13/00 , H04N1/00
CPC分类号： H04N1/00588 , H04N1/00602 , H04N1/00726 , H04N1/00745 , H04N1/00779 , H04N1/00806 , H04N1/00822 , H04N1/00827
摘要： Provided is a document reading apparatus capable of suppressing a shock that may occur when a trailing edge of a tabbed sheet passes through a roller pair. In an image reading section, when a document to be read is the tabbed sheet, a timing to start separation of the roller pair in response to detection of a trailing edge of the document is delayed by a time period corresponding to a tab length with respect to the timing to start separation when a document other than the tabbed sheet is conveyed. Thus, it is possible to prevent the shock when the trailing edge of the tabbed sheet passes through the roller pair, and to thereby suppress image reading failure due to the shock.
摘要翻译：提供了一种能够抑制当片状片材的后缘通过辊对时可能发生的冲击的文件读取装置。在图像读取部中，当要读取的文档是标签页时，响应于文档的后沿的检测而开始分离辊对的定时被延迟与对应于标签长度的时间段相对当输送除了标签纸之外的文件时，开始分离的时间。因此，可以防止当带状片的后缘通过辊对时的冲击，从而抑制由于冲击引起的图像读取失败。

10. 发明申请

US20140043664A1 SHEET CONVEYANCE DEVICE THAT CAN DETECT SHEET SIZE 有权
标题翻译：可以检测片材尺寸的片材输送装置
公开(公告)号：US20140043664A1
公开(公告)日：2014-02-13
申请号：US13956617
申请日：2013-08-01
申请人： CANON KABUSHIKI KAISHA
发明人： Hidenori Sunada
IPC分类号： H04N1/00
CPC分类号： H04N1/00588 , H04N1/00713 , H04N1/00734 , H04N1/00745 , H04N1/00766 , H04N1/00779
摘要： A sheet conveyance device is capable of detecting a sheet length in a conveyance direction correctly, and of detecting a length of a non-standard size sheet correctly. A detection unit detects front and rear ends of a sheet conveyed with a conveyance unit. A measurement unit measures sheet length in a conveyance direction based on a detection result of the detection unit. An acquisition unit acquires a reference length of the sheet. A computation unit computes a correction value that is used to correct a length measured by the measurement unit based on length measured and the reference length acquired in a correction mode. A storage unit stores the correction value computed. A determination unit determines sheet length corrected based on the correction value and the length measured at the time of conveyance of a sheet in a mode other than correction mode.
摘要翻译：纸张输送装置能够正确地检测输送方向上的纸张长度，并且能够正确地检测非标准尺寸的纸张的长度。检测单元检测由输送单元输送的纸张的前端和后端。测量单元基于检测单元的检测结果来测量输送方向上的纸张长度。采集单元获取纸张的参考长度。计算单元计算用于校正由测量单元测量的长度的校正值，所述测量单元基于测量的长度和在校正模式中获取的参考长度。存储单元存储所计算的校正值。确定单元基于校正值和在校正模式以外的模式下传送纸张时测量的长度来确定校正的纸张长度。

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