-
公开(公告)号：US10582092B2
公开(公告)日：2020-03-03
申请号：US15591789
申请日：2017-05-10
发明人： Katsuhiro Ishido , Daisuke Akagi
IPC分类号： H04N1/00 , H04N1/58 , H04N5/372 , H01J37/153 , H04N1/60 , H04N1/04 , H04N1/047 , H04N1/401 , H04N1/48
摘要： An image reading apparatus includes a front-side reader, which includes a white LED configured to irradiate an original with light and a CMOS sensor configured to receive light that is reflected by the original. The front-side reader is configured to generate read data that represents a luminance value of an image on the original from the result of receiving light with the CMOS sensor. The image reading apparatus stores, in a non-volatile memory, a condition for determining whether there is a sub-scanning color shift, and uses a sub-scanning color shift detector to determine whether there is a sub-scanning color shift based on the read data obtained from the front-side reader and the condition stored in the non-volatile memory. When there is a sub-scanning color shift, the image reading apparatus corrects the sub-scanning color shift by correcting the read data with a color shift corrector.
-
公开(公告)号：US10044890B2
公开(公告)日：2018-08-07
申请号：US15085034
申请日：2016-03-30
发明人： Hayato Koyama , Katsuhiro Ishido , Daisuke Morikawa , Hirotaka Seki , Toshitaka Noro , Yuzuru Yano
IPC分类号： H04N1/00
摘要： An image reading apparatus which is capable of successfully reading an image off an original by correctly detecting a size of the original without degrading productivity even if mixed-size originals are placed on an original tray with edges not aligned. An image reading unit reads an image off an original passing through a reading position. An original size detection sensor detects an original. A first original size is determined using a result of detection by the original size detection sensor, and a second original size is determined using the image read off the original. The first original size or the second original size is adopted as an original size.
-
3.发明申请公开(公告)号：US20170331983A1
公开(公告)日：2017-11-16
申请号：US15591789
申请日：2017-05-10
发明人： Katsuhiro Ishido , Daisuke Akagi
CPC分类号： H04N1/6077 , H04N1/028 , H04N1/0464 , H04N1/0473 , H04N1/40 , H04N1/401 , H04N1/486 , H04N1/58 , H04N1/6005 , H04N2201/0094
摘要： An image reading apparatus includes a front-side reader, which includes a white LED configured to irradiate an original with light and a CMOS sensor configured to receive light that is reflected by the original. The front-side reader is configured to generate read data that represents a luminance value of an image on the original from the result of receiving light with the CMOS sensor. The image reading apparatus stores, in a non-volatile memory, a condition for determining whether there is a sub-scanning color shift, and uses a sub-scanning color shift detector to determine whether there is a sub-scanning color shift based on the read data obtained from the front-side reader and the condition stored in the non-volatile memory. When there is a sub-scanning color shift, the image reading apparatus corrects the sub-scanning color shift by correcting the read data with a color shift corrector.
-
公开(公告)号：US11025801B2
公开(公告)日：2021-06-01
申请号：US16721242
申请日：2019-12-19
发明人： Daisuke Akagi , Katsuhiro Ishido
IPC分类号： H04N1/04 , H04N1/62 , H04N1/028 , H04N1/40 , H04N1/409 , H04N1/00 , H04N1/10 , H04N1/193 , H04N1/48
摘要： An original image is read as an aggregate of a plurality of pixels in which adjacent pixels have different colors (R, G, and B) in a main scanning direction and in a sub-scanning direction, and the read pixels of the respective colors are stored in a line memory in association with information on relative positions of the pixels with respect to another pixel. Then, the stored pixels are sorted so that pixels having the same color are adjacent to each other, and an abnormal pixel (dust) not present in the original image is detected based on the state of the sorted pixels. With this, the dust not present in the original image is detected without increasing the cost, and the dust is corrected without forming a conspicuous trace of correction.
-
公开(公告)号：US20200057408A1
公开(公告)日：2020-02-20
申请号：US16532805
申请日：2019-08-06
发明人： Katsuhiro Ishido
IPC分类号： G03G15/00
摘要： An optical sensor includes a first LED, a second LED, a first PD, and a second PD. The first LED and the second LED are configured to irradiate an optical-axis center point of an intermediate transfer belt. The first PD is arranged at a position at which specularly reflected light of light emitted from the first LED and diffused reflected light of light emitted from the second LED are received. The second PD is arranged at a position at which diffused reflected light of the light emitted from the first LED is received.
-
公开(公告)号：US20190141216A1
公开(公告)日：2019-05-09
申请号：US16201845
申请日：2018-11-27
发明人： Daisuke Akagi , Katsuhiro Ishido
摘要： An original image is read as an aggregate of a plurality of pixels in which adjacent pixels have different colors (R, G, and B) in a main scanning direction and in a sub-scanning direction, and the read pixels of the respective colors are stored in a line memory in association with information on relative positions of the pixels with respect to another pixel. Then, the stored pixels are sorted so that pixels having the same color are adjacent to each other, and an abnormal pixel (dust) not present in the original image is detected based on the state of the sorted pixels. With this, the dust not present in the original image is detected without increasing the cost, and the dust is corrected without forming a conspicuous trace of correction.
-
公开(公告)号：US20170126929A1
公开(公告)日：2017-05-04
申请号：US15334078
申请日：2016-10-25
发明人： Toshitaka Noro , Hirotaka Seki , Katsuhiro Ishido
CPC分类号： H04N1/3878 , H04N1/00718 , H04N1/00748 , H04N1/00809 , H04N1/4092 , H04N2201/0094
摘要： Provided is an image reading apparatus configured to recognize edge portions of an image of an original precisely without being influenced by the varying state of the four sides of the original. The image reading apparatus includes an image reading unit configured to read the original image by scanning the original, an edge determining unit configured to determine first edge locations at the left end and right end of the original image in a main scanning direction, an edge detector configured to detect a second edge location of the original image in a sub-scanning direction, a tilt expression calculator configured to calculate a linear expression that represents the amount of inclination of the original image with respect to the main scanning direction.
-
公开(公告)号：US09386177B2
公开(公告)日：2016-07-05
申请号：US14674981
申请日：2015-03-31
发明人： Katsuhiro Ishido
CPC分类号： H04N1/00798 , H04N1/04
摘要： In the original reading apparatus configured to store the image data in the image storing unit such as temporary storage memory, time required to complete the overwriting for erasure is reduced. The image data read by the image reading unit is stored in the image data storing unit and the stored image data is output. To hold data stored in the image data storing unit, refresh processing, which is to perform processing intermittently required to hold the data stored in the image data storing unit, is performed at a predetermined execution frequency. After the image data is output, frequency to execute the refresh processing is reduced as compared to a predetermined execution frequency to perform writing of the dummy data.
摘要翻译： 在被配置为将图像数据存储在诸如临时存储存储器的图像存储单元中的原始读取装置中，完成擦除重写所需的时间减少。 由图像读取单元读取的图像数据被存储在图像数据存储单元中，并输出存储的图像数据。 为了保存存储在图像数据存储单元中的数据，以预定的执行频率执行用于执行间歇地执行保存存储在图像数据存储单元中的数据所需的处理的刷新处理。 在输出图像数据之后，与预定的执行频率相比，执行刷新处理的频率降低，以执行伪数据的写入。
-
公开(公告)号：US11451687B2
公开(公告)日：2022-09-20
申请号：US17239581
申请日：2021-04-24
发明人： Daisuke Akagi , Katsuhiro Ishido
IPC分类号： H04N1/04 , H04N1/62 , H04N1/028 , H04N1/40 , H04N1/409 , H04N1/00 , H04N1/10 , H04N1/193 , H04N1/48
摘要： An original image is read as an aggregate of a plurality of pixels in which adjacent pixels have different colors (R, G, and B) in a main scanning direction and in a sub-scanning direction, and the read pixels of the respective colors are stored in a line memory in association with information on relative positions of the pixels with respect to another pixel. Then, the stored pixels are sorted so that pixels having the same color are adjacent to each other, and an abnormal pixel (dust) not present in the original image is detected based on the state of the sorted pixels. With this, the dust not present in the original image is detected without increasing the cost, and the dust is corrected without forming a conspicuous trace of correction.
-
公开(公告)号：US11126130B2
公开(公告)日：2021-09-21
申请号：US16532805
申请日：2019-08-06
发明人： Katsuhiro Ishido
IPC分类号： G03G15/00
摘要： An optical sensor includes a first light emitting diode (LED), a second LED, a first photodiode (PD), and a second PD. The first LED and the second LED are configured to irradiate an optical-axis center point of an intermediate transfer belt. The first PD is arranged at a position at which specularly reflected light of light emitted from the first LED and diffused reflected light of light emitted from the second LED are received. The second PD is arranged at a position at which diffused reflected light of the light emitted from the first LED is received.
-
-
-
-
-
-
-
-
-
搜索结果
18 条记录 (耗时 0.039 秒)
