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1. 发明授权

US09800748B2 Automatic document feeder, image reading device incorporating the automatic document feeder, and image forming apparatus incorporating the image reading device 有权
公开(公告)号：US09800748B2
公开(公告)日：2017-10-24
申请号：US15347932
申请日：2016-11-10
申请人： Toshiyuki Horikawa , Yasunobu Youda , Yohei Osanai , Tatsuaki Nagano , Satoshi Narai , Takuji Kawai , Daisuke Imaki , Takayuki Andoh , Susumu Miyazaki , Yuki Fujii , Koichi Ono , Takeshi Shikama , Hiroaki Ikeda , Shingo Shiramura , Hideo Tanaka , Tetsuo Inui
发明人： Toshiyuki Horikawa , Yasunobu Youda , Yohei Osanai , Tatsuaki Nagano , Satoshi Narai , Takuji Kawai , Daisuke Imaki , Takayuki Andoh , Susumu Miyazaki , Yuki Fujii , Koichi Ono , Takeshi Shikama , Hiroaki Ikeda , Shingo Shiramura , Hideo Tanaka , Tetsuo Inui
IPC分类号： B65H3/06 , H04N1/00 , B65H5/06 , B65H7/00 , G03G15/00 , B65H3/52
CPC分类号： H04N1/0057 , B65H3/0669 , B65H3/5261 , B65H5/06 , B65H7/00 , B65H2402/441 , B65H2403/541 , B65H2403/721 , B65H2801/06 , G03G15/602 , G03G15/6529 , H04N1/0032 , H04N2201/0094
摘要： An automatic document feeder that is included in an image reader of an image forming apparatus includes a sheet conveying roller, a document feeder cover, a projection piece, a motor, a driving side gear, and a driving force transmission device including an idler gear, a driving force release gear, a slide body, a first elastic body to bias the idler gear and the driving force release gear to be separated, a second elastic body to bias the driving force release gear and the slide body to be separated, and a drive shaft. The driving force transmission device meshes the driving and driven side meshing portions together with a biasing force applied by the second elastic body when the document feeder cover is closed, and releases the driving and driven side meshing portions with a biasing force applied by the first elastic body when the document feeder cover is opened.

2. 发明授权

US10027831B2 Image reading unit 有权
公开(公告)号：US10027831B2
公开(公告)日：2018-07-17
申请号：US15348782
申请日：2016-11-10
申请人： Takuji Kawai , Yasunobu Youda , Yohei Osanai , Tatsuaki Nagano , Satoshi Narai , Toshiyuki Horikawa , Daisuke Imaki , Takayuki Andoh , Susumu Miyazaki , Tetsuo Inui , Yuki Fujii , Koichi Ono , Takeshi Shikama , Shingo Shiramura , Hideo Tanaka
发明人： Takuji Kawai , Yasunobu Youda , Yohei Osanai , Tatsuaki Nagano , Satoshi Narai , Toshiyuki Horikawa , Daisuke Imaki , Takayuki Andoh , Susumu Miyazaki , Tetsuo Inui , Yuki Fujii , Koichi Ono , Takeshi Shikama , Shingo Shiramura , Hideo Tanaka
IPC分类号： H04N1/04 , H04N1/00
摘要： An image-reading unit includes an original document conveyor that includes a first original document tray to hold an original document to be read, a first original document feeding port to feed the original document placed on the first original document tray, and an original document conveying path to convey the original document from the first original document feeding port to an original document discharging port. The original document conveyor further includes an openable second original document tray attached near an intermediate portion of the original document conveying path to hold an original document when opened, and a second original document feeding port to feed the original document on the second original document tray. The image-reading unit further includes an image reader to read an image of the original document being conveyed along the original document conveying path.

3. 发明授权

US10200564B2 Image reading device, method and non-transitory computer-readable medium for detecting moving image reader positions to correct skew 有权
公开(公告)号：US10200564B2
公开(公告)日：2019-02-05
申请号：US15397768
申请日：2017-01-04
申请人： Yuki Fujii , Yasunobu Youda , Yohei Osanai , Tatsuaki Nagano , Satoshi Narai , Toshiyuki Horikawa , Takuji Kawai , Daisuke Imaki , Takayuki Andoh , Susumu Miyazaki , Tetsuo Inui , Koichi Ono , Takeshi Shikama , Shingo Shiramura , Hideo Tanaka
发明人： Yuki Fujii , Yasunobu Youda , Yohei Osanai , Tatsuaki Nagano , Satoshi Narai , Toshiyuki Horikawa , Takuji Kawai , Daisuke Imaki , Takayuki Andoh , Susumu Miyazaki , Tetsuo Inui , Koichi Ono , Takeshi Shikama , Shingo Shiramura , Hideo Tanaka
IPC分类号： H04N1/387 , H04N1/04 , H04N1/047
摘要： An image reading device includes: a reading unit; a first detecting unit that detects a position of the reading unit in the sub-scanning direction; a second detecting unit that detects a position of the reading unit in the sub-scanning direction; and a calculating unit that calculates a skew quantity and a skew direction of the reading unit, based on a difference, introduced by the skew, between a travel distance by which the reading unit has travelled from a measurement reference position located on an upstream side of the first detecting unit and the second detecting unit in a moving direction to a point where the reading unit is detected by the first detecting unit, and a travel distance by which the reading unit has travelled from the measurement reference position to a point where the reading unit is detected by the second detecting unit.

4. 发明授权

US10412246B2 Image reading unit 有权
公开(公告)号：US10412246B2
公开(公告)日：2019-09-10
申请号：US16008432
申请日：2018-06-14
申请人： Takuji Kawai , Yasunobu Youda , Yohei Osanai , Tatsuaki Nagano , Satoshi Narai , Toshiyuki Horikawa , Daisuke Imaki , Takayuki Andoh , Susumu Miyazaki , Tetsuo Inui , Yuki Fujii , Koichi Ono , Takeshi Shikama , Shingo Shiramura , Hideo Tanaka
发明人： Takuji Kawai , Yasunobu Youda , Yohei Osanai , Tatsuaki Nagano , Satoshi Narai , Toshiyuki Horikawa , Daisuke Imaki , Takayuki Andoh , Susumu Miyazaki , Tetsuo Inui , Yuki Fujii , Koichi Ono , Takeshi Shikama , Shingo Shiramura , Hideo Tanaka
IPC分类号： H04N1/04 , H04N1/00
摘要： An image-reading unit includes an original document conveyor that includes a first original document tray to hold an original document to be read, a first original document feeding port to feed the original document placed on the first original document tray, and an original document conveying path to convey the original document from the first original document feeding port to an original document discharging port. The original document conveyor further includes an openable second original document tray attached near an intermediate portion of the original document conveying path to hold an original document when opened, and a second original document feeding port to feed the original document on the second original document tray. The image-reading unit further includes an image reader to read an image of the original document being conveyed along the original document conveying path.

5. 发明授权

US10462330B2 Image reading device, pressure plate opening/closing detection method, and image forming apparatus 有权
公开(公告)号：US10462330B2
公开(公告)日：2019-10-29
申请号：US15939375
申请日：2018-03-29
申请人： Tetsuo Inui , Susumu Miyazaki
发明人： Tetsuo Inui , Susumu Miyazaki
IPC分类号： H04N1/401 , H04N1/00 , G03G15/00 , H04N1/40
摘要： An image reading device including a contact glass; a reading unit; a pressure plate; a pressure-plate opening/closing sensor; and circuitry. The circuitry determines a presence or absence of external light input to a space between the pressure plate and the surface of the contact glass based on image data obtained by the reading unit when the light source is turned off; compares read data according to light emitted from the light source and received by the image sensor when the pressure plate is closed, with read data of a reference value obtained when the pressure plate is completely closed, to obtain a difference and determine a state of the read data based on the difference; and determines whether the pressure plate is open or closed based on a determination result of the presence or absence of external light and on the difference.

6. 发明授权

US08654419B2 Image forming apparatus and image density detecting method 有权
标题翻译：图像形成装置和图像浓度检测方法
公开(公告)号：US08654419B2
公开(公告)日：2014-02-18
申请号：US13415082
申请日：2012-03-08
申请人： Susumu Miyazaki , Izumi Kinoshita , Motohiro Kawanabe , Takeshi Shikama , Takuhei Yokoyama , Tatsuya Miyadera
发明人： Susumu Miyazaki , Izumi Kinoshita , Motohiro Kawanabe , Takeshi Shikama , Takuhei Yokoyama , Tatsuya Miyadera
IPC分类号： H04N1/46
CPC分类号： H04N1/3878 , H04N1/407 , H04N1/409
摘要： An image forming apparatus performs pseudo gradation processing using dithering, and includes an image carrier; a plurality of light-emitting element arrays arranged in a main-scanning direction and including a plurality of light-emitting elements; an image forming unit performing lighting control of the arrays and forming a pattern image on the image carrier; a detecting unit detecting a density of the pattern image; a position detecting unit detecting a position in the main-scanning direction of the detecting unit with respect to the light-emitting element arrays; a determining unit that, based on the detected position, determines whether the detecting unit is positioned at a proper detection position with respect to the pattern image on which noise has no effect; and an operation control unit that, when the detecting unit is positioned at the proper detection position, performs an image density detection operation on the pattern image using the detecting unit.
摘要翻译：图像形成装置使用抖动进行伪灰度处理，并且包括图像载体; 沿主扫描方向排列并包括多个发光元件的多个发光元件阵列; 图像形成单元，对所述阵列执行点亮控制，并在所述图像载体上形成图案图像; 检测单元，检测图案图像的浓度; 位置检测单元，相对于所述发光元件阵列检测所述检测单元的主扫描方向的位置; 确定单元，其基于所检测的位置，确定所述检测单元是否位于相对于其上没有影响的图案图像的适当检测位置; 以及操作控制单元，当所述检测单元位于适当的检测位置时，使用所述检测单元对所述图案图像执行图像浓度检测操作。

7. 发明授权

US08600283B2 Method of compensating for errors caused by a print head using skew correction 失效
标题翻译：使用偏斜校正补偿由打印头造成的误差的方法
公开(公告)号：US08600283B2
公开(公告)日：2013-12-03
申请号：US13444018
申请日：2012-04-11
申请人： Izumi Kinoshita , Tatsuya Miyadera , Motohiro Kawanabe , Takeshi Shikama , Susumu Miyazaki , Takuhei Yokoyama
发明人： Izumi Kinoshita , Tatsuya Miyadera , Motohiro Kawanabe , Takeshi Shikama , Susumu Miyazaki , Takuhei Yokoyama
IPC分类号： G03G15/00 , G06F3/12
CPC分类号： G03G15/5058 , B41J2/45 , G03G2215/0141 , G03G2215/0161 , G06K15/1247 , G06K15/1868
摘要： An image forming apparatus includes plural image forming units of plural colors, each including a print head including plural LED chips aligned in a main scanning direction; a screen angle selecting unit that selects screen angles for the plural colors respectively based on the amounts of skew of the plural image forming units; an image processing unit that performs image processing on input data to be expressed by pixels of the plural colors such that the pixels of the colors have the corresponding screen angles selected by the screen angle selecting unit; a correction amount determining unit that determines a total amount of skew correction based on the amount of skew detected by the skew detection unit, and determines the amounts of skew correction in the sub-scanning direction for predetermined groups of the pixels, based on the total amount of skew correction, for each of the colors.
摘要翻译：图像形成装置包括多个颜色的图像形成单元，每个图像形成单元包括在主扫描方向上排列的多个LED芯片的打印头; 屏幕角度选择单元，分别基于多个图像形成单元的偏斜量来选择多种颜色的屏幕角度; 图像处理单元，对由多个颜色的像素表示的输入数据执行图像处理，使得颜色的像素具有由屏幕角度选择单元选择的相应屏幕角度; 校正量确定单元，其基于由所述歪斜检测单元检测到的歪斜量来确定歪斜校正的总量，并且基于总计来确定预定组像素的副扫描方向上的歪斜校正量每种颜色的偏斜校正量。

8. 发明授权

US08576267B2 Optical writing device, image forming apparatus, optical writing method, and computer-readable recording medium 有权
标题翻译：光学写入装置，图像形成装置，光学写入方法和计算机可读记录介质
公开(公告)号：US08576267B2
公开(公告)日：2013-11-05
申请号：US13474062
申请日：2012-05-17
申请人： Motohiro Kawanabe , Tatsuya Miyadera , Masayuki Hayashi , Kunihiro Komai , Yasuo Yamaguchi , Yoshinori Shirasaki , Takeshi Shikama , Izumi Kinoshita , Susumu Miyazaki , Takuhei Yokoyama
发明人： Motohiro Kawanabe , Tatsuya Miyadera , Masayuki Hayashi , Kunihiro Komai , Yasuo Yamaguchi , Yoshinori Shirasaki , Takeshi Shikama , Izumi Kinoshita , Susumu Miyazaki , Takuhei Yokoyama
IPC分类号： B41J2/47 , G06K15/00 , H04N1/405
CPC分类号： G03G15/043 , G03G15/0131 , G03G15/5058 , G06K15/12 , G06K15/1868 , G06K15/1869 , H04N1/405 , H04N1/4078
摘要： An optical writing device stores pieces of dithering information indicating dithering patterns whose densities are different, each piece of dithering information including pieces of identification information associated with pixels of the corresponding dithering pattern, and stores pieces of pixel setting information in which pieces of colored/colorless information indicating each of the pixels is colored or colorless are associated with the pieces of identification information, the pieces of colored/colorless information being set based on a resolution of a light source for forming an electrostatic latent image. The optical writing device also includes a control unit configured to arrange the same dithering patterns in a way that the dithering patterns form a pattern with a given size, and cause the light source to emit light based on information generated by setting the pixels of each of the same dithering patterns to be colored or colorless in accordance with the pixel setting information.
摘要翻译：光学写入装置存储指示密度不同的抖动图案的抖动信息，每个抖动信息包括与相应抖动图案的像素相关联的识别信息，并存储其中有色/无色的像素设置信息指示每个像素的信息被着色或无色与识别信息相关联，基于用于形成静电潜像的光源的分辨率设置彩色/无色信息。光写入装置还包括控制单元，其被配置为以抖动图案形成具有给定尺寸的图案的方式布置相同的抖动图案，并且基于通过设置每个图像的像素而产生的信息使光源发光相同的抖动图案根据像素设置信息被着色或无色。

9. 发明申请

US20120300010A1 OPTICAL WRITING DEVICE, IMAGE FORMING APPARATUS, OPTICAL WRITING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM 有权
标题翻译：光学写入装置，图像形成装置，光学写入方法和计算机可读记录介质
公开(公告)号：US20120300010A1
公开(公告)日：2012-11-29
申请号：US13474062
申请日：2012-05-17
申请人： Motohiro KAWANABE , Tatsuya Miyadera , Masayuki Hayashi , Kunihiro Komai , Yasuo Yamaguchi , Yoshinori Shirasaki , Takeshi Shikama , Izumi Kinoshita , Susumu Miyazaki , Takuhei Yokoyama
发明人： Motohiro KAWANABE , Tatsuya Miyadera , Masayuki Hayashi , Kunihiro Komai , Yasuo Yamaguchi , Yoshinori Shirasaki , Takeshi Shikama , Izumi Kinoshita , Susumu Miyazaki , Takuhei Yokoyama
IPC分类号： B41J2/47
CPC分类号： G03G15/043 , G03G15/0131 , G03G15/5058 , G06K15/12 , G06K15/1868 , G06K15/1869 , H04N1/405 , H04N1/4078
摘要： An optical writing device stores pieces of dithering information indicating dithering patterns whose densities are different, each piece of dithering information including pieces of identification information associated with pixels of the corresponding dithering pattern, and stores pieces of pixel setting information in which pieces of colored/colorless information indicating each of the pixels is colored or colorless are associated with the pieces of identification information, the pieces of colored/colorless information being set based on a resolution of a light source for forming an electrostatic latent image. The optical writing device also includes a control unit configured to arrange the same dithering patterns in a way that the dithering patterns form a pattern with a given size, and cause the light source to emit light based on information generated by setting the pixels of each of the same dithering patterns to be colored or colorless in accordance with the pixel setting information.
摘要翻译：光学写入装置存储指示密度不同的抖动图案的抖动信息，每个抖动信息包括与相应抖动图案的像素相关联的识别信息，并存储其中有色/无色的像素设置信息指示每个像素的信息被着色或无色与识别信息相关联，基于用于形成静电潜像的光源的分辨率设置彩色/无色信息。光写入装置还包括控制单元，其被配置为以抖动图案形成具有给定尺寸的图案的方式布置相同的抖动图案，并且基于通过设置每个图像的像素而产生的信息使光源发光相同的抖动图案根据像素设置信息被着色或无色。

10. 发明授权

US10063744B2 Image reading device, image forming apparatus, and shading data processing method 有权
公开(公告)号：US10063744B2
公开(公告)日：2018-08-28
申请号：US15276892
申请日：2016-09-27
申请人： Susumu Miyazaki , Tomoyuki Yoshida , Tetsuo Inui , Shigefumi Imoto
发明人： Susumu Miyazaki , Tomoyuki Yoshida , Tetsuo Inui , Shigefumi Imoto
IPC分类号： H04N1/60 , G03F3/08 , H04N1/409 , H02N1/12 , H04N1/203 , H04N1/031
CPC分类号： H04N1/4095 , H02N1/12 , H04N1/0313 , H04N1/12 , H04N1/2034 , H04N1/407 , H04N2201/0081
摘要： An image reading device includes a first unit to read one surface of a document in a first area facing a document path, a second unit disposed in the first area to read the other surface of the document, a first reference member facing the first unit at a first distance therefrom at a second position in a second area not facing the path, a second reference member facing the first unit at a second distance therefrom at a first position in the first area, a third reference member facing the second unit at the second distance therefrom, and a correction unit to correct, based on a difference between first data generated through reading of the first member by the first unit and second data generated through reading of the second member by the first unit, third data generated through reading of the third member by the second unit.

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