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公开(公告)号：US20150338809A1
公开(公告)日：2015-11-26
申请号：US14711573
申请日：2015-05-13
发明人： Naoka Omura , Kuniyasu Kimura , Takuya Hayakawa , Kiyoharu Kakomura , Seita Inoue , Yuya Ohta
IPC分类号： G03G15/01
CPC分类号： G03G15/5058 , G03G15/0131 , G03G15/043 , G03G2215/0129 , G03G2215/0161 , G03G2215/0164
摘要： The image forming apparatus controls each laser scanner by setting the writing start timing in the sub-scanning direction to form the color registration correction image for correcting color registration at position according to the detection result of the image detection sensor. When forming the image on the sheet, the image forming apparatus sets the writing start timing in the sub-scanning direction according to the detection result of the image detection sensor and the amount of skew of the sheet to control each laser scanner. When forming the density detection toner image for correcting the density, the image forming apparatus sets the writing start timing in the sub-scanning direction to form the image at a position shifted by a pixel unit from the image forming position on the sheet.
摘要翻译： 图像形成装置通过在副扫描方向上设定写入开始定时来控制每个激光扫描器，以根据图像检测传感器的检测结果形成用于校正位置上的颜色配准的颜色对准校正图像。 当在片材上形成图像时，图像形成装置根据图像检测传感器的检测结果和片材的歪斜量来设置副扫描方向上的写入开始定时，以控制每个激光扫描器。 当形成用于校正浓度的浓度检测调色剂图像时，图像形成装置将副扫描方向上的写入开始定时设置为在从片材上的图像形成位置偏移像素单元的位置处形成图像。
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公开(公告)号：US20180246436A1
公开(公告)日：2018-08-30
申请号：US15904188
申请日：2018-02-23
发明人： Naoka Omura
CPC分类号： G03G15/0131 , G03G15/0184 , G03G15/0189 , G03G15/5054 , G03G15/5058 , G03G15/5062 , G03G2215/00059 , G03G2215/0161 , G06F3/1278
摘要： An image forming apparatus includes a plurality of image forming units configured to form images, an image bearing member, a detection unit configured to detect a pattern image formed on the image bearing member, the pattern image being used for detecting a color misregistration, a controller configured to control the plurality of image forming units to form a plurality of first pattern images, each having a different color, and control the detection unit to detect the color misregistration, and a storage unit configured to store data on the color misregistration, wherein the controller corrects an image forming position based on the stored data, and wherein in a case where an error is detected in the data, the controller controls the plurality of image forming units to form a plurality of second pattern images, different form the plurality of first pattern images, before the plurality of first pattern images is formed.
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公开(公告)号：US10044894B2
公开(公告)日：2018-08-07
申请号：US15488607
申请日：2017-04-17
发明人： Naoka Omura , Satoru Yamamoto , Toshiyuki Miyake , Katsuya Nakama , Koji Yumoto
摘要： An image forming apparatus which performs an adjustment operation at appropriate timing. Whether to execute a first or a second adjustment processes is controlled based on the number of sheets on which images are formed. A first adjustment operation is executed in a case where the number of sheets has reached a first number since a previous first adjustment process was executed. A second adjustment operation is executed in a case where the number of sheets has reached a second number since a previous second adjustment process was executed. The first adjustment operation is executed in a case where the number of sheets has reached the first number prior to a designated time by a predetermined period. The second adjustment operation is skipped in a case where the number of sheets has reached the second number prior to the designated time by the predetermined period.
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公开(公告)号：US20180017919A1
公开(公告)日：2018-01-18
申请号：US15642693
申请日：2017-07-06
发明人： Yasuhito Shirafuji , Naoka Omura , Ryuichi Araki
CPC分类号： G03G15/5054 , G03G15/0189 , G03G2215/0158
摘要： Provided is an image forming apparatus, which is capable of detecting a color misregistration amount with high accuracy even when a density characteristic thereof is changed. The image forming apparatus includes a plurality of image forming units configured to form toner images of different colors on a predetermined intermediate transfer belt, and a density sensor configured to measure densities of the toner images formed on the intermediate transfer belt. The image forming apparatus determines a density target depending on a measurement result of a density correction image, which is formed by the plurality of image forming units, from the density sensor. The image forming apparatus causes the plurality of image forming units to form position detection images so that the position detection images have densities corresponding to the density target.
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公开(公告)号：US20200371464A1
公开(公告)日：2020-11-26
申请号：US16874965
申请日：2020-05-15
发明人： Seita Inoue , Takuya Hayakawa , Kiyoharu Kakomura , Naoka Omura , Yuya Ohta , Shunsuke Nishimura , Yuichi Yamamoto , Satoru Kojima
摘要： An information processing apparatus that is capable of improving estimating accuracy of a usable period of a fixing device. The information processing apparatus enables communication with an image forming apparatus to which one of fixing devices is selectively attachable. A controller obtains information about a type of a fixing device attached, determines a remaining period of a second fixing device based on second data about a consumption amount of the second fixing device in a case where a first fixing device of a first type is replaced with the second fixing device of a second type, and determines a remaining period of a third fixing device based on first data about a consumption amount of the first fixing device and third data about a consumption amount of the third fixing device in a case where the first fixing device is replaced with the third fixing device of the first type.
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公开(公告)号：US10527998B2
公开(公告)日：2020-01-07
申请号：US15625105
申请日：2017-06-16
发明人： Noriaki Matsui , Nozomi Kumakura , Naoka Omura , Junichiro Nakabayashi , Takayuki Inoue , Kiyoharu Kakomura , Yuya Ohta
IPC分类号： G03G15/00
摘要： An image forming apparatus is capable of easily performing jam processing. When an occurrence of a jam of a sheet which is conveyed on a conveying path is detected, the image forming apparatus displays a jam processing display screen which guides processing in accordance with a position where the jam has occurred. After the processing in accordance with the jam processing display screen is performed, if a state of the jam remains unchanged, the image forming apparatus performs forced feeding, which forcibly conveys the sheet to a predetermined position. The image forming apparatus displays the jam processing display screen urging to perform processing in accordance with the position of the sheet after the sheet is forcibly conveyed.
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公开(公告)号：US10095171B2
公开(公告)日：2018-10-09
申请号：US15642693
申请日：2017-07-06
发明人： Yasuhito Shirafuji , Naoka Omura , Ryuichi Araki
摘要： Provided is an image forming apparatus, which is capable of detecting a color misregistration amount with high accuracy even when a density characteristic thereof is changed. The image forming apparatus includes a plurality of image forming units configured to form toner images of different colors on a predetermined intermediate transfer belt, and a density sensor configured to measure densities of the toner images formed on the intermediate transfer belt. The image forming apparatus determines a density target depending on a measurement result of a density correction image, which is formed by the plurality of image forming units, from the density sensor. The image forming apparatus causes the plurality of image forming units to form position detection images so that the position detection images have densities corresponding to the density target.
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公开(公告)号：US20180143559A1
公开(公告)日：2018-05-24
申请号：US15801033
申请日：2017-11-01
发明人： Naoka Omura , Koichi Taniguchi , Daisuke Aruga
IPC分类号： B41J2/385
CPC分类号： G03G15/0189 , G03G15/04072 , G03G15/0409 , G03G15/1615 , G03G15/5045 , G03G15/5058 , G03G21/20 , G03G2215/0158 , G06K15/1878
摘要： An image forming apparatus including a controller, which starts rotation of a rotary polygon mirror when a predetermined condition is satisfied, rotates the rotary polygon mirror at a predetermined rotation speed based on a first pulse in a first state in which light beams are not emitted from a light source, thereafter starts emission of the light beams, switches a rotation control based on the first pulse to a rotation control based on the second pulse, and rotates the rotary polygon mirror at the predetermined rotation speed based on the second pulse in a second state in which the light beams are emitted from the light source, and thereafter detects a temperature of a drive circuit board by a temperature detector, and corrects color misregistration using a detected temperature of the temperature detector and the detection result of a pattern detector.
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公开(公告)号：US20180017923A1
公开(公告)日：2018-01-18
申请号：US15643604
申请日：2017-07-07
发明人： Yuya Ohta , Noriaki Matsui , Nozomi Kumakura , Naoka Omura , Junichiro Nakabayashi , Takayuki Inoue , Kiyoharu Kakomura
IPC分类号： G03G15/00
CPC分类号： G03G15/556 , G03G15/5041
摘要： A controller of an image forming apparatus calculates a density difference between a measurement result of a toner image having the highest density formed on a photosensitive drum, which is obtained by an image density sensor, and the highest density of a density target. When the density difference falls within a predetermined range, the controller generates a tone correction table based on a density value of a first toner image formed with a plurality of densities including the highest density, and sets, based on the density difference, an exposure amount of laser light to be applied to the photosensitive drum by an exposure device. When the density difference falls out of the predetermined range, the controller generates the tone correction table based on a density value of a second toner image having a larger number of tone levels than that of the first toner image.
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10.发明授权Image forming apparatus with multiple medium-dependent measurements for relative emission timings 有权具有相对发射定时的多个介质相关测量的图像形成装置公开(公告)号：US09310711B2
公开(公告)日：2016-04-12
申请号：US14670694
申请日：2015-03-27
发明人： Yuya Ohta , Kuniyasu Kimura , Takuya Hayakawa , Kiyoharu Kakomura , Seita Inoue , Naoka Omura
IPC分类号： B41J2/435 , B41J2/385 , G03G15/043 , G03G15/04
CPC分类号： G03G15/043 , G03G15/04072 , G03G2215/00599
摘要： An image forming apparatus determines a time length of a non-image-forming period in which image formation is not performed, the non-image-forming period being from when image formation on one recording sheet ends to when image formation on the next recording sheet starts, and based on the determined time length, decides the number of times of executing measurement (BD interval measurement) of a generation timing difference between detection signals corresponding to light beams emitted from two light emitting elements. The image forming apparatus executes the decided number of times of BD interval measurement and calculates an average value of the resultant measurement values.
摘要翻译： 图像形成装置确定不进行图像形成的非图像形成期间的时间长度，非图像形成期间是从一个记录片材上的图像形成结束到下一个记录纸张上的图像形成时 开始，并且基于所确定的时间长度，确定与从两个发光元件发射的光束相对应的检测信号之间的生成定时差的执行次数（BD间隔测量）的次数。 图像形成装置执行决定的BD间隔测量次数，并计算所得到的测量值的平均值。
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