公开(公告)号：US20180136593A1

公开(公告)日：2018-05-17

申请号：US15713838

申请日：2017-09-25

申请人： Satoshi KANEKO ,  Shuji HIRAI ,  Yuuichiroh UEMATSU ,  Terumichi OCHI

发明人： Satoshi KANEKO ,  Shuji HIRAI ,  Yuuichiroh UEMATSU ,  Terumichi OCHI

IPC分类号： G03G15/16 ,  G03G15/00 ,  G03G21/16

CPC分类号： G03G15/1615 ,  G03G13/14 ,  G03G15/011 ,  G03G15/065 ,  G03G15/5008 ,  G03G15/5025 ,  G03G15/5041 ,  G03G15/5058 ,  G03G21/1647 ,  G03G21/1676 ,  G03G21/203 ,  G03G2215/00042 ,  G03G2221/1657

摘要： An image forming apparatus includes an image forming unit and a controller. The image forming unit includes a latent image bearer, a charger to charge the latent image bearer, an exposure device to expose a latent image on the surface of the latent image bearer, and a developing device to develop the latent image with a developer. The controller executes an image forming process, a first fluctuation control that cyclically changes a developing bias supplied to the developing device based on predetermined first pattern data, and a second fluctuation control that cyclically changes a charging bias supplied to the charger based on predetermined second pattern data, in parallel. The controller executes a determination process to determine whether the controller executes the first fluctuation control. When the controller determines not to execute the first fluctuation control, the controller determines not to execute the second fluctuation control, too.

公开(公告)号：US20170269527A1

公开(公告)日：2017-09-21

申请号：US15447696

申请日：2017-03-02

申请人： Satoshi KANEKO ,  Terumichi OCHI ,  Shuji HIRAI

发明人： Satoshi KANEKO ,  Terumichi OCHI ,  Shuji HIRAI

IPC分类号： G03G15/00

CPC分类号： G03G15/5025 ,  G03G15/1605 ,  G03G15/5058 ,  G03G2215/0129 ,  G03G2215/0164

摘要： An image forming apparatus includes an image forming device, an image density detector, and an output change device configured to cause the image forming device to form a test toner image while cyclically changing a charging power based on a charging change pattern and a developing bias based on a developing change pattern, generate an image density fluctuation pattern of the test toner image in a rotation direction of the latent image bearer, generate a writing change pattern to cyclically change a power of latent image writing based on the image density fluctuation pattern of the test toner image and one of the charging change pattern and a correlative pattern correlated with the charging change pattern. The output change device is configured to cyclically change the power of latent image writing based on the writing change pattern during image formation according to a user command.

公开(公告)号：US20150261162A1

公开(公告)日：2015-09-17

申请号：US14619387

申请日：2015-02-11

申请人： Satoshi KANEKO ,  Shinji KATO ,  Shuji HIRAI ,  Hideo MUROI ,  Terumichi OCHI

发明人： Satoshi KANEKO ,  Shinji KATO ,  Shuji HIRAI ,  Hideo MUROI ,  Terumichi OCHI

IPC分类号： G03G15/00

CPC分类号： G03G15/5041 ,  G03G15/043 ,  G03G15/065

摘要： An image forming apparatus includes a latent image bearer, a toner image forming unit, and a transfer device. The toner image forming unit includes a charger, a latent image forming device, and a developing device, and is configured to form a test latent image pattern on a surface of the latent image bearer, and to develop the test latent image pattern into a test toner pattern. The test latent image pattern includes a plurality of test latent image parts partly offset from one another in a main scanning direction. The image forming apparatus also includes a developing current detector and a processor to detect uneven image density in the main scanning direction using the test latent image pattern, based on the developing current detected by the developing current detector, to adjust the uneven image density in the main scanning direction.

摘要翻译： 图像形成装置包括潜像载体，调色剂图像形成单元和转印装置。 调色剂图像形成单元包括充电器，潜像形成装置和显影装置，并且被配置为在潜像承载体的表面上形成测试潜像图案，并将测试潜像图案显影成测试 墨粉图案。 测试潜像图案包括在主扫描方向上彼此部分偏移的多个测试潜像部分。 图像形成装置还包括显影电流检测器和处理器，用于基于由显影电流检测器检测到的显影电流，使用测试潜像图案来检测主扫描方向上的不均匀图像浓度，以调整不均匀图像浓度 主扫描方向。

公开(公告)号：US20130243456A1

公开(公告)日：2013-09-19

申请号：US13753859

申请日：2013-01-30

申请人： Satoshi KANEKO ,  Jun YAMANE ,  Koichi KUDO ,  Shinji KATO ,  Hitoshi ISHIBASHI ,  Shuji HIRAI ,  Shingo SUZUKI

发明人： Satoshi KANEKO ,  Jun YAMANE ,  Koichi KUDO ,  Shinji KATO ,  Hitoshi ISHIBASHI ,  Shuji HIRAI ,  Shingo SUZUKI

IPC分类号： G03G15/00

CPC分类号： G03G13/22 ,  G03G15/5037 ,  G03G15/5041

摘要： An image forming apparatus includes a rotatable image carrier that carries a toner image having a length corresponding to at least a circumferential length of the carrier; an image density detector that detects a density of the image; a potential detector that detects, over at least the circumferential length, a surface potential of the carrier before toner adheres thereto; a first image forming device that adjusts the density with a first factor, and forms an image based on a first condition of the first factor; a second image forming device that adjusts the density with a second factor, and forms an image based on a second condition of the second factor; a first determining device that determines the first condition based on uneven density; and a second determining device that determines the second condition based on uneven density and a potential distribution of the surface potential.

摘要翻译： 图像形成装置包括可转动的图像载体，其承载具有对应于载体的至少周长的长度的调色剂图像; 图像浓度检测器，其检测图像的浓度; 在调色剂附着于其之前，至少在圆周长度上检测载体的表面电位的电位检测器; 第一图像形成装置，其以第一因子调整所述浓度，并且基于所述第一因子的第一条件形成图像; 第二图像形成装置，其利用第二因子调整所述浓度，并且基于所述第二因子的第二条件形成图像; 第一确定装置，其基于不均匀密度来确定第一条件; 以及第二确定装置，其基于不均匀密度和表面电位的电位分布来确定第二条件。

公开(公告)号：US20160334734A1

公开(公告)日：2016-11-17

申请号：US15221003

申请日：2016-07-27

申请人： Satoshi KANEKO ,  Shinji KATO ,  Shuji HIRAI

发明人： Satoshi KANEKO ,  Shinji KATO ,  Shuji HIRAI

IPC分类号： G03G15/08

CPC分类号： G03G15/0849 ,  G03G15/065 ,  G03G15/5041 ,  G03G15/5054

摘要： A toner adhesion amount information detection unit detects toner adhesion amount information. An image density unevenness detection unit detects image density unevenness in an image. A toner image forming unit forms a latent image on the surface of the latent image bearer, and performs the developing processing by applying developing bias between the latent image bearer and a developer bearer. The toner adhesion amount information detection unit detects, as the toner adhesion amount information, developing current flowing between the developer bearer and the latent image bearer. The image density unevenness detection unit obtains, from the image information, an index value indicating a toner adhesion amount of a toner image portion when the developing current is detected, and detects the image density unevenness based on the image information and the developing current when the index value indicates a toner adhesion amount of a prescribed amount or more.

摘要翻译： 调色剂附着量信息检测单元检测调色剂附着量信息。 图像浓度不均匀性检测单元检测图像中的图像浓度不均匀。 调色剂图像形成单元在潜像载体的表面上形成潜像，并且通过在潜像载体和显影剂载体之间施加显影偏压来进行显影处理。 调色剂附着量信息检测单元检测作为调色剂附着量信息，显影剂载体和潜像载体之间流动的显影电流。 图像浓度不均匀性检测单元从图像信息获得指示当检测到显影电流时调色剂图像部分的调色剂附着量的指标值，并且当基于图像信息和显影电流检测图像浓度不均匀时 指标值表示调色剂附着量在规定量以上。

公开(公告)号：US20160223934A1

公开(公告)日：2016-08-04

申请号：US15009990

申请日：2016-01-29

申请人： Naoto WATANABE ,  Shuji HIRAI ,  Satoshi KANEKO ,  Terumichi OCHI ,  Muneaki IWATA

发明人： Naoto WATANABE ,  Shuji HIRAI ,  Satoshi KANEKO ,  Terumichi OCHI ,  Muneaki IWATA

IPC分类号： B41J2/385

CPC分类号： G03G15/043 ,  H04N1/0283 ,  H04N1/04 ,  H04N1/06 ,  H04N1/113 ,  H04N2201/04755

摘要： An image forming apparatus includes: a latent image forming unit that forms a latent image on a latent image bearer with light from a light source; and a correction data generating unit that includes: an acquiring unit that acquires, for each position, a correction value of an intensity of the light source to equalize a density distribution of a latent image; a quantizing unit that generates a correction data for each position by quantizing a correction value for each position; and an excessive correction suppressing unit that outputs the correction data after reducing an amount of change from an immediately preceding latent image formation position, with respect to a position at which an absolute value of a restored value indicating a correction amount and generated based on the correction data exceeds an absolute value of the correction value.

摘要翻译： 图像形成装置包括：潜像形成单元，其利用来自光源的光在潜像载体上形成潜像; 以及校正数据生成单元，包括：获取单元，对于每个位置，获取所述光源的强度的校正值以均衡潜像的浓度分布; 量化单元，其通过量化每个位置的校正值来生成每个位置的校正数据; 以及过度校正抑制单元，在相对于表示校正量的恢复值的绝对值并基于校正而产生的恢复值的绝对值的位置之后，输出修正数据，该校正数据在减少从紧接在前的潜像形成位置开始的变化量之后， 数据超过校正值的绝对值。

公开(公告)号：US20140270828A1

公开(公告)日：2014-09-18

申请号：US14203798

申请日：2014-03-11

申请人： Shingo SUZUKI ,  Satoshi KANEKO ,  Tetsuya MUTO ,  Shuji HIRAI ,  Shinichi AKATSU ,  Keita GOTOH ,  Yuuichiroh UEMATSU

发明人： Shingo SUZUKI ,  Satoshi KANEKO ,  Tetsuya MUTO ,  Shuji HIRAI ,  Shinichi AKATSU ,  Keita GOTOH ,  Yuuichiroh UEMATSU

IPC分类号： G03G15/06

CPC分类号： G03G15/065 ,  G03G15/5058 ,  G03G2215/0129 ,  G03G2215/0164

摘要： An image forming apparatus includes a latent-image bearing body, a charging unit, a latent-image writing unit, a development unit, a development power, and a bias control unit. After a start of an image forming operation, the bias control unit performs a process of constantly maintaining an output of a development bias at an adjustment bias value. The adjustment bias value is a central value in a periodic fluctuation range of the output of the development bias. At a timing at which a difference of the development bias from the adjustment bias value in the periodic fluctuation range is less than or equal to a predetermined threshold value, the bias control unit performs switching from the process of constantly maintaining the output of the development bias at the adjustment bias value to a process of periodically changing the output of the development bias based on development bias control data.

摘要翻译： 图像形成装置包括潜像承载体，充电单元，潜像写入单元，显影单元，显影电力和偏置控制单元。 在图像形成操作开始之后，偏置控制单元执行持续将显影偏压的输出保持在调整偏置值的处理。 调整偏差值是显影偏压输出的周期性波动范围内的中心值。 在显影偏差与周期性波动范围内的调整偏置值的差小于或等于预定阈值的定时，偏置控制单元从持续保持显影偏压的输出的处理进行切换 将调整偏差值设定为基于显影偏压控制数据周期性地改变显影偏压的输出的过程。

公开(公告)号：US20110229171A1

公开(公告)日：2011-09-22

申请号：US13051420

申请日：2011-03-18

申请人： Shuji HIRAI

发明人： Shuji HIRAI

IPC分类号： G03G15/00

CPC分类号： G03G15/5058 ,  G03G15/0131 ,  G03G15/0194 ,  G03G2215/00059 ,  G03G2215/00063

摘要： An image forming apparatus includes plural toner adhered amount detectors that detect an amount of toner particles adhered to the toner image on the image bearer and an image density controller to form a gradation pattern by sequentially arranging plural toner patches in the sub-scanning direction on the image bearer from the least toner adhered amount patch. These toner patches bear a different amount of toner particles from each other. The plural toner patches are detected by the plural toner adhered amount detectors, and the image density controller adjusts an image formation condition for the image formation device based on detection values thereof. These toner adhered amount detectors are symmetrically aligned in a main scanning direction above the image bearer. The image density controller forms the plural toner patches being staggered at different positions on the image bearer, facing these toner adhered amount detectors, respectively.

摘要翻译： 图像形成装置包括多个调色剂粘附量检测器，其检测粘附到图像承载体上的调色剂图像的调色剂颗粒的量;以及图像浓度控制器，通过在副扫描方向上依次排列多个调色剂片而形成渐变图案 来自最少调色剂附着量补片的图像承载体。 这些调色剂贴片彼此具有不同量的调色剂颗粒。 通过多个调色剂附着量检测器检测多个调色剂片，并且图像浓度控制器基于其检测值来调整图像形成装置的图像形成条件。 这些调色剂粘附量检测器在图像载体上方的主扫描方向上对称地对准。 图像浓度控制器在图像承载体上的不同位置分别形成多个调色剂贴片，面向这些调色剂附着量检测器。

公开(公告)号：US20110058823A1

公开(公告)日：2011-03-10

申请号：US12876707

申请日：2010-09-07

申请人： Shuji HIRAI

发明人： Shuji HIRAI

IPC分类号： G03G15/00

CPC分类号： G03G15/0131 ,  G03G15/5058 ,  G03G2215/00059 ,  G03G2215/0129

摘要： A toner-image detecting sensor for detecting a toner image before being transferred onto a recording sheet and a fixed-image detecting sensor for detecting the toner image after being secondarily transferred and fixed on the recording sheet are arranged so that the positions of them in a main scanning corresponding direction are aligned. An image forming apparatus has a first image adjustment mode and a second image adjustment mode. In the first image adjustment mode, image adjustment is made on the basis of only a result of detection by the toner-image detecting sensor without transferring the test pattern onto the recording sheet. In the second image adjustment mode, the test pattern is transferred onto the recording sheet, and image adjustment is made on the basis of both a result of detection by the toner-image detecting sensor and a result of detection by the fixed-image detecting sensor.

摘要翻译： 一种调色剂图像检测传感器，用于在转印到记录纸上之前检测调色剂图像，以及用于在二次转印并固定在记录纸上之后检测调色剂图像的固定图像检测传感器被布置成使它们位于 主扫描对应方向对齐。 图像形成装置具有第一图像调整模式和第二图像调整模式。 在第一图像调整模式中，仅基于调色剂图像检测传感器的检测结果进行图像调整，而不将测试图案转印到记录片材上。 在第二图像调整模式中，将测试图案转印到记录纸上，并且基于调色剂图像检测传感器的检测结果和固定图像检测传感器的检测结果进行图像调整 。

公开(公告)号：US20150362879A1

公开(公告)日：2015-12-17

申请号：US14726847

申请日：2015-06-01

申请人： Satoshi KANEKO ,  Shinji KATO ,  Shuji HIRAI

发明人： Satoshi KANEKO ,  Shinji KATO ,  Shuji HIRAI

IPC分类号： G03G15/00

CPC分类号： G03G15/556 ,  G03G15/5058 ,  G03G21/145 ,  G03G2215/0161

摘要： An image forming apparatus includes an image bearer; a toner image forming device; a transfer rotator; a transfer device; a rotation position detector; an image density detector; a density data acquisition unit to causes the toner image forming device to form an adjustment toner image equal to or greater in length than a circumferential length of the image bearer, cause a linear velocity difference between the image bearer and the transfer rotator in transfer of the adjustment toner image, and acquires, from a detected image density of the toner image transferred from the image bearer, detected by the image density detector, image density unevenness data with reference to detection of a reference rotation position of one of the image bearer and a rotator; and a correction unit to adjust an image forming condition according to the reference rotation position, the image density unevenness data, and the linear velocity difference.

摘要翻译： 图像形成装置包括图像载体; 调色剂图像形成装置; 转移旋转器; 转移装置; 旋转位置检测器; 图像浓度检测器; 密度数据获取单元，用于使调色剂图像形成装置形成等于或大于图像载体的周长的调色剂图像，导致图像载体和转印旋转体之间的线速度差异， 调整调色剂图像，并且从图像载体检测到的图像承载检测到的调色剂图像的检测图像浓度中获取图像浓度不均匀性数据，参照图像载体和图像载体之一的基准旋转位置的检测 旋转器 以及校正单元，用于根据基准旋转位置，图像浓度不均匀性数据和线速度差来调整图像形成条件。