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1. 发明申请

US20170235258A1 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 审中-公开
公开(公告)号：US20170235258A1
公开(公告)日：2017-08-17
申请号：US15427735
申请日：2017-02-08
申请人： Yuuji WADA , Naoto KOCHI , Hiroki NAKAMATSU , Kazuki YOGOSAWA , Takahiro SUZUKI , Shinya TANAKA , Kenji SUGIURA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Hirokazu ISHII , Takehide MIZUTANI , Atsushi NAGATA , Keigo NAKAMURA
发明人： Yuuji WADA , Naoto KOCHI , Hiroki NAKAMATSU , Kazuki YOGOSAWA , Takahiro SUZUKI , Shinya TANAKA , Kenji SUGIURA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Hirokazu ISHII , Takehide MIZUTANI , Atsushi NAGATA , Keigo NAKAMURA
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G15/1605 , G03G15/5029 , G03G2215/00738
摘要： An improved image forming apparatus includes an image bearer, a nip forming member, a transfer power source, and a controller. The controller switches a transfer mode between a first mode to transfer the toner image onto a first type sheet having a surface smoothness higher than a surface smoothness of a second type sheet and a second mode to transfer the toner image onto the second type sheet. The controller controls the transfer power source to output the transfer bias having an opposite-peak duty of greater than or equal to 50% that is a duty on the side of the opposite-peak value in the first mode. The controller controls the transfer power source to output the transfer bias having an opposite-peak duty of less than 50%, which is different from the opposite-peak duty of the first mode, in the second mode.

2. 发明申请

US20170235257A1 IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD 审中-公开
公开(公告)号：US20170235257A1
公开(公告)日：2017-08-17
申请号：US15432392
申请日：2017-02-14
申请人： Naoto KOCHI , Hirokazu ISHII , Seiichi KOGURE , Naohiro KUMAGAI , Kenji SUGIURA , Shinya TANAKA , Hiroki NAKAMATSU , Yuuji WADA , Junpei FUJITA , Takahiro SUZUKI , Kazuki YOGOSAWA , Atsushi NAGATA
发明人： Naoto KOCHI , Hirokazu ISHII , Seiichi KOGURE , Naohiro KUMAGAI , Kenji SUGIURA , Shinya TANAKA , Hiroki NAKAMATSU , Yuuji WADA , Junpei FUJITA , Takahiro SUZUKI , Kazuki YOGOSAWA , Atsushi NAGATA
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G5/005 , G03G5/147
摘要： An image forming apparatus includes an image bearer to bear a toner image, a nip forming member contacting the image bearer to form a transfer nip, and a transfer power source. The transfer bias has a transfer peak value to electrostatically move toner from the image bearer to the recording sheet and an opposite-peak value to electrostatically move less toner from the image bearer to the recording sheet than the transfer peak value. An opposite-peak duty of the transfer bias is less than 50%. The opposite-peak duty is tr/T×100% where T is one cycle of the transfer bias and tr is a time period during which the transfer bias is on a side of the opposite-peak value relative to an offset voltage of the transfer bias in the one cycle T.

3. 发明申请

US20160334739A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20160334739A1
公开(公告)日：2016-11-17
申请号：US15143806
申请日：2016-05-02
申请人： Tatsuya OHSUGI , Kenji SUGIURA , Hirokazu ISHII , Hiroyoshi HAGA , Yuuji WADA , Takehide MIZUTANI , Naoto KOCHI , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Kazuki YOGOSAWA
发明人： Tatsuya OHSUGI , Kenji SUGIURA , Hirokazu ISHII , Hiroyoshi HAGA , Yuuji WADA , Takehide MIZUTANI , Naoto KOCHI , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Kazuki YOGOSAWA
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G15/1605 , G03G2215/0129
摘要： An image forming apparatus, including an image bearer configured to bear a toner image; a transfer device disposed opposing to the image bearer; and a transfer bias power source. The transfer bias power source is configured to output a transfer bias to transfer the toner image onto a recording medium. The transfer bias is a superimposed bias that cyclically alternates between a transfer-directional bias to transfer the toner image from the image bearer onto the recording medium and an opposite-directional bias in an opposite direction of the transfer direction. A ratio of a time period of application of the opposite-directional bias to a total time period of one cycle of the output transfer bias is greater than 50%. The transfer bias power source changes a value of a direct current voltage in the superimposed bias according to a linear velocity of the image bearer.
摘要翻译：一种图像形成装置，包括构造成承载调色剂图像的图像载体; 与所述图像载体相对设置的传送装置; 和转印偏压电源。转印偏压电源被配置为输出转印偏压以将调色剂图像转印到记录介质上。转印偏压是在将调色剂图像从图像载体转印到记录介质上的转印方向偏置和在转印方向的相反方向上的相反方向的偏压之间循环地交替的叠加偏压。反方向偏压的施加时间与输出转印偏压的一个周期的总时间周期的比率大于50％。转印偏压电源根据图像承载的线速度改变叠加偏压中的直流电压的值。

4. 发明申请

US20160161887A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20160161887A1
公开(公告)日：2016-06-09
申请号：US14956707
申请日：2015-12-02
申请人： Kenji SUGIURA , Toshitaka YAMAGUCHI , Hiroyoshi HAGA , Hirokazu ISHII , Shinya TANAKA , Takehide MIZUTANI , Yuuji WADA , Tatsuya OHSUGI , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Kazuki YOGOSAWA
发明人： Kenji SUGIURA , Toshitaka YAMAGUCHI , Hiroyoshi HAGA , Hirokazu ISHII , Shinya TANAKA , Takehide MIZUTANI , Yuuji WADA , Tatsuya OHSUGI , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Kazuki YOGOSAWA
IPC分类号： G03G15/16
CPC分类号： G03G15/1665 , G03G15/1675 , G03G21/20
摘要： An image forming apparatus includes an image bearer, a toner image forming device, a nip forming device, a power source, a controller, and a temperature-and-humidity detector. The toner image forming device forms a toner image on the image bearer. The nip forming device contacts the image bearer to form a transfer nip. The power source outputs a transfer bias, in which an alternating current component is superimposed on a direct current component, to transfer the toner image onto a recording medium interposed in the transfer nip. The temperature-and-humidity detector detects a temperature and humidity. The controller controls the power source to output the transfer bias including the direct current component with a smaller absolute value as at least one of the detected temperature and humidity increases.
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，夹持形成装置，电源，控制器和温度 - 湿度检测器。调色剂图像形成装置在图像承载体上形成调色剂图像。辊隙形成装置接触图像载体以形成转印辊隙。电源输出转印偏压，其中交流分量叠加在直流分量上，以将调色剂图像转印到介于转印辊隙中的记录介质上。温度和湿度检测器检测温度和湿度。当检测到的温度和湿度中的至少一个增加时，控制器控制电源输出包括具有较小绝对值的直流分量的转印偏压。

5. 发明申请

US20170003630A1 IMAGE FORMING APPARATUS 审中-公开
标题翻译：图像形成装置
公开(公告)号：US20170003630A1
公开(公告)日：2017-01-05
申请号：US15265562
申请日：2016-09-14
申请人： Tatsuya OHSUGI , Kenji SUGIURA , Jyunya SAKURABA , Hirokazu ISHII , Toshitaka YAMAGUCHI , Hiroyoshi HAGA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Yuuji WADA , Kazuki YOGOSAWA , Shinya TANAKA , Masayoshi NAKAYAMA
发明人： Tatsuya OHSUGI , Kenji SUGIURA , Jyunya SAKURABA , Hirokazu ISHII , Toshitaka YAMAGUCHI , Hiroyoshi HAGA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Yuuji WADA , Kazuki YOGOSAWA , Shinya TANAKA , Masayoshi NAKAYAMA
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G15/1605 , G03G15/162 , G03G15/1665 , G03G15/1685
摘要： An image forming apparatus includes an image bearer, a transfer member, and a power source. The image bearer includes a plurality of layers. The transfer member forms a transfer nip between the image bearer and the transfer member. The power source outputs a transfer bias to transfer a toner image from the image bearer onto a recording sheet in the transfer nip. The transfer bias alternates between a transfer-side bias that causes the toner image to move from the image bearer to the recording sheet, and an opposite-side bias different from the transfer-side bias. A duty ratio of a time period, during which the opposite-side bias is output, relative to one cycle of a waveform, is greater than 50%.
摘要翻译：图像形成装置包括图像载体，转印构件和电源。图像载体包括多个层。转印部件在图像承载体和转印部件之间形成转印辊隙。电源输出转印偏压以将调色剂图像从图像载体转印到转印辊隙中的记录纸上。转印偏压在导致调色剂图像从图像载体移动到记录片材的转印侧偏置之间交替，并且与转印侧偏压不同的相反侧偏置交替。相对于波形的一个周期，输出相对侧偏压的时间段的占空比大于50％。

6. 发明申请

US20160274505A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20160274505A1
公开(公告)日：2016-09-22
申请号：US15073983
申请日：2016-03-18
申请人： Tatsuya OHSUGI , Kenji SUGIURA , Hirokazu ISHll , Hiroyoshi HAGA , Naohiro KUMAGAI , Seiichi KOGURE , Takehide MIZUTANI , Junpei FUJITA , Yuuji WADA , Kazuki YOGOSAWA , Naoto KOCHI
发明人： Tatsuya OHSUGI , Kenji SUGIURA , Hirokazu ISHll , Hiroyoshi HAGA , Naohiro KUMAGAI , Seiichi KOGURE , Takehide MIZUTANI , Junpei FUJITA , Yuuji WADA , Kazuki YOGOSAWA , Naoto KOCHI
IPC分类号： G03G15/16
CPC分类号： G03G15/1665 , G03G15/1605 , G03G15/1675 , G03G2215/0129 , G03G2215/1623
摘要： An image forming apparatus includes a plurality of image bearers, a transfer bias member, and a power source. When the transfer bias member transfers a color toner image onto a recording sheet, a second peak value of a peak-to-peak of a transfer bias, which is smaller than a first peak value of the peak-to-peak in an electrostatic force to move toner from the image bearers or an intermediate transfer body to the recording sheet, is zero or has a first polarity to generate the electrostatic force in a transfer direction to move toner from the image bearers or the intermediate transfer body to the recording sheet. When the transfer bias member transfers a monochromatic toner image including only black toner onto the recording sheet, the second peak value is zero or has a second polarity to generate an electrostatic force in an opposite direction to the transfer direction.
摘要翻译：图像形成装置包括多个图像载体，转印偏压构件和电源。当转印偏压构件将彩色调色剂图像转印到记录纸上时，转印偏压的峰 - 峰的第二峰值小于静电力中的峰 - 峰的第一峰值将图像载体或中间转印体的调色剂移动到记录片材，为零或具有第一极性，以在传送方向上产生静电力，以将调色剂从图像承载件或中间转印体移动到记录片材。当转印偏压构件将仅包括黑色调色剂的单色调色剂图像转印到记录片材上时，第二峰值为零或具有第二极性，以在与传送方向相反的方向产生静电力。

7. 发明申请

US20160274503A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20160274503A1
公开(公告)日：2016-09-22
申请号：US15065600
申请日：2016-03-09
申请人： Kenji SUGIURA , Hiroyoshi HAGA , Hirokazu ISHll , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Takehide MIZUTANI , Yuuji WADA , Naoto KOCHI , Tatsuya OHSUGI , Kazuki YOGOSAWA
发明人： Kenji SUGIURA , Hiroyoshi HAGA , Hirokazu ISHll , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Takehide MIZUTANI , Yuuji WADA , Naoto KOCHI , Tatsuya OHSUGI , Kazuki YOGOSAWA
IPC分类号： G03G15/16
CPC分类号： G03G15/162 , G03G15/1605 , G03G15/1675
摘要： An image forming apparatus includes an image bearer; a toner image forming device; an intermediate transferor; a primary transfer power source; a secondary transfer nip forming device; and a secondary transfer power source to output a secondary transfer bias. One of two peak values of the secondary transfer bias is a transfer peak value to provide a greater transfer-directional force to move toner from the intermediate transferor toward the recording medium in the secondary transfer nip. An absolute value of the transfer peak value is greater than an absolute value of the primary transfer bias.
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; 中间转让人一次传输电源; 二次转印压区成形装置; 和二次转印电源，以输出二次转印偏压。二次转印偏压的两个峰值值之一是转印峰值，以提供更大的转印方向力，以将调色剂从中间转印器向二次转印辊隙中的记录介质移动。转印峰值的绝对值大于一次转印偏压的绝对值。

8. 发明申请

US20150037054A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20150037054A1
公开(公告)日：2015-02-05
申请号：US14449270
申请日：2014-08-01
申请人： Atsushi NAGATA , Kenji SUGIURA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Yuuji WADA , Yusuke MITANI , Kazuki YOGOSAWA
发明人： Atsushi NAGATA , Kenji SUGIURA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Yuuji WADA , Yusuke MITANI , Kazuki YOGOSAWA
IPC分类号： G03G15/16
CPC分类号： G03G15/1665 , G03G15/5058
摘要： An image forming apparatus includes an image bearer; a toner image forming unit, a transfer unit, a detector, and a controller. The toner image forming unit forms a plurality of types of density detection patterns on the surface of the image bearer in mutually-different positions in a surface-movement direction of the image bearer. The density detection patterns have mutually-different lengths in a direction orthogonal to the surface-movement direction of the image bearer. The transfer unit transfers the density detection patterns onto the surface of the transfer member. The detector detects image densities of the density detection patterns transferred on the surface of the transfer member. The controller calculates an image density difference between the density detection patterns on a basis of a detection result obtained by the detector, and corrects a transfer bias for transferring a toner image on a basis of a value of the image density difference.
摘要翻译：图像形成装置包括图像载体; 调色剂图像形成单元，转印单元，检测器和控制器。调色剂图像形成单元在图像承载体的表面移动方向上的相互不同的位置的图像载体的表面上形成多种类型的浓度检测图案。密度检测图案在与图像载体的表面移动方向正交的方向上具有相互不同的长度。转印单元将浓度检测图案转印到转印部件的表面上。检测器检测在转印部件的表面上转印的浓度检测图案的图像浓度。控制器基于由检测器获得的检测结果来计算浓度检测图案之间的图像浓度差，并且基于图像浓度差的值来校正用于转印调色剂图像的转印偏压。

9. 发明申请

US20160109832A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20160109832A1
公开(公告)日：2016-04-21
申请号：US14881611
申请日：2015-10-13
申请人： Tatsuya OHSUGI , Kenji SUGIURA , Jyunya SAKURABA , Hirokazu ISHll , Toshitaka YAMAGUCHI , Hiroyoshi HAGA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Yuuji WADA , Kazuki YOGOSAWA , Shinya TANAKA , Masayoshi NAKAYAMA
发明人： Tatsuya OHSUGI , Kenji SUGIURA , Jyunya SAKURABA , Hirokazu ISHll , Toshitaka YAMAGUCHI , Hiroyoshi HAGA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Yuuji WADA , Kazuki YOGOSAWA , Shinya TANAKA , Masayoshi NAKAYAMA
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G15/1605 , G03G15/162 , G03G15/1665 , G03G15/1685
摘要： An image forming apparatus includes an image bearer, a transfer member, and a power source. The image bearer includes a plurality of layers. The transfer member forms a transfer nip between the image bearer and the transfer member. The power source outputs a transfer bias to transfer a toner image from the image bearer onto a recording sheet in the transfer nip. The transfer bias alternates between a transfer-side bias that causes the toner image to move from the image bearer to the recording sheet, and an opposite-side bias different from the transfer-side bias. A duty ratio of a time period, during which the opposite-side bias is output, relative to one cycle of a waveform, is greater than 50%.
摘要翻译：图像形成装置包括图像载体，转印构件和电源。图像载体包括多个层。转印部件在图像承载体和转印部件之间形成转印辊隙。电源输出转印偏压以将调色剂图像从图像载体转印到转印辊隙中的记录纸上。转印偏压在导致调色剂图像从图像载体移动到记录片材的转印侧偏置之间交替，并且与转印侧偏压不同的相反侧偏置交替。相对于波形的一个周期，输出相对侧偏压的时间段的占空比大于50％。

10. 发明申请

US20160161888A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20160161888A1
公开(公告)日：2016-06-09
申请号：US14962062
申请日：2015-12-08
申请人： Yuuji WADA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Kazuki YOGOSAWA , Kenji SUGIURA , Takehide MIZUTANI , Tatsuya OHSUGI , Hiroyoshi HAGA , Hirokazu ISHll
发明人： Yuuji WADA , Naohiro KUMAGAI , Seiichi KOGURE , Junpei FUJITA , Kazuki YOGOSAWA , Kenji SUGIURA , Takehide MIZUTANI , Tatsuya OHSUGI , Hiroyoshi HAGA , Hirokazu ISHll
IPC分类号： G03G15/16
CPC分类号： G03G21/0005 , G03G15/1665 , G03G15/1675
摘要： An image forming apparatus includes a belt-shaped image bearer; a transfer device disposed opposing to the image bearer; an opposed device disposed opposing to the transfer device; and a transfer bias power source. The image bearer is disposed along an outer circumferential surface of the transfer device at at least one of an upstream side and a downstream side of the transfer portion in a direction of conveyance of the recording medium. The transfer bias power source cyclically alternates the transfer bias applied to the transfer portion, between a transfer directional bias in a transfer direction to transfer the toner image from the image bearer onto the recording medium and a reverse directional bias in a reverse direction of the transfer direction. The transfer bias power source applies the reverse directional bias during a time period longer than 50% of one cycle of the applied transfer bias in the one cycle.
摘要翻译：图像形成装置包括带状图像载体; 与所述图像载体相对设置的传送装置; 与传送装置相对设置的相对设备; 和转印偏压电源。图像承载体在转印部分的上游侧和下游侧中的至少一个沿着记录介质的输送方向沿着转印装置的外周表面设置。转印偏压电源周期性地交替施加到转印部分的转印偏压之间，在转印方向上的转印方向偏压之间，以将调色剂图像从图像载体转印到记录介质上，并且转印反转方向上的反向偏置方向。转移偏置电源在一个周期内的施加的转移偏压的一个周期的50％的时间段内施加反向偏置。

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