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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

US20170300000A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20170300000A1
公开(公告)日：2017-10-19
申请号：US15483548
申请日：2017-04-10
申请人： Keigo NAKAMURA , Hirokazu ISHll , Kenji SUGIURA. , Takehide MIZUTANI , Atsushi NAGATA , Naoto KOCHI , Yuuji WADA , Shinya TANAKA
发明人： Keigo NAKAMURA , Hirokazu ISHll , Kenji SUGIURA. , Takehide MIZUTANI , Atsushi NAGATA , Naoto KOCHI , Yuuji WADA , Shinya TANAKA
IPC分类号： G03G15/00 , G03G21/20 , G03G15/16
CPC分类号： G03G15/80 , G03G15/1675 , G03G21/203
摘要： An image forming apparatus including an image bearer, a transfer-bias power source, an environment sensor, and a controller. The controller controls the transfer-bias power source to change the DC component and the AC component, according to the at least one of temperature and humidity detected by the environment sensor and a duty of the transfer bias. The duty is A/(A+B)×100[%] where A denotes an area on a return-directional side to move toner from the recording sheet back to the image bearer, relative to a center value (Voff) of a maximum value and a minimum value of the transfer bias in one cycle of a waveform of the transfer bias, and B denotes an area on a transfer-directional side to move the toner from the image bearer to the recording sheet, relative to the center value (Voff) in the one cycle.

3. 发明申请

US20170185007A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20170185007A1
公开(公告)日：2017-06-29
申请号：US15383369
申请日：2016-12-19
申请人： Naoto KOCHI , Shinya TANAKA , Takehide MIZUTANI
发明人： Naoto KOCHI , Shinya TANAKA , Takehide MIZUTANI
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G15/161 , G03G2215/0129
摘要： An image forming apparatus includes a transfer power supply and a controller. The controller is configured to execute control for an end-portion voltage that is a DC voltage of a transfer bias at a time of transferring a toner image to an end portion of a recording sheet and a body-portion voltage that is a DC voltage of a transfer bias at a time of transferring a toner image to a body portion on a rear side of an end portion of a recording sheet, such that the end-portion voltage is set to be higher than the body-portion voltage in the DC transfer bias and a value obtained by dividing the end-portion voltage by the body-portion voltage in the superimposed transfer bias is set to be smaller than a value obtained by dividing the end-portion voltage by the body-portion voltage in the DC transfer bias.

4. 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。

5. 发明申请

US20160334738A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20160334738A1
公开(公告)日：2016-11-17
申请号：US15142424
申请日：2016-04-29
申请人： Naoto KOCHI , Kenji SUGIURA , Hirokazu ISHll , Hiroyoshi HAGA , Yuuji WADA , Takehide MIZUTANI , Naohiro KUMAGAI , Junpei FUJITA , Tatsuya OHSUGI , Kazuki YOGOSAWA
发明人： Naoto KOCHI , Kenji SUGIURA , Hirokazu ISHll , Hiroyoshi HAGA , Yuuji WADA , Takehide MIZUTANI , Naohiro KUMAGAI , Junpei FUJITA , Tatsuya OHSUGI , Kazuki YOGOSAWA
IPC分类号： G03G15/16
CPC分类号： G03G15/163 , G03G15/1605 , G03G15/1675 , G03G2215/0129
摘要： An image forming apparatus includes an image bearer, a transfer device contacting the image bearer to form a transfer portion, a transfer bias power source, and a controller. A ratio of a time period of application of the opposite-directional bias to a total time period of one cycle of the AC component of the superimposed bias is greater than 50%. A ratio of a value of the DC component of the superimposed bias output within a region ranging from a leading end of the recording medium to a predetermined length to a value of the DC component of the superimposed bias output outside the region is greater than a ratio of a value of the AC component of the superimposed bias output within the region to a value of the AC component of the superimposed bias output outside the region.
摘要翻译：图像形成装置包括图像载体，与图像载体接触以形成转印部分的转印装置，转印偏压电源和控制器。反向偏置的施加时间周期与叠加偏压的交流分量的一个周期的总时间周期的比率大于50％。在从记录介质的前端到预定长度的范围内的叠加偏压输出的直流分量的值与区域外的叠加偏压输出的直流分量的值之比大于比率将该区域内的叠加偏压输出的AC分量的值设定为该区域外的叠加偏压输出的交流分量的值。

6. 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。

7. 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。

8. 发明申请

US20190243288A1 TRANSFER DEVICE AND IMAGE FORMING APPARATUS INCORPORATING SAME 审中-公开
公开(公告)号：US20190243288A1
公开(公告)日：2019-08-08
申请号：US16248939
申请日：2019-01-16
申请人： Takahiro SUZUKI , Yuuji WADA , Naoto KOCHI , Shinya TANAKA
发明人： Takahiro SUZUKI , Yuuji WADA , Naoto KOCHI , Shinya TANAKA
IPC分类号： G03G15/16
摘要： A transfer device includes an intermediate transfer belt configured to bear a toner image and rotate, a transferor configured to contact the intermediate transfer belt via a recording medium and form a transfer nip, a guide configured to guide the recording medium conveyed to the transfer nip, and a pressure reducing device. The intermediate transfer belt is shaped as an endless belt. The pressure reducing device is configured to reduce pressure-contact force of the transferor against the intermediate transfer belt as the recording medium advances in the transfer nip. Therefore, a trailing end of the recording medium does not move toward the intermediate transfer belt when the trailing end of the recording medium has passed the guide.

9. 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.

10. 发明申请

US20150346651A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20150346651A1
公开(公告)日：2015-12-03
申请号：US14712307
申请日：2015-05-14
申请人： Haruki NAGATA , Ryo HASEGAWA , Naoto KOCHI , Atsushi NAGATA , Takahiro KONISHI
发明人： Haruki NAGATA , Ryo HASEGAWA , Naoto KOCHI , Atsushi NAGATA , Takahiro KONISHI
IPC分类号： G03G15/16
CPC分类号： G03G15/1665 , G03G15/1605 , G03G2215/00738 , G03G2215/0193
摘要： An image forming apparatus includes an image bearer, a nip forming device, a contact-and-separation device, a thickness information retrieving device, and a controller. The contact-and-separation device moves the image bearer and the nip forming device to contact and separate from each other. The controller controls the contact-and-separation device based on information on a thickness of a recording medium obtained by the thickness information retrieving device such that in a case in which a thickness of a preceding recording medium and a thickness of a successive recording medium are different in continuous printing in which a plurality of recording media is printed out continuously, the contact-and-separation device adjusts a space between the image bearer and the nip forming device when the preceding recording medium exits the transfer nip to a preset size corresponding to the thickness of the successive recording medium that enters the transfer nip.
摘要翻译：图像形成装置包括图像载体，压区形成装置，接触 - 分离装置，厚度信息检索装置和控制器。接触分离装置使图像载体和辊隙形成装置相互接触和分离。控制器基于由厚度信息检索装置获得的记录介质的厚度的信息来控制接触 - 分离装置，使得在先前记录介质的厚度和连续记录介质的厚度为在连续打印多个记录介质的连续打印不同的情况下，当前一记录介质离开传送辊隙时，接触 - 分离装置调整图像载体和辊隙形成装置之间的空间，使其对应于进入转印辊隙的连续记录介质的厚度。

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