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1. 发明授权

US10496002B2 Image forming apparatus and control method for controlling photoconductor film thickness detection 有权
公开(公告)号：US10496002B2
公开(公告)日：2019-12-03
申请号：US16249113
申请日：2019-01-16
申请人： Jyunya Sakuraba , Shinji Minami
发明人： Jyunya Sakuraba , Shinji Minami
IPC分类号： G03G15/00 , G03G15/02
CPC分类号： G03G15/0266 , G03G15/75
摘要： An image forming apparatus includes a photoconductor, a power supply, and circuitry. The power supply is configured to apply a charging voltage to the photoconductor. The circuitry is configured to control film thickness detection of detecting a charging current corresponding to the charging voltage to detect a film thickness of a surface of the photoconductor. The circuitry is further configured to determine a sampling period taken to detect the charging current; calculate a variation in the charging current detected; and determine whether the variation is greater than a threshold. The circuitry is configured to: determine the sampling period according to a determination result as to whether the variation is greater than the threshold; and sample the charging current for the sampling period determined, on a subsequent film thickness detection control.

2. 发明申请

US20190286004A1 IMAGE FORMING APPARATUS AND CONTROL METHOD EMPLOYED BY IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20190286004A1
公开(公告)日：2019-09-19
申请号：US16249113
申请日：2019-01-16
申请人： Jyunya Sakuraba , Shinji MINAMI
发明人： Jyunya Sakuraba , Shinji MINAMI
IPC分类号： G03G15/02
摘要： An image forming apparatus includes a photoconductor, a power supply, and circuitry. The power supply is configured to apply a charging voltage to the photoconductor. The circuitry is configured to control film thickness detection of detecting a charging current corresponding to the charging voltage to detect a film thickness of a surface of the photoconductor. The circuitry is further configured to determine a sampling period taken to detect the charging current; calculate a variation in the charging current detected; and determine whether the variation is greater than a threshold. The circuitry is configured to: determine the sampling period according to a determination result as to whether the variation is greater than the threshold; and sample the charging current for the sampling period determined, on a subsequent film thickness detection control.

3. 发明申请

US20120207495A1 FIXING DEVICE, IMAGE FORMING APPARATUS, AND METHOD OF CONTROLLING FIXING DEVICE 失效
标题翻译：固定装置，图像形成装置以及控制固定装置的方法
公开(公告)号：US20120207495A1
公开(公告)日：2012-08-16
申请号：US13369522
申请日：2012-02-09
申请人： Jyunya Sakuraba , Hiroju Takanezawa
发明人： Jyunya Sakuraba , Hiroju Takanezawa
IPC分类号： G03G15/20
CPC分类号： G03G15/2078 , G03G15/2039 , G03G15/2046 , G03G15/2064 , G03G2215/0129 , G03G2215/2032 , G03G2215/2045
摘要： In an embodiment, a fixing device includes: a fixing member that revolves in a circumferential direction in a heated state and transfers heat to a recording medium that is brought into contact with an outer circumferential face thereof; a temperature detecting unit that detects a temperature of the outer circumferential face of the fixing member; and a circumferential-direction position adjusting unit that adjusts a circumferential-direction position of the fixing member such that the recording medium is brought into contact with a high temperature portion out of the high-temperature portion of the outer circumferential face of the fixing member of which temperature detected by the temperature detecting unit is relatively high and a low-temperature portion of which temperature detected by the temperature detecting unit is relatively low.
摘要翻译：在一个实施例中，固定装置包括：固定构件，其在加热状态下沿圆周方向旋转并将热量传递到与其外周面接触的记录介质; 温度检测单元，其检测所述固定构件的外周面的温度; 以及周向位置调整单元，其调整所述固定构件的周向位置，使得所述记录介质与所述固定构件的所述固定构件的外周面的高温部分中的高温部分接触由温度检测单元检测到的温度相对较高，并且由温度检测单元检测到的温度的低温部分相对较低。

4. 发明授权

US10101690B2 Image forming apparatus 有权
公开(公告)号：US10101690B2
公开(公告)日：2018-10-16
申请号：US15596365
申请日：2017-05-16
申请人： Kenji Sugiura , Naohiro Kumagai , Seiichi Kogure , Junpei Fujita , Kazuki Yogosawa , Yuuji Wada , Jyunya Sakuraba
发明人： Kenji Sugiura , Naohiro Kumagai , Seiichi Kogure , Junpei Fujita , Kazuki Yogosawa , Yuuji Wada , Jyunya Sakuraba
IPC分类号： G03G15/16
摘要： An image forming apparatus includes an image bearer including a first image portion to bear a first toner image, a second image portion to bear a second toner image, and a non-image portion to bear an adjustment pattern. A transferor forms a transfer nip with the image bearer. A controller controls the power source to output an image bias as a transfer bias to transfer the first toner image and the second toner image onto a first recording medium and a second recording medium, respectively, in the transfer nip when the first image portion and the second image portion pass through the transfer nip and output a non-image bias as the transfer bias when the non-image portion passes through the transfer nip. The controller performs a constant current control on the image bias and performs a constant voltage control when the image bias switches to the non-image bias.

5. 发明申请

US20170329263A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20170329263A1
公开(公告)日：2017-11-16
申请号：US15596365
申请日：2017-05-16
申请人： Kenji Sugiura , Naohiro Kumagai , Seiichi Kogure , Junpei Fujita , Kazuki Yogosawa , Yuuji Wada , Jyunya Sakuraba
发明人： Kenji Sugiura , Naohiro Kumagai , Seiichi Kogure , Junpei Fujita , Kazuki Yogosawa , Yuuji Wada , Jyunya Sakuraba
IPC分类号： G03G15/16
CPC分类号： G03G15/1665 , G03G15/0189 , G03G15/1605 , G03G15/1675 , G03G15/5058
摘要： An image forming apparatus includes an image bearer including a first image portion to bear a first toner image, a second image portion to bear a second toner image, and a non-image portion to bear an adjustment pattern. A transferor forms a transfer nip with the image bearer. A controller controls the power source to output an image bias as a transfer bias to transfer the first toner image and the second toner image onto a first recording medium and a second recording medium, respectively, in the transfer nip when the first image portion and the second image portion pass through the transfer nip and output a non-image bias as the transfer bias when the non-image portion passes through the transfer nip. The controller performs a constant current control on the image bias and performs a constant voltage control when the image bias switches to the non-image bias.

6. 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％。

7. 发明授权

US09459564B2 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US09459564B2
公开(公告)日：2016-10-04
申请号：US14881611
申请日：2015-10-13
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： G03G15/20 , 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％。

8. 发明授权

US08774662B2 Fixing device, image forming apparatus, and method of controlling fixing device 失效
标题翻译：固定装置，成像装置和控制定影装置的方法
公开(公告)号：US08774662B2
公开(公告)日：2014-07-08
申请号：US13369522
申请日：2012-02-09
申请人： Jyunya Sakuraba , Hiroju Takanezawa
发明人： Jyunya Sakuraba , Hiroju Takanezawa
IPC分类号： G03G15/20
CPC分类号： G03G15/2078 , G03G15/2039 , G03G15/2046 , G03G15/2064 , G03G2215/0129 , G03G2215/2032 , G03G2215/2045
摘要： In an embodiment, a fixing device includes: a fixing member that revolves in a circumferential direction in a heated state and transfers heat to a recording medium that is brought into contact with an outer circumferential face thereof; a temperature detecting unit that detects a temperature of the outer circumferential face of the fixing member; and a circumferential-direction position adjusting unit that adjusts a circumferential-direction position of the fixing member such that the recording medium is brought into contact with a high temperature portion out of the high-temperature portion of the outer circumferential face of the fixing member of which temperature detected by the temperature detecting unit is relatively high and a low-temperature portion of which temperature detected by the temperature detecting unit is relatively low.
摘要翻译：在一个实施例中，固定装置包括：固定构件，其在加热状态下沿圆周方向旋转并将热量传递到与其外周面接触的记录介质; 温度检测单元，其检测所述固定构件的外周面的温度; 以及周向位置调整单元，其调整所述固定构件的周向位置，使得所述记录介质与所述固定构件的所述固定构件的外周面的高温部分中的高温部分接触由温度检测单元检测到的温度相对较高，并且由温度检测单元检测到的温度的低温部分相对较低。

9. 发明授权

US09703252B2 Power supply controlling device, power supply device, image forming apparatus, and power supply controlling method 有权
公开(公告)号：US09703252B2
公开(公告)日：2017-07-11
申请号：US15213851
申请日：2016-07-19
申请人： Yuuto Hakamada , Masahide Nakaya , Jyunya Sakuraba
发明人： Yuuto Hakamada , Masahide Nakaya , Jyunya Sakuraba
IPC分类号： G03G15/00 , H02M3/28 , H02M3/335 , G03G15/16 , H02M1/00
CPC分类号： G03G15/80 , G03G15/1675 , H02M3/28 , H02M3/33569 , H02M2001/0009
摘要： A power supply controlling device includes: a direct-current power supply configured to output a direct-current voltage; an alternating-current power supply configured to output one selected from between a superimposed voltage obtained by superimposing an alternating-current voltage onto the direct-current voltage and the direct-current voltage; a bypass capacitor configured to partially store therein an output from the alternating-current power supply and configured to, when the direct-current voltage is output from the direct-current power supply while no electric charge is stored therein, store therein a second direct current being a part of a first direct current output from the direct-current power supply in conjunction with the output of the direct-current voltage; and a power supply controlling unit configured to cause the direct-current power supply to control a level of the direct-current voltage based on a target value for the first direct current and a value indicating the second direct current.

10. 发明申请

US20170023904A1 POWER SUPPLY CONTROLLING DEVICE, POWER SUPPLY DEVICE, IMAGE FORMING APPARATUS, AND POWER SUPPLY CONTROLLING METHOD 有权
标题翻译：电源控制装置，电源装置，图像形成装置和电源控制方法
公开(公告)号：US20170023904A1
公开(公告)日：2017-01-26
申请号：US15213851
申请日：2016-07-19
申请人： Yuuto HAKAMADA , Masahide NAKAYA , Jyunya SAKURABA
发明人： Yuuto HAKAMADA , Masahide NAKAYA , Jyunya SAKURABA
IPC分类号： G03G15/00 , H02M1/08 , G03G15/16
CPC分类号： G03G15/80 , G03G15/1675 , H02M3/28 , H02M3/33569 , H02M2001/0009
摘要： A power supply controlling device includes: a direct-current power supply configured to output a direct-current voltage; an alternating-current power supply configured to output one selected from between a superimposed voltage obtained by superimposing an alternating-current voltage onto the direct-current voltage and the direct-current voltage; a bypass capacitor configured to partially store therein an output from the alternating-current power supply and configured to, when the direct-current voltage is output from the direct-current power supply while no electric charge is stored therein, store therein a second direct current being a part of a first direct current output from the direct-current power supply in conjunction with the output of the direct-current voltage; and a power supply controlling unit configured to cause the direct-current power supply to control a level of the direct-current voltage based on a target value for the first direct current and a value indicating the second direct current.
摘要翻译：电源控制装置包括：被配置为输出直流电压的直流电源; 交流电源，被配置为从通过将交流电压叠加到所述直流电压而获得的叠加电压与所述直流电压之间输出; 旁路电容器，其被配置为部分地存储来自所述交流电源的输出，并且被配置为当在不存储电荷的情况下从所述直流电源输出所述直流电压时，在其中存储第二直流电流作为直流电源的第一直流输出与直流电压的输出的一部分; 以及电源控制单元，被配置为基于所述第一直流电的目标值和指示所述第二直流的值，使所述直流电源控制所述直流电压的电平。

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