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1. 发明申请

US20130279928A1 IMAGE FORMING APPARATUS 有权
标题翻译：图像形成装置
公开(公告)号：US20130279928A1
公开(公告)日：2013-10-24
申请号：US13867459
申请日：2013-04-22
申请人： KYOCERA DOCUMENT SOLUTIONS INC.
发明人： Shingo Sakato , Takuji Watanabe
IPC分类号： G03G15/02 , G03G15/16
CPC分类号： G03G15/24 , G03G15/0266 , G03G15/1675
摘要： An image forming apparatus includes a photosensitive drum, a charging roller, a transfer roller, a first bias application unit, a second bias application unit, and a control unit. The charging roller contains an ion conductive material. The first bias application unit applies a first bias to the charging roller. The second bias application unit applies a predetermined bias to the transfer roller. The control unit controls the first bias application unit not to apply the first bias to the charging roller in a non-image forming period in which a toner image is not formed on the photosensitive drum. The control unit controls the second bias application unit to apply the second bias, which is a bias that can electrically charge the surface of the photosensitive drum, to the transfer roller in the non-image forming period.
摘要翻译：图像形成装置包括感光鼓，充电辊，转印辊，第一偏压施加单元，第二偏压施加单元和控制单元。充电辊包含离子导电材料。第一偏置施加单元对充电辊施加第一偏压。第二偏压施加单元对转印辊施加预定的偏压。控制单元控制第一偏置施加单元在不在感光鼓上未形成调色剂图像的非图像形成期间内对第一偏压施加到充电辊。控制单元控制第二偏压施加单元，以在非图像形成期间内将作为可以使感光鼓的表面充电的偏压的第二偏压施加到转印辊。

2. 发明授权

US10976680B2 Image forming apparatus in which AC-type biasing is adopted for charging or development 有权
公开(公告)号：US10976680B2
公开(公告)日：2021-04-13
申请号：US16737426
申请日：2020-01-08
申请人： KYOCERA Document Solutions Inc.
发明人： Takuji Watanabe , Norio Tomiie
IPC分类号： G03G15/02 , G03G15/06 , G03G15/00
摘要： In an image forming apparatus, a bias controller varies one, while keeping the other fixed, of a charging alternating-current frequency, which is the frequency of the charging alternating-current voltage, and a developing alternating-current frequency, which is the frequency of the developing alternating-current voltage. Specifically, in a case where interference fringes appear in a developed image due to interference between the charging and developing alternating-current frequencies, when the recognizable minimum pitch of the interference fringes is A1 (mm), the width of the variation region of the other frequency is B1 (Hz), the rotation speed of an image carrying member is C1 (mm/sec), and the variation speed of the other frequency in the variation region is D1 (Hz/sec), the bias controller varies the other frequency at a variation speed D1 that fulfills |D1|>B1/(A1/C1).

3. 发明授权

US10082764B2 Developing device, image forming apparatus, magnetic pole position correcting method 有权
公开(公告)号：US10082764B2
公开(公告)日：2018-09-25
申请号：US15838128
申请日：2017-12-11
申请人： KYOCERA Document Solutions Inc.
发明人： Shinji Yamane , Takuji Watanabe
IPC分类号： G03G15/09 , G03G21/16
CPC分类号： G03G21/1676 , G03G15/0921 , G03G21/1604 , G03G2215/0619
摘要： A developing device includes a developing roller and a developing magnetic pole. The developing roller is disposed to face an image carrier across a predetermined gap. The developing magnetic pole is provided in the developing roller so as to be displaced between first and second magnetic pole positions. When the developing magnetic pole is at the first magnetic pole position, a magnetic field is generated at a first position in the gap. When the developing magnetic pole is at the second magnetic pole position, a magnetic field is generated at a second position in the gap. When a circumferential speed ratio of the developing roller to the image carrier is increased, the developing magnetic pole is displaced toward the second magnetic pole position, and when the circumferential speed ratio is decreased, the developing magnetic pole is displaced toward the first magnetic pole position.

4. 发明申请

US20170285506A1 ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS AND ELECTRICITY REMOVING MEMBER USED IN THE SAME 审中-公开
公开(公告)号：US20170285506A1
公开(公告)日：2017-10-05
申请号：US15474869
申请日：2017-03-30
申请人： KYOCERA Document Solutions Inc.
发明人： Hiroka Itani , Nariaki Tanaka , Shingo Sakato , Kiyotaka Kobayashi , Takuji Watanabe , Eriko Hayashi
IPC分类号： G03G21/00
CPC分类号： G03G21/06
摘要： An image forming apparatus includes a photoconductor and an electricity removing member electrically grounded and disposed to be in contact with a surface of the photoconductor. In the image forming apparatus, with regard to a capacitance component of an inner impedance of the electricity removing member and a capacitance component of a contact impedance of the electricity removing member that are calculated from a Cole-Cole plot obtained from measurement by an AC impedance method in a predetermined frequency range, a value obtained by dividing the capacitance component of the contact impedance by the capacitance component of the inner impedance is equal to or lower than a predetermined first specific value, and the capacitance component of the inner impedance is equal to or lower than a predetermined second specific value.

5. 发明申请

US20190072894A1 ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS, AND ELECTRICITY REMOVING MEMBER USED IN IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20190072894A1
公开(公告)日：2019-03-07
申请号：US16081152
申请日：2018-01-12
申请人： KYOCERA Document Solutions Inc.
发明人： Shingo Sakato , Nariaki Tanaka , Kiyotaka Kobayashi , Hiroka Itani , Takuji Watanabe , Eriko Hayashi
IPC分类号： G03G21/06 , G03G15/00
摘要： In an image forming apparatus, a resistance component of an inner impedance of an electricity removing member is equal to or lower than a value that is obtained by multiplying a calculated resistance value by a first specific value, the calculated resistance value being calculated based on a predetermined formula as a DC resistance value of the electricity removing member that is required to reduce a pre-electricity-removal potential of a photoconductor to a predetermined post-electricity-removal potential during an electricity removal time, the first specific value being calculated based on a ratio of a linear speed of the electricity removing member to a linear speed of the photoconductor, and a resistance component of the contact impedance of the electricity removing member is equal to or lower than a value that is obtained by multiplying the calculated resistance value by a second specific value that is calculated based on the ratio.

6. 发明授权

US10042318B2 Electrophotographic image forming apparatus and electricity removing member used in the same 有权
公开(公告)号：US10042318B2
公开(公告)日：2018-08-07
申请号：US15474869
申请日：2017-03-30
申请人： KYOCERA Document Solutions Inc.
发明人： Hiroka Itani , Nariaki Tanaka , Shingo Sakato , Kiyotaka Kobayashi , Takuji Watanabe , Eriko Hayashi
IPC分类号： G03G21/00 , G03G21/06
摘要： An image forming apparatus includes a photoconductor and an electricity removing member electrically grounded and disposed to be in contact with a surface of the photoconductor. In the image forming apparatus, with regard to a capacitance component of an inner impedance of the electricity removing member and a capacitance component of a contact impedance of the electricity removing member that are calculated from a Cole-Cole plot obtained from measurement by an AC impedance method in a predetermined frequency range, a value obtained by dividing the capacitance component of the contact impedance by the capacitance component of the inner impedance is equal to or lower than a predetermined first specific value, and the capacitance component of the inner impedance is equal to or lower than a predetermined second specific value.

7. 发明授权

US09063496B2 Image forming apparatus including a control unit controlling bias applied to a charging member and a transfer member 有权
标题翻译：图像形成装置包括控制单元，控制施加到充电构件和转印构件的偏压
公开(公告)号：US09063496B2
公开(公告)日：2015-06-23
申请号：US13867459
申请日：2013-04-22
申请人： KYOCERA Document Solutions Inc.
发明人： Shingo Sakato , Takuji Watanabe
IPC分类号： G03G15/02 , G03G15/24 , G03G15/16
CPC分类号： G03G15/24 , G03G15/0266 , G03G15/1675
摘要： An image forming apparatus includes a photosensitive drum, a charging roller, a transfer roller, a first bias application unit, a second bias application unit, and a control unit. The charging roller contains an ion conductive material. The first bias application unit applies a first bias to the charging roller. The second bias application unit applies a predetermined bias to the transfer roller. The control unit controls the first bias application unit not to apply the first bias to the charging roller in a non-image forming period in which a toner image is not formed on the photosensitive drum. The control unit controls the second bias application unit to apply the second bias, which is a bias that can electrically charge the surface of the photosensitive drum, to the transfer roller in the non-image forming period.
摘要翻译：图像形成装置包括感光鼓，充电辊，转印辊，第一偏压施加单元，第二偏压施加单元和控制单元。充电辊包含离子导电材料。第一偏置施加单元对充电辊施加第一偏压。第二偏压施加单元对转印辊施加预定的偏压。控制单元控制第一偏置施加单元在不在感光鼓上未形成调色剂图像的非图像形成期间内对第一偏压施加到充电辊。控制单元控制第二偏压施加单元，以在非图像形成期间内将作为可以使感光鼓的表面充电的偏压的第二偏压施加到转印辊。

8. 发明申请

US20230080093A1 IMAGE FORMING APPARATUS CAPABLE OF ADJUSTING IMAGE FORMING CONDITION ACCURATELY, AND IMAGE FORMING CONDITION ADJUSTMENT METHOD 有权
公开(公告)号：US20230080093A1
公开(公告)日：2023-03-16
申请号：US17932620
申请日：2022-09-15
申请人： KYOCERA Document Solutions Inc.
发明人： Keisuke Oba , Masaru Watanabe , Yasuaki Sakamoto , Kanako Kikuchi , Ayato Morikami , Yuki Nakaiwa , Koji Uno , Takuji Watanabe
IPC分类号： G03G15/00
摘要： An image forming apparatus includes a transfer processing portion, a detection processing portion, a correction processing portion, and an adjustment processing portion. The transfer processing portion transfers a detection toner image to outside an output area of a transfer object to which a toner image as an output target is transferred from an image-carrying member. The detection processing portion detects a density of the detection toner image that has been transferred to the transfer object by the transfer processing portion. The correction processing portion corrects a detection result of the detection processing portion based on an amount of toner transferred from the image-carrying member to the output area at a transfer timing when the detection toner image is transferred. The adjustment processing portion adjusts an image forming condition based on the detection result after correction by the correction processing portion.

9. 发明申请

US20230051298A1 IMAGE FORMING APPARATUS CAPABLE OF DETECTING DEVIATION BETWEEN EXPOSURE DEVICE AND PHOTOCONDUCTOR DRUM 有权
公开(公告)号：US20230051298A1
公开(公告)日：2023-02-16
申请号：US17884421
申请日：2022-08-09
申请人： KYOCERA Document Solutions Inc.
发明人： Masaru Watanabe , Kanako Kikuchi , Yasuaki Sakamoto , Ayato Morikami , Yuki Nakaiwa , Keisuke Oba , Koji Uno , Takuji Watanabe
IPC分类号： G03G15/043
摘要： An image forming apparatus includes a developing current detecting portion, a control portion, and a deviation detecting portion. The developing current detecting portion detects a developing current that flows between a developing device and a photoconductor drum during development of an electrostatic latent image. The control portion causes the exposure device to form electrostatic latent images of at least two patch images at different positions from each other and at different timings from each other in a main scanning direction. The deviation detecting portion detects deviation of one of the exposure device and the photoconductor drum with respect to the other based on a detection timing at which the developing current is detected during development of the electrostatic latent images of the at least two patch images.

10. 发明授权

US10901339B2 Image forming apparatus which suppresses image defects due to interference between a charging alternating-current frequency and a developing alternating-current frequency 有权
公开(公告)号：US10901339B2
公开(公告)日：2021-01-26
申请号：US16737479
申请日：2020-01-08
申请人： KYOCERA Document Solutions Inc.
发明人： Takuji Watanabe , Norio Tomiie
IPC分类号： G03G15/06 , G03G15/02 , G03G15/00
摘要： An image forming apparatus has a bias controller. The bias controller varies both a charging alternating-current frequency, which is the frequency of a charging alternating-current voltage, and a developing alternating-current frequency, which is the frequency of the developing alternating-current voltage. When the region of the charging and developing alternating-current frequencies in which interference fringes appear in a developed image due to interference between the charging and developing alternating-current frequencies is taken as a variation region and the variation speeds of the charging and developing alternating-current frequencies in the variation region are taken as a first and a second variation speed respectively, the bias controller varies the charging and developing alternating-current frequencies such that one of the first and second variation speeds is a positive-number multiple of the other.

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