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公开(公告)号：US11815839B2
公开(公告)日：2023-11-14
申请号：US17932620
申请日：2022-09-15
Applicant: KYOCERA Document Solutions Inc.
Inventor： Keisuke Oba , Masaru Watanabe , Yasuaki Sakamoto , Kanako Kikuchi , Ayato Morikami , Yuki Nakaiwa , Koji Uno , Takuji Watanabe
IPC: G03G15/00
CPC classification number: G03G15/5054 , G03G15/5058
Abstract: 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.
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12.发明授权公开(公告)号：US10042318B2
公开(公告)日：2018-08-07
申请号：US15474869
申请日：2017-03-30
Applicant: KYOCERA Document Solutions Inc.
Inventor： Hiroka Itani , Nariaki Tanaka , Shingo Sakato , Kiyotaka Kobayashi , Takuji Watanabe , Eriko Hayashi
Abstract: 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.
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13.发明授权Image forming apparatus including a control unit controlling bias applied to a charging member and a transfer member 有权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
Applicant: KYOCERA Document Solutions Inc.
Inventor： Shingo Sakato , Takuji Watanabe
CPC classification number: G03G15/24 , G03G15/0266 , G03G15/1675
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US12078958B2
公开(公告)日：2024-09-03
申请号：US18332249
申请日：2023-06-09
Applicant: KYOCERA Document Solutions Inc.
Inventor： Hiroshi Yamazaki , Junichi Nakagawa , Tamotsu Shimizu , Kenichi Tamaki , Takuji Watanabe
IPC: G03G21/20
CPC classification number: G03G21/206
Abstract: Provided is an image forming apparatus that is capable of carrying out a scattered-toner recovery mode in which, while image formation is prevented from being performed, scattered toner that has dropped from a filter and adhered to an outer peripheral surface of a developer carrying member is recovered by a cleaning unit through intermediation of an image bearing member. A fixed magnet of the developer carrying member has a first pole that faces the image bearing member, a second pole that faces the filter, and an intermediate pole between the first pole and the second pole.
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公开(公告)号：US11977351B2
公开(公告)日：2024-05-07
申请号：US18331704
申请日：2023-06-08
Applicant: KYOCERA Document Solutions Inc.
Inventor： Takuji Watanabe , Junichi Nakagawa , Kenichi Tamaki , Hiroshi Yamazaki , Tamotsu Shimizu
CPC classification number: G03G21/206 , G03G15/0266 , G03G15/065 , G03G15/09 , G03G21/0047 , G03G21/0052 , G03G21/10 , G03G21/105 , G03G21/1814 , G03G2215/00025 , G03G2221/1645
Abstract: An image forming apparatus includes a development device, and a control unit that controls the development device. The development device includes a toner collection mechanism having a duct, a filter, and an exhaust fan. The duct is connected to a conveyance chamber of the development container and allows air in the conveyance chamber to flow through. The filter is disposed at a connecting part between the duct and the conveyance chamber, and collects toner flowing into the duct from the conveyance chamber. The exhaust fan makes the air in the conveyance chamber flow to the outside via the duct. The control unit changes rotational frequency or operation frequency of the exhaust fan based on current detected by a current detection unit at non-image forming time.
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Patent Agency Ranking
公开(公告)号：US20230213880A1
公开(公告)日：2023-07-06
申请号：US18147174
申请日：2022-12-28
Applicant: KYOCERA Document Solutions Inc.
Inventor： Masaru Watanabe , Kanako Kikuchi , Yasuaki Sakamoto , Ayato Morikami , Yuki Nakaiwa , Keisuke Oba , Koji Uno , Takuji Watanabe
CPC classification number: G03G15/5041 , G03G15/5058 , G03G15/0131 , G03G2215/00059
Abstract: A processor causes a printing portion to execute, when first conveying processing is executed, test print processing for executing processing of forming a plurality of test toner images on a sheet under a print condition that differs for each of the plurality of test toner images. The processor acquires a plurality of first sensing densities when the first conveying processing is executed. The processor causes the printing portion to execute the test print processing when second conveying processing is executed. The processor acquires a plurality of second sensing densities when the second conveying processing is executed. The processor compares the plurality of first sensing densities and the plurality of second sensing densities to adjust the print condition in the print processing when the second conveying processing is executed.
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公开(公告)号：US20230080093A1
公开(公告)日：2023-03-16
申请号：US17932620
申请日：2022-09-15
Applicant: KYOCERA Document Solutions Inc.
Inventor： Keisuke Oba , Masaru Watanabe , Yasuaki Sakamoto , Kanako Kikuchi , Ayato Morikami , Yuki Nakaiwa , Koji Uno , Takuji Watanabe
IPC: G03G15/00
Abstract: 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.
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18.发明申请公开(公告)号：US20230051298A1
公开(公告)日：2023-02-16
申请号：US17884421
申请日：2022-08-09
Applicant: KYOCERA Document Solutions Inc.
Inventor： Masaru Watanabe , Kanako Kikuchi , Yasuaki Sakamoto , Ayato Morikami , Yuki Nakaiwa , Keisuke Oba , Koji Uno , Takuji Watanabe
IPC: G03G15/043
Abstract: 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.
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公开(公告)号：US10901339B2
公开(公告)日：2021-01-26
申请号：US16737479
申请日：2020-01-08
Applicant: KYOCERA Document Solutions Inc.
Inventor： Takuji Watanabe , Norio Tomiie
Abstract: 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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20.发明授权公开(公告)号：US10310441B2
公开(公告)日：2019-06-04
申请号：US16081152
申请日：2018-01-12
Applicant: KYOCERA Document Solutions Inc.
Inventor： Shingo Sakato , Nariaki Tanaka , Kiyotaka Kobayashi , Hiroka Itani , Takuji Watanabe , Eriko Hayashi
Abstract: 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.
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