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11.发明授权公开(公告)号：US11567424B2
公开(公告)日：2023-01-31
申请号：US17470866
申请日：2021-09-09
Applicant: KYOCERA Document Solutions Inc.
Inventor： Shiro Kaneko , Hiroka Itani
IPC: G03G15/09 , G03G15/06 , G03G15/095 , G03G21/00 , G03G15/00
Abstract: An image forming apparatus includes an image carrier, a developing device, a voltage applier, a current detector, a cleaning blade, and a control device. The control device acts as a measurer and an estimator. The measurer changes the DC bias to a first value and a second value, and acquires a first magnitude of the developing current corresponding to the first value, and a second magnitude of the developing current corresponding to the second value, from the current detector. The estimator calculates a current ratio between the first magnitude and the second magnitude, and estimates deterioration status of the cleaning blade, according to the value of the current ratio.
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公开(公告)号：US20210200112A1
公开(公告)日：2021-07-01
申请号：US17126127
申请日：2020-12-18
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kanako Morimoto , Tamotsu Shimizu , Kazunori Tanaka , Hiroka Itani
Abstract: According to one embodiment, an image forming apparatus includes an image forming portion, and a control portion. The image forming portion includes an image carrier, a charging device, and a cleaning device. The charging device includes a charging roller which contacts a surface of the image carrier. The cleaning device includes a cleaning blade, and an adjustment portion. The cleaning blade slidably contacts the surface of the image carrier. The adjustment portion adjusts a linear pressure of the cleaning blade exerted on the surface of the image carrier. The control portion executes, when a rate of increase of an outer layer resistance value of the charging roller caused by a decrease in the function of the cleaning blade is greater than or equal to a first rate, linear pressure adjustment control of controlling the adjustment portion to increase the linear pressure of the cleaning blade.
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13.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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公开(公告)号：US20220414852A1
公开(公告)日：2022-12-29
申请号：US17844196
申请日：2022-06-20
Applicant: KYOCERA Document Solutions Inc.
Inventor： Shiro Kaneko , Hiroka Itani , Koji Sato , Naomichi Higashiyama
Abstract: An anomaly detecting unit detects an anomaly object in a target image. A characteristic amount watching unit watches at least two basic characteristic amounts of the anomaly object, determines whether values of the basic characteristic amounts satisfy a predetermined watching determination condition of any one of predetermined plural anomaly types or not, if it is determined that the values of the basic characteristic amounts satisfy the watching determination condition, determines as an auxiliary characteristic amount for the anomaly object a characteristic amount corresponding to the anomaly type of which the values of the basic characteristic amounts satisfy the watching determination condition, and starts watching a value of the auxiliary characteristic amount. An anomaly type determining unit determines an anomaly type of the anomaly object on the basis of the basic characteristic amounts and the auxiliary characteristic amount currently watched by the characteristic amount watching unit.
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公开(公告)号：US11079697B2
公开(公告)日：2021-08-03
申请号：US17126127
申请日：2020-12-18
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kanako Morimoto , Tamotsu Shimizu , Kazunori Tanaka , Hiroka Itani
Abstract: According to one embodiment, an image forming apparatus includes an image forming portion, and a control portion. The image forming portion includes an image carrier, a charging device, and a cleaning device. The charging device includes a charging roller which contacts a surface of the image carrier. The cleaning device includes a cleaning blade, and an adjustment portion. The cleaning blade slidably contacts the surface of the image carrier. The adjustment portion adjusts a linear pressure of the cleaning blade exerted on the surface of the image carrier. The control portion executes, when a rate of increase of an outer layer resistance value of the charging roller caused by a decrease in the function of the cleaning blade is greater than or equal to a first rate, linear pressure adjustment control of controlling the adjustment portion to increase the linear pressure of the cleaning blade.
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Patent Agency Ranking
16.发明授权公开(公告)号：US10534281B2
公开(公告)日：2020-01-14
申请号：US16182087
申请日：2018-11-06
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Hiroka Itani , Kenichi Tamaki
Abstract: An image forming apparatus has an image carrier, an electrifying member, and a charge eliminating device, and eliminates remaining charge on the surface of the image carrier by the charge eliminating device. The charge eliminating device includes a discharge member. The discharge member includes an electro conductive knit fabric knitted in a cylindrical shape using twisted yarn made of twisted metal fibers and a support member having a cylindrical shape and inserted in the electro conductive knit fabric, and is disposed to face the image carrier in a noncontact manner. A magnet member is disposed inside the image carrier within a charge elimination nip width between two tangential lines of an outer circumference surface of the discharge member, the two tangential lines being parallel to a straight line passing through a rotation center of the image carrier and a center axis of the discharge member.
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公开(公告)号：US10394187B2
公开(公告)日：2019-08-27
申请号：US16117006
申请日：2018-08-30
Applicant: KYOCERA Document Solutions Inc.
Inventor： Keigo Kimura , Hiroka Itani , Yoshiyuki Odaka , Hiroaki Watanabe
IPC: G03G21/20 , G03G15/043 , G03G15/04
Abstract: An image forming apparatus includes a photoreceptor and an exposure device. The exposure device is configured to expose a surface of the photoreceptor and to form an electrostatic latent image. The exposure device includes a light source, a polygon mirror and a polygon motor. The light source is configured to emit a beam. The polygon mirror is configured to deflect the beam emitted from the light source. The polygon motor is configured to rotate the polygon mirror. The polygon motor is rotated at least temporarily when an aging mode to remove moisture from the surface of the photoreceptor is executed.
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18.发明授权公开(公告)号：US09983499B2
公开(公告)日：2018-05-29
申请号：US15464860
申请日：2017-03-21
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kenichi Tamaki , Tamotsu Shimizu , Hiroka Itani
CPC classification number: G03G15/0241 , G03G15/6552 , G03G21/06
Abstract: A discharging member includes an electrically conductive knit fabric, a support member, and a first magnet member. The conductive knit fabric is knitted into a cylindrical shape with use of yarn formed by twisting together a plurality of metal fibers. The support member is cylindrical shaped and inserted in the conductive knit fabric. The first magnet member is placed inside the support member. With the conductive knit fabric grounded or with a voltage applied to the conductive knit fabric, the discharging member is placed in noncontact with a discharged member in such a fashion that the first magnet member is opposed to the discharged member with the support member and the conductive knit fabric interposed therebetween.
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公开(公告)号：US20140363180A1
公开(公告)日：2014-12-11
申请号：US14297405
申请日：2014-06-05
Applicant: KYOCERA Document Solutions Inc.
Inventor： Hiroka Itani
IPC: G03G15/00
CPC classification number: G03G21/203 , G03G21/0094
Abstract: An image forming apparatus includes a slidingly-rubbing roller abutting a surface of a photoconductive drum; a temperature detection section; a humidity detection section; and a heating control section. In a case when the humidity detected by the humidity detection section is equal to or higher than first threshold humidity and also when the temperature detected by the temperature detection section is equal to or higher than a threshold temperature, the heating control section heats and dries the surface of the photoconductive drum by a heat generator, while in a case when the humidity is equal to or higher than first threshold humidity and also when the temperature is less than the threshold temperature, the heating control section polishes the surface of the photoconductive drum by the slindingly-rubbing roller with a polishing agent contained in a toner and heats and dries the drum surface by friction heat generated following the polishing.
Abstract translation: 图像形成装置包括抵靠感光鼓的表面的滑动摩擦辊; 温度检测部; 湿度检测部; 和加热控制部。 在由湿度检测部检测出的湿度为第一阈值湿度以上的情况下，在由温度检测部检测出的温度为阈值温度以上的情况下，加热控制部， 在湿度等于或高于第一阈值湿度的情况下，并且当温度低于阈值温度时，加热控制部分将感光鼓的表面用 具有抛光剂的滑动摩擦辊包含在调色剂中，并且通过在抛光之后产生的摩擦热而加热并干燥滚筒表面。
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公开(公告)号：US08706007B2
公开(公告)日：2014-04-22
申请号：US13975944
申请日：2013-08-26
Applicant: KYOCERA Document Solutions Inc.
Inventor： Shinki Miyaji , Masaki Kadota , Yoshitaka Imanaka , Hiroka Itani , Masahito Ishino
CPC classification number: G03G15/02 , G03G5/04 , G03G5/0596 , G03G15/75
Abstract: An image forming apparatus includes a positively-charged single layer type electrophotographic photoreceptor, a charging device with a contact charging roller for charging a surface of the photoreceptor and an exposure device for exposing the charged surface of the photoreceptor to light to form an electrostatic latent image thereon. A developing device develops the electrostatic latent image into a toner image and a transfer device transfers the toner image to a transferred body. The charging roller is made of electrically conductive rubber having an Asker-C rubber hardness of 62 to 81°. A roller surface roughness of the charging roller has an average distance (Sm) between asperity peaks on a cross-sectional curve of 55 to 130 μm and that a ten-point average roughness (Rz) is 9 to 19 μm. The image forming apparatus is capable of preventing carrier trapping, film peeling and uneven charging in the photoreceptor.
Abstract translation: 图像形成装置包括带正电的单层电子照相感光体，具有用于对感光体的表面充电的接触充电辊的充电装置和用于将感光体的带电表面曝光以形成静电潜像的曝光装置 上。 显影装置将静电潜像显影成调色剂图像，并且转印装置将调色剂图像转印到转印体上。 充电辊由Asker-C橡胶硬度为62〜81°的导电橡胶制成。 充电辊的辊表面粗糙度在55-130μm的横截面曲线上的平均峰值之间的平均距离（Sm），并且十点平均粗糙度（Rz）为9至19μm。 图像形成装置能够防止感光体中的载体捕获，膜剥离和不均匀充电。
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