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公开(公告)号：US20220375052A1
公开(公告)日：2022-11-24
申请号：US17742798
申请日：2022-05-12
Applicant: KYOCERA Document Solutions Inc.
Inventor： Shiro Kaneko , Kanako Morimoto , Takuya Miyamoto , Naomichi Higashiyama
Abstract: An image processing apparatus compares a target image and a reference image and thereby detects an anomaly in the target image, and includes an anomaly detecting unit. The anomaly detecting unit is configured to (a) generate a first characteristic map obtained by performing a filter process for the target image and a second characteristic map obtained by performing the filter process for the reference image, (b) derive a correction amount on the basis of a deviation between an object in the first characteristic map and an object in the second characteristic map, and (c) correct the target image and/or the reference image with the correction amount and thereafter compare the target image and the reference image and thereby detect an anomaly in the target image.
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公开(公告)号：US12182991B2
公开(公告)日：2024-12-31
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：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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Patent Agency Ranking
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：US10996585B2
公开(公告)日：2021-05-04
申请号：US16985151
申请日：2020-08-04
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Mitsuhiro Hashimoto , Takahiro Okubo , Kazuhiro Nakachi , Shiro Kaneko
Abstract: An image forming apparatus includes an image forming portion, a high-voltage generation circuit, a current detection portion and a control portion. The image forming portion includes an image carrying member, a charging device, an exposure device and a developing device which includes a developer carrying member for carrying a developer including a carrier and a toner. The control portion can perform a development ghost prediction mode that includes a step of measuring the amount of charge of the toner within the developing device at the time of non-image formation, a step of measuring, as a carrier current, the direct-current component of a development current when the amount of development of the toner is 0 [mg/cm2] and a step of estimating the level of occurrence of development ghost and the cause of occurrence based on the amount of charge of the toner and the carrier current which are measured.
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公开(公告)号：US11320772B2
公开(公告)日：2022-05-03
申请号：US17470804
申请日：2021-09-09
Applicant: KYOCERA Document Solutions Inc.
Inventor： Shiro Kaneko , Hiroka Itani
Abstract: An image forming apparatus includes an image carrier, a developing device, a voltage applier, a current detector, a weight detector, and a control device. The control device acts as a first measurer, a second measurer, and an estimator. The first measurer acquires a toner use amount indicating weight per unit area, of the toner that has migrated from the developing agent carrier to the image carrier, according to a detection result provided by the weight detector. The second measurer acquires the developing current from the current detector. The estimator calculates a value of decision coefficient, obtained by dividing variance of an estimated value in a regression model between the toner use amount and the developing current, by variance of a sample value, and estimates deterioration status of the toner, according to the value of the decision coefficient.
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公开(公告)号：US11150574B2
公开(公告)日：2021-10-19
申请号：US17178577
申请日：2021-02-18
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Kazunori Tanaka , Kanako Morimoto , Shiro Kaneko
Abstract: An image forming apparatus includes a plurality of image forming units, a developing voltage power supply, a current detection unit, and a control unit. The image forming units form an image by superimposing a toner image of a same color and a same type, and substantially same development conditions are set to evenly divide an image density among the image forming units. The control unit detects whether there is an anomaly in the image forming unit based on detecting a DC component of developing current, being either of current flowing through a non-exposed portion of an image carrier during image formation, and current flowing through an exposed portion of the image carrier. When an anomaly is detected in any image forming unit, the control unit inhibits use of the image forming unit, and resets the development conditions to evenly divide an image density among the usable image forming units.
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公开(公告)号：US11067923B2
公开(公告)日：2021-07-20
申请号：US16984788
申请日：2020-08-04
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Takahiro Okubo , Mitsuhiro Hashimoto , Kazuhiro Nakachi , Shiro Kaneko
Abstract: An image forming apparatus includes an image forming portion, a high-voltage generation circuit, a current detection portion and a control portion. The image forming portion includes an image carrying member, a charging device, an exposure device and a developing device which includes a developer carrying member for carrying a two-component developer. The control portion can perform a transfer memory prediction mode that includes a step of estimating, when a first reference image is formed, the level of occurrence of transfer memory based on the direct-current component of a development current flowing through the developer carrying member and a step of measuring, when the measured direct-current component of the development current is larger than a predetermined value, the amount of charge of the toner within the developing device and estimating the cause of occurrence of the transfer memory based on the measured amount of charge of the toner.
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