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公开(公告)号：US20230137743A1
公开(公告)日：2023-05-04
申请号：US18050790
申请日：2022-10-28
Applicant: KYOCERA Document Solutions Inc.
Inventor： Ryota Okui , Yoshihiro Yamagishi , Tamotsu Shimizu , Kazuhiro Nakachi , Kazunori Tanaka
Abstract: An image forming apparatus includes first, second, and third acquisition processing portions. The first acquisition processing portion acquires the potential value of a charged area, charged by the charging member, on the image-carrying member. The second acquisition processing portion acquires a state value regarding the state of a surface layer of the image-carrying member based on the potential value of the charged area acquired by the first acquisition processing portion and the current value of a charging current flowing through the charging member during formation of the charged area. The third acquisition processing portion acquires the electrical resistance value of the transfer member based on the state value acquired by the second acquisition processing portion, the voltage value of a transfer voltage applied to the transfer member, and the current value of a transfer current flowing through the charged area in response to application of the transfer voltage.
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公开(公告)号：US20230137321A1
公开(公告)日：2023-05-04
申请号：US18050783
申请日：2022-10-28
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori Tanaka , Yoshihiro Yamagishi , Tamotsu Shimizu , Kazuhiro Nakachi , Ryota Okui
Abstract: An image forming apparatus includes a developing member, a first detection processing portion, and an acquisition processing portion. The developing member conveys developer to a facing portion between the developing member and the image-carrying member. The first detection processing portion detects a first development current for each of a plurality of specific voltages with different DC voltage values applied to the developing member, the first development current flowing, in response to application of the specific voltages, through the facing portion including the developer and a specific exposed area, formed by the light emitting portion, on the image-carrying member. The acquisition processing portion acquires a potential value of the specific exposed area based on the DC voltage values of the specific voltages and current values of the first development current, detected by the first detection processing portion, corresponding to the respective specific voltages.
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公开(公告)号：US11520267B2
公开(公告)日：2022-12-06
申请号：US17558505
申请日：2021-12-21
Applicant: KYOCERA Document Solutions Inc.
Inventor： Takuya Miyamoto , Kazunori Tanaka , Kanako Morimoto , Koji Sato , Rui Hamabe
IPC: G03G15/00
Abstract: A processor generates an extraction image by extracting, from a test image, a target specific part that is a horizontal stripe extending in a horizontal direction or a noise point. The processor derives a vertical data sequence from a target area in the extraction image and converts the vertical data sequence to primary conversion data of a frequency domain. The processor converts, to secondary conversion data of a space domain, correction data that is obtained by removing, from the primary conversion data, data of frequency bands other than a particular frequency band corresponding to a target specific part that was determined as having periodicities. The processor classifies the target specific parts into periodic specific part and non-periodic specific part by comparing positions of the target specific parts with a peak position in a waveform represented by the secondary conversion data.
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公开(公告)号：US20220210278A1
公开(公告)日：2022-06-30
申请号：US17555928
申请日：2021-12-20
Applicant: KYOCERA Document Solutions Inc.
Inventor： RUI HAMABE , Kazunori Tanaka , Kanako Morimoto , Takuya Miyamoto , Koji Sato
IPC: H04N1/00
Abstract: An image processing apparatus includes an anomaly detecting unit configured to detect anomalies included in a target image; and an anomaly exclusion processing unit configured to exclude a specific anomaly among the detected anomalies. Further, the anomaly exclusion processing unit excludes one of an anomaly and another anomaly among the detected anomalies, if (a) a detection area of the anomaly, a detection area of the other anomaly, and an overlapping area of the detection areas of the anomaly and the other anomaly satisfy a predetermined condition and (b) a type of the anomaly and a type of the other anomaly are different from each other.
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公开(公告)号：US20220207705A1
公开(公告)日：2022-06-30
申请号：US17558496
申请日：2021-12-21
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kanako Morimoto , Kazunori Tanaka , Koji Sato , Takuya Miyamoto , Rui Hamabe
Abstract: A processor determines an image defect in a test image obtained through an image reading process performed on an output sheet output by an image forming apparatus. The processor derives a vertical data string that is composed of data about horizontal representative values serving as representative values of a plurality of pixel values in each line in a horizontal direction in the test image. Moreover, the processor determines the presence or absence of at least one periodicity set in advance in the vertical data string by performing frequency analysis on the vertical data string. Furthermore, the processor determines the occurrence or non-occurrence and the cause of periodic density unevenness serving as a type of the image defect according to the determination result on the periodicity.
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Patent Agency Ranking
公开(公告)号：US20220207702A1
公开(公告)日：2022-06-30
申请号：US17558350
申请日：2021-12-21
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori Tanaka , Kanako Morimoto , Takuya Miyamoto , Koji Sato , Rui Hamabe
Abstract: A processor determines a cause of an image defect based on a test image that is obtained through an image reading process performed on an output sheet output from an image forming device. The processor generates an extraction image by extracting, from the test image, a noise point that is a type of image defect. Furthermore, the processor determines a cause of the noise point by using at least one of, in the extraction image: an edge strength of the noise point; a degree of flatness of the noise point; and a pixel value distribution of a transverse pixel sequence that is a pixel sequence traversing the noise point.
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公开(公告)号：US20220207694A1
公开(公告)日：2022-06-30
申请号：US17555871
申请日：2021-12-20
Applicant: KYOCERA Document Solutions Inc.
Inventor： Rui Hamabe , Kazunori Tanaka , Kanako Morimoto , Takuya Miyamoto , Koji Sato
IPC: G06T7/00
Abstract: An image processing apparatus includes an anomaly detecting unit, and an anomaly unification processing unit. The anomaly detecting unit is configured to detect anomalies included in a target image. The anomaly unification processing unit is configured to unify specific anomalies among the detected anomalies. Further, if a type of an anomaly among the detected anomalies is the same as a type of another anomaly among the detected anomalies, the anomaly unification processing unit (a) determines whether the anomaly and the other anomaly should be unified or not on the basis of a relationship between a position of the anomaly and a position of the other anomaly, and (b) unifies the anomaly and the other anomaly if it is determined that the anomaly and the other anomaly should be unified.
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公开(公告)号：US20220206425A1
公开(公告)日：2022-06-30
申请号：US17558505
申请日：2021-12-21
Applicant: KYOCERA Document Solutions Inc.
Inventor： Takuya Miyamoto , Kazunori Tanaka , Kanako Morimoto , Koji Sato , Rui Hamabe
IPC: G03G15/00
Abstract: A processor generates an extraction image by extracting, from a test image, a target specific part that is a horizontal stripe extending in a horizontal direction or a noise point. The processor derives a vertical data sequence from a target area in the extraction image and converts the vertical data sequence to primary conversion data of a frequency domain. The processor converts, to secondary conversion data of a space domain, correction data that is obtained by removing, from the primary conversion data, data of frequency bands other than a particular frequency band corresponding to a target specific part that was determined as having periodicities. The processor classifies the target specific parts into periodic specific part and non-periodic specific part by comparing positions of the target specific parts with a peak position in a waveform represented by the secondary conversion data.
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公开(公告)号：US11131942B1
公开(公告)日：2021-09-28
申请号：US17210345
申请日：2021-03-23
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori Tanaka , Yoshihiro Yamagishi , Tamotsu Shimizu
IPC: G03G15/06
Abstract: An image forming apparatus includes: a development device which develops an electrostatic latent image formed on a photosensitive drum into a toner image; a charger which charges the photosensitive drum; a development power supply which applies a bias voltage to the development device; an electric current measuring section which measures a development current flowing in the development device; and a calculating section which calculates a surface potential of the photosensitive drum based on the development current. The charger applies charging biases to the photosensitive drum. The electric current measuring section measures a corresponding value of the development current for each development bias voltage applied to the development device. The calculating section calculates, per charging bias, a development bias voltage at which the development current stops flowing as the surface potential, and calculates a correspondence between the surface potential and the charging bias based on calculated values of the surface potential.
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公开(公告)号：US09736339B2
公开(公告)日：2017-08-15
申请号：US15073447
申请日：2016-03-17
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori Tanaka
CPC classification number: H04N1/6094 , G06K9/2018 , G06K9/2063 , H04N1/04 , H04N1/2323 , H04N1/608 , H04N1/626 , H04N2201/0094
Abstract: An image processing apparatus includes a fluorescence pixel detecting unit, a peripheral pixel analyzing unit, and an image processing unit. The fluorescence pixel detecting unit is configured to detect a fluorescence pixel that has a fluorescent color in a document image. The peripheral pixel analyzing unit is configured to detect consecutive non-fluorescence pixels with no fluorescent colors among peripheral pixels within a predetermined range from the detected fluorescence pixel. The consecutive non-fluorescence pixels is at least a predetermined number of consecutive pixels and has a color difference equal to or less than a predetermined value between one and another of the consecutive non-fluorescence pixels. The image processing unit is configured to perform an emphasizing process of improving visibility for the detected consecutive non-fluorescence pixels.
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