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公开(公告)号：US20220210277A1
公开(公告)日：2022-06-30
申请号：US17563381
申请日：2021-12-28
Applicant: KYOCERA Document Solutions Inc.
Inventor： Rui HAMABE , Kazunori TANAKA , Kanako MORIMOTO , Takuya MIYAMOTO , Koji SATO
Abstract: The image processing apparatus includes: an abnormality detection unit configured to detect one or more abnormalities included in a target image and an abnormality exclusion processing unit configured to exclude a specific abnormality from the detected one or more abnormalities. In a case in which a detection area of a certain abnormality among the detected one or more abnormalities and a detection area of another abnormality overlap with each other and a type of the certain abnormality and a type of the another abnormality are different from each other, when brightness information of one of the certain abnormality and the another abnormality satisfies a specific condition, the abnormality exclusion processing unit excludes the one of the certain abnormality and the another abnormality from the detected one or more abnormalities.
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12.发明申请公开(公告)号：US20220004116A1
公开(公告)日：2022-01-06
申请号：US17362948
申请日：2021-06-29
Applicant: KYOCERA Document Solutions Inc.
Inventor： Yoshihiro YAMAGISHI , Tamotsu SHIMIZU , Kazunori TANAKA
Abstract: An image forming apparatus includes an image carrier, a charging device, a developing device, a developing power source, a current measuring device, and a processor. On a surface of the image carrier, an electrostatic latent image is formed. The charging device electrically charges the image carrier. The developing device forms a toner image, by supplying toner to the image carrier and developing the electrostatic latent image formed on the image carrier. The developing power source applies a predetermined bias voltage to the developing device. The current measuring device measures a developing current flowing in the developing device. The processor acts, by executing a control program, as a calculator that calculates a surface potential of the image carrier, on a basis of the developing current measured by the measuring device.
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公开(公告)号：US20210263442A1
公开(公告)日：2021-08-26
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：US20210240102A1
公开(公告)日：2021-08-05
申请号：US17165370
申请日：2021-02-02
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori TANAKA , Kanako MORIMOTO , Tamotsu SHIMIZU , Kenichi TAMAKI
Abstract: An image forming apparatus includes a toner charge amount predictor, a toner developing resistance calculator, and a determiner. The toner developing resistance calculator calculates a toner developing resistance on the basis of a bias voltage applied to a developing device and a measured developing current by dividing a value of the bias voltage by a value of the developing current when a developing device develops an electrostatic latent image formed on the surface of an image carrier to form a toner image. The toner charge amount predictor predicts a toner charge amount of a toner which is supplied to the image carrier by the developing device on the basis of a density of the toner image and the developing current. The determiner determines a state of the developing device on the basis of the toner charge amount and the toner developing resistance.
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Patent Agency Ranking
公开(公告)号：US20140240728A1
公开(公告)日：2014-08-28
申请号：US14189912
申请日：2014-02-25
Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
Inventor： Kazunori TANAKA
CPC classification number: H04N1/6058 , G06K15/1878 , H04N1/6022
Abstract: An image forming apparatus performs image formation of a target image with the use of a first color gamut as a standard color gamut for image formation. The image forming apparatus includes a storage section, a color conversion section, and an image forming section. The storage section stores a color expansion table indicating a second color gamut wider than the first color gamut. The color conversion section converts, when a color in the target image is present outside the first color gamut, a color value of the color in the target image to a color value of a coloring material used for image formation on the basis of the color expansion table. The image forming section performs image formation of the target image on the basis of the color value of the coloring material.
Abstract translation: 图像形成装置利用第一色域作为用于图像形成的标准色域来执行目标图像的图像形成。 图像形成装置包括存储部，颜色转换部和图像形成部。 存储部存储指示比第一色域宽的第二色域的色彩扩展表。 当目标图像中的颜色存在于第一色域之外时，颜色转换部分将目标图像中的颜色的颜色值基于颜色扩展用于图像形成的着色材料的颜色值 表。 图像形成部根据着色材料的颜色值进行目标图像的图像形成。
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公开(公告)号：US20230034012A1
公开(公告)日：2023-02-02
申请号：US17873351
申请日：2022-07-26
Applicant: KYOCERA Document Solutions Inc,
Inventor： Koji SATO , Kanako MORIMOTO , Rui HAMABE , Kazunori TANAKA , Takuya MIYAMOTO
IPC: G06F16/93 , G06F16/9035 , G06F16/9038
Abstract: A vector generation unit derives a reference feature vector and a document feature vector. A feature quantity extraction unit performs a dimensionality reduction process on the reference feature vector and the document feature vector so as to set a dimensional value as a first feature quantity and derives a cosine similarity between the reference feature vector and the document feature vector as a second feature quantity. A grid division unit classifies documents into first partial regions obtained by dividing a feature quantity space of the first feature quantity, and classifies the documents into second partial regions obtained by dividing a range of the second feature quantity. A training data extraction unit selects, for each combination of a first partial region and a second partial region, a document classified in both the partial regions and sets documents selected with respect to all combinations as training data.
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公开(公告)号：US20230026905A1
公开(公告)日：2023-01-26
申请号：US17858446
申请日：2022-07-06
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu SHIMIZU , Kazunori TANAKA , Yasuhiro TAUCHI
IPC: G03G15/00
Abstract: An image forming apparatus includes an amorphous silicon photosensitive member, a developing device including a developer carrying member that carries a two-component developer, and a control portion. When a potential difference V0−Vdc between the photosensitive member and the developer carrying member has a first potential difference at which the toner is moved from the developer carrying member to the photosensitive member and a second potential difference at which the toner is moved from the photosensitive member to the developer carrying member, the control portion adjusts V0 or Vdc so that the first potential difference and the second potential difference are equal in value and opposite in polarity, and a first development current |Ia| that flows at the first potential difference and a second development current |Ib| that flows at the second potential difference satisfy 1.9×10−2≥|Ib|/N≥5.7×103 [μA/mm].
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公开(公告)号：US20230019917A1
公开(公告)日：2023-01-19
申请号：US17812097
申请日：2022-07-12
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu SHIMIZU , Yoshihiro YAMAGISHI , Kazunori TANAKA
Abstract: An image forming apparatus includes image forming units. A controller includes an execution section, a measurement section, and a prediction section. The execution section controls execution of a developer refresh operation in which toner is ejected from a developer bearing member to an image bearing member so that a specific image forming unit replenishes a development device with the toner from the developer bearing member. The measurement section measures respective surface potentials of the image bearing members included in other image forming units while the specific image forming unit is executing the developer refresh operation. The prediction section uses measurement results of the respective surface potentials of the image bearing members included in the other image forming units for a prediction on the surface potential of the image bearing member included in the specific image forming unit.
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公开(公告)号：US20210302859A1
公开(公告)日：2021-09-30
申请号：US17210901
申请日：2021-03-24
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori TANAKA , Yoshihiro YAMAGISHI , Tamotsu SHIMIZU
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 prescribed bias voltage to the development device; and a calculating section which calculates a surface potential of the photosensitive drum based on a development current flowing in the development device. The calculating section calculates, as the surface potential, a bias voltage at which a non-charging development current that flows in the development device in an uncharged state in which the charger has not charged the photosensitive drum is equal to a charging development current that flows in the development device in a charged state in which the charger has charged the photosensitive drum.
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