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41.发明授权Image forming apparatus configured for printing using color expansion table 有权图像形成装置，被配置为使用彩色扩展表进行打印公开(公告)号：US09083923B2
公开(公告)日：2015-07-14
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：US12141955B2
公开(公告)日：2024-11-12
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：US20230137796A1
公开(公告)日：2023-05-04
申请号：US18050796
申请日：2022-10-28
Applicant: KYOCERA Document Solutions Inc.
Inventor： Yoshihiro Yamagishi , Tamotsu Shimizu , Kazunori Tanaka , Ryota Okui , Kazuhiro Nakachi
IPC: G03G15/00
Abstract: An image forming apparatus includes an image-carrying member, a first acquisition processing portion, and a second acquisition processing portion. An electrostatic latent image is formed on the image-carrying member. The first acquisition processing portion acquires the potential value of the image-carrying member. The second acquisition processing portion acquires the temperature value of the image-carrying member based on the potential value of the image-carrying member acquired by the first acquisition processing portion.
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44.发明授权公开(公告)号：US11556074B2
公开(公告)日：2023-01-17
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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公开(公告)号：US11503167B2
公开(公告)日：2022-11-15
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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Patent Agency Ranking
46.发明授权公开(公告)号：US11487218B2
公开(公告)日：2022-11-01
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：US11435677B2
公开(公告)日：2022-09-06
申请号：US17210390
申请日：2021-03-23
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 bias voltage to the development device; a calculating section which calculates a surface potential of the photosensitive drum based on a development current flowing in the development device; and an estimating section which estimates a fogging toner amount. The fogging toner amount is an amount of toner moved due to fogging. When the fogging toner amount estimated by the estimating section is less than a prescribed threshold, the calculating section calculates a value of the bias voltage at which the development current stops flowing as the surface potential.
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公开(公告)号：US20220210293A1
公开(公告)日：2022-06-30
申请号：US17558250
申请日：2021-12-21
Applicant: KYOCERA Document Solutions Inc.
Inventor： Koji Sato , Kazunori Tanaka , Takuya Miyamoto , Kanako Morimoto , Rui Hamabe
Abstract: A processor identifies a specific part composed of a plurality of significant pixels in a mixed-color test image. Furthermore, the processor identifies a color vector. The color vector represents a vector in a color space from one of a color of the specific part in the mixed-color test image and a color of a reference area including a periphery of the specific part to the other. Furthermore, the processor determines which of a plurality of image creating portions of an image forming device corresponding to a plurality of developing colors, is a cause of an image defect, based on the color vector identified from the mixed-color test image.
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公开(公告)号：US20220207703A1
公开(公告)日：2022-06-30
申请号：US17558411
申请日：2021-12-21
Applicant: KYOCERA Document Solutions Inc.
Inventor： Rui Hamabe , Kazunori Tanaka , Takuya Miyamoto , Kanako Morimoto , Koji Sato
IPC: G06T7/00 , G06T7/90 , G06T7/13 , G06V10/22 , G06V10/24 , G06V10/36 , G06V10/44 , G06V10/56 , G06V10/98 , G03G15/01 , G03G15/00
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 extracts a vertical stripe part extending along a sub scanning direction in the test image. Furthermore, the processor determines which of predetermined two types of cause candidates is a cause of the vertical stripe part, based on a distribution of a pixel value sequence along a main scanning direction that crosses the sub scanning direction, in a target part including the vertical stripe part in the test image.
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公开(公告)号：US11143980B2
公开(公告)日：2021-10-12
申请号：US17178548
申请日：2021-02-18
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Kanako Morimoto , Kazunori Tanaka , Kenichi Tamaki
Abstract: An image forming apparatus includes a plurality of image forming units, a developing voltage power supply, a density detection device, a current detection unit, and a control unit. The plurality of image forming units form an image 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 a developing device, based on a toner charge amount calculated based on a DC component of developing current when a reference image is formed on an image carrier by each of the developing devices and a density of the reference image. When an anomaly is detected in any of the developing devices, the control unit inhibits use of the image forming unit including the developing device, and resets the development conditions to evenly divide the image density among the usable image forming units.
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