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公开(公告)号：US11709899B2
公开(公告)日：2023-07-25
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: G06F16/00 , G06F16/93 , G06F16/9038 , G06F16/9035
CPC classification number: 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：US11630409B2
公开(公告)日：2023-04-18
申请号：US17558338
申请日：2021-12-21
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori Tanaka , Kanako Morimoto , Takuya Miyamoto , Koji Sato , Rui Hamabe
IPC: G03G15/00
Abstract: A processor selects a target sheet from a plurality of predetermined sheet candidates in accordance with selection information that is input via an input device. Furthermore, the processor derives feature information regarding a noise point from a target image that is obtained through an image reading process performed on an output sheet output from an image forming device, the noise point being a dot-like noise image included in the target image. Furthermore, the processor determines whether or not the noise point is a dot-like sheet noise by applying the feature information to a determination algorithm that corresponds to the target sheet, the sheet noise being included in a sheet of the output sheet itself, the determination algorithm being one of a plurality of determination algorithms that respectively correspond to the plurality of sheet candidates.
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23.发明授权公开(公告)号：US11592760B2
公开(公告)日：2023-02-28
申请号：US17507024
申请日：2021-10-21
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori Tanaka , Yoshihiro Yamagishi , Tamotsu Shimizu
Abstract: An image forming apparatus includes a developing device that forms a toner image, by developing an electrostatic latent image formed on a photoconductor drum, a charging device that electrically charges the photoconductor drum, a developing power source that applies a predetermined developing bias voltage to the developing device, and a calculation device that calculates a surface potential of the photoconductor drum, on a basis of the developing current flowing in the developing device. The developing power source applies the developing bias voltage in a plurality of levels, to the developing device. A current measurement device measures a developing current, with respect to the developing bias voltage of each level. The calculation device calculates the surface potential, on the basis of each developing current.
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公开(公告)号：US11463592B2
公开(公告)日：2022-10-04
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：US20220206424A1
公开(公告)日：2022-06-30
申请号：US17558338
申请日：2021-12-21
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori Tanaka , Kanako Morimoto , Takuya Miyamoto , Koji Sato , Rui Hamabe
IPC: G03G15/00
Abstract: A processor selects a target sheet from a plurality of predetermined sheet candidates in accordance with selection information that is input via an input device. Furthermore, the processor derives feature information regarding a noise point from a target image that is obtained through an image reading process performed on an output sheet output from an image forming device, the noise point being a dot-like noise image included in the target image. Furthermore, the processor determines whether or not the noise point is a dot-like sheet noise by applying the feature information to a determination algorithm that corresponds to the target sheet, the sheet noise being included in a sheet of the output sheet itself, the determination algorithm being one of a plurality of determination algorithms that respectively correspond to the plurality of sheet candidates.
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Patent Agency Ranking
公开(公告)号：US11307512B2
公开(公告)日：2022-04-19
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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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：US08995009B2
公开(公告)日：2015-03-31
申请号：US14073770
申请日：2013-11-06
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori Tanaka
CPC classification number: H04N1/54 , H04N1/6033
Abstract: A color conversion portion generates, when fluorescent color is not included in an image of document sheet, image data according to color coordinate system of a printing device for image of the document sheet, in predetermined color conversion mode, based on image data of read image, and, when a fluorescent color is included in an image of a document sheet, generates, for colors other than the fluorescent color, image data according to the color coordinate system of a printing device for the image of the document sheet, in the predetermined color conversion mode, based on image data of a read image, and generates, for the fluorescent color, image data according to the color coordinate system of the printing device for the image of the document sheet, based on the image data of the read image, by using a color value of a color patch corresponding to the recorded fluorescent color.
Abstract translation: 当根据读取图像的图像数据，在预定的颜色转换模式中，当文档图像的图像中不包括荧光颜色的图像数据时，根据用于图像的打印装置的颜色坐标系的图像数据产生颜色转换部分 并且当在文档片材的图像中包含荧光颜色时，根据用于文件片材的图像的打印装置的颜色坐标系，针对预定的图像生成针对荧光色以外的颜色的图像数据 颜色转换模式，基于读取图像的图像数据，并根据读取图像的图像数据生成根据用于文档图像的图像的打印装置的颜色坐标系的荧光颜色的图像数据 通过使用与记录的荧光颜色对应的色标的颜色值。
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公开(公告)号：US12038710B2
公开(公告)日：2024-07-16
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
CPC classification number: G03G15/553 , G03G15/0266 , G03G15/5037
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：US11693350B2
公开(公告)日：2023-07-04
申请号：US17858446
申请日：2022-07-06
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Kazunori Tanaka , Yasuhiro Tauchi
CPC classification number: G03G15/80
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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