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公开(公告)号：US20230384989A1
公开(公告)日：2023-11-30
申请号：US18031578
申请日：2021-12-22
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori TANAKA , Takuya MIYAMOTO , Koji SATO , Rui HAMABE , Kanako MORIMOTO
CPC classification number: G06F3/121 , G06T7/0004 , G06V10/44 , G06V20/50 , G06V10/7715 , G06T7/90 , G06V10/764 , G06F3/1208 , G06F3/1234 , G06V10/20 , G06T2207/10024 , G06T2207/30144
Abstract: An object of the present invention is to determine the cause of an image defect that occurs in an image forming device with high accuracy while suppressing the amount of calculation at a processor. A processor (80) determines the cause of an image defect on the basis of a test image read from an output sheet of an image forming device (2). The processor (80) generates a plurality of feature images by executing a feature extraction process on the test image. Further, the processor (80) uses each of the plurality of feature images as an input image and determines which of a plurality of cause candidates corresponding to the image defect the input image corresponds to by pattern recognition of the input image.
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公开(公告)号：US20220254003A1
公开(公告)日：2022-08-11
申请号：US17597804
申请日：2020-07-17
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori TANAKA
Abstract: Storage (24) stores therein a teacher model (54) that is a target image (50) with a teacher annotation (52), which specifies the target image (50), assigned thereto. An inferring section (32) assigns based on the teacher model (54) an inferred annotation (82) to an inspection image (80) belonging to the same category to which the target image (50) belongs. The inferred annotation (82) is a result of inference from the inspection image (80) based on the teacher model (54). An aiding section (34) aids a human to determine whether or not the inferred annotation (82) specifies the inspection image (80). A correcting section (36) generates a corrected model (86) in a manner to add a corrected annotation (84) to the inferred annotation (82) so that the inspection image (80) is specified.
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公开(公告)号：US20220207853A1
公开(公告)日：2022-06-30
申请号：US17563355
申请日：2021-12-28
Applicant: KYOCERA Document Solutions Inc.
Inventor： Takuya MIYAMOTO , Kazunori TANAKA , Kanako MORIMOTO , Rui HAMABE , Naomichi HIGASHIYAMA
IPC: G06V10/422 , G06V10/77 , G06N20/00
Abstract: An image recognition method includes a feature amount extracting step of generating, from an input image, a base feature map group including a plurality of base feature maps; an inferring step of deriving a plurality of inference results using each of a plurality of machine-learned inference devices for a plurality of inference inputs based on the base feature map group; and an integrating step of integrating the plurality of inference results by a specific manner to derive a final inference result, where each of the plurality of inference inputs has some or all base feature maps of the plurality of base feature maps, and each of the plurality of inference inputs has the some or all base feature maps that are different in part or whole from the some or all base feature maps of another inference input in the plurality of inference inputs.
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4.发明申请公开(公告)号：US20220128925A1
公开(公告)日：2022-04-28
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：US20220091531A1
公开(公告)日：2022-03-24
申请号：US17474508
申请日：2021-09-14
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 transfer device, a development power supply, a current measurement device, and a processor. The development power supply applies a predetermined bias voltage to the developing device. The processor functions as a calculator and a controller. The calculator calculates a surface potential of the image carrier based on the development current measured by the current measurement device. The controller controls the charging device, the developing device, the transfer device, and the development power supply. The controller sets a tentative transfer current to be flowed through the transfer device while the calculator calculates the surface potential.
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Patent Agency Ranking
公开(公告)号：US20210302869A1
公开(公告)日：2021-09-30
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：US20210302868A1
公开(公告)日：2021-09-30
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：US20210302870A1
公开(公告)日：2021-09-30
申请号：US17210395
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 that develops an electrostatic latent image formed on a photosensitive drum into a toner image; a charger that charges the photosensitive drum; a development power supply that applies a prescribed bias voltage to the development device; an electric current measuring section that measures a development current flowing in the development device; and a calculating section that calculates a surface potential of the photosensitive drum based on the development current. The development device sequentially forms a plurality of image formation toner images on respective sheets of a recording medium. The image formation toner images each are a toner image for image formation. The electric current measuring section measures the development current in a period during which the image formation toner images are not formed.
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公开(公告)号：US20200175672A1
公开(公告)日：2020-06-04
申请号：US16692275
申请日：2019-11-22
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori TANAKA
Abstract: A learning model generating device includes a first image reading device and a first control device. The first control device includes a processor and functions, through the processor executing a first control program, as a first segmenter, a learning model generator, and a first compressor. The first segmenter segments each of images of training prints obtained by reading performed by the first image reading device. The learning model generator learns segmented images to generate a first learning model for use in inferring a type of an image defect. The first compressor compresses each of the images of the training prints. The first segmenter segments each of compressed images obtained by compression performed by the first compressor. The learning model generator learns compressed and segmented images to generate a second learning model for use in inferring a type of an image defect.
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公开(公告)号：US20230260102A1
公开(公告)日：2023-08-17
申请号：US18031585
申请日：2021-12-22
Applicant: KYOCERA Document Solutions Inc.
Inventor： Takuya MIYAMOTO , Kazunori TANAKA , Kanako MORIMOTO , Koji SATO , Rui HAMABE
CPC classification number: G06T7/0008 , G06T5/20 , G06T9/00 , G06V10/25 , G06V10/751 , G06T7/90 , G06V10/764 , G06T2207/10024 , G06T2207/20192 , G06T2207/30144
Abstract: An object of the present invention is to extract image defects from a test image for each type by a simple process. A processor (80) generates a first preprocessed image and a second preprocessed image by executing a main filter process with each of a horizontal direction and a vertical direction of the test image used as a processing direction. The main filter process is a process of converting the pixel value of each pixel of interest sequentially selected from the test image into a converted value obtained by a process of emphasizing the difference between the pixel values of an area of interest and the pixel values of two adjacent areas. The processor (80) extracts, as the image defects, a first singular part that is present in the first preprocessed image and is not common to both images, a second singular part that is present in the second preprocessed image and is not common to both images, and a third singular part that is common to both images.
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