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    Optical scanning device and image forming apparatus
    1.
    发明授权
    Optical scanning device and image forming apparatus 有权

    公开(公告)号：US11652946B2

    公开(公告)日：2023-05-16

    申请号：US17377011

    申请日：2021-07-15

    Applicant: KYOCERA Document Solutions Inc.

    Inventor： Takayuki Mashimo

    IPC: H04N1/028 ,  G03G15/043 ,  G02B26/12 ,  H04N1/024

    CPC classification number: H04N1/0283 ,  G02B26/122 ,  G03G15/043 ,  H04N1/024 ,  H04N1/02895

    Abstract: An optical scanning device includes a light source, a deflector, a random number generator, a selection part, a random number assignment part and an exposure control part. The light source includes a plurality of light emitting parts arranged in a predetermined direction at fixed intervals in a sub-scanning direction. The random number assignment part is configured to assign a random number sequence to each light emitting part constituting a set of target light emitting parts as an index for specifying a timing at which a light emitting time of the set of target light emitting parts is set to a correction value different from a reference value and to update the assignment of the random number sequence at a random number update period. The random number update period coincides with a scanning period of each light emitting part constituting the set of target light emitting parts.

    Image forming apparatus and toner amount calculating method
    2.
    发明授权
    Image forming apparatus and toner amount calculating method 有权

    公开(公告)号：US10514648B2

    公开(公告)日：2019-12-24

    申请号：US16123153

    申请日：2018-09-06

    Applicant: KYOCERA Document Solutions Inc.

    Inventor： Toshiaki Mutsuo ,  Hiroki Tanaka ,  Takayuki Mashimo

    IPC: G03G15/00 ,  G03G15/04 ,  G03G15/16 ,  G03G15/08

    Abstract: An exposure device irradiates a photoconductor with light on the basis of an exposure signal and thereby forms an electrostatic latent image. A toner amount calculating unit (a) determines a distribution pattern of the electrostatic latent image on the basis of the exposure signal, (b) determines an electric field variation level of a target pixel, (c) determines an electric field intensity of the target pixel on the basis of a value of the target pixel in the distribution pattern and the electric field variation level, and (d) determines a toner consumption amount corresponding to the electric field intensity. Further, using spatial filters independently of each other in a primary scanning direction and in a secondary scanning direction, the toner amount calculating unit determines the electric field variation level on the basis of (a) the distribution pattern or (b) the exposure signal.

    IMAGE FORMING APPARATUS AND TONER AMOUNT CALCULATING METHOD
    4.
    发明申请
    IMAGE FORMING APPARATUS AND TONER AMOUNT CALCULATING METHOD 审中-公开

    公开(公告)号：US20190079439A1

    公开(公告)日：2019-03-14

    申请号：US16123102

    申请日：2018-09-06

    Applicant: KYOCERA Document Solutions Inc.

    Inventor： Toshiaki Mutsuo ,  Hiroki Tanaka ,  Takayuki Mashimo

    IPC: G03G15/00 ,  G03G15/08 ,  G03G15/04 ,  G03G15/16

    Abstract: An exposure device irradiates a photoconductor with light on the basis of an exposure signal and thereby forms an electrostatic latent image. A toner amount calculating unit (a) determines a distribution pattern of the electrostatic latent image on the basis of the exposure signal, (b) determines an electric field variation level of a target pixel, (c) determines an electric field intensity of the target pixel on the basis of a value of the target pixel in the distribution pattern and the electric field variation level, and (d) determines a toner consumption amount corresponding to the electric field intensity. Further, the toner amount calculating unit limits the electric field variation level to an uppermost value or less, the uppermost value corresponding to a value of the target pixel in the distribution pattern of the electrostatic latent image.

    Image forming apparatus
    5.
    发明授权
    Image forming apparatus 有权

    公开(公告)号：US12038708B2

    公开(公告)日：2024-07-16

    申请号：US18323619

    申请日：2023-05-25

    Applicant: KYOCERA Document Solutions Inc.

    Inventor： Takayuki Mashimo

    IPC: G03G15/00 ,  G03G15/01 ,  G06K15/12

    CPC classification number: G03G15/50 ,  G03G15/0142 ,  G06K15/1219 ,  G06K15/129

    Abstract: Plural write control units independently control plural print mechanisms corresponding to plural toner colors. A controller stores a setting value for each page into a first memory area. Plural second memory areas respectively correspond to the plural write control units. Further, one write control unit among them transfers the setting value from the first memory area to the second memory area of this write control unit, and applies the setting value stored in the second memory area and causes the corresponding print mechanism to print a page image. Another write control unit among them transfers the setting value to the second memory area of this write control unit from the second memory area of another write control unit among them, and applies the setting value stored in the second memory area and causes the corresponding print mechanism to print a page image.

    IMAGE FORMING APPARATUS
    6.
    发明公开
    IMAGE FORMING APPARATUS 审中-公开

    公开(公告)号：US20230393509A1

    公开(公告)日：2023-12-07

    申请号：US18323619

    申请日：2023-05-25

    Applicant: KYOCERA Document Solutions Inc.

    Inventor： Takayuki Mashimo

    IPC: G03G15/00 ,  G06K15/12 ,  G03G15/01

    CPC classification number: G03G15/50 ,  G06K15/1219 ,  G06K15/129 ,  G03G15/0142

    Abstract: Plural write control units independently control plural print mechanisms corresponding to plural toner colors. A controller stores a setting value for each page into a first memory area. Plural second memory areas respectively correspond to the plural write control units. Further, one write control unit among them transfers the setting value from the first memory area to the second memory area of this write control unit, and applies the setting value stored in the second memory area and causes the corresponding print mechanism to print a page image. Another write control unit among them transfers the setting value to the second memory area of this write control unit from the second memory area of another write control unit among them, and applies the setting value stored in the second memory area and causes the corresponding print mechanism to print a page image.

    Image forming apparatus and toner amount calculating method
    7.
    发明授权
    Image forming apparatus and toner amount calculating method 有权

    公开(公告)号：US10558156B2

    公开(公告)日：2020-02-11

    申请号：US16123204

    申请日：2018-09-06

    Applicant: KYOCERA Document Solutions Inc.

    Inventor： Toshiaki Mutsuo ,  Hiroki Tanaka ,  Takayuki Mashimo

    IPC: G03G15/00 ,  G03G15/04 ,  G03G15/16 ,  G03G15/08

    Abstract: A base toner amount is determined without taking edge effect into account, and corresponds to a pixel value of image data for which gradation correction has not been performed. For the base toner amount, a first spatial filter process is performed corresponding to a laser profile of the exposure device. A second spatial filter process is performed for the base toner amount before or after the first spatial filter process and thereby an edge emphasis amount is determined corresponding to the edge effect. A limiter processing unit limits the edge emphasis amount to an uppermost value or less, and the uppermost value corresponds to the base toner amount after the first spatial filter process. A toner counter counts as a toner consumption amount a sum of the base toner amount after the first spatial filter process and the edge emphasis amount.

    Image forming apparatus and toner amount calculating method
    10.
    发明授权
    Image forming apparatus and toner amount calculating method 有权

    公开(公告)号：US10409210B2

    公开(公告)日：2019-09-10

    申请号：US16123173

    申请日：2018-09-06

    Applicant: KYOCERA Document Solutions Inc.

    Inventor： Toshiaki Mutsuo ,  Hiroki Tanaka ,  Takayuki Mashimo

    IPC: G03G15/00 ,  G03G15/04 ,  G03G15/16 ,  G03G15/08

    Abstract: An edge emphasis amount determining unit performs a spatial filter process and thereby determines an edge emphasis amount corresponding to edge effect. A first toner counter (a) counts a toner consumption amount including the edge emphasis amount for a non-block-edge pixel in a block as a unit of image processing, and (b) counts a toner consumption amount not including the edge emphasis amount for a block edge pixel in the block. A second toner counter counts a toner consumption amount not including the edge emphasis amount for the non-block-edge pixel and the block edge pixel. A toner consumption amount calculating unit calculates a toner consumption amount of the block on the basis of a difference between a toner counting value of the first toner counter and a toner counting value of the second toner counter.

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