IMAGE FORMING APPARATUS AND STORAGE MEDIUM

    公开(公告)号:US20240406335A1

    公开(公告)日:2024-12-05

    申请号:US18675334

    申请日:2024-05-28

    Inventor: Mieko MITA

    Abstract: An image forming apparatus including a hardware processor and an image former that forms a measurement pattern on a recording medium under control of the hardware processor, wherein the hardware processor acquires image data obtained by reading a recording medium surface on which the measurement pattern is formed, calculates gradation characteristics at positions of correction points arranged along a direction orthogonal to a conveyance direction of the recording medium on a basis of the acquired image data, and corrects density unevenness of the measurement pattern in the direction orthogonal to the conveyance direction by correction values at the positions of the correction points calculated on the basis of the gradation characteristics, and the measurement pattern includes a first image having a maximum gradation value, second images that are adjacent to the first image on an upstream side in the conveyance direction and whose gradation values change stepwise and in ascending order in the conveyance direction, and third images that are adjacent to the first image on a downstream side in the conveyance direction and whose gradation values change stepwise and in descending order in the conveyance direction.

    Color image forming apparatus determining an ink correction amount for reducing ink bleeding, and color image forming method

    公开(公告)号:US12160554B2

    公开(公告)日:2024-12-03

    申请号:US18308120

    申请日:2023-04-27

    Abstract: A color image forming apparatus includes a controller implemented using one or more hardware processors, wherein the controller: detects a line area; detects a background area adjacent to the line area; detects first one or more ink colors of first one or more inks to be used in the line area; detects second one or more ink colors of second one or more inks to be used in the background area; compares the first one or more ink colors and the second one or more ink colors to identify a combination pattern of the first one or more ink colors and the second one or more ink colors; and determines whether to correct amounts of the first one or more inks and amounts of the second one or more inks, based on the identified combination pattern.

    IMAGE FORMING APPARATUS AND IMAGE INSPECTION METHOD

    公开(公告)号:US20240362768A1

    公开(公告)日:2024-10-31

    申请号:US18638929

    申请日:2024-04-18

    Inventor: Tatsuro OOISHI

    CPC classification number: G06T7/0008 G03G15/5054 G03G15/5062

    Abstract: According to an image forming apparatus, it is possible to sort a defective product without requiring time and effort of a user and without increasing or decreasing cost. The image forming apparatus includes: a sheet conveyer having a cylindrical shape that conveys a sheet; an image former that forms an image on the sheet conveyed by the sheet conveyer; an image reader that generates a read image of a printed product which is the sheet on which the image has been formed by the image former; and a hardware processor, in which the hardware processor inspects for presence or absence of a defect in the printed product based on the read image, and causes the printed product being inspected to rotate on an outer peripheral portion of the sheet conveyer without ejecting the printed product being inspected from the apparatus during start to end of inspection of the printed product.

Patent Agency Ranking