Printing apparatus, an amount of displacement calculating method, and a testing chart

    公开(公告)号:US11077690B2

    公开(公告)日:2021-08-03

    申请号:US15753875

    申请日:2016-09-20

    摘要: A printing apparatus of this invention scans with a tester a testing chart printed by a printing controller to acquire testing image data. A total amount of displacement calculator calculates an amount of displacement of a recording position including a direction of misregister as a total amount of displacement, based on a large amount of displacement determined by a large amount of displacement determiner, a direction of displacement detected by a direction of displacement detector, a shift amount corresponding to an amount of displacement detecting chart determined by an amount of displacement detecting chart determiner, and a peak position of the amount of displacement detecting chart determined by the amount of displacement detecting chart determining unit. Thus, since a total amount of displacement of the misregister can be calculated only by printing the testing chart on web paper WP, an amount of displacement of the misregister in the transport direction can be obtained easily in a short time.

    Printing apparatus and printing system for detecting print quality based upon a detected variation

    公开(公告)号:US11630613B2

    公开(公告)日:2023-04-18

    申请号:US17385534

    申请日:2021-07-26

    IPC分类号: G06F3/12

    摘要: A printing apparatus includes a head part, an encoder, a tension sensor, a head part temperature sensor, an edge sensor, an estimation part, a storage, and an output part. The estimation part estimates print quality in terms of a page printed by the head part on the basis of variation elements detected by the encoder, the tension sensor, the head part temperature sensor, and the edge sensor. The storage stores print quality information containing the printed page and the print quality estimated by the estimation part in association with each other. The output part outputs the print quality information to a display, a post-processing device, and a printer controller section.

    Printing apparatus, and a deviation amount calculating method therefor

    公开(公告)号:US11167547B2

    公开(公告)日:2021-11-09

    申请号:US16524957

    申请日:2019-07-29

    IPC分类号: B41J2/045 B41J2/21 B41J29/393

    摘要: A printing apparatus for printing on a printing medium transported includes the following elements. A print head including a plurality of print head modules, a printing controller for controlling printing of a testing chart by selecting a reference print head module to provide a reference for recording positions, causing the reference print head module to print a reference chart, and causing one of the print head modules shifted relative to the reference print head module to print a comparison chart, a scanner for acquiring testing image data, an image processor for creating an extract reference chart, creating an extract comparison chart, and creating a composite testing chart by superimposing these charts, and a deviation amount calculator for calculating a deviation amount based on the composite testing chart.

    Nozzle operating situation checking method for inkjet printing apparatus, an inkjet printing apparatus, and a program thereof

    公开(公告)号:US10800193B2

    公开(公告)日:2020-10-13

    申请号:US16279130

    申请日:2019-02-19

    IPC分类号: B41J29/393 B41J2/16 B41J2/165

    摘要: A nozzle operating situation checking method for inkjet printing apparatus which perform printing by dispensing ink droplets from a printing head having a plurality of nozzles arranged in a transverse direction of a printing medium. The method includes the following steps: a step of printing a testing chart; a step of reading the testing chart downstream of the printing head; a step of extracting grid boxes; a step of deriving a standard width from width sizes; a step of detecting a box having a width size equal to or larger than a corrected standard width by comparing the width sizes of the respective boxes with the corrected standard width; and a step of determining that a missing nozzle exists upon detection of the box having a width size equal to or larger than the corrected standard width.

    Printing apparatus
    7.
    发明授权
    Printing apparatus 有权
    印刷装置

    公开(公告)号:US09452603B1

    公开(公告)日:2016-09-27

    申请号:US15076417

    申请日:2016-03-21

    IPC分类号: B41J2/045

    摘要: Disclosed is a printing apparatus that performs printing onto a print medium including a transporting device that transports a print medium, a plurality of printing heads, a photographing unit that photographs the print medium, a shift detecting chart forming device, and a correcting device. The shift detecting chart forming device forms a shift detecting chart having a first line segment group consisting of first line segments that are printed onto the print medium at given intervals in an orthogonal direction with respect to the transportation direction with a reference printing head, and a second line segment group formed along the first line segment group, and consisting of second line segments that are printed with a subsequent printing head. The correcting device corrects a printing timing with the subsequent printing head relative to the reference printing head in accordance with a density variation of the photographed shift detecting chart.

    摘要翻译: 公开了一种打印装置,其对包括传送打印介质的传送装置,多个打印头,拍摄打印介质的拍摄单元,移动检测图形成装置和校正装置的打印介质进行打印。 移位检测图形形成装置形成移位检测图,该移动检测图形具有第一线段组,该第一线段组由以参考打印头相对于运送方向在垂直方向上以给定间隔以给定间隔打印到打印介质上的第一线段组成, 第二线段组沿着第一线段组形成,并由随后的打印头打印的第二线段组成。 校正装置根据拍摄的移位检测图的浓度变化校正随后的打印头相对于基准打印头的打印定时。