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180 条记录 (耗时 0.019 秒)

    METHOD FOR CALIBRATING AND CONVERTING CMYK COLOURS
    21.
    发明公开
    METHOD FOR CALIBRATING AND CONVERTING CMYK COLOURS 审中-公开

    公开(公告)号：EP3742716A1

    公开(公告)日：2020-11-25

    申请号：EP19176488.5

    申请日：2019-05-24

    申请人： Canon Production Printing Holding B.V.

    发明人： LUTTMER, Maurice L. M.

    IPC分类号： H04N1/60

    摘要： A method for calibrating and converting colours of a digital image into printer specific colorant control values is disclosed. This method comprises the steps of calibrating a specific printer of a printer type according to a printer type specific procedure, wherein for each colorant separately a one-dimensional relationship between a printer tone value and a colorant control value is established; profiling the printer type to establish an output profile that defines a relationship between colour values in a profile connecting colour space and the printer tone values; deriving from the input profile and the output profile a one-dimensional relationship between a black channel and the black printer tone value of the printer; determining if an image colour value is to be converted either by using the profiles or by using the one-dimensional relation; converting the image colour value and subsequently using the printer calibration relations to obtain the colorant control values. This procedure enables the use of G7 colours in a printer that is limited in its amount of colorant that can be applied locally.

    A METHOD FOR USING A PRINT MEDIUM FOR A PRINT JOB IN A PRINT SYSTEM
    26.
    发明公开
    A METHOD FOR USING A PRINT MEDIUM FOR A PRINT JOB IN A PRINT SYSTEM 审中-公开

    公开(公告)号：EP3683064A1

    公开(公告)日：2020-07-22

    申请号：EP19152123.6

    申请日：2019-01-16

    申请人： Canon Production Printing Holding B.V.

    发明人： VAN VLIEMBERGEN, Eduardus J. W.

    IPC分类号： B41J3/46

    摘要： The invention relates to a method for profiling a print medium for use in a printing system configured to print on profiled print media. The method comprises the steps of receiving a print job for printing on a first print medium, retrieving a two-dimensional media print mode table (300) for the first print medium, investigating if media print modes (330) in the two-dimensional media print mode table (300) for the first print medium which have a conditional suitability for printing the print job, and modifying the two-dimensional media print mode table (300) for the first print medium based on the investigation in the previous step. A user interface displays the modified two-dimensional media print mode table for the print medium.

    SHEET TRANSPORT APPARATUS FOR AN INKJET SHEET PRINTER
    27.
    发明公开
    SHEET TRANSPORT APPARATUS FOR AN INKJET SHEET PRINTER 审中-公开

    公开(公告)号：EP3636568A1

    公开(公告)日：2020-04-15

    申请号：EP18199356.9

    申请日：2018-10-09

    申请人： Canon Production Printing Holding B.V.

    发明人： NELLEN, Wilhelmus H.J. ,  DU BUF, Gerrit P.J. ,  KUYPERS, Hermanus M.

    IPC分类号： B65H5/22 ,  B41J11/00

    摘要： The present invention provides a low costs sheet transport apparatus comprising an endless air permeable belt (101). An endless protrusion (102) is secured onto the belt and extending a predetermined height out of the surface of the belt. A plurality of rollers (110-113) comprising a driving roller (110) driveable by means of an actuator (122) and at least one support roller (111-113) positioned with respect to the driving roller to tension the belt over the plurality of rollers, such that a rotation of the driving roller moves the belt in a transport direction (D) is provided. At least one of the plurality of rollers comprises an endless recess (115) dimensioned to receive the protrusion, such that the protrusion is substantially prevented from transferring driving forces in the transport direction from the plurality of rollers to the belt. The protrusion is suspended within the recess such that it is prevented from transferring forces in the transport direction to belt.