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公开(公告)号：WO2021080559A1
公开(公告)日：2021-04-29
申请号：PCT/US2019/057266
申请日：2019-10-21
摘要： Example implementations relate to substrate porosity determination. Some examples refer to a substrate porosity determination comprising an image capture device a controller to obtain a reference image by the image capture device; obtain a measurement image after a printing operation has been performed on a substrate located over the image capture device; compare the reference image and the measurement image- determine whether the substrate is porous based on the comparison; and determine a print parameter based on the determination of whether the substrate is porous.
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公开(公告)号：WO2019240823A1
公开(公告)日：2019-12-19
申请号：PCT/US2018/037871
申请日：2018-06-15
摘要： In an example, there is provided a method and apparatus for generating a print output file, the method comprising receiving at least one image to be printed, determining a printing area corresponding to a region containing the at least one image to be printed and a non-printing area corresponding to a remaining region, providing a spit-on-page dot pattern limited to the non-printing area, and generating the print output file comprising the dot pattern and the at least one image.
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公开(公告)号：WO2019240809A1
公开(公告)日：2019-12-19
申请号：PCT/US2018/037729
申请日：2018-06-15
发明人： QIAN, Li
摘要： In an example there is provided a printing method comprising receiving first and second image data for first and second images to be printed on a substrate, determining first print data for the first image on the basis of the first image data and a white layer to be printed between the first image and second image, to achieve a nominal color profile for the first image; determining second print data for the second image on the basis of the first image data, second image data, the white layer and one or more properties of the substrate to achieve a nominal color profile for the second image; communicating the print data for the first and second images to a printing device to print the first and second images and white layer on the substrate.
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公开(公告)号：WO2019221714A1
公开(公告)日：2019-11-21
申请号：PCT/US2018/032802
申请日：2018-05-15
IPC分类号： B41J2/165
摘要： A method comprising: soaking a portion of a web in a printing device with printing liquid from a first print head (110) of the printing device; and wiping at least one nozzle of a second print head (120) in the printing device with the soaked portion of the web. The method provides a servicing method for print heads in the printing device.
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公开(公告)号：WO2020068074A1
公开(公告)日：2020-04-02
申请号：PCT/US2018/052961
申请日：2018-09-26
发明人： ROSELLO, Maxime , QIAN, Li , GASPARIN TALARN, Pere
IPC分类号： G06F3/12
摘要： An example of a color management module is disclosed. The color management module is to generate a mapping from an incoming color space to a printer color space by a color pipeline. In the generation of the mapping, the color pipeline is adjusted so that the mapping of a target color associated with a first composition further includes adding a quantity of a second composition to the mapping of the target color. The second composition comprises a lower visibility than the first composition.
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公开(公告)号：WO2020009688A1
公开(公告)日：2020-01-09
申请号：PCT/US2018/040613
申请日：2018-07-02
发明人： QIAN, Li
IPC分类号： B41J2/01 , B41J29/393
摘要： A media may comprise an alignment pattern on a surface of the media, the alignment pattern comprising a first set of marks of a first color, and a plurality of reference areas covering at least partially the first set of marks and the reference areas having a plurality of gaps. The reference areas may be a second colour, wherein the second colour is different to the first colour. The reference areas may be formed of an printing fluid such that the first set of marks underneath the reference areas are less detectable than one of the first set of marks in one of the plurality of gaps. The one of the first set of marks that is more detectable indicates a measure of alignment between the first set of marks and the reference areas.
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公开(公告)号：WO2019190473A1
公开(公告)日：2019-10-03
申请号：PCT/US2018/024482
申请日：2018-03-27
IPC分类号： B41J29/393
摘要： An example system is disclosed for measuring movement of print media, the system comprising first image capture apparatus to capture a first image of a portion of print media, and second image capture apparatus to capture second images of the portion of print media using an image capture parameter based on the first image and to measure movement of the print media using the second images.
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公开(公告)号：WO2021158206A1
公开(公告)日：2021-08-12
申请号：PCT/US2020/016398
申请日：2020-02-03
发明人： QIAN, Li , GUDZENCHUK, Anastasiia
摘要： Example implementations relate to a method and computer program for identifying a printing substance load for printing a job and a printer for implementing the method. The printing substance load for printing a job is identified by receiving calibration data indicating an achievable range of colors that are physically reproducible on a given printing surface for each of a plurality of different printing substance loads. A target range of colors to be printed is received by the printer for at least the print job. For each of the plurality of different printing substance loads, the achievable range of colors is compared with the target range of colors and an appropriate printing substance load for the print job is selected based on the comparison.
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公开(公告)号：WO2020185210A1
公开(公告)日：2020-09-17
申请号：PCT/US2019/021686
申请日：2019-03-11
摘要： A print apparatus is disclosed. In some examples, the print apparatus comprises a print head to deposit print agent onto a substrate; a detector to detect a fiducial; a first light source to back-illuminate the substrate, such that light from the first light source is to be detected by the detector through the substrate; and processing apparatus. The processing apparatus is to operate the print head to deposit print agent to form a first fiducial on a first side of the substrate, the first fiducial comprising a shape of a first colour and having a first dimension, and a background of print agent of a second, different colour, wherein the first dimension of the shape does not exceed a corresponding dimension of the background; operate the print head to deposit print agent to form a second fiducial on a second, opposite side of the substrate, the second fiducial comprising an inverted version of the shape of the first colour; operate the first light source to back-illuminate the substrate; operate the detector to detect the first and second fiducials; and determine whether the first fiducial is aligned with the second fiducial. A method and a machine-readable medium are also disclosed.
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公开(公告)号：WO2020106281A1
公开(公告)日：2020-05-28
申请号：PCT/US2018/062080
申请日：2018-11-20
发明人： QIAN, Li
IPC分类号： B41J2/175 , B41J29/393
摘要： An example of a printing apparatus is disclosed. The printing apparatus comprises a carriage comprising a printhead to spit a printing fluid, the carriage to move over a service zone and a print zone. The printing apparatus also comprises a controller to determine a spit location within the service zone associate with the printing fluid; and spit, during the service operation, an amount of the printing fluid at the spit location of the service zone associated to the printing fluid.
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