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https://issues.apache.org/jira/browse/PDFBOX-4380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16689720#comment-16689720
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Tilman Hausherr commented on PDFBOX-4380:
-----------------------------------------
You may ask "why ARGB? why not RGB?" because the patterns don't have a
background, the background is the page itself. For example, the page could have
an image, and then a grid pattern would be painted on top of it, but the image
would still be visible in the "holes" of the grid.
> PDF will only print rasterized on Windows
> -----------------------------------------
>
> Key: PDFBOX-4380
> URL: https://issues.apache.org/jira/browse/PDFBOX-4380
> Project: PDFBox
> Issue Type: Bug
> Components: Rendering
> Affects Versions: 2.0.12
> Environment: Windows 10 Pro x64
> macOS 10.14
> Reporter: Tres Finocchiaro
> Priority: Major
> Attachments: AWB_BM82266397503_unc.pdf, Screen Shot 2018-11-15 at
> 9.30.16 PM.png, Screen Shot 2018-11-15 at 9.30.32 PM.png, printpdf.pdf
>
>
> Near identical symptoms to PDFBOX-4123, but only on Windows.
> [This PDF|https://github.com/qzind/tray/files/2587736/AWB_BM82266397503.pdf]
> will only print rasterized. It looks fine in Adobe Reader, but once printed
> using PDFBOX, it will always print rasterized.
> PDF was created using Python weasyprint.
> Like PDFBOX-4123, I found a Transparency block inspecting the PDF raw
> contents. However the workaround provided in PDFBOX-4123 does not remedy the
> situation. Furthermore, the behavior is inconsistent between macOS and
> Windows.
> * Windows testing was performed using Java 8u191 and PDFCreator. Same
> behavior with Microsoft Print to PDF.
> * macOS testing was performed using Java 8u181 and Lisanet PDFwriter.
> Attachments:
> * Screen Shot 2018-11-15 at 9.30.16 PM.png - Actual results
> * Screen Shot 2018-11-15 at 9.30.32 PM.png - Desired results
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