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From "Tres Finocchiaro (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PDFBOX-4435) Poor quality printing of PDF label
Date Mon, 21 Jan 2019 20:13:00 GMT

    [ https://issues.apache.org/jira/browse/PDFBOX-4435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16748196#comment-16748196

Tres Finocchiaro commented on PDFBOX-4435:

{quote}_A /ca 0 makes no sense - why not just leave off what you don't want to see?_ 
That fixed it.   Agreed and I've asked the OP to go back to the 3rd party and ask them to
correct this document.  This information is very helpful.

{quote}_I can't just drop stuff under the table because I suspect it will result in rasterization,
people couldl get wrong prints._

Agreed, I just fear this problem will keep coming back.  The quality is so drastically affected,
a workaround would help.

{quote}_That's java that does this._

I don't know the details on this but I assume it's not a "bug"?  Our users usually want
to avoid rasterization at all costs for reasons mentioned previously and anything to help
that out (upstream bug report with oracle or downstream workaround from PDFBOX) would certainly
help.  At this point, we'd even be open to scraping the PDF content ourselves for "bad" objects,
but I wouldn't even know where to start looking.


> Poor quality printing of PDF label
> ----------------------------------
>                 Key: PDFBOX-4435
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4435
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Rendering
>    Affects Versions: 2.0.3, 2.0.13, 2.0.14
>         Environment: Lubuntu 16.04, GK420d printer, CL-S400DT(Z) printer
>            Reporter: David Hancock
>            Priority: Major
>             Fix For: 2.0.14, 3.0.0 PDFBox
>         Attachments: before_after.png, comparison.png, label-pdfbox-1-8.jpg, label-pdfbox-2-0.jpg,
label.pdf, label.png
> Hello,
> I'm experiencing poor quality printing of PDF courier labels with PDFBox when printing
from the command line with the following command:
> {noformat}
> java -jar pdfbox-app-*.jar PrintPDF label.pdf
> {noformat}
> This makes scanning the QR code on these labels troublesome.
> I've tried versions 2.0.3, 2.0.13, 2.0.14 (SNAPSHOT) and all produce the same quality
issue. Interestingly version 1.8.16 does not appear to suffer from this issue.
> I have tried 2 different thermal printers, a GK420d and a CITIZEN CL-S400DT(Z) and both
output the same.
> When printing the label directly from the GNOME document viewer (Evince) the label prints
clearly on both printers.
> Please find examples of these labels attached.
> Can anything be done to prevent these quality issues?
> Thanks,
> David

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