When I import PDF, the PDF file is converted to a low-resolution image (96 ppi).
This resolution value is currently hardcoded in vcl/source/filter/ipdf/pdfread.cxx.
Need to adjust the resolution of image that was converted.
This low-resolution image is printed.
It is very long and unproductive to use third-party software to convert PDF to high-resolution image.
1. (if a pdf file is a vector) - Import PDF file into DRAW, then copy to WRITER.
2. (for any pdf) - Export the WRITER document with an imported PDF as PDF file. In this case, the WRITER reused the original PDF.
Created attachment 146679 [details]
A sample vector PDF tor repro steps
Original report (also the source of the PDF): 
Steps to reproduce:
1. Insert the attached PDF into a new text document using Insert->Image.
2. Print the resulting document.
3. Print the original PDF using a PDF reader.
4. Compare the resolution.
5. In the text document from step 2, use Crop to only make some circle with number visible
6. Stretch the result to whole page
the quality of printout on step 3 is the same as on step 4; step 6 results in a smooth giant circle (PDF being a vector one)
the printout from step 3 is much lower resolution compared to step 4; step 6 gives a highly-pixelated image.
Reproducible with Version: 126.96.36.199 (x64)
Build ID: 86daf60bf00efa86ad547e59e09d6bb77c699acb
CPU threads: 12; OS: Windows 10.0; UI render: default;
Locale: ru-RU (ru_RU); Calc: group threaded
IMO, it would be great if (1) the resolution of the generated image for the imported PDF fitted the output device (-> it would regenerate for each output device, e.g., on print); and (2) it would auto-regenerate to produce the desired result upon object manipulations, like scaling.
*** This bug has been marked as a duplicate of bug 115811 ***