Double edges in table are not printed (LO Writer)


In a table, I am using double edges (see attached document). On screen, the table looks as expected.

  1. When I print to paper, the double edges in the upper part of the table are printed as double edges. In the lower part, they are printed as a single line.
  2. When printing to a PDF, the upper part is as expected. In the lower part, the double ledges are reduced to a single line.
  3. When exporting to a PDF, in the upper part of the table, the left and right part of the double edge have different width. In the lower part, the double edges are reduced to either a thick line (left) or a thin line (right).

Is this a bug or is this a feature?

I am using LibreOffice on Fedora 33. My printer is a Brother DCPL2250DN laserprinter



See related question/answer at question/281697/.

This continues: Borders with double thin lines convert to single thin lines

Your border lines have different widths: 0.05 pt (bottom) and 0.25 pt (top). Check Table>Properties.

Your document is converted to PDF as you have designed it. The 0.05 pt double line is probably too thin for your printer and is collapsed to a single line.

On screen, LO displays double lines as pair of lines, even if the zoom factor would required merging them visually into a single line. Writer preserves the “technical” aspect of your line even if this is cheating with the proportions. Use the zoom slider to see than the appearance of the lower double lines do not change until you are at least 200%.

It is a shame there is no real table and cell styles (the present so-called “table styles” are in fact macros which do direct formatting). The difference between your lines comes from a manual formatting discrepancy.

Apart from the printer, my configuration is the same as yours (desktop KDE Plasma).


I think the documentation is not clear about what the Width parameter does.

After experimenting, it seems that the Width parameter controls the total width of the “brush” used to draw the border. Therefore when using double-pattern lines like Double Thin or Thin Thick, Small Gap, the width does not measure the width of the black line(s) (and with Thin Thick, which one?) but the total “thickness” of the lines and the gap in-between. The pattern is scaled according to the width given. This becomes obvious at high magnification and large “width”.

Unfortunately, there is no data about the percentage of the gap relative to the width.

Your printer is a 600 dpi one. A 0.25 pt line width is roughly 2 pixels. It is hard to divide it into 3 for the outer line, the gap and the inner line. If you really want to use double-lined patterns, you’d better increase the width until the gap is assigned at least one pixel. Otherwise, use a single line.


@LeroyG’s excellent answer to 281697/borders-with-double-thin-lines-convert-to-single-thin-lines contains detailed technical description on the border properties.

To show the community your question has been answered, click the ✓ next to the correct answer, and “upvote” by clicking on the ^ arrow of any helpful answers. These are the mechanisms for communicating the quality of the Q&A on this site. Thanks!

In case you need clarification, edit your question (not an answer which is reserved for solutions) or comment the relevant answer.

After increasing the width to 0.25, I now see 2 fat lines on screen (with little space between the lines). When printing to paper, I just see 1 big fat line. The original document did print 2 separate lines (The original document has been overwritten ;-(

Edited my answer at question/281697/ to add percentages and samples.

there is no data about the percentage of the gap relative to the width

(I can’t set the second first paragraph as a cite. Trying to understand why. OK: add a line before.)

@LeroyG: congratulations and thanks for demystifying the borders. Excellent job!

Formatting for “cite” is > preceding the paragraph. “4 spaces” (as you did) is rather for programming snippets (uses monospace font).

@ajlittoz, Thanks again! Now I can’t correct it (but you can). :slight_smile:

Learning and sharing.