Page breaks appearing as thick line on actual print-out

I'm using Insert->Page Break to do just that, but thick black lines are appearing on the actual printed copy wherever I indicated a break. Can this be turned off?

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What kind of printing environment do you have selected? – Sjoerd C. de Vries Oct 12 '12 at 13:46
@SjoerdC.deVries I'm using Bulleted Environment with Outline as the stylesheet. – user745434 Oct 12 '12 at 13:53
Don't know that. Are you sure you're looking at this or this? – Sjoerd C. de Vries Oct 12 '12 at 14:04
In the working environment page breaks appear as black lines, if I'm not mistaken. It looks like the print is emulating the working environment. I'll check what may be causing this when I'm back at my own Mathematica installation. – Sjoerd C. de Vries Oct 12 '12 at 15:40
I can confirm that this also happens to me in the default stylesheet. Perhaps you should contact support@wolfram.com to make a bug report. As a workaround I suggest using cells with "\f" (form feed). Evaluate an input cell with it and copy the resulting output cell anywhere you want to have a page break. – Sjoerd C. de Vries Oct 12 '12 at 19:25

I can confirm that this also happens to me in the default stylesheet. Perhaps you should contact support@wolfram.com to file a bug report. As a workaround I suggest using cells with "\f" (form feed). Evaluate an input cell with it and copy the resulting output cell anywhere you want to have a page break.

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If you wish to suppress the black line you can change this in the Style Sheet. For a particular Notebook choose Format > Edit Stylesheet... and paste this into the window:

Cell[StyleData["PageBreak", "Printout"],
Editable->False,
CellFrame->0,
CellMargins->{{0, 0}, {1, 1}},
CellElementSpacings->{"CellMinHeight"->1,
"ClosedCellHeight"->1},
CellOpen->False,
PageBreakBelow->True,
CellFrameMargins->0,
CellSize->{Inherited, 2},
Background->None]


Choose Yes if asked "Do you want to interpret the text?". Nothing will appear because the style is invisible (that's the idea after all) but it will have effect. Close the Style Sheet.

Linebreaks in this Notebook will now be invisible in the "Printout" environment (the default for printing and PDF export).

If you want to apply this to all new Notebooks you can create a custom Style Sheet and then change the global DefaultStyleDefinitions option to point to it:

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 Hey. Thank you for the answer, but the problem is still there. I've tentatively solved the problem by manually adding new lines. Not elegant, unfortunately. – user745434 Oct 14 '12 at 3:07 @user745434 when using the method presented to you still see the black dividing lines on the screen in Screen Environment > Printout, or only on paper? – Mr.Wizard♦ Oct 14 '12 at 3:22 only on paper. Just now I realized that printout is also a screen environment (sorry, new guy). I was referring to the paper itself (also print preview, saved PDFs, etc.) – user745434 Oct 14 '12 at 3:45 @user okay, I haven't tried printing to paper. I'll see if I can find a solution that affects that too but it will have to wait. – Mr.Wizard♦ Oct 14 '12 at 4:23