Unwanted horizontal white hairline rules in PDF in Mac Preview

users
#1

I just switched from NeoOffice to LibreOffice on my Mac. LibreOffice is much
more reliable! I was getting mysterious
disappearances of pictures in NeoOffice and have had no such problems since
the switch.

But one new problem is that when I export a PDF and then view it in Preview
(in MacOS 10.6.8), there are full-width
hairline white horizontal rules aligned with the top edge of some JPGs in
the document. These rules don't appear when
I view the document in Adobe Reader, but they do seem to appear when I
/print/ even from Adobe Reader. So I'm
guessing the exported PDF has some not-quite-standard feature that isn't
working in MacOS.

An example is at http://cs.berkeley.edu/~bh/bug.pdf

Thanks!

#2

do you have a PDF printer to try?
Ubuntu and other Linux have CUPS-PDF and there is a Windows one called doPDF.
I find that it is good to try both the Export to PDF and a PDF Printer to compare each output.

Sometimes it works better with CUPS, while other times it is better with the Exporting.

To my, you PDF sample looks like it has ruled lines as part of the background texture. The more I zoom in for the viewing, the less ruled lines keep in the image. At 300% there is hairlines with only the photo, the "BITS" logo next to it and the National Science Foundation logo. All other images do not seem to have one. I do not see any on the second page.

I wonder why there was only 3 images that had the hairline associated with them. Seems weird. I use to have problems with Adobe's Pagemaker. It placed a small black box on part of the first page of a 8 page newsletter. No one could figure why it happened. IT never happened with any other document. So I ended up using a different package for a pit till I quite doing newsletters.

So it could be just a gremlin in the document.

Have you created a different document, adding the same background and some images? Did the hairline show up with that new document? If it does, then there is a recurring issue. IF not, then it could be something with that document that caused the gremlin to appear.

Try a second document. Simple one with a little text and images, using the same background. We need to know if it is a problem that can be reproduced.

#3

Hi,

But one new problem is that when I export a PDF and then view it in Preview
(in MacOS 10.6.8), there are full-width
hairline white horizontal rules aligned with the top edge of some JPGs in
the document. These rules don't appear when
I view the document in Adobe Reader, but they do seem to appear when I
/print/ even from Adobe Reader. So I'm
guessing the exported PDF has some not-quite-standard feature that isn't
working in MacOS.

An example is at http://cs.berkeley.edu/~bh/bug.pdf

They look like grid/guidelines. Did you do your document in Draw ?
If so, did you activate the grid and use guidelines for positioning your objects ?
I suspect this might be an option you can turn off in the relevant option section of the corresponding module.

Alex

#4

...
Perhaps I'm missing the obvious, but when I view that PDF in Adobe
Reader 9.4.6 (linux) I see not hairline white horizontal rules (even at
200% zoom). Nor do I see them in Evince or Okular.

Printing from AR 9.4.6 (linux) to an Epson WorkForce 635 doesn't reveal
any either. Maybe it's a Mac issue?

#5

I viewed the document in Foxit Reader v5.1 on a Win7 64bit system and didn't see the lines either.

Jerry

#6

I was looking at it with the "default viewer" for Ubuntu 10.04LTS. Whether it is Adobe or not, I do not remember if I installed it, it may not be an issue for everyone. The viewing and the printing that shows the hairline might be a system dependent issue. It could be a resolution issue for printing and viewing. If you print it out with "graphics" at 150 dots-per-inch, it may be there, or not. At 300 dpi is could be there, or not. At 600 dpi, the same. It could just depend on what the printer settings are at for the print job. For me, I use 300 dpi for standard printing of graphics, but for printing of documents that will be reproduced and given out, I go for 600 dpi or greater.

I just printed it out on my Epson Artisan printer. I use US Letter paper so I used "shrink to fit page" and use the print quality option for "text with image". Also I did not use borderless printing. When I looked at the I did not find any hairlines at all. Of course, there was wide borders on the top and bottom of the landscape orientation paper, so to me the original size was not 11 inches by 8.5 inches. Maybe it was 11" by 7.25" originally.

So my printing did not show any hairlines.

Are you printing it out on an Inkjet printer or a Color Laser printer?

I just tried it on an HP Color Laserjet 2600n. No hairline there as well.

#7

I have just viewed this in Adobe Acrobat and it is OK
I imported it into Libre 3.4.4 on my iMac using Lion and found that the
whole page is covered with a grid.
The lines are vertical as well as horizontal.

Tink

#8

Why am I getting these e-mails about white lines, I don't have any white lines
This is not a good start !!!!
First Libre Office has hijacked my word docs and turned them into Note Pad
Then your users+subscribe@global.libreoffice.org e-mail address comes back as:-
Wait for it!!

Sorry, we were unable to deliver your message to the following address.

<users+subscribe@global.libreoffice.org>:
Remote host said: 554 5.7.0 Reject, id=09370-06 - SPAM [BODY]

Can I please have someone to help me with my problem or I will junk Libre and go back to Open Office.org!!!!!!!!!!!!!!!!!!!!!!!

#9

Why am I getting these e-mails about white lines, I don't have any white lines
This is not a good start !!!!
First Libre Office has hijacked my word docs and turned them into Note Pad
Then your users+subscribe@global.libreoffice.org e-mail address comes back as:-
Wait for it!!

Sorry, we were unable to deliver your message to the following address.

<users+subscribe@global.libreoffice.org>:
Remote host said: 554 5.7.0 Reject, id=09370-06 - SPAM [BODY]

Can I please have someone to help me with my problem or I will junk Libre and go back to Open Office.org!!!!!!!!!!!!!!!!!!!!!!!

#10

Thank you all for your suggestions. I, too, see a grid in some readers
(e.g., Evince on Linux) but it's not a
grid of sharp white lines; it's just a noticeable artifact of tiling the
background (sand.jpg from the LibreOffice
gallery). Apparently its edges don't join smoothly; it wasn't (virtually)
printed on a torus and then sliced.
I think this is a separate problem from my very crisp 100% white
horizontal-only lines.

I was kind of hoping someone would declare this an official LibreOffice bug
and fix it, or come up with
a good workaround. I don't want to have to redo the whole project in Adobe
Illustrator or something.

#11

When I originally posted this problem I didn't have access to a color printer
because I was travelling.
Now I'm home and when I print either directly from LibreOffice or via Export
PDF and then Preview,
there are no white lines. But they're clearly visible on the screen, and
they aren't grid lines or tiling
problems; they are far from evenly spaced.

But since it seems to print correctly, I guess I should downgrade this from
a deal-killer to an annoyance.
I'll report back if it prints incorrectly on the commercial 11x17 full bleed
printer I'll be using for the
final document. Thanks, all!

#12

As I zoom in more and more, most of the white hairlines started to go away. So it might be a display issue for part of the problem. At 100%, I had a lot of grid lines. At 200% had only about forth of the left. At 300% I had only 3 left.

#13

Not for me -- they get clearer and sharper as I zoom in. I'll attach an
excerpt from a screenshot.
http://nabble.documentfoundation.org/file/n3555176/Preview001.png

#14

Hi :slight_smile:
Is it a rendering issue? Perhaps an old driver? Codec or something? Is
there any way to check such things on a Mac?
Regards from
Tom :slight_smile:

#15

I think you should go back.

#16

No, I did not see the hairline lines there with my zooming in.

You did say you do not see it in the last color printing you did? If you see the lines in one place and I see them in a different place[s], it has to be something no associated with the actual file. It must be a monitor viewing issue or something.

#17

I'm sure it's a rendering issue. But it didn't happen when I was using
NeoOffice,
and I'd like to find out what's different in the PDF to cause it, to see if
I can work
around the problem.

#18

Hi :slight_smile:
It is possible to change your settings to the "nomail" option.  Then you can use Nabble to view just the single thread you are interested in, or choose a few threads

The fact that you are getting posts about the other threads suggests that you already are subscribed so further emails to the subscribe bot is just confusing it.  The error message described is received when trying to send to

subscribe@global.libreoffice.org

instead of

users+subscribe@global.libreoffice.org

Some email-'clients' can't handle the + sign inside a message so they ignore it and whatever precedes it when they cleverly make the address clickable.  When you copy&paste the entire address (including the "user+" bit at the beginning) into the "To" field they can cope with the + then, hopefully!

However it does sound as though you are already subscribed so sending to that address again should give you a little "help file". 
Regards from
Tom :slight_smile: