Black box over image when printing pdf

2009-03-12 Thread rettie

Hello everyone! I use Lyx 1.6.1 on Arch linux and I've been having trouble
with a .png image in a figure of mine, this one specifically:

http://en.wikipedia.org/wiki/File:Terephthalic-acid-2D-skeletal.png
http://en.wikipedia.org/wiki/File:Terephthalic-acid-2D-skeletal.png 

It converts to pdf fine but as soon as I print it a black box appears over
the image. Has anyone else had this problem? I've tried various printers
with no luck. Also, the image came out fine when I used Word and made a pdf
file. Has anyone else had this problem? Thanks in advance!

Another quick question: the default margins for the article class are large,
but I've always liked them because I hate crowded pages. Are there any real
benefits of the margins this size? I remember someone told me it's something
to do with the average number of words on a line, though this could have
been a lie... haha if there's a science behind it I wouldn't dare change it!

Cheers!

Alex

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Re: Black box over image when printing pdf

2009-03-12 Thread rgheck

rettie wrote:

Another quick question: the default margins for the article class are large,
but I've always liked them because I hate crowded pages. Are there any real
benefits of the margins this size? I remember someone told me it's something
to do with the average number of words on a line, though this could have
been a lie... haha if there's a science behind it I wouldn't dare change it!

  

There's a nice discussion of this in the koma-script manual.

rh



Re: Black box over image when printing pdf

2009-03-12 Thread Les Denham
On Thursday 12 March 2009, rettie wrote:
 Hello everyone! I use Lyx 1.6.1 on Arch linux and I've been having trouble
 with a .png image in a figure of mine, this one specifically:

 http://en.wikipedia.org/wiki/File:Terephthalic-acid-2D-skeletal.png
 http://en.wikipedia.org/wiki/File:Terephthalic-acid-2D-skeletal.png

 It converts to pdf fine but as soon as I print it a black box appears over
 the image. Has anyone else had this problem? I've tried various printers
 with no luck. Also, the image came out fine when I used Word and made a pdf
 file. Has anyone else had this problem? Thanks in advance!

This image has a transparent background -- I'm sure that's the problem.  
Convert it to one with a white background (using any image editing program) 
and it should be fine.

 Another quick question: the default margins for the article class are
 large, but I've always liked them because I hate crowded pages. Are there
 any real benefits of the margins this size? I remember someone told me it's
 something to do with the average number of words on a line, though this
 could have been a lie... haha if there's a science behind it I wouldn't
 dare change it!

If lines have too many characters in them, the eye has trouble going 
automatically to the start of the next line.  A rule of thumb is about 80 
characters per line, and the default margins are chosen (by LaTeX, not LyX) 
to limit lines to this length.

-- 
Les

~~
Please avoid sending me Word or PowerPoint attachments.
See http://www.gnu.org/philosophy/no-word-attachments.html


Black box over image when printing pdf

2009-03-12 Thread rettie

Hello everyone! I use Lyx 1.6.1 on Arch linux and I've been having trouble
with a .png image in a figure of mine, this one specifically:

http://en.wikipedia.org/wiki/File:Terephthalic-acid-2D-skeletal.png
http://en.wikipedia.org/wiki/File:Terephthalic-acid-2D-skeletal.png 

It converts to pdf fine but as soon as I print it a black box appears over
the image. Has anyone else had this problem? I've tried various printers
with no luck. Also, the image came out fine when I used Word and made a pdf
file. Has anyone else had this problem? Thanks in advance!

Another quick question: the default margins for the article class are large,
but I've always liked them because I hate crowded pages. Are there any real
benefits of the margins this size? I remember someone told me it's something
to do with the average number of words on a line, though this could have
been a lie... haha if there's a science behind it I wouldn't dare change it!

Cheers!

Alex

-- 
View this message in context: 
http://n2.nabble.com/Black-box-over-image-when-printing-pdf-tp2470386p2470386.html
Sent from the LyX - Users mailing list archive at Nabble.com.



Re: Black box over image when printing pdf

2009-03-12 Thread rgheck

rettie wrote:

Another quick question: the default margins for the article class are large,
but I've always liked them because I hate crowded pages. Are there any real
benefits of the margins this size? I remember someone told me it's something
to do with the average number of words on a line, though this could have
been a lie... haha if there's a science behind it I wouldn't dare change it!

  

There's a nice discussion of this in the koma-script manual.

rh



Re: Black box over image when printing pdf

2009-03-12 Thread Les Denham
On Thursday 12 March 2009, rettie wrote:
 Hello everyone! I use Lyx 1.6.1 on Arch linux and I've been having trouble
 with a .png image in a figure of mine, this one specifically:

 http://en.wikipedia.org/wiki/File:Terephthalic-acid-2D-skeletal.png
 http://en.wikipedia.org/wiki/File:Terephthalic-acid-2D-skeletal.png

 It converts to pdf fine but as soon as I print it a black box appears over
 the image. Has anyone else had this problem? I've tried various printers
 with no luck. Also, the image came out fine when I used Word and made a pdf
 file. Has anyone else had this problem? Thanks in advance!

This image has a transparent background -- I'm sure that's the problem.  
Convert it to one with a white background (using any image editing program) 
and it should be fine.

 Another quick question: the default margins for the article class are
 large, but I've always liked them because I hate crowded pages. Are there
 any real benefits of the margins this size? I remember someone told me it's
 something to do with the average number of words on a line, though this
 could have been a lie... haha if there's a science behind it I wouldn't
 dare change it!

If lines have too many characters in them, the eye has trouble going 
automatically to the start of the next line.  A rule of thumb is about 80 
characters per line, and the default margins are chosen (by LaTeX, not LyX) 
to limit lines to this length.

-- 
Les

~~
Please avoid sending me Word or PowerPoint attachments.
See http://www.gnu.org/philosophy/no-word-attachments.html


Black box over image when printing pdf

2009-03-12 Thread rettie

Hello everyone! I use Lyx 1.6.1 on Arch linux and I've been having trouble
with a .png image in a figure of mine, this one specifically:

http://en.wikipedia.org/wiki/File:Terephthalic-acid-2D-skeletal.png
http://en.wikipedia.org/wiki/File:Terephthalic-acid-2D-skeletal.png 

It converts to pdf fine but as soon as I print it a black box appears over
the image. Has anyone else had this problem? I've tried various printers
with no luck. Also, the image came out fine when I used Word and made a pdf
file. Has anyone else had this problem? Thanks in advance!

Another quick question: the default margins for the article class are large,
but I've always liked them because I hate crowded pages. Are there any real
benefits of the margins this size? I remember someone told me it's something
to do with the average number of words on a line, though this could have
been a lie... haha if there's a science behind it I wouldn't dare change it!

Cheers!

Alex

-- 
View this message in context: 
http://n2.nabble.com/Black-box-over-image-when-printing-pdf-tp2470386p2470386.html
Sent from the LyX - Users mailing list archive at Nabble.com.



Re: Black box over image when printing pdf

2009-03-12 Thread rgheck

rettie wrote:

Another quick question: the default margins for the article class are large,
but I've always liked them because I hate crowded pages. Are there any real
benefits of the margins this size? I remember someone told me it's something
to do with the average number of words on a line, though this could have
been a lie... haha if there's a science behind it I wouldn't dare change it!

  

There's a nice discussion of this in the koma-script manual.

rh



Re: Black box over image when printing pdf

2009-03-12 Thread Les Denham
On Thursday 12 March 2009, rettie wrote:
> Hello everyone! I use Lyx 1.6.1 on Arch linux and I've been having trouble
> with a .png image in a figure of mine, this one specifically:
>
> http://en.wikipedia.org/wiki/File:Terephthalic-acid-2D-skeletal.png
> http://en.wikipedia.org/wiki/File:Terephthalic-acid-2D-skeletal.png
>
> It converts to pdf fine but as soon as I print it a black box appears over
> the image. Has anyone else had this problem? I've tried various printers
> with no luck. Also, the image came out fine when I used Word and made a pdf
> file. Has anyone else had this problem? Thanks in advance!

This image has a transparent background -- I'm sure that's the problem.  
Convert it to one with a white background (using any image editing program) 
and it should be fine.

> Another quick question: the default margins for the article class are
> large, but I've always liked them because I hate crowded pages. Are there
> any real benefits of the margins this size? I remember someone told me it's
> something to do with the average number of words on a line, though this
> could have been a lie... haha if there's a science behind it I wouldn't
> dare change it!

If lines have too many characters in them, the eye has trouble going 
automatically to the start of the next line.  A rule of thumb is about 80 
characters per line, and the default margins are chosen (by LaTeX, not LyX) 
to limit lines to this length.

-- 
Les

~~
Please avoid sending me Word or PowerPoint attachments.
See http://www.gnu.org/philosophy/no-word-attachments.html