Digital BW, The Print

Hi all, question for QuadToneRIP Linux users.

Has anyone managed to print an image *exactly* 
centered on a page?

When I specify centering, the image is always 1/4"
further more inset on the left side than the right,
though it is perfectly centered vertically.

I've been trying various options, but none seem to
affect this and I've run out of ideas. Same problem 
occurs on both 8x10 and SuperB, by the way--always a 
quarter inch more white space on the left side.

Hints appreciated,
David

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "David Wroblewski" 
<dawroblewski@y...> wrote:
> Hi all, question for QuadToneRIP Linux users.
> 
> Has anyone managed to print an image *exactly* 
> centered on a page?
> 
> When I specify centering, the image is always 1/4"
> further more inset on the left side than the right,
> though it is perfectly centered vertically.
> 
> I've been trying various options, but none seem to
> affect this and I've run out of ideas. Same problem 
> occurs on both 8x10 and SuperB, by the way--always a 
> quarter inch more white space on the left side.
> 
> Hints appreciated,
> David

David,

The centering of prints has always been a little tricky, so
the best thing is to just find out how far off it is and have
a known offset.  In your case it seems like just moving
right 1/8" would do it.  Another method some have taken
is to do custom pages with custom equal margins, but 
that will depend on some of the Linux programs you are 
using.

Roy

Hi Roy, thanks for your response. It's good to know it's not
just my setup being goofed. Unfortunately, it is the method 
of offsetting the image 1/8" to the LEFT (not right) that I
can't figure out. 

Believe it or not, I'm using lpr to print--indirectly.
I have a bash script that interactively queries for the print
parameters and then generates a long lpr command which is
displayed for approval, then executed. The advantage is 
that once a good lpr command line has been generated, 
one can easily save it along with the image to reprint 
it later. (Without having to recall which options one 
selected in, for example, qtcups, to produce the master 
image one liked so much two months before.)

When I get that script finished, I was planning on sharing
it with the group. If compensating with an offset to get the
centering right is required, I'd like to include that in the 
script before I post it.

I'll keep experimenting!

-David



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Roy 
Harrington" <roy@h...> wrote:

> > <dawroblewski@y...> wrote:
> > 
> > Has anyone managed to print an image *exactly* 
> > centered on a page?
> > 

> 
> The centering of prints has always been a little tricky, so
> the best thing is to just find out how far off it is and have
> a known offset.  In your case it seems like just moving
> right 1/8" would do it.  Another method some have taken
> is to do custom pages with custom equal margins, but 
> that will depend on some of the Linux programs you are 
> using.