* Resolution of the images
@ 2006-01-16 11:22 Andreas Wapf
2006-01-16 16:22 ` Henning Hraban Ramm
0 siblings, 1 reply; 3+ messages in thread
From: Andreas Wapf @ 2006-01-16 11:22 UTC (permalink / raw)
Hello
How does texexec --pdf file.tex includes the images into the target pdf
file?
Does texexec process modify the images?
What is the target resolution of the pdf?
How should I optimize the process for digital or offset printing?
Or is there somewhere a good introduction into this topic?
Thanks,
Andreas
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* Re: Resolution of the images
2006-01-16 11:22 Resolution of the images Andreas Wapf
@ 2006-01-16 16:22 ` Henning Hraban Ramm
2006-01-16 19:14 ` Peter Münster
0 siblings, 1 reply; 3+ messages in thread
From: Henning Hraban Ramm @ 2006-01-16 16:22 UTC (permalink / raw)
Am 2006-01-16 um 12:22 schrieb Andreas Wapf:
> How does texexec --pdf file.tex includes the images into the target
> pdf file?
> Does texexec process modify the images?
> What is the target resolution of the pdf?
- texexec, i.e. pdftex, just embeds images (also pdf) without
changing them, besides scaling
- a PDF has no resolution, only some embedded contents may have any
> How should I optimize the process for digital or offset printing?
- define your colors in cmyk (at least *also*)
- prepare your pictures for the right resolution; if you need two
versions (say web and print) you'd need to prepare both; you should
name highres and lowres the same, only put them in different
directories, so you could use mode sections that define the image path.
- the right resolution depends from the printing method and the
screening.
a common rule of thumb for color and greyscale pictures is "twice the
screen" (res. in dpi, screen in lpi), but \sqrt{2} would in fact be
enough.
line art pictures should have the resolution of the printing device,
but 800 dpi is mostly enough.
- if some elements should touch the paper border, they must "bleed"
2-3 mm over to avoid white "flashers" after cutting; that contains
that the printing paper sheet is bigger than your final paper size.
- you can prepare book(let) ordering of your pages with ConTeXt;
that's called "imposition" in prepress and "arranging" in ConTeXt.
What else do you need to know?
Perhaps you're interested in my formula collection for printing
engineers:
http://www.fiee.net/texnique/?menu=0-2-1&lang=de
(source is LaTeX, unfortunately)
Grüßlis vom Hraban!
---
http://www.fiee.net/texnique/
http://contextgarden.net
http://www.cacert.org (I'm an assurer)
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* Re: Resolution of the images
2006-01-16 16:22 ` Henning Hraban Ramm
@ 2006-01-16 19:14 ` Peter Münster
0 siblings, 0 replies; 3+ messages in thread
From: Peter Münster @ 2006-01-16 19:14 UTC (permalink / raw)
On Mon, 16 Jan 2006, Henning Hraban Ramm wrote:
> - prepare your pictures for the right resolution; if you need two
> versions (say web and print) you'd need to prepare both; you should
> name highres and lowres the same, only put them in different
> directories, so you could use mode sections that define the image path.
Or you use \usemodule[degrade]...
You can get it from http://pmrb.free.fr/work/OS/ConTeXt/
Cheers, Peter
--
http://pmrb.free.fr/contact/
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