[scribus-dev] cover.py script for perfect bound book cover design is ready.

[Louis Desjardins]

2014-12-24 7:58 GMT-05:00 Gregory Pittman <gpittman at iglou.com>:

> On 12/24/2014 06:25 AM, JLuc wrote:
> > Le 23/12/2014 22:27, Louis Desjardins a écrit :
> >> Europe uses GSM (grams per square meter) and thus printers seem to use
> >> a different formulae to get the spine thickness.
> >
> > Paper with same 'grammage' (GSM = g/m²) can have different thickness.
> >
> > According to provided link http://www.graphitec.org/epaisseur.html,
> > thickness formula for inner pages is :
> > specialpaperfactor x grammage x nbpage / 2
> >
> > With "standard papier", specialpaperfactor = 1
> >
> > With "papier couché", specialpaperfactor goes 0.85 to 1.15
> > With "papier offset", specialpaperfactor goes 1.05 to 1.25
> > With "papier bouffant", specialpaperfactor goes from 1.15 to 1.70
> >
>
> Another approach to consider might be to create the script as
> envisioned, after which the user presents the results to his printer,
> then adjust the cover's spine if needed.
>

Encouraged by a few offlist discussions, here’s yet another approach to
this whole issue. I would call it the "unscript approach", if you allow me!

The other way I thought for Scribus (back a few years ago) was to address
this case by asking the developers to allow us to use spreads in a
combination of pages of different sizes. By the way, this would not be
limited to covers and spines but would be useful in all cases where pages
need not to be of equal size, for example with pamphlets where flaps are
not equal to allow the paper to fold correctly. Back to spine, the middle
page being the spine, you can simply change the page size when you need to.
By adding the possibility of enlarging or reducing the page width from a
reference point that could be the center of the page, the elements on that
page would remain centered. And there would be no need for a script. And
you can have flaps too, by adding 2 pages to the first 3. I wouldn’t say
the possibilities are countless but given the fact that those are pretty
common cases in the printing world, I think it would be great to address
this in a more efficient way. And I would put the calculation for the spine
as an article in the wiki.

Related topic in the bug tracker
http://bugs.scribus.net/view.php?id=5372

>From the mailing list a discussion between John and I and a few other
suspects (!) on july 21, 2011. Subject line : Printing as Spread.

Andreas also made a comment on that topic in the same discussion.

Something to put on the heat for 2015?

Cheers!

Louis


>
> Greg
>
>
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