Thank you Willi!
Generally I know for what binding correction is used, I just never tried
to set it up. If I look carefully at one of our printed booklets, the
printshop also didn’t. So I'd need pageshift without applying imposition
(setting it up wouldn’t hurt).
I didn’t think about vertical pageshift, but of course that’s also
needed for cross-folded sheets.
I'm not sure how (horizontal) pageshift is supposed to work with full
page images without introducing white borders, but bleed at the inner
edge should be enough.
Theoretically the shift value should be the same as the paper thickness
(don’t you think?), but there’s some deformation involved, so a factor
might make sense?
Unfortunately I threw out my old books on printing technology long ago,
and my newer one doesn’t cover bookbinding (I’m not at home anyway).
Hraban
Am 19.03.24 um 17:01 schrieb Willi Egger:
Hi Hraban,
I think we should clarify this.
Binding correction is a fixed amount of whitespace in the spine added to the
inner white-space. This is to ensure, that the binding, which is consuming
white-space, keeps the inner white-space optically as intended..
The page shift mechanism works only with imposition enabled. This ensures, that
the type-setting area does not creep towards the spine because multiple sheets
of paper are folded in the spine.
I doubt whether it is enough to have the measure of the thickness do determine
this creeping effect, because we are making folds which are probably more
circles than just adding thickness of paper.
Willi
On 18 Mar 2024, at 17:35, Hraban Ramm <te...@fiee.net> wrote:
Am 17.03.24 um 23:54 schrieb Wolfgang Schuster:
Hraban Ramm schrieb am 17.03.2024 um 22:48:
Hi, this question was rised in my ConTeXt beginners workshop* at Chemnitz Linux
Days today:
Can I configure binding correction for saddle-stitched or thread-bound
booklets, and if, does it only work with arranging (imposition) or can I enable
it somehow for the layout (if the printshop does the imposition)?
1. \definepageshift + \setuppageshift
2. \setuplayout[horoffset=<DIMENSION>]
Also I recognized I'm not sure about the difference of the layout parameters
backspace and cutspace.
backspace is the inner margin and cutspace the outer
Hi Wolfgang, thank you! Seems like I was too dense to understand the
description for the \setuplayout parameters in the wiki (and there are more
that I never used, oh my…), and since I never use ConTeXt’s imposition for
serious print products (and never set up a scheme myself), I didn’t know about
pageshift.
Ok, if I leave imposition to the printshop and they don't do binding correction
in their workflow, I'd need to set horoffset differently for every single page
(i.e. first, second, second-to-last and last the same; 3th, 4th and from back
the same etc.). Or is pageshift applied independently from arranging?
And then, it makes no sense to add the same value all the time. I don’t know if BCOR
works this way in LaTeX, but one value (paper thickness) should be enough in combination
with an imposition schema. I.e. if I define a paper thickness and the number of pages
that are in one booklet (as a single booklet or part of a "proper" book), then
the page shift should work automatically.
Well, for a single booklet, it could. In a book, booklets can have different
numbers of pages, and then you'd need to define a list… Okay, too complicated.
It’s the printshops's responsibility anyway, and nobody complained about my
books so far. (I'm not perfectionist enough to care.)
Hraban
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