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Re: [css-page-3] 'marks' and 'bleed'

From: Håkon Wium Lie <howcome@opera.com>
Date: Mon, 21 Oct 2013 22:37:05 +0200
Message-ID: <21093.36977.849095.995162@gargle.gargle.HOWL>
To: Florian Rivoal <florian@rivoal.net>
Cc: www-style@w3.org
Florian Rivoal wrote:

 > > In the interest of avoiding stacks of properties, could we find one
 > > design that works for all/most printers?
 > I would ask that the crop marks and cross marks be entirely outside of
 > the bleed.

That seems like a reasonable requirement. But is that far enough out
for all printers? Esp. when bleed is small, it seems we need a minimum
distance in addition?

 > This is useful when in post processing you want to be able to detect and
 > isolate the crop marks, which is needed for some workflows where you
 > want to delete the crop marks but keep the bleed.
 > I would also prefer that we remove this requirement: "This property
 > (bleed) only has effect if crop marks are enabled.", and get a way of
 > showing the bleed without displaying the crop marks.

I agree.

 > Both requirements stem from the fact that it is sometimes useful to have
 > bleed but not crop marks. When preparing print plates where multiple
 > documents are combined next to eachother to be printed on one sheet of
 > paper, and later cut, you want the bleed to avoid getting thin lines of
 > white when cutting, but you don't want the crop marks around each
 > document, as they'd take a lot of space, but instead regenerate them on
 > the side of the whole print plate.
 > Naturally, to generate these, you need to know where the page stops, but
 > visual crop marks are not necessary for that. Metadata (such as the
 > coordinates of the bleed box in pdf files) is sufficient.


              Håkon Wium Lie                          CTO °þe®ª
howcome@opera.com                  http://people.opera.com/howcome
Received on Monday, 21 October 2013 20:37:38 UTC

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