Thanks, Pablo, I fully understand the situation... since mine is much
the same. I only use open source and as far as possible free software
and I cannot afford expensive validating software (which I presume is
Adobe Pro or the likes thereof).
In the end, I have to leave it to the print company to sort out any
problem, but I just happen to be one of those people who try to
understand what I am doing, and try to deal with problems as they arise,
especially if I have log files in front of me that indicate an error.
It seems a bit strange to me that if I choose (have to choose in my
case) PDF/X-1a, and I need to indicate an intent, that I cannot easily
find a color profile that fits it and that does not cause the ConTeXt
log file to indicate either a fatal error (meaning I can no longer
proceed without changing something) or an error that still allows
compilation but says things like such-and-such a color profile is not
found...; or that indeed compiles, but still tells me that transparency
is supported, even if this is not according to the PDF/X standard.
Yes, these standards are complex issues, so thank you for doing your
best to explain things to me. I still appeal to someone out there who
can indicate just what kind of intent I can use for PDF/X-1a that will
comply with the standard that says I may not have rgb or transparency.
Julian
On 18/5/25 21:16, Pablo Rodriguez via ntg-context wrote:
On 5/18/25 11:13, jbf wrote:
[...]
In other words, if rgb is permitted and transparency is supported,
is this acceptable?
Sorry, Julian, but I took the following for granted and it’s important
that I make it clear first.
I tried to help, but I’m able to do it only to a certain extent. This is
similar to “I’m not a lawyer and this isn’t legal advice”, I’m not a
(printer|PDF/X validator) and this cannot be printing advice (only some
information).
PDF/X are a series of ISO standards. I don’t have the resources (mainly,
time and income) to spend 105€ (my currency) in less than twenty pages
(to end having a hard time to even understand them). Besides, I have
myself no use for it.
In theory, you cannot have rgb and transparency in PDF/X-1a. But as
theory and practice may only differ in practice, it might be different
in practice.
Here comes my personal take on the PDF/X-1a format for \setupbackend.
If your PDF document is validated against the standard (using a
program), it may be automatically rejected.
But if it isn’t, your document may have no problem as long as it doesn’t
contain other than grayscale colors and the grayscale output intent and
color profile.
Again, this is as far as I understand. Sorry, but it is beyond my
knowledge and I cannot pretend I know what IngramSpark will do with the
PDF document you send them.
I hope it is clearer now,
Pablo
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : ntg-context@ntg.nl /
https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : ntg-context@ntg.nl /
https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive : https://github.com/contextgarden/context
wiki : https://wiki.contextgarden.net
___________________________________________________________________________________
