I have very often seen 'commercial' being used in this sense. This is to distinguish between 'mass-produced-acceptable-quality'[commercial] vis-a-vis 'special & more expensive'

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Note added at 7 mins (2004-09-16 14:44:56 GMT)
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I can give you more inputs if you want to be sure.

I work at Canon Inc., and there's a thing called "print-for-pay" (PFP), which only means printing in shops, as in Kinko's and similar shops where you go to get copies and prints.

As opposed to printing in your own printer at home, or at the office... where it doesn't cost you a cent.

Hope that helps :)

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Note added at 11 mins (2004-09-16 14:48:18 GMT)
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This link may help :)

The Changing Print for Pay Market: The Future of Commercial ...
... This study will provide a solid understanding of where the industry is today and
what is the future of Print For Pay and the Commercial Printing in the United ...
www.capv.com/home/Multiclient/printforpay.html - 10k - Cached - Similar pages

Well, Heidrun, as the distinction is clearly being made between NEWS printing (very special requirements, type of paper., etc) and supplements (usually better quality paper, often glossy, in colour, etc.), my guess would be that the word 'commercial' here is simply being used in the sense of 'general-purpose' printing (i.e. most purposes that are NOT newspapers)
In British English at least, 'commercial' is often still used in this sort of sense, even though in certain contexts it has quite a dated sort of air

commercial stationery = the sort of stationery used in offices, businesses etc. (as distinct from social stationery, private letterheads, wedding invitations etc.)

commercial hotel (very old-fashioned!) = the sort of cheap hotel where traveling salesmen might stay, 'nice' people wouldn't go there!

commercial vehicle = some sort of sturdy, utilitarian vehicle (van, lorry, etc.) as distinct from a private car

I would be very surprised if the 'commercial' in your given context meant specifically 'advertising', since there is no particular reason why an advert should require any different kind of printing ink --- especially give all the very different types of advertising printing around!

I should add that I do not have any specialist knowledge in this area, other than some fairly peripheral slight familiarity with the printing industry, and general knowledge of the situation in the UK at least.

HTH!

the variety of commercial printing processes including offset
lithography, flexography, gravure, thermography, and engraving. .
desktoppub.about.com/od/printingprocesses/

commercial printing press for catalog printing, book printing, brochure printing, poster printing and much more with the best quality and price ...
www.losangelesprintingcompany.com/default.htm

from these two sites, you can get an idea about commercial printing vs personal or desktop printing, namely from the ink used, the printers used and the speed and size of the printed material.

The *both* in "both standard news production as well as inks for supplement and commercial printing" refers to news print (usually 1 color, newsprint paper) on the one side and supplements and commcercial printing on the other side: usually 4 colors, better paper grades, coated paper, etc.). Supplements are not part of the actual news production - they will be printed in a separate process/press and inserted later. That's why they are mentioned together with commercial printing.