Dear Roger,
The root cause of the problem is the OBA itself. The best practice is to keep
it dormant. The minute you try waking it up, Pandora’s box opens. The actual
sunlight has never been accepted as a reliable light source. It is loaded with
ample amounts of UV, that you need to keep away from your eyes and skin.
The real solution is the replacement of the OBAs/FWAs with non-fluorescent
white pigments and fillers (in the case of uncoated papers) by the paper
industry. Assuming that you read a book printed on a high-OBA paper under a
light with a strong UV component before going to bed, the secondary blue
emission (at around 430 nm) will most probably reset your circadian rhythm. All
recent smartphones are being equipped with blue light filters that can even be
scheduled to switch on and off in sync with sunset and sunrise or at any time
you set.
The printing industry only needs UV as an ink-curing tool, where it is very
very useful.
Refik Telhan
From: <argyllcms-bounce@xxxxxxxxxxxxx> on behalf of <graxx@xxxxxxxxxxxx>
Reply-To: <argyllcms@xxxxxxxxxxxxx>
Date: 17 December 2019 Tuesday 17:36
To: <argyllcms@xxxxxxxxxxxxx>
Subject: [argyllcms] Re: Can we control the shadows (was black point
compensation)
Refik,
You wrote:
Print buyers are no longer interested in viewing the printed image
under light sources that contain any trace of UV. It is only present in
the ISO 3664:2009-compliant reference lights.
