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Digital BW, The Print

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Re: [Digital BW] Re: Optimal RIP gamma - was how many shades of grey?

2005-06-20 by Steve Kale

Found it and taking a look


> From: Steve Kale <stevekale@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Mon, 20 Jun 2005 16:26:23 +0100
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: Re: [Digital BW] Re: Optimal RIP gamma - was how many shades of grey?
> 
> 
> 
> 
>> From: dfaprinting <dfaprinting@...>
> 
> 
>> I've said this a couple of times, but will repeat one more.
> 
> Yes
> 
>> If you 
>> are running a RIP that uses CMYK output profiles, you can build a BO
>> profile in Xrite's ColorshopX. Might also be possible to build it
>> from measured values, never tried that.
> 
> The whole point is to get one that uses measured data.  Can you delete the
> other channels?  Are you sure it doesn't simply edit a profile? (profile
> editors such as PM 5 can not do what we want to do here)
> 
>> You now have a "color"
>> managed workflow for BO printing. I've used it, it works, and makes
>> the print much better since everything now fits with in the BO
>> dynamic range, as well as its linearity characterists. No it isn't
>> for the average user, but it can be done. 14 day demo is available
>> from the Xrite web site, it's hidden pretty well, but can be found if
>> anyone is really interested.
> 
> I could not find it - if you know where it is, please let me know.
> 
>> Remember that your 4800 has been linearized at the factory, so you
>> should have it's nice linear output. That also measn there must be a
>> way for the "normal" to re-linearize the new pro printers (sorry the
>> 2400 may not be included).
> 
> Who knows but if it is linear already then I need not bother.  It is my
> understanding that printers are actually very stable devices (as opposed to
> displays) and so they don't really need relinearizing/recalibrating.  A
> profile is good enough.
> 
> So I only need to linearize if I use a driver/RIP other than the one Epson
> intended and this RIP will likely have a linearization feature - eg, QTR.

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