Digital BW, The Print

This is starting to sound like Futures all over again, only in monochrome.
   
  TB
  

wkm@... wrote:
          Where have I heard this "bws" stuff before. Hmmmmmm

Walt
>-----Original Message-----
>From: Steve Kale [mailto:stevekale@...]
>Sent: Friday, March 2, 2007 02:28 PM
>To: DigitalBlackandWhiteThePrint@yahoogroups.com
>Subject: Re: [Digital BW] Re: New graduated black inks - beta testers wanted please
>
>Ding, ding, ding round 2...
>
>
>
>From: failedthespian <failedthespian@...>
>Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
>Date: Fri, 02 Mar 2007 23:41:41 -0000
>To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
>Subject: [Digital BW] Re: New graduated black inks - beta testers wanted
>please
>
> 
> 
> 
>
>Steve and Paul
>
>Our inks are tested to an internationally accepted standard; the Blue
>Wool Scale (BWS). This is an internationally accepted ISO standard that
>has been in existence for over eighty years; whereas the Wilhelm test
>has not. The BWS test is in use by the worlds' most respected
>institutions - whereas the Wilhelm test is not.
>
>The BWS does not predict fade properties in terms of years. Most
>informed students will understand that due to reciprocity failure it is
>disingenuous to claim that a particular ink will have a fade free life
>of a certain number of years. And yet organisations like Wilhelm
>continue to churn out figures conferring that this ink or that ink has a
>life expectancy of X. This is rubbish!
>
>We know that certain inks that have been accredited with having a life
>of seventy years, and yet the magenta and light magenta components of
>these ink sets failed to get past BWS2. This is a truly dreadful state
>of affairs.
>
>The Fine Art Trade Guild sets a minimum standard of BWS6 for all inks
>that are to be used for prints intended to be displayed. We know from
>our own BWS testing that a considerable number of so called "archival"
>inks accredited by Wilhelm would fail this basic test.
>
>I trust this answers your point.
>
>Paul Banks
>Image Alchemy Ltd
>
>--- In DigitalBlackandWhiteThePrint@yahoogroups.com
><mailto:DigitalBlackandWhiteThePrint%40yahoogroups.com> , "Paul Roark"
><paul.roark@...> wrote:
>>
>> Hi Steve,
>>
>> It sounds like we're all interested in some of the same things.
>>
>> > I'm also eternally curious, so I'm interested,
>> > but I'd like more info first.
>>
>> >...
>>
>> > At least 50% of my printing is sepia, and I mean
>> > deep sepia, not the carbon-ink warmtone...
>>
>> I'm going to put LC, LM and Y, (along with K, LK and LLK) in a 220 at
>Golden
>> Trout workshop. I think this arrangement allows the full range of
>what most
>> will want and be very flexible. I think we'll end up generating a lot
>of
>> profiles that will be useable in a wide range of printers with these
>> standard inks.
>>
>> How are you generating your deep sepia?
>>
>> With the old sepia I mixed for the UT2/7 toners, it was 8% Y, 8% M,
>and the
>> remainder the UT-LC (light carbon, about 50% LK).
>>
>>
>> >F) You claim a fade resistance of ISO 105 - B02 standard of BWS 7.
>> >What does that mean in either Wilhelm or real-time years,
>> >and where can I find more info on the standards?
>>
>> It's hard to compare inks unless they are subject to a comparison test
>on
>> the same paper and in the same fader at the same time. Wilhelm and
>RIT are
>> trusted third parties that can probably keep their variables under
>control,
>> but for most a comparison to a known sample like an Epson or MIS ink
>is what
>> I want to see. The test conditions also, of course, need to be
>disclosed so
>> that we can evaluate the various factors that might influence the
>outcome.
>>
>> >D) Your DIPS continuous inking system ...
>>
>> I suspect all of these CIS/CFS systems are subject to the same
>problems I've
>> experienced and measured in the large format printers. Only regular
>users
>> should consider them with blended B&W inksets. For high volume work
>they
>> do, however, make sense. If Epson manages to cut off our carts, all
>of us
>> third party ink users may be using them. That's really no problem,
>> particularly if we use a non-blended, standard ink approach.
>>
>> With respect to CFS/CIS designs, I do like the idea of the dampers
>being
>> between the tubes and the heads like in large format printers. These
>> easy-to-change, cheap items have screens in them that can catch the
>clumps
>> before they get into the heads.
>>
>> Paul
>> www.PaulRoark.com
>>
>
> 
> 
>
>
>
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