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Digital BW, The Print

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Re: [Digital BW] Re: Mixing multiple shades of b&w ink from photo Black

2008-10-12 by Michael King

You can print with the matte inks onto satin or semi-gloss no problem.
You just need to finish the print with either a glop over print or
spray varnish, to get rid of the bornzing.
Probably best to give it several light coats of glop or varnish.

I've experimented with this on IGFS with Cone inks and it works great.

Mike


2008/10/12 Pacific New Media <panmedia@...>:
> Thanks Paul. I will start to set up the ink and printer using your
> suggestions.
>
> I find there is still a need for B&W inkjet printing onto a more glossy
> paper than pure matte surface - satin or semi-glossy. Sometimes I feel
> we may be should revisit dye-based ink for b&w printing.
>
> Thanks,
> Philip
>
> pr_roark wrote:
>>
>> Philip,
>>
>> > I was reading your writing about Carbon-6 just a
>> > few minutes ago and starting realize my example of mix
>> > might be too dark.
>> >
>> > So the better mixes can be:
>> > 3 shades: 100% PK, 33% PK 10% PK
>> > 4 shades: 100% PK, 33% PK, 10% PK, 3.3% PK
>> > 6 shades: 100% PK, 33% PK, 16.7% PK, 8.3% PK, 4.2% PK, 2.1%PK
>> >
>>
>> In the C6 mix I used 33% MK for the darkest mix. This was selected due
>> to the ease of mixing. It would allow those who did not have scales
>> more easily mix the inkset. Since it was close to the usual
>> darkest "traditional" B&W dilution of 30% MK, I figured it's work well,
>> and it does in older printers. However, note that I've reverted to a
>> 30% Eboni mix for the k3 printers. It turns out the 33% is too dark
>> for k3 printers and some papers. It results in inadequate separation
>> or even posterization in the deep shadows when the Epson driver is
>> used. It appears this is caused by the k3 gray substitution
>> algorithm. The 33% mix works fine in the k2 printers.
>>
>> This may not affect you at all with PK and if you're not using the
>> Epson driver, but it illustrates something important.
>>
>> While 30% is the usual dilution of PK to make LK, etc., and 30% MK is
>> the "traditional" B&W darkest mix, this 30% mix is a considerably
>> higher load than LK. The LK density can be mixed from MK if about 18%
>> MK is used.
>>
>> In terms of print density, however, to put the LK (18% MK) in
>> perspective, recall that the dilution-ratio to print-density curve is
>> very non-linear as the pigment load gets high. Actually, this curve is
>> very non-linear at both ends. That explains how a 2% dilution can
>> cover about 25% of the print range.
>>
>> Paul
>> www.PaulRoark.com
>>
>>
>
>
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