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Digital BW, The Print

Index last updated: 2026-04-28 22:56 UTC

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Re: [Digital BW] Re: Nanochrome short term fade test measurements.

2006-02-01 by Carl Schofield

Sorry, forgot that the Nanochromes were missing the LK in the 220  
printer.

Not immediately obvious what you were doing.  So, these were printed  
QTR calibration charts at Limit=100.  The LK data appear to be  
missing from the HPRS Nanochrome density data file, based on your  
array description.  I didn't look at any of the other files yet.

On Feb 1, 2006, at 2:08 PM, Greg wrote:

> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Carl Schofield
> <scho@m...> wrote:
>>
>> But we need some row labels to be able to interpret the data.
>> Example, the CMYV density values for HPRS are in two blocks of 25
>> rows each.  The columns are clearly labelled as CMYV, but what do
> the
>> rows correspond to?
>>
>
> white then K, C, M, Y, lc, lm, lk in 25%, 50%, 75%, 100% from QTR
>
> Obviously the R220 will not have the lk row. And only the first
> measurement is white, there is no other measurement of white per
> paper.
>
> Sorry, I thought that was a standard QTR chart that most would be
> familiar with. The Lab values show the differences much more clearly,
> as there might have been a few instances where the density increased
> or stayed the same with sun, but the color changed.
>
> Note also that the prints look very similar when compared side by
> side, with the exception of EEM paper white which I noticed
> immediately.

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