Re: Fade Tests - "New" vs Old OEM 1270 inks

["Kenneth Carney" <kcarney@mmcable.com>]

<x-charset Windows-1252>Bob: Something I was wondering about, and it's probably an obvious point
that I'm missing.  Using Epson drivers for the new ink, the prints are not
even close to the old ink in color match.  I was able to cure that by
re-profiling.  For example, in looking at the before and after scans on Bob
Meyer's website, I assume he must have generated a new profile for the new
ink to allow such a close match to the old ink.  I wonder what variable is
interjected by using different profiles -or, maybe it is a non-issue if the
prints before fading measure exactly the same colors.

  -Ken Carney

----- Original Message -----
From: "Robert Snow" <rssnow@1starnet.com>
To: "Epson List" <epson-inkjet@leben.com>
Sent: Sunday, August 19, 2001 4:44 PM
Subject: Fade Tests - "New" vs Old OEM 1270 inks


> Listees:
>
> I just finished a fade test comparing the "New"
> OEM 1270 inks to the old OEM 1270 inks.  The "New"
> inks are those in the new packaging (big big box)
> with a lot number starting with "A", and made in
> Japan, China, or Mexico.
>
> The papers tested were Epson's Heavyweight Matte
> and Premium Glossy (of orangeness fame).
>
> These tests are sun-thru-a-window tests and are
> measured every few days, measured with a
> ColorMouse CMC2 and plotted in an Excel
> spreadsheet.
>
> The overall fade rates of HWM vs HWM and Prem
> Glossy vs Prem Glossy were about the same.  That
> is, the absolute value of CMY percentage change is
> about the same.  However, as opposed to Bob
> Meyers' findings, posted today, the "New" inks
> faded more evenly than the old inks.  The old inks
> showed much more cyan fading, particularly the
> Premium Glossy.
>
>  Please note that I did not subject these prints
> to a rich ozone source as was the case with
> Meyers' tests.  I was simply comparing the
> lightfastness of the two inks in my home
> environment.
>
> My conclusion, based solely on this first test, is
> that the new inks seem to last equally long as the
> old inks on these two much used papers, and the
> new ink indeed seems to be a new formulation, and
> shows less cyan fade in my environment, which I
> consider to be about average, if there is such a
> thing.
>
> I am currently also testing the Colorlife paper
> with the new inks, and am optimistic so far about
> its lightfastness and resistance to cyan fade.
> This test is not complete but so far, I have had
> these results:
>
> Fade % CMY:
> ColorLife                3%, 1% cyan
> Heavyweight Matte 4%, 1% cyan
> Premium Glossy    6%, 3% cyan
>
> Based on these rates, I'd have to guess that Epson
> is fairly accurate in rating ColorLife and
> Heavyweight Matte at about the same lightfastness.
> Please note that a full one-half of the Premium
> Glossy change is in the cyan!  Urp.
>
> I will update the list on the ColorLife test when
> the it is complete.
>
> bob snow
>
> WORTHWHILE LINKS:
> Epson FAQ Site: http://home.att.net/~arwomack01/
> Epson List Archives:
> http://groups.yahoo.com/group/epson-inkjet/
>
>
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