Digital BW, The Print

On 3/8/03 10:31 AM, "Paul Roark" <paul.roark@...> wrote:

> I have sent to MIS a slightly revised toner mix that optimizes the UC VM 4.3
> tones across many of the papers that I think will be used in the near
> future.  The only differences from VM 4.3 are minor changes in the toner to
> get a better tone distribution across more papers.
> 
> The target tone is a mild "selenium-neutral."  The X-Rite spectrophotometer
> readings in the mid-tone for the "selenium silver print" look should be C =
> X, M = X+1, Y = X.
> 
> (Note that there will be density variations among different papers, as
> usual.)
> 
> The X-Rite readings at the 50% patches of test strips printed with UC VM
> 4.3.5 are below.  These are after a day of "curing," although most reach
> this tone in a short time.  I used the 1160 and standard vm 1160 "nc" curve,
> except for Eclipse, which prints colder than the other papers. (The decimal
> point has been omitted in these readings.  The readings are in the order C,
> M, Y.)
> 
> EAM/EEM - 64, 65, 64
> 
> Epson UltraSmooth - 60, 61, 60
> 
> (This paper will probably take a very large
> part of the cotton paper market.)
> 
> PhotoRag - 59, 61, 61
> 
> Epson Premium Luster - 58, 58, 58
> 
> Epson Photo Paper - 65, 66, 66
> 
> Ilford Smooth Gloss - 59, 59, 58
> 
> (This and the Pearl versions are
> reasonably-priced, no-bronze sleepers.)
> 
> Museo - 55, 55, 55
> 
> (Crane is in trouble if it can't do better.
> Epson Smooth Fine Art is the same.)
> 
> Eclipse Satine Bright White ("mw" curve) - 56, 58, 56
> 
> (Has anyone purchased the formula
> out of bankruptcy?  If UltraSmooth is priced
> low, Eclipse is dead meat anyway.)
> 
> My fade test results of 4.3 was as good as it gets.  The "nc" curve, EEM 50%
> patch was 61, 61, 60, 61 (c, m, y, visual order) at the start and 61, 61,
> 61, 61 after 300 hours.  The warm curve had the same pattern -- no visual
> fade and 0.01 unit of yellowing.  I'm told carbon always warms slightly, and
> this is about the minimum I've seen in any carbon inkset.  It's totally
> acceptable and many times better than any of the older quad inksets.
> 
> I've had not clogging with these inks, but I'm not in a super-dry or
> high-elevation climate.
> 
> So, I'd say this makes a state-of-the-art variable-mix/tone inkset that is
> both matte and RC paper compatible, depending on which black ink is used.
> All of the existing vm curves should work fairly well, but I have not tested
> them.  I'd assume MIS will soon market the inkset, but I don't know what
> name they'll use or when it will be on their website.
> 
> I hope it works for you.
> 
> Paul
> 
> 
> 
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