Digital BW, The Print

Hi Roy,

Thanks for the info. If you have a couple of curves already made utilizing
more toner I would really appreciate receiving them. I know that you include
an intro to building your own curves, but I am not a technician and I really
do not understand the concept. I think I understand, at the highest levels,
the theory behind curve shape and transitioning the tones, etc., but I'm
sure that I would mess things up if I tried to build my own. If I could post
a "wish list", what I'd like to see is a couple of curves producing cooler
results than your Sepia 3 curve. This curve, on my 1160, seems to produce
what looks like dead neutral to my eye. Expanding the range to a couple of
curves generating cooler (bluer) results--same "color" spacing as your other
curves--would be great for printing snowscapes or any image where a cool
tonality is desired. I've always found Paul's neutral-cool curve to be about
a cold as I would go and, actually, that one is a little too cold. As with
everyone doing quadtone printing this is all a matter of personal taste...I
believe Jerry Olsen uses Paul's cooler curves all the time and loves 'em!

I know that print speed is related to the Gimp drivers. Sorry if I intimated
in any way that the QuadToneRIP was responsible. It's not! I just wanted to
mention to John that speed might be a consideration if he went with the
Gimp/QuadToneRIP combo.

Alan Huntley

----- Original Message -----
From: "Roy Harrington" <roy@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Monday, March 31, 2003 4:46 PM
Subject: [Digital BW] Re: Harrington QuadTone RIP


> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "A.
> Huntley" <leicam6@a...> wrote:
> > John,
> >
> > I have been using the Harrington QuadToneRIP on a Mac (OS
> X / Gimp Print)
> > with my Epson 1160 printer and "old" VM inks. Absolutely
> beautiful results.
> > The only two things that I've really noticed compared to my
> former
> > workflow--OS 9.2 and Roark curves--is the following:
> >
> > 1. The range of "color" using the Harrington curves is not as
> wide as Paul's
> > curves. That is, using Paul's curves one can produce very cold
> basically
> > blue prints to very warm brown (the natural warm color of the
> pigment inks)
> > prints, whereas the Harrington curves produce prints from
> what I'd call dead
> > neutral (say half way between Paul's nc curve and the next
> warmer curve) to
> > very warm brown (same as Paul's warmest curve.)
> >
> > 2. Prints take about twice as long to print. I'm sure this has
> everything to
> > do with the Gimp drivers and nothing to do with the
> QuadToneRIP, but just
> > thought I'd mention it. If you think Epson printers are slow
> using Epson
> > drivers, you ain't seen nuttin' yet! Speed of printing is not an
> issue for
> > me, but certainly would be for anyone in a production (or close
> to it)
> > environment. For example, printed an A3 size quad the other
> day...40
> > minutes!
> >
> > Realizing this info has nothing to do with the new VM 4.3 inks
> or the 7500,
> > but hope you find it somewhat useful.
> >
> > Alan Huntley
> >
>
> Alan & John,
>
> The range of color for the curves I did for the 1160 were just
> based on what I liked for my VM-Sepia inks.  It would be quite
> easy to do a couple more curves with significantly more
> toner ink in them.   I'd be glad to email you some if you'd
> like.
>
> The speed of printing is totally a function of the gimp-print
> drivers.   The drivers for the 1160 have 3 different modes for
> 1440x720 printing (Bidirectional, Unidirectional, and Highest
> Quality).  I've mostly used HQ setting and it's probably the
> slowest, I imagine bidirectional (the first one in the list)
> would be faster.  Also there are quite a few 720x720 modes
> which may give good enough results.
>
> Since InkJet Control also uses gimp-print based drivers I
> wonder if anyone using that could comment on speed of
> printing there.
>
> Roy