Datacolor User to User Support Group.

That's specificly why I was obliged to create the rather awkward term  
"two gray" printer; as HP has taken advantage of the term "three  
black" printer to obscure the fact that this model does not have two  
grays, and does not work in a manner similar to printers which do. Two  
blacks, to fracture a phrase, do not a gray make... The 9180 isn't bad  
at B&W in it's grayscale mode, though without tonality control, but it  
does not offer the same results in color mode as a true two gray  
printer.

The extended grays may map the densities in more detail with the 9180,  
but they can't adjust the color tint in it's B&W mode, and it's color  
mode is not a two gray system, so they can't work quite the same magic  
as on a true two gray system.

C. D. Tobie
Global Product Technology Mngr.
Digital Imaging & Home Theater
Datacolor.com
CDTobie@...

On Mar 29, 2009, at 5:13 PM, "capesamblue"  
<martin@...> wrote:

> In the Spyder3Print instructions there is section called  
> "manufacturer's inks, manufacturer's color driver". It states
>
> "This is an ideal method for black and white printing using the  
> latest two-gray printers" there is then a list of printers but it  
> goes on to say "the HP B9180 is not a two-gray printer, so do not  
> qualify for the category described above; their B&W mode is fixed,  
> single tone, neutrality defined by the paper involved. So these  
> models offer no tintability, without using color mode. Their color  
> mode creates its light grays from Light Cyan, Light Magenta, and  
> Yellow, as earlier Epson models did. This is why have have not been  
> included in the list above. Spyder3Print .... only offers gallery  
> quality black and white for "two gray" printers, or printers fitted  
> with special black and white inksets."
>
> I'm puzzled by this. I've just bought the Spyder3Studio and a HP9180  
> but the 9180 clearly has 3 inks: a photo black; matte black and  
> light gray. Surely that makes it at least a "two-gray" printer.Are  
> the instructions incorrect?
>
> Am I right in assuming that the best quality B&W prints on my  
> printer/Spyder3 will be achieved by using a Spyder generated colour  
> profile which has been supplemented with the extended gray  
> measurement chart, then using the application to apply that  
> profile?  Am I also right in assuming that the extended gray chart  
> is not itself a means of producing a black & white only icc profile?  
> It seems from the instructions that Spyder3Print profiles are either  
> color profiles made by reading only the colour patches; or colour  
> profiles that will make a better job of B&W, created by reading the  
> colour patches AND the extended gray chart.
>
>
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
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