Digital BW, The Print

On 06/12/2012 15:09, Mark wrote:
> Presumably, HP's grayscale mode is similar to Epson ABW in maximizing use
> of the photogray colorants and reducing other colorants to a minimum in
> order to achieve the desired tint, in this case a very close "pure neutral
> gray" under D50 illuminant.

No, HP grayscale mode uses only the blacks and gray/s. Colour channels are 
turned off. There is no control of tint; the tint you get is that native 
to the black and gray inks alone on the particular paper used.

If you print grayscale in RGB mode then the colour channels are invoked as 
well, but there is no ABW-like adjustment available, tint has to be 
adjusted in PS.
-- 
Regards

Tony Sleep
http://tonysleep.co.uk