Digital BW, The Print

Hi,
I read this on the MIS site:

'Some of the newer printers like the Epson 2200 may be able to spread two inks, black and light black, across the full black to white range without dots. It is being worked on now by a few of the digital B&W experts.'

I am unaware of a way of printing with only black and light black.

Has anyone done this?

thanks,
Richard
--
Portraiture and Location Photography
http://smallfield.vze.com
http://photos.smallfield.vze.com

  "I find that the harder I work, the more luck I seem 
  to have." 
  --Thomas Jefferson (1743-1826)