Digital BW, The Print

At 21:18 -0300 2.3.2003, André Vallejo wrote:
*******************************************

>Sorry,just found the droplet size info: 4 picoliters. Interesting....
>

Try calculate a bit:

There is a general problem of inkjet printing - to put enough ink on 
paper as fast as possible - the IRIS printer are able to put on one 
place as much as 96 pl (in 3 pl steps!!!) - not the eject the 
smallest drop. It is a problem of max. density you may print out.

Epson heads use variable size drops - the largest drops are about 22 
pl. If you use ONLY 4 pl drops you need 5.5 times faster printing 
(resolution, nozzles, ...) to put the same amount of ink on paper. 
And rich the same density.

So 512 nozzles per ink with fix drop size 4 pl are comparable with 96 
nozzles with variable size dot technology.

Martin
--