Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Ernst Dinkla 
<edinkla@...> wrote:
> ... 
> I see enough difference however between the 9000 quad prints 
> with 11 picoliter droplets compared to the Z3100 4-6 
> picoliter droplets. ...


Just to set the record straight, and while I don't dispute that one 
can see differences in output, it appears the 7000-9000 series has an 
8 picoliter fixed droplet size, compared to the 7600-9600 smallest 
droplet size of 4 picoliters.

See http://www.imaging-resource.com/NEWS/1020264609.html
and http://www.inkjetart.com/news/archive/IJN_02-20-01.html 

I think it was the 3000 that had the 11 pl droplet.

I suspect the differences in output are more visible on glossy paper 
than matte paper also.


> It is only with more heads used for 
> black that the smaller droplet will stay. ...

I'm not sure if this is the same issue, but Joe at Bowhaus indicated 
to me that the huge number of nozzles the thermal heads allow is a 
major advantage to that technology.  This had less to do with seeing 
dots than seeing microbanding and raw speed of printing, which is 
critical for a business setting where time is money. 

But, in any case, for my uses the 7500 and with the 6 dilution 
inksets seem very capable; I think the older 7000-9000 series 
machines can be very good bargains.

Paul  
www.PaulRoark.com