Digital BW, The Print

John, the black carts are interchangeable and reusable. However, your 
printer will go through a charging cycle of all inks when you change 
carts. While I have never seen the definitive figures, I always figure 
that this process uses around 10% of the ink in each cart. I change 
the blacks as infrequently as possible and ususally have a bunch of 
images to print when I do. No need to seal the carts, but storing them 
in the same position as when installed is a good idea



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "john794552" 
<jwillyfontana@...> wrote:
>
> I am needing to change from matt black to photo black ink cartridges 
> on my R2400, in order to try printing some digital negatives.
> My query is whether I can just swop them back when I need matt black 
> again? Do I need to somehow seal up the matt black cartridge while 
it 
> is out of the printer, or does it seal itself? I assume they must be 
> interchangeable as required, and not to be ditched once removed.
> Many thanks
> John Fontana
>