If you're talking about the standalone black ink cartridge, it IS the
printhead in itself. If this is the one that's not printing, it's probable
that the ink has dried up within the cartridge itself. If it's the unit
with the two separate cartridges, the small black and the small tri-color,
they fit into a unit called the BC-21e..... The BC-21e can be found almost
anywhere.... OfficeMax, OfficeDepot, Staples etc. It comes with the two
tanks included... but you can just not install them and use the ones you are
currently using, putting them into the new unit.
It could also be that the ink in the tanks you have has dried up after
non-use... but purchasing the two tanks separately is almost as much as the
new BC-21e which has two new ones anyway.
Amazon.com have them at quite a good price...
http://www.amazon.com/exec/obidos/t...28343-2239866?v=glance&s=electronics&n=507846
I know you love the printer, but it is an obsolete model now... and won't
run (at least not easily) in WindowsXP.
You might want to think about asking Santa for something a little newer and
faster for Christmas. Most newer Canon printers have separate tanks for
cyan, magenta and yellow and therefore are far more economical if you print
a fair amount of color. Instead of replacing one tri-color tank, you replace
each color separately... so if you know you print more (eg) magenta than any
other (for some reason it's usually the most often used color), you just buy
one magenta tank... if you have tri-color tanks you have to replace the
whole unit when you may still have plenty of yellow and cyan.
Just a thought there. If you're happy with the BJC-5000, by all means
replace the print head.
Cari