What filter to use for HP Deskjet 520?

[Yi-ping Chang <yxc14@psu.edu>]

Hi, guys:

I got an HP DeskJet 520 from a friend of mine moments ago.  I tried it
out, using 'dj500-filter' of magicfilter package.  It seemed to function
well (paper is loaded correctly, the printing head is moving), but
nothing printed out.  I am not sure if I chose the wrong filter, or just
the ink cartridge has dried out.  The only other choices maybe possible
are 'deskjet-filter', 'dj500c-filter', and 'j550c-filter'.  Can anybody
tell me which one definitely will work before I spend money on a new ink
cartridge?

Thanks!

Yi-ping Chang