Archived from groups: comp.periphs.printers (More info?
I've had something similar hapen on the BCI-3y ink tank (it's
actually not a cartridge) on an older BJC-6000. But it was
always after using the cartridge for a period of time and
was corrected by replacing the actual cartridge part
(BC-30 or BC-31). I just replaced the cartridge; it
had lasted about two years. I don't know whether the same
issue arises for the newer i-560.
> I just changed the BCI-6Y cartridge on my i-560 for the first time. I
> noticed that the felt pad at the output port was almost black and the
> dark color had migrated up into the cartridge (see attached image). Is
> this normal? If not, what could cause it?