Twas only the one in the cartridge. Brother, for example, have a separate unit. About $100 part, so the lad in Staples told me yesterday.
My lint-free cloth experiment was based on trying to revive what was already a dead duck. What's so odd is that it was
so good for two sheets.
It seems there is a scraping strip that wipes this roller and dumps the residue in a waste bin in the cartridge. I never knew that.
It seems some people clean the sensitive surface, but what I was surprised about is that it needs to be kept in a low light level to avoid
permanent damage. So much for my Anglepoise fluro and spotlight combo.
What's naggin' at me now is whether the supplier of my $50 part will change the roller. I doubt they can at that price.