[petrus]

hi friend,
i have one of the konica minolta di550 recently i have change the developer.after 40k copies,the dveloper in the dv tank empty and teh copies become blur.
there are no dv dropping around the dv assemblly.even below the dv tank.i have notice that the copies paper have sandy touch on it.what i guess is the developer transfer to drum surface and some of it stick to the paper and some to the waste toner collection.

but , what problem that make this happen? either the main charger charge to high or any thing else?

thanks.