This might seem like a silly point, yet you are handling a full ignoramous (me!
) in these concerns. Do I comprehend the right way 
that a printer drum is a substitute to a toner cartridge but with a lot 
greater turnout? This does not seem to be specific in your post 
if it is the case. Please clarify.
Kind regardsJim. Paper Jams Paper jams is just one of a lot of usual trouble 
which one encounters. A paper jam can easily develop as 
a result of range of factors.