Paper Jam I was told that you can photo copy on both sides of the paper with the Sharp AR153E, but it frequently jams when I do so. It almost always jams at the fuser assembly. It also jams when I print a lot of pages (10 or more at one time). Technician says that it's the paper, but I use other kinds of paper and it does the same. Also is there anyway to clean the fuser assembly? The black (drum looking thing) has some toner residue from the jams.

No Not necessarily they may be using an alternative generic part most likely Katun, not a bad brand, can last as long as the original. The important thing is it doesn't have scratches or looks like it is worn, the coating has to be uniform and looks ok.

If the toner is not adhere it could be

the Thermistor (controls the heat of the fuser roller),

defective toner,

moist paper, try crumbling it in your hands does it sound crisp? also bring a sheet of paper to eye level so you are looking at the whole surface of the paper do you see any bubbles or wet spots? (moisture), flip the papers in the tray . No Not necessarily they may be using an alternative generic part most likely Katun, not a bad brand, can last as long as the original. The important thing is it doesn't have scratches or looks like it is worn, the coating has to be uniform and looks ok.
If the toner is not adhere it could be
the Thermistor (controls the heat of the fuser roller),
defective toner,
moist paper, try crumbling it in your hands does it sound crisp? also bring a sheet of paper to eye level so you are looking at the whole surface of the paper do you see any bubbles or wet spots? (moisture), flip the papers in the tray .