Flash point, laser fuser and lubrication - test-drb@ccmp.vtda.org

13 Apr 2004

On Apr 13, 14:43, chris wrote:
...
  >Correction.  I just learned that the flash point
for 3-in-1 oil is 305
...
  >degrees Fahrenheit.  If I recall correctly, the
Laserjet II's fuser is
...
  heated to 320
degrees F., so... still, not good. 
 put a little on a non flammable surface (like concrete), just a small
 amount (comparable to what you put on the fuser)... touch a match to it.
...
  If it doesn't ignite, you should be good to go on
the fuser. Matches burn
...
  hotter than 305 degrees. (do NOT do this test on a
flammable surface or
...
  with anything like a cup or cap of oil... given enough
fuel/O2 mix, the
...
  match will ignite the oil, and not in a very nice
manner) 
That's a very poor test, and the quantity is not what matters to the
chemicals partaking (or not) in the reaction :-)   The local heat
capacity is.  The concrete keeps the oil much cooler than is required
to *sustain* burning, and the hot fuser is not comparable to a slab of
cold concrete.  Pour half a cup of petrol (er, gasoline) into a bucket
of water, drop in a match, and watch the match go out...

-- 
Pete						Peter Turnbull
						Network Manager
						University of York