On 01/07/10 20:11, Tony Duell wrote:
  Err, yes... But if I am setting up the optics in
a laser printer scanner,
 I want to be able to dtect where the beam is (roughly) going and then
 tweak the lenses/mirrors to get it where I want it. 
 Indeed. It's even more useful to get an instant response when you're
 setting up the focus... 
Yes, of course you're replacing the laser, so you have to
re-focus/colimate the beam. Fortunately when I was assembly the CX
scanner, I on;y had to make sure the beak was going in the right places...
 Getting down to 0.08mm is going to be interesting, what with
 beam-scatter and fluorescence. And I really don't like the idea of using
 a focus-finder to set it up... viewing a laser through a magnifying lens
 seems like a really dumb idea to me, even with safety goggles. 
'Do not look up this laser beam with your remaining eye' :-)
When I have a chance I;ll dig out what schematics I have of the CX and SX
enginers and get copies to you...
-tony