Homebrew PCBs

does anyone have any info about the photo Resist UV Spectrum range for "Kinsten Presensitized" PCB's ?
I would like to look at this Laser/ UV LED in more detail , speed is not impotant right now but to get it working first will be nice ...
Thomas


  ----- Original Message ----- 
  From: sciciora 
  To: Homebrew_PCBs@yahoogroups.com 
  Sent: Tuesday, October 05, 2004 8:31 PM
  Subject: [Homebrew_PCBs] Re: OHP Film & Laser Printers, UV Laser Diode



  I did some thinking about this as well.  I found on this list that
  some pre-sensitised PCB are sensitive in the range of 340 to 400 nm,
  and peak at about 360nm.  The LED that I bought has an output at
  405nm.  As far as power, just move slower!  A co-worker's friend, who
  works with optics as a consultant, said it wouldn't be hard to pick
  some lenses and fiber from Edmund scientific to foccus most of the
  LED's light into the fiber.  And if I were more serious I might be
  able to get him to help me design something, but due to too many
  projects, trying this will most likely just be a through experimnet
  for me...

  - Steven Ciciora

  --- In Homebrew_PCBs@yahoogroups.com, "Leon Heller" <leon_heller@h...>
  wrote:
  > 
  > >From: "Mike" <yahoo@d...>
  > >Reply-To: Homebrew_PCBs@yahoogroups.com
  > >To: Homebrew_PCBs@yahoogroups.com
  > >Subject: [Homebrew_PCBs] Re: OHP Film & Laser Printers,  UV Laser Diode
  > >Date: Sun, 03 Oct 2004 00:41:20 -0000
  > >
  > >
  > >
  > >--- In Homebrew_PCBs@yahoogroups.com, "Thomas" <teecee@c...> wrote:
  > >
  > > > This UV Laser thing has me thinking (dangerous I know)  so slap me
  > >for bringing this up !! but during a few search's I come across some
  > >info that uses a UV Laser Diode in a DVD-R Burner & goes on about
  > >Photoresist being part of the Layer that records the Data, if its
  > >similar stuff or not i dont know. Maybe the UV Laser is to small and
  > >possible the focal point could be changed  to get a wider beam for
  > >Exposure, sounds easy enough but I bet it aint !!
  > >
  > >Possibly more useful than Lasers, Non-laser UV LEDs are available on
  > >Ebay etc for around 10-20c each. They seem to work fine directly off
  > >2x1.5v AA cells. The beam is divergent at an angle of approx 20
  > >degrees on the ones I have. I would imagine that it would be
  > >focussable with relatively inexpensive lenses too, or get a bunch of
  > >fibre optics and adapt an old dot matrix printer :o)
  > 
  > 
  > The wavelength needs checking, to make sure it is correct. The power
  also 
  > needs to be checked, I don't think that UV LEDs will have enough power.
  > 
  > Leon





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