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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