Hmmm, I wonder if post toner transfer, exposing the PCB to these
vapors would improve pinholing by causing the toner to flow a little.
Worth a try on my next board.
--- In
Homebrew_PCBs@yahoogroups.com, "Zoran A. Scepanovic"
<zasto@y...> wrote:
> Hello Leon,
>
> Monday, July 25, 2005, 4:48:51 PM, you wrote:
>
> LH> ----- Original Message -----
> LH> From: "hjf2k2" <drgenio@h...>
> LH> To: <Homebrew_PCBs@yahoogroups.com>
> LH> Sent: Monday, July 25, 2005 3:42 PM
> LH> Subject: [Homebrew_PCBs] black photoresist masters - darkening
>
>
> >> Hi all, I'm still working on the serigraphy emulsion system. I
think I
> >> need to increase the exposure time to burn the emulsion a little
> >> more. The problem is that I'm using transparencies with toner as
>
> epa<SNIP>
>
> LH> A similar technique I've heard of is to expose the transparency
to some
> LH> solvent fumes.
>
> LH> Leon
> LH> --
> LH> Leon Heller, G1HSM
> LH> leon.heller@b...
> LH> http://www.geocities.com/leon_heller
>
>
> You have good ears!
>
> Tonner can be exposed to paint thinner vapours (something that
Stefan do not like), to acetone vapours or even vapours of solvent for
PVC based colors for serigraphy
>
> --
> Sincerely,
> ø¤º°``````````````````````````````````````````````````````°º¤ø
> ZAS ElMed | mailto:zasto@y...
> | http://www.zas-elmed.co.yu
> | Tel/Fax: +381 11 344-0748
> |
> Zoran A. Scepanovic | Mob: +381 63 609-993
> º¤ø,¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸¸,¸¸¸¸¸¸¸¸¸¸¸¸¸,ø¤º
>
> ∗∗∗∗∗∗∗∗∗
> Pieces of seven! Pieces of seven! (Hrm, parroty error)
> ∗∗∗∗∗∗∗∗∗
>
> [Non-text portions of this message have been removed]