Homebrew PCBs

If I remember right a clean PC board spin coated with a gelling agent 
and ammonium or potassium bichromate and then painted with methanol or 
methyl alcohol in an ink jet should make a water insoluble track that 
can be developed to more resistant coating after the the unhardened 
stuff is removed.

The date of discover was a lab spill in 1958 or 1959.

Gordon  W5RED

GiuseppeG. wrote:
>
> You guys might like to see this:
>
> http://www.freepatentsonline.com/5849066.html 
> <http://www.freepatentsonline.com/5849066.html>
>
> Quite close to the inkjet technique described in this forum.
> There is also a nice mention at the bottom about the composition of 
> the Epson Glossy Paper.
>
> [Non-text portions of this message have been removed]
>
> 
>
> <http://groups.yahoo.com/group/Homebrew_PCBs/message/18792;_ylc=X3oDMTM2OWNxc3BzBF9TAzk3MzU5NzE0BGdycElkAzQ1MDUzNjEEZ3Jwc3BJZAMxNzA1MDgzMjkxBG1zZ0lkAzE4NzkyBHNlYwNmdHIEc2xrA3Z0cGMEc3RpbWUDMTE4MTUzMzU2MgR0cGNJZAMxODc5Mg--> 
> <http://groups.yahoo.com/group/Homebrew_PCBs/post;_ylc=X3oDMTJxbXY1NmxpBF9TAzk3MzU5NzE0BGdycElkAzQ1MDUzNjEEZ3Jwc3BJZAMxNzA1MDgzMjkxBG1zZ0lkAzE4NzkyBHNlYwNmdHIEc2xrA3JwbHkEc3RpbWUDMTE4MTUzMzU2Mg--?act=reply&messageNum=18792>