Homebrew PCBs

Some of you might find this interesting:

http://www.newscientisttech.com/channel/tech/dn11632-modified-ink-
printer-churns-out-electronic-circuits.html

It's an article about inkjet printers being used to print conductive 
traces, directly, onto many different types of materials, using a 
silver nitrate solution, followed a few minutes later by a reducing 
agent (they mentioned using a Vitamin C solution), and then washed with 
water to leave only the metal traces.

I haven't investigated it any further than that.  I just thought some 
of the people here might like to know about it.

- Tom Gootee

http://www.fullnet.com/~tomg/index.html

-

----- Original Message ----- 

From: "Thomas P. Gootee" <tomg@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Tuesday, April 24, 2007 5:26 AM
Subject: [Homebrew_PCBs] News article: inkjet printing conductors


> Some of you might find this interesting:
>
> http://www.newscientisttech.com/channel/tech/dn11632-modified-ink-
> printer-churns-out-electronic-circuits.html
>
> It's an article about inkjet printers being used to print conductive
> traces, directly, onto many different types of materials, using a
> silver nitrate solution, followed a few minutes later by a reducing
> agent (they mentioned using a Vitamin C solution), and then washed with
> water to leave only the metal traces.
>
> I haven't investigated it any further than that.  I just thought some
> of the people here might like to know about it.

We already know about  it, it's been mentioned three times. I was the first. 
8-)

Leon

> > It's an article about inkjet printers being used to
> print conductive
> > traces, directly, onto many different types of
> materials, using a
> > silver nitrate solution, followed a few minutes later
> by a reducing
> > agent (they mentioned using a Vitamin C solution), and
> then washed with
> > water to leave only the metal traces.

why minutes later?
wouldn't it work with just two 'colors' mixed dynamically
while printing?

alternate: why not print the nitrate traces, let dry and
dip the whole board into the reducing solution (sort of developing)?

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