Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "javaguy11111"
<javaguy11111@...> wrote:
>
> I was reading some research papers on inkjet printing organic devices.
> Like alot of people here, they have problems with the ink spreading
> before drying is complete. One thing that is done to minimize
> spreading is to heat the substrate(board) to make the ink dry faster. 
> An example paper is
> http://www.eecs.berkeley.edu/~viveks/Papers/H8_3MRS03.pdf, but 
> the technique is mentioned in serveral papers.
> There are some issues with the technique such as causing excessive
> evaporation at the printhead, but it seems there are ways to work
> around it.
> I do not have anything setup to do this kind of experimenation myself,
> but it may give someone else some ideas.
>

HP 1200C inkjet printers (big old ones with i860
CPUs and megs of memory) had 2 heaters in them.

One big resistance wire coil just below the
print head path and a big flat warm ribbon that
the paper past over before exit.

Also some of the big inkjet plotters have a fan
that blows hot air at the ink just behind the
print heads.

sounds like a lot of modification to an R220
though.