Homebrew PCBs

On Wed, 25 Feb 2004 05:11:56 -0500, Jeremy Taylor <jt@...> wrote:

> Dude, all this talk inspired me to shove a pcb thru the 4019 ... It 
> works.
> err - well mostly

I almost did it with a pcb too.
then i thought maybe it harms the fuser, and i only have on replacement, 
and i
really like the IIID.

> I don't think it matters if it shorts to ground, The whole corona wire
> assembly is metal. I believe the static charge is so influential that it 
> can
> overcome any grounding, It only makes the toner come off the drum. any
> substrate, Paper, copper, aluminum, or otherwise,  If it's between the 
> drum,
> and the discharge corona - it's getting toner'd
>

I think the copper isn't charged.
i think the corona wire can't charge it. i think it is at ground level.

BUT i think the toner comes off from the positive drum to the zero pcb, at 
least
a part, all by itself.

Maybe the result could be much better if we really put it on a isolated 
carriage
and charge it all up.


The fuser will most likely not have enough time to heat it well.
this is the reason why i suggested infrared heaters.
they are easy to install, and there is no danger that you smear the toner.

What i fear is the pcb will damage the drum, i think a slight distance 
would still work.
(e.g. if you tack on a thick paper with tape on a thin paper the printing 
still works on the
thin paper (where there is a step, and a small distance).

If you make a flat carriage it is easy to keep this distance (well, if the 
pcb is flat).

Good deburring is a mst here, and maybe even place a piece of tape over 
the edges.


See if you can get a picture, i fully understand the ney sayers, i was 
convinced too.

ST