It may be possible to spray a fine mist of acetone on the toner. The hope is
to reflow it so the holes close. When I overspray with Rust-Oleum Crystal
Clear Enamel, the solvent in it makes the toner look darker. It is my
understanding that this is because the toner reflows. But you can't use the
enamel in your application.
Rick
-----Original Message-----
From: gingery_machines@yahoogroups.com
[mailto:gingery_machines@yahoogroups.com] On Behalf Of Bob Butcher
Sent: Tuesday, September 13, 2011 7:24 AM
To: gingery_machines@yahoogroups.com
Subject: [gingery_machines] Re: new article available: Laser Printing to
Metal
The leakage of plating solution through the toner may be another problem.
Some laser printers tend to print a bunch of closely spaced dots instead of
a solid. I have had problems with this in the past on PCBs causing tiny
breaks in the circuit. Look at the toner with high magnification, perhaps
with back lighting to see if this is the problem. Sometimes this can be
improved by adjusting the printer for darker images, since often the default
is an economy mode that conserves toner. Another possibility is that the
metal being plated might have not been clean enough. On PCB's I usually
clean them with an SOS pad followed by Scothbrite and dish detergent. When
really clean water should run off in a sheet rather than forming beads. Just
a thought, it also could be what you said.
Bob
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