开云体育

Hello to all!!!
I have asked this question on the picbasic list but no answers.
a couple of thought but !!!!
now I ask all of you on the homebrew board.
instead of transfers from laser printer to copper.
how about just buying a thin copper sheet say 3mil or so.
then run the copper through the laser printer and print your art work.
once that's done laminate the copper to a fiberglass board.
then etch as normal.
would this work????
does anyone see any problems with this?
or the question should be will the laser printer print to copper sheeting??
thank you
regards
Victor Faria

I would worry a lot about the drum getting scratched.
The copper would just have to get bent up very
slightly on an edge and you'd ruin the expensive drum.

A friend of mine used to use a laser printer to print
directly on PCB. It was some huge old thing that had a
board straight paper path. He very thoroughly deburred
the edges first.

How about those wax thermal/resin printers that print
right onto CDs? You'd only need a single color. You'd
have to either make your PCB the size and shape of a
CD or make a carrier.

Or maybe there is a market for a modified CD printer
like this. Make sure you get one that is not inkjet
and does not require special coatings. I found one for
about $2500 that is wax thermal ribbon and does not
require coated CDs. It is called the Primera Inscripta
and it is 610x305 dpi and does a CD in 5 to 10
seconds. I know, not 600dpi which is what common
wisdom says your laser printer should be for toner
transfer, but this way you don't have the transfer
step that causes lines to mush out.

It is only two colors (at once) but who cares? You
only need one color, and you can flip it over and
print the component layout.

Docs say you can take it out of the case and fit it in
a drive bay, so you could do PCB printing with zero
desktop space!

OK, who's gonna by me one to try this out? ;')







Here it is for only $2075!



Y'know, you all missed my birthday, but Christmas is
coming up soon... :'>

Steve Greenfield

--- victor Faria <victorf@...> wrote:

Hello to all!!!
I have asked this question on the picbasic list but
no answers.
a couple of thought but !!!!
now I ask all of you on the homebrew board.
instead of transfers from laser printer to copper.
how about just buying a thin copper sheet say 3mil
or so.
then run the copper through the laser printer and
print your art work.
once that's done laminate the copper to a fiberglass
board.
then etch as normal.
would this work????
does anyone see any problems with this?
or the question should be will the laser printer
print to copper sheeting??
thank you
regards
Victor Faria

__________________________________________________
Do You Yahoo!?
Send your FREE holiday greetings online!

instead of transfers from laser printer to copper.
how about just buying a thin copper sheet say 3mil or so.
then run the copper through the laser printer and print your art work.

just tested this and it dosent work so well

I used 'Slug & Snail' tape its an adhesive backed copper foil
sold in the garden dept at some stores (Seattle area)
placed a small strip on a sheet of regular paper and ran a
test page on an HP laserjet 1200 (nice printer for toner transfers BTW)

got some of the letters,but many dropouts and the toner lifted off onto
the rolls and re-deposited itself further down the page (smear)
a second test page without the tape came
out clean and sharp ,so no damage done :-)

Brian

--- Brian Pitt <bfp@...> wrote:

instead of transfers from laser printer to copper.
how about just buying a thin copper sheet say 3mil

or so.

then run the copper through the laser printer and

print your art work.

just tested this and it dosent work so well

I used 'Slug & Snail' tape its an adhesive backed
copper foil
sold in the garden dept at some stores (Seattle
area)
placed a small strip on a sheet of regular paper and
ran a
test page on an HP laserjet 1200 (nice printer for
toner transfers BTW)

got some of the letters,but many dropouts and the
toner lifted off onto
the rolls and re-deposited itself further down the
page (smear)
a second test page without the tape came
out clean and sharp ,so no damage done :-)

Very brave, foolish, or got an old cheap laser
printer. ;')

Foreseeable, I suppose, as the fuser roller is only
sized to heat up at most a thick sheet of paper, and
paper has very little heat capacity so it doesn't take
much to heat it to 400F. Copper, on the other hand,
takes a lot to heat up. Think about how long you have
to hold the iron or heat press on the board, and some
recommend preheating the board. I can only send thin
boards through my non-modified laminator.

I suspect my friend's laser printer directly on PCB
worked because it was very old and likely overpowered.

Steve Greenfield

__________________________________________________
Do You Yahoo!?
Send your FREE holiday greetings online!