[Waverley ARS] PCB Laser Paper

[Eddie Hanham]

Thanks Richard, that's exactly the type of  paper IJ84 I have been 
looking for the. The following article from VK5JST explains it see 
below from:

http://www.users.on.net/~endsodds/pcb.htm

Where did you get the paper Richard.

Eddie
VK2BEH


The Paper

The PCB pattern is transferred to the copper by re-melting the toner 
on the surface of the clay paper with a clothes iron so that it 
sticks to the copper. The paper behind the toner therefore has to be 
removed and this is accomplished by a process of soaking and gentle 
rubbing. Standard A4 paper will not work because during printing, the 
finely ground PVC toner particles have been melted into the wood 
fibres which form the paper surface. When the paper backing is 
scrubbed away to leave just the toner protecting the copper surface, 
the wood fibres pull some of the toner off the copper, completely 
destroying any etch protection.

The paper which is used to produce photo quality prints on your 
inkjet printer is a very different animal to the paper normally used 
for text printing. This type of paper has very few wood fibres in it, 
and these few fibres are used to form a central supporting core. The 
surface of this paper is made from pure very finely ground white 
china clay, and when viewed with a magnifying glass, appears totally 
smooth with the appearance of fine unglazed china. When this sort of 
paper is moistened and gently rubbed, the toner is released from the 
smooth clay surface without damage.

Using the preceding criteria, I went to my local stationer and bought 
a ream of clay paper with a weight of 90 GSM which went under the 
wonderful title "Impress Matte" for around $50 (10 cents per A4 
sheet) And this is about what you should be prepared to pay for bulk 
quantities of a matte finish "economy" clay paper with a weight in 
the 90-100GSM range. 

In Australia, Celcast market such a paper with the code number IJ84. 
But such data is not helpful to someone outside Oz, and I would 
suggest that you carefully examine and test your inkjet photo 
printing paper - you might not have to spend a cent.

NOTE THAT GLOSS PHOTO PAPERS SHOULD NOT BE USED. THE GLOSS COATING 
MAY MELT AND ADHERE TO THE FUSING ROLLERS WITHIN YOUR LASER PRINTER 
OR PHOTO COPIER. IF YOU HAVE ANY DOUBTS ABOUT YOUR CHOSEN PAPER, 
FIRST TRY IRONING IT WITH A DRY CLOTHES IRON SET TO 'LINEN' AND SEE 
IF ANYTHING STICKS OR MELTS!!!!! for.



> What about Celcast IJ84 Matt photo paper?
> I regularly use Celcast IJ121 gloss paper in the colour laser printer.
> Is this any use?  You can have a few sheets of the IJ84 to try if you want.
> Richard  VK2XRC
> 
> ----- Original Message ----- 
> From: "Eddie Hanham" <eddiehan at bigpond.net.au>
> To: "Texx" <texx at delong.com>
> Cc: <members at vk2bv.org>
> Sent: Wednesday, January 30, 2008 11:44 AM
> Subject: Re: [Waverley ARS] Restorers and builders first Meeting Tuesday 5th
> 
> 
> > Hi Texx,
> >
> > Thanks for your response. we have tried this technique as well using
> > normal A4 paper but with variable results. Main problem with ordinary
> > paper is microscopic slithers of wood which leave gaps in the pcb
> > track. Better paper is clay impregnated photo paper which is reputed
> > to give reliable results down to 1/1000 inch tracks.
> >
> > Some websites recommend matte inkjet paper others glossy. Best
> > recommendation is to test stickiness with an iron before putting
> > through laser printer.
> >
> > Ben is trying magazine paper with photos already printed on them.
> >
> > I am yet to find a supplier of matte paper!!
> >
> > Some referneces are:
> >
> > http://www.fullnet.com/~tomg/gooteepc.htm
> >
> > http://www.geocities.com/jf_moreira/pcb_en.html
> >
> > http://www.fullnet.com/~tomg/gooteepc.htm
> >
> > Eddie
> > VK2BEH
> >
> >
> > >
> > > Its bizarre hearing about a bar be queue at this time of year when I can
> see
> > > snow on the hills surrounding the SF bay.  (laughter)
> > >
> > > Have you used the laserprinter method for making pc boards ?
> > >
> > > For those who havent, you print the image on special paper mirror image.
> > > Next you apply the paper to a copper clad pc board and transfer the
> image with
> > > a hot iron.
> > > (HINT ! use an iron from a swap meet, not the one you use for clothes!)
> > > Now the paper will be stuck to the board.
> > > Soak it in water untill the paper comes off leaving the iamge on the
> board.
> > > Now you are ready for a ferric chloride etch as usual.
> > >
> > > Look ! Mum ! No darkroom required !
> > >
> > > The ferric chloride is good for several etchings and when it is spent,
> > > allow it to dry up to a poweder.
> > > Go out in the garden & sprinkle it lightly in the plants.
> > > Plants love small ammounts of ferric chloride.
> > >
> > > No "haz mat" !
> > >
> > >
> > >
> >
> >
> > _______________________________________________
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> > Members at us.cactii.net
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> >
> 
>