2009-04-14 by Roland F. Harriston
The need to "scrub" is a function of the fusing process of laser
printing where the toner,
tiny polymer pellets, are fused to the paper base by way of heating.
This adhesion
is usually pretty firm, and in order to separate the toner (polymer)
from the paper, some
abrasion is required, although I have used some papers where the paper
base separates
from the toner quite easily with little or no scrubbing.
There are probably some papers used in ink jet printing that are as you
describe, but I think
that they would be the premium grade "professional" types that might not
be suitable for
laser transfer PCB fabrication.
I have seen some papers of this type that are sold in large, long rolls.
Roland F. Harriston, PD
******************
On 4/13/2009 3:51 PM, Piers Goodhew wrote:
>
>
> Hey, I was going to call you that ;-)
>
> I haven't got the electron microscope out, but I believe the layer of
> plastic is topped with some sizing. It's certainly sticky on top, and
> certainly not water soluble which is why you have to reasonably
> vigourously toothbrush the whole affair once you've soaked the paper
> off (it's pretty brittle once you've got the paper away).
>
> It could be molybdenum, it cold be ectoplasm, but there's *something*
> coating the best paper I've used, and it's insoluble, thin, and toner
> cannot pass through it onto the wood fibres.
>
> PG
>
> On 14/04/2009, at 1:25 AM, Roland F. Harriston wrote:
>
> > All of the inkjet "gloss" papers that I have seen were coated with a
> > polished clay layer.
> > A "plastic" layer would not absorb the wetness of inkjet ink, clay
> > does
> > an still renders
> > a "glossy" appearance. "Plastic" (nearly all polymers) would melt and
> > distort under the
> > heat of an iron or a laminator. And, I don't think that any sensible
> > photocopy operator
> > would want to run an unknown "plastic" material through a copy
> > machine.
> > There is
> > heat required to "fuse" the toner material.
> >
> > Additionally, "plastic" (polymers)" are difficult to dissolve in
> > water.
> >
> > Roland F. Harriston, PD
> > (Pedantic Douche)
> > *********************
> >
>
>
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