Homebrew PCBs

At 11:41 pm ((PDT)) Sat Sep 1, 2007, in Digest 2273 Mr Crazy wrote:
>Does any one know if OHP film, Transperancy

'transperancy' is presumably a mis-spelling of 'transparency'

'OHP Film' and 'transparency film' are probably synonymous
in this context, though 'transparency film' has a quite different
meaning in the context of silver-emulsion photography.

>and Acetate Films are the same or all are different?

'acetate film' is a subset of OHP film and is likely to be
unsuitable for toner transfer (TT) because it is likely to melt
in the laser printer fuser and occasion an expensive repair.

>Which is the best for Toner Transfer?

None of these terms is an adequate specification for TT.

You need a film which is safe against laser fuser temperature,
so you need either a laser transparency film or a laser-safe
inkjet transparency film.

If, indeed, you need a _transparency_ film for TT at all,
since the purpose is not projection of the image but
mechanical transfer of the toner medium.

Note that many people are using inkjet printer _paper_.

The reason for this is that the structure of some papers includes
a layer which separates in water, allowing the paper to be peeled
from the toner image. In others, the backing paper disintegrates
on soaking and can be removed with mechanical encouragement.

Some magazine and catalogue paper is coated and separates
in water so this provides a very cheap source which for many
people gives satisfactory results, though you will have to
experiment until you find ones which work for you.

If you look in the group archives you will find plenty of discussion
on these topics.


Regards, LenW