Russell Shaw
> Is this the non-waterproof film?
The seller has a waterproof film that is a little more $$.
The link is for the NON waterproof variety that I have
been using.
>The gelatin coated stuff is what the genuine Epson inkjet film was
anyway.
>The HP, canon, and others all used that cruddy sand-paper film.
If memory serves the 3M is the "sand-paper" film also, that's what
I was referring to about a tooth for the ink to bind to AFTER the ink
dried but in my experience there were ink "pooling" problems.
Same story with "AVERY" (the label people) and "COPY FX"
film from "Letraset". The only other RETAIL transparency film
that I ever had any decent luck with was "BURLINGTON" from
Paris Business Products, but I've been told it is out of production.
>Been doing this easy stuff for 5+ years.
So have I, it's nothing new to me, my (fragmented) graphic arts
experience goes back to the late `70s. Just posting for some who
may not have had similar experiences.
Bora Dikmen
>As I understood, you print on this film with black ink
>and then pose with UV. So there is no need to buy
>waterproof version?
As I understand this question, you are correct, Print, lay film and
board in contact with one another, expose.
The (dry) INK should be in direct contact with the photosensitive
board surface. For solder side a regular print works, If you are
printing a (top) component side your image needs to be MIRRORED
before you print it. If you sandwich things in such a way that the
thickness of the film is between the pattern image (ink) and the
photosensitive (board) surface then you will end up getting some
light leakage around the pattern edges.
I have not used the waterproof film, I personally see no need for
the added expense, except for the possible archival transparency
if I planed on producing large numbers of the same board over an
extended period of time. At that point I would seriously consider
REAL Litho films from Gerbers or send the files to a board house.
>Did you use dry film, and laminate the PCB?
At this point, I'm using the more expensive pre coated board material,
the main reason being ease of access, (3 retail suppliers in my area).