--- In
Homebrew_PCBs@yahoogroups.com, "Brian Chapman"
<cornbeltroute@a...> wrote:
> Hello,
>
> I purchased an Epson Stylus C84 some months ago (this unit is
> amazingly quiet!). I'm using Newscraft LGN Imaging Paper (System
> Facilities Inc., Syracuse, NY) to create artwork for double-sided
> ferric chloride etching. (The package states this translucent laser
> printer paper is for positive or negative images to use in exposing
> screens or printing plates directly without film. Also, it
> is "specially coated to improve toner adhesion," and
> is "dimensionally stable under heat and pressure -- holds
> registration in color separations.")
Very interesting that Epson Durabrite inks stick to a laser
transparency. I'd have not thought it was possible! Perhaps it's
because of improvements that allow the Durabrite in the C84 to print
onto some glossy inkjet papers.
FYI, the Durabrite inks from one model to the next are not the same.
The C82 and C80 only print on matte paper.
> Additionally, I have a portable UV vacuum unit for processing the
> photo resist-covered brass sheets I use. Then, it's on to a heated
> power spray etching tank that I built (from Randy Gordon-Gilmore's
> online plans).
Do you have a link? If so, it'd be great if you could put it in the
Links section.
> I do not use this setup for PCBs; rather, we own a small startup fine
> scale model production company. I'd like to ask a couple or three
> questions, if I may:
>
> 1) The discussion here about "direct to plate" resist imaging, using
> modified printers, applies only to single-sided plate preparation,
> correct? I am having a devil of a time applying the photo resist
> sheeting (from Think and Tinker) to the brass without bubbling (the
> brass is cleaned meticulously according to instructions).
How are you applying the photoresist sheeting?
> I'd sure love to discover an alternative to the photo resist method
> I'm now using.
>
> 2) Might someone here be familiar with the C84 and its printing
> resolution? I do not clearly understand printing resolution
> interpolation. . . .
This is timely. I just got this link from another list, it discusses
printer resolution and why 288 lpi is the right raster image
resolution to send to a printer with a stated resolution of 720dpi or
a multiple of that.
http://www.rags-int-inc.com/PhotoTechStuff/Epson2200/Steve