Homebrew PCBs

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.")

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).

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).

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. . . .

Thank you much,

-Brian

Brian Chapman
Cedar Rapids, Iowa


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