In SX Microcontrollers, SX/B Compiler and SX-Key Tool, George Herzog wrote:

Printing directly to copper without the photoresist emulsion may be a useful solution.  Many thin films will provide a resistance to etching.  My own experience was in an upper level etching class at the University of Oregon's Art department.

In regards to using an ink jet, I have printed transparencies for photosensitive exposure with mixed result.

While my old H/P Inkjet did perfect transparencies, my Cannon iP1000 doesn't stick to the material - just beads.

When I try to make a copy in the local copy shop, the transparency's black is not dense enough for photo sensitive exposure.  

So, if you use transparencies, the trick is really to get the density of black that will block out all light.

If you want to do an on copper resist, many markers and inks will do the job - but they have to be water resistant when finally dried as the etchant is always a water-based solution.

---------- End of Message ----------


You can view the post on-line at:
http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=140357#m143850

Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com

The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2006 (http://www.dotNetBB.com)