spot, out!

White spots on negatives that won’t come off = dust during drying
White spots on negatives that come off = dust after drying
Clear spots on negatives = dust on film during exposure
Black spot on negative = stain from chemistry.
Just the most common forms. Solve these problems before looking for other reasons.

HP Supports Platinum Printing and Other Alternative Processes « Digital ImageMaker

HP Supports Platinum Printing and Other Alternative Processes « Digital ImageMaker.

a posting about the new HP option on their 3200 for making diginegs. The hp supplied PDF expands on the process which is based upon using the green to lay down a varying density ink to block UV .