To Volkan and others printing with the Yellow MISPRo ink If you get the opportunity, perhaps you could try viewing your ink mix under "Black light". If it Fluoresces then this may be the way to verify the coverage and yet still use only the most etch resistant ink. You can only use yellow for each cartridge which results most etch resistant ink on your PCB but yellow is transparent and difficult to do visual inspection because of that I mixed the inks and used as a cyan cartridge.
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Re: Direct inkjet resist on 1.6mm FR4 results
2006-05-02 by warrenbrayshaw