Digital BW, The Print

I, like many others, have had all sorts of difficulties spraying RC paper prints. (I have tried 
Lyson Print Guard which people tend to believe is the same thing as Print Shield.)  I really 
don't think it works very well and is horrible on images with great expanses of deep black 
- read mottled blacks and trapped dust.  But the recent glop dicussion begs the following:

Could someone like MIS develop a Print Shield like coating and instead of putting it in an 
aerosol can put it in a refillable ink cartridge?  Our printers are already capable of precise 
spraying of ink, how about a protective coating?  Any RIP/driver could be used to "spray" 
an already printed image.

Thoughts?