The Following Patent might be helpful
US5,270,368
Piezo inkjet inks and methods for making and using same
3M Innovative Properties Company
An organic solvent-based piezo ink is disclosed having (a) a
particulate material; (b) a binder; (c) a plasticizer; (d) an organic
solvent; (e) a fluorochemical surfactant; and (f) an antifoaming
agent including an oil. Preferably, the particulate material is
provided by an antifoaming silicone oil. Optionally, light and heat
stabilizers are also included. Methods of making and using this
ink are also disclosed.
http://164.195.100.11/netacgi/nph-Parser?sect1=PTO2&Sect2=HITOFF&p=1&u=/netahtml/search-adv.
htm&r=9&f=G&l=50&d=CR93&S1=5,270,368.UREF.
&OS=ref/5,270,368&RS=REF/5,270,368
Regards
James