Patent ID: 7417080

Claim:
An oil-based ink composition comprising at least a colorant, titanium oxide, a solvent comprising propylene glycol monomethyl ether and ethanol, a polyvinylbutyral resin, a ketone resin and at least one modified silicone selected from amino-modified silicone, polyether-modified silicone, alkyl-modified silicone, epoxy-modified silicone, carboxyl-modified silicone, carbinol-modified silicone, methacryl-modified silicone, mercapto-modified silicone, phenol-modified silicone, one end reactivity-modified silicone, different functional group-modified silicone, methylstyryl-modified silicone, higher fatty acid ester-modified silicone, higher alkoxy-modified silicone, modified higher fatty acid-containing silicone and fluorine-modified silicone.