Photocurable clear ink composition for inkjet printing
AssigneeSakata Inx Corporation
InventorsOkinori Nakashima, Takuya Myose, Takuya Okamoto, Kazuhiro Fuke, Ryoichi Nitta
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Abstract
Clear inks are prone to heat-induced micro-gelling that can cause their storage stability to drop, and micro-gelling may also occur in clear inks with the passage of time, in which case their inkjet discharge property may drop. As a solution, a photocurable clear ink composition for inkjet printing is provided, which contains a photopolymerizable compound, a photopolymerization initiator, and an inorganic filler of 1 to 200 nm in average grain size accounting for 0.05 to 5.0 percent by mass in the composition, and whose visible light transmission factor is 30% or higher.
Claims12
A photocurable clear ink composition for inkjet printing which contains a photopolymerizable compound, a photopolymerization initiator, an amino and/or acid group-containing pigment dispersant, an inorganic filler of 1 to 200 nm in average grain size accounting for 0.05 to 3.0 percent by mass in the composition, and a ketone resin, and whose visible light transmission factor as measured at 680 nm is 30% or higher.
Dependencies are inferred from the claim text.