Patent ID: 8684511

Claim:
A printing system comprising: a print head array comprising a plurality of ink jet print heads for depositing a printing fluid onto a substrate to form images on the substrate; and a first source which emits UV radiation to polymerize the printing fluid deposited onto the substrate by the plurality of ink jet print heads sufficiently to immobilize, but not cure, said printing fluid; a mechanism for adjusting an energy level of the radiation emitted by said first source, wherein the fluid is selectively immobilized by said first source to exhibit a desired degree, or lack, of gloss; wherein the energy level shown in the â€œPin Energyâ€ column of the following table results in the corresponding exhibited gloss levels in the â€œGloss at 85 degreesâ€ column of the table: Gloss at 85 degrees Pin Energy mW/cm2 LED pin Hg arc pin 5.8 76.2 14 67.3 24 48.3 36 30.7 27 73.8 50 17.2 65 8.9 250 5.5.