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US 7,842,347 B2Granted
Inkjet printing of layers
AssigneeLexmark International, Inc.
InventorsFrank Edward Anderson, Jing X. Sun
Life of this patent
Estimating the term…
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AssigneeLexmark International, Inc.
InventorsFrank Edward Anderson, Jing X. Sun
Estimating the term…
A layer of material that binds to the next material to be printed is applied. In an embodiment this material is a resin containing a porous silica. The number of printing passes and amount of liquid accumulation is reduced by selecting ingredients of the ink to act both as a humectant and as a layer former, which permits the ink to have high amounts of active ingredient. In an implementation, two materials, the first an ink depositing amine and the second an ink depositing epoxy, are printed separately. They react in situ to form a single, dielectric layer. When the lower layer is a conductive metal trace or a wiring crossover on, for example, a paper substrate, a second metal trace perpendicular to the lower trace may be formed on the dielectric layer to form a capacitive circuit configuration.
A method of printing laminations on a substrate by inkjet printing comprising applying a second layer over a first layer on said substrate, subsequently applying by inkjet a first ink layer having an active material to form a film over said second layer, said second layer having a binding characteristic with respect to said active material to hold said active material over said first layer, wherein said first layer is a conductive metal trace and said second layer is a film forming resin containing an acrylic latex binder and porous silica.
Dependencies are inferred from the claim text.