INKJET PRINTED ELECTRONIC DEVICE
A printed electronic device and a coating composition for forming a printed electronic device comprising an ink jet-receptive coating on a paper substrate.
1 . A printed electronic device comprising:
a paper substrate; and
an ink jet-receptive coating including a primary pigment;
a member selected from the group consisting of a secondary pigment, a polyvalent metal salt, a cationic polymer, or mixtures thereof; and
a binder wherein said binder is present in an amount from about 2 to 15 parts by weight per 100 parts total pigments; and
an electronically conductive ink printed on the ink jet-receptive coating in the form of an electronic circuit.
2 . The printed electronic device of claim 1 wherein the binder comprises a synthetic latex or water soluble polymer.
3 . The printed electronic device of claim 2 wherein the binder is styrene-butadiene latex.
4 . The printed electronic device of claim 3 wherein the coating contains a multivalent salt and a calcium stable styrene butadiene latex.
5 . The printed electronic device of claim 2 wherein said binder further comprises starch nanoparticles.
6 . The printed electronic device of claim 5 wherein said binder comprises a biopolymer latex conjugate comprising a biopolymer-additive complex reacted with a crosslinking agent.
7 . The printed electronic device of claim 1 wherein said primary pigment comprises calcium carbonate.
8 . The printed electronic device of claim 7 wherein the primary pigment comprises aragonite or fine ground calcium carbonate.
9 . The printed electronic device of claim 1 further comprising at least one secondary pigment selected from the group consisting of cationic calcium carbonate.
10 . The printed electronic device of claim 1 wherein said coating further comprises a co-binder selected from the group consisting of protein binders, polyvinyl alcohol, starch and mixtures thereof.
11 . The printed electronic device of claim 1 wherein said primary pigment is present in an amount of about 35 to 100 parts based on 100 parts total pigments.
12 . The printed electronic device of claim 13 wherein said coating further comprises a plastic pigment present in an amount of about 2 to 15 parts per 100 parts total pigments.
13 . The printed electronic device of claim 1 wherein said coating is present at a coat weight of about 2 to 8 lbs./ream (3,300 ft. 2 ).
14 . The printed electronic device of claim 1 wherein the ink-receptive coating does not include a polyvalent salt.
15 . The printed electronic device of claim 1 wherein said binder comprises starch.
16 . The printed electronic device of claim 1 wherein the electrically conductive ink comprises a copper, aluminum, or silver pigment.
17 . The printed electronic device of claim 1 comprising a primary pigment having an average particle size of less than 1 micron; a secondary pigment having an average particle size of about 3 to 5 microns; and a binder wherein said binder is present in an amount from about 2 to 15 parts by weight per 100 parts total pigments.
18 . The printed electronic device of claim 1 wherein the ink jet receptive coating contains a cationic polymer
19 . The printed electronic device of claim 18 wherein the cationic polymer includes poly(diallyl dimethyl ammonium chloride).
20 . A method for forming an electronic device which comprises applying a pattern of a conductive ink to the surface of an ink-receptive coating which comprises a primary pigment; a secondary pigment; and a binder wherein said binder is present in an amount from about 2 to 15 parts by weight per 100 parts total pigments.