Primer coatings for inkjet and liquid electrophotographic printing

A coated substrate comprising:

• a base substrate;
• and
• a primer coating disposed upon a surface of the base substrate;
• wherein the primer coating comprises a polyvalent metal salt and an amine-functionalized copolymer having an amine number of about 10 to about 180 mg KOH/g copolymer and a glass transition temperature of about 0° C. to about 50° C.;
• wherein the amine-functionalized copolymer comprises a polymerized reaction product of:
• one or more first ethylenically unsaturated monomers lacking an amine group;
• and
• one or more second ethylenically unsaturated monomers bearing at least one amine group, the at least one amine group comprising a side chain of the amine-functionalized copolymer.

A coating process comprising:

• depositing a coating composition upon a base substrate, the coating composition comprising a polyvalent metal salt dispersed in an aqueous fluid and an amine-functionalized copolymer dispersed as an emulsion in the aqueous fluid, the amine-functionalized copolymer having an amine number of about 10 to about 180 mg KOH/g copolymer and a glass transition temperature of about 0° C. to about 50° C.;
• wherein the amine-functionalized copolymer comprises a polymerized reaction product of:
• one or more first ethylenically unsaturated monomers lacking an amine group;
• and
• one or more second ethylenically unsaturated monomers bearing at least one amine group, the at least one amine group comprising a side chain of the amine-functionalized copolymer;
• and
• evaporating the aqueous fluid to leave the primer coating disposed upon the base substrate.