Patent ID: 9242270
Filing Date: 2016-01-26
CPC Classification: B05D,B41M,G02B

Claim Text:
1. A method for printing embossed convex lens structures on a printing medium, comprising: depositing, on a surface of said printing medium, a subassembly comprising a first layer of a liquid or powdery first material, said first layer additionally comprising a component having the property of lowering the surface tension of said first material during hardening thereof, wherein said subassembly covers said surface of said printing medium except in those areas where a second layer finally is deposited; hardening said first material; depositing, at least on those parts of said surface of said printing medium not covered by said subassembly, said second layer of a liquid second material which, in the liquid state, has a surface tension greater than that of said subassembly made of the hardened first material; and hardening said second material, thereby forming said embossed convex lens structures, wherein said component lowers the surface tension of said first material between the deposition of said first and second layers of said first and second materials, so that said first material has, before hardening, a greater surface tension than that of the printing medium, after hardening, a lower surface tension than that of the printing medium, wherein said hardening of said liquid material is defined as its passing from the liquid state to the solid state, and wherein said hardening of said powdery material is defined as its passing from the powdery state to that of a block of material.