Patent ID: 8697334
Filing Date: 2014-04-15
Classification: B82Y,G01N,G09F,G11B,H01F

Abstract:
1. A method of forming a plurality of encoded microparticles comprising the steps of: (a) providing a planar substrate on which the encoded microparticles are to be formed; (b) providing a reticle having a reticle pattern; (c) exposing the substrate to light transmitted through the reticle, thereby printing a first portion of an encoding pattern onto the substrate; (d) moving the substrate in a lateral direction; (e) exposing the substrate to light transmitted through the reticle, thereby printing the reticle pattern onto the substrate; (f) optionally repeating steps (d) and (e) to create the encoding pattern; and (g) removing a portion of the remaining substrate to form the encoded microparticles.