System and method for precision inking of micro-optic recesses

An apparatus, comprising:

• a jet dispenser;
• and
• a controller communicatively connected to the jet dispenser, wherein the controller is configured to:
• control the jet dispenser to dispense a first volume of a first radiation-curable ink having a first pigment concentration to a first portion of a three-dimensional icon layer, wherein the first portion of the three-dimensional icon layer has a first volumetric fill requirement, and
• control the jet dispenser to dispense a second volume of the first radiation-curable ink to a second portion of the three-dimensional icon layer, wherein the second portion of the three-dimensional icon layer has a second volumetric fill requirement.

A micro-optic security device comprising:

• a substrate;
• and
• a three-dimensional icon layer formed on the substrate, the three-dimensional icon layer comprising a first plurality of recesses in a first portion, and a second plurality of recesses in a second portion,
• wherein recesses of the first plurality of recesses are filled with a first radiation-curable ink having a first pigment concentration to a first volumetric fill requirement, and
• wherein recesses of the second plurality of recesses are filled with the first radiation-curable ink to a second volumetric fill requirement.