A coating composition that can be cured by actinic or ionizing radiation is disclosed. The circuit has at least one sense amplifier bias reference voltage generator for generating a reference voltage at a predetermined reference point that is coupled to a start-up bias reference voltage generator. A decoding module is also provided for receiving an acquired version of a visually significant barcode that may have been degraded in a typical document handling channel and for recovering the message specified by the visually significant barcode. No phosphor layers are in the regions between adjacent pixels.