PlexDisc white thermal printable surface supports full-surface edge-to-edge thermal printing. PlexDisc white thermal CD media are fully compatible with thermal disc printers including Prism and Everest model. These discs do not have a stack ring", enabling print coverage of the entire disc surface. White Thermal Hub Printable CD-R discs are based on an advanced recording dye, which provides the highest level of performance, reliability, and archival life.