Development of Rewritable Laser System

Various systems for rewritable recording technology have been proposed from the viewpoint of convenience and reducing environmental impact. However, such systems have limitations. A thermal rewritable recording medium that uses high-contrast leuco dye is not suitable for outdoor use because of rapid photofading. In vector scanning, which is an efficient method for drawing characters with a high power laser, repetition durability tends to be degraded by overheating at the crossing and turning points of character strokes. We solved these two problems to permit outdoor application under severe conditions by using novel technologies. The system is a rewritable recording technology suitable for use in physical distribution systems.