PROCESS FOR THE PREPARATION OF PIGMENT ATTACHED TO CHEMILUMININESCENCE

摘要

The pigment-attached red light emitting fluorescent material is produced by (a) stirring a red light emitting fluorescent material in the pure water, and extracting a supernatant and drying it to make a fluorescent material particle for a pigment, (b) mixing the particle with an indium oxide, and calcining the mixture in the refractory container in the atmosphere of H2S gas at 700˜950 deg.C for 2-8 hr to make a mixed pigment, and (c) bonding the mixed pigment to the red light emitting core fluorescent material with a binder i.e. gelatin or arabia rubber. The core fluorescent material is pref. Y2O2S:Eu, Y2O3:Eu or YVO4:Eu. The produced fluorescent material improves a luminance and a contrast.