Abstract
Advantages of the photo-magnetic polymers are industrial applications to high speed printing and coating of magnetic images on variety of base plates. Photo-magnetic polymers were obtained by dispersingferrites in photo-hardening polymers, and their chemical and physical characteristics were evaluated. In order to achieve photo-magnetic polymers with interesting properties, it is important to improve dispersivility of magnetic materials in photopolymer binders. Ferrites were treated by silane coupling reagents for dispersing in photopolymers. The dispersivility of sample was evaluated by measurment of gloss-values which is related to surface characteristics. The experimental results suppor that vinyl silane couplers are effective to improve dispersivility of ferrites in the polymer binders. Methyl methacrylate (MMA), styren (St) and also comercially available polymer (PP), were tested for trial binders. Their sensitivity characteristics were examined. Electric test signals were able to be recorded and detected for coated samples of the photo-magnetic polymers on PET films. Magnetic hysteresis curves of the samples were measured and fairly good magnetic property was observed.
