| 摘要 |
<p>PURPOSE:To obtain a dielectric substance which is less changed in volume resistivity in spite of a change in humidity and temp. and has a high dielectric constant by forming this dielectric substance of a compsn. consisting of specific weight % of a vinylidene fluoride resin and a methyl methacrylate resin. CONSTITUTION:This dielectric substance is formed of the compsn. consisting of 80 to 96mass%, more preferably 85 to 95mass% vinylidene fluoride resin and 4 to 2Omass%, more preferably 5 to 15mass% methyl methacrylate resin. The degradation in the dielectric constant is significant if the content of the vinylidene fluoride resin falls under 80mass%. The dependency of the volume resistivity on humidity and temp. increases when the content thereof exceeds 96mass%. The specific dielectric constant of the dielectric constant lowers and, therefore, the carrying power of the carrying member weakens and there is a possibility that the transfer material causes mispositioning if the content of the methyl methacrylate resin exceeds 20mass%. On the other hand, the dependency of the volume resistivity increases when the content thereof falls under 4mass%.</p> |
