| 摘要 |
PURPOSE:To allow formation of a stable image by dispersing a coloring agent into an electrical insulating org. compd. which is solid at ordinary temp. and has <=2,000 average mol. wt. CONSTITUTION:This developer is formed by dispersing the coloring agent 6 into the electrical insulating org. compd. 5 which is solid at ordinary temp. and has <=2,000 average mol. wt. The m. p. of this electrical insulating org. compd. 5 is >=30 deg.C, more preferably >=40 deg.C and <=80 deg.C by taking ordinary use environment and ease of handling into consideration. The materials which meet such requirements are exemplified by paraffins, waxes and the mixtures composed thereof which are the dielectrics having about 1.9-2.3 dielectric constant epsilon. The ratio of the coloring agent 6 is usually 0.01-100g, more preferably 0.1-10g per 1l molten state of the electrical insulating org. compd. The stable image is formed in this way. |
