| 摘要 |
PURPOSE:To improve the printing characteristics, shelf stability and the like of a discharge recording material formed by providing a coloring layer and a metal evaporation layer on a carrier, by a mthod wherein the coloring layer is allowed to contain the aggregate of carbon black dispersed by means of a plasticizer. CONSTITUTION:To 100 parts by weight of carbon black of low oil absorption and having a particle diameter of the order of 10-100 mmu, more than approximately 10pts.wt. of a plasticizer (e.g., a phthalate plasticizer, preferably one having a molecular weight of more than 1,000) is added and dispersed. Then, a solution of a resin for a binding agent (e.g., a cellulose resin) is mixed thereto to form a coating composition for forming a coloring layer (in this mixing stage, the carbon black becomes aggregate particles of average particle size approximately 0.5-3mu). Then, the coating composition is applied to a carrier to form a coloring layer, and a metal such as Al, Zn, Mg or the like is deposited thereon by evaporation to form a metal layer having thickness of the order of 50-2,000Angstrom , thereby to obtain a discharge recording material. |
