| 摘要 |
PURPOSE:To provide a base of small optical anisotropy, of high thermal transformation, and of high stability in warm humidity by injecting specific photo-setting resin composition into the space between the plain plate with information pattern and the parting transparent plate and hardening it. CONSTITUTION:Photo-setting resin mainly consisting of a compound, whose viscosity under 3,000 CP at 25 deg.C, having more than four numbers of acrylic radical or methacrylic radical per one molecule and more than four kinds of some other specific compounds, is injected into the space between the plain plates with information pattern and the parting transparent plates to be provided at the interval of 0.8-2.0mm disposed facing each other. Then, it is irradiated with energy rays from the side of the plain plate with information pattern or the parting transparent plate. Next, after the photo-setting resin is hardened, the information pattern printing plate formed of cured photo-setting resin is taken out of the plain plate with information pattern and the parting transparent plate. |
