| 摘要 |
PURPOSE:To provide a cover film for sublimation transfer type hard copying capable of clearly copying an image, particularly a color image and preventing discoloration of a dye, comprising a layer consisting mainly of a fluorescent whitening agent and a resin. CONSTITUTION:A cover film layer comprising a fluorescent whitening agent [for example, alpha,beta-bis(benzoxazolyl)ethylene compound] in a resin (e.g., a linear polyester resin) in an amount of 0.01-5 PHR to the resin and comprising, if required, an ultraviolet ray absorbing agent (e.g., hydroxybenzophenone) is provided on a base consisting of a polyester film or the like to obtain the objective cover film for sublimation transfer type hard copying. |
