TAPPI T 578 sp-16描述了印刷和书写曝光的实验室程序 在光通量水平较高的情况下使用纸对氙弧光，以加速该类型纸张的老化。本标准实施规程规定了所需的样品制备和暴露条件 获取有关纸张相对稳定性的信息，这些信息是由 把这种纸暴露在光下。本标准实践提供了有关纸张稳定性的定性指南。它没有定义 给定纸张达到特定光学性能的预期寿命。本标准实施规程使用的高强度宽带光源可能不适用于 评估含有过氧化氢漂白机械浆的纸张的光稳定性（1）。

TAPPI T 578 sp-16 describes a laboratory procedure for the exposure of printing and writing paper to xenon-arc light at elevated levels of light flux to permit accelerated aging of that type of paper.This standard practice specifies the sample preparation and conditions of exposure required to obtain information on the relative stability of paper with regard to change in optical properties brought about by exposure of such paper to light.This standard practice provides qualitative guidelines regarding paper stability. It does not define the life expectancy for a given paper to reach a specified set of optical properties.This standard practice uses high-intensity broadband light sources that may not be suitable for the evaluation of light stability of papers that contain peroxide bleached mechanical pulp (1).