ISO 18903:2002 成像材料-胶片和纸-尺寸变化测定

标准编号：ISO 18903:2002

中文名称：成像材料-胶片和纸-尺寸变化测定

英文名称：Imaging materials — Films and paper — Determination of dimensional change

发布日期：2002-07

标准范围

ISO 18903:2002规定了一种确定由以下原因引起的照相胶片和纸张尺寸变化的方法:由于大气相对湿度（RH）（湿度膨胀系数）的变化而导致的平衡水分含量的变化；温度变化（热膨胀系数）；加工；老化。ISO 18903:2002涉及测量前样品的水分含量和热历史、测量期间的大气条件以及数据处理。它没有描述用于进行测量的各种实验技术。本国际标准不适用于测定即时照相胶片的尺寸变化。

ISO 18903:2002 specifies a method for determining the dimensional change of photographic films and papers caused by:

• variations in equilibrium moisture content due to change in the relative humidity (RH) of the atmosphere (humidity coefficient of expansion);
• change in temperature (thermal coefficient of expansion);
• processing;
• ageing.

ISO 18903:2002 deals with the moisture content and thermal history of the specimens before measurement, the atmospheric conditions during measurement, and the treatment of the data. It does not describe the various experimental techniques used to make the measurements.This International Standard is not suitable for determining the dimensional change of instant photographic film.

标准预览图