BS ISO 18903-2003 成像材料.摄影胶片和相纸.尺寸变化测定

标准号：BS ISO 18903-2003
中文标准名称：成像材料.摄影胶片和相纸.尺寸变化测定
英文标准名称：Imaging materials - Films and paper - Determination of dimensional change
标准类型：G81
发布日期：2003/1/31 12:00:00
实施日期：2003/1/31 12:00:00
中国标准分类号：G81
国际标准分类号：37.040.20
适用范围：This International Standard 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. This International Standard 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.