ASTM F1945-05 - 1.1.2005
 
1. Scope

1.1 This practice covers an accelerated procedure intended to determine the lightfastness of ink jet prints in office environments where overhead fluorescent light is used for illumination.

1.2 This practice describes two methods based on Method II and Method III from D 4674, in which specimens are exposed to cool white VHO fluorescent lamps (Method II) and cool white fluorescent lamps (Method III) under controlled environmental conditions.

1.3 Two criteria are used to determine relative lightfastness: color change and optical density.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section .

1.4 There is no known ISO equivalent standard.

 
2. Referenced Documents

D3424-11

Standard Practice for Evaluating the Relative Lightfastness and Weatherability of Printed Matter (Withdrawn 2020)

D4674-19

Standard Practice for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Office Environments

G113-22

Standard Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials

G141-09(2021)

Standard Guide for Addressing Variability in Exposure Testing of Nonmetallic Materials

G151-19

Standard Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources

G154-23

Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Materials

D1729-22

Standard Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials

D2244-23

Standard Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates