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This standard describes procedures for the determination of the relative lightfastness and weatherability of printed matter under the following conditions, which involve exposure to natural daylight or accelerated procedures in the laboratory.
Formerly under the jurisdiction of Committee D01 on Paint and Related Coatings, Materials, and Applications, this practice was withdrawn in January 2020 in accordance with section 10.6.3 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.
1.1 This standard describes procedures for the determination of the relative lightfastness and weatherability of printed matter under the following conditions, which involve exposure to natural daylight or accelerated procedures in the laboratory:
1.1.1 Method 1—Daylight behind window glass,
1.1.2 Method 2—Outdoor weathering,
1.1.3 Method 3—Xenon-arc apparatus with window glass filters to simulate daylight behind window glass,
1.1.4 Method 4—Xenon-arc apparatus with water spray and daylight filters to simulate outdoor weathering,
1.1.5 Method 7—Fluorescent lamp apparatus to simulate indoor fluorescent lighting in combination with window-filtered daylight.
1.1.6 Method 8—Fluorescent lamp apparatus operating with fluorescent cool white lamps to simulate indoor fluorescent lighting.
Note 1—Previous versions of this standard included Methods 5 and 6 that are based on enclosed carbon-arc exposures. These methods are described in Appendix X1. The spectral irradiance of the enclosed carbon-arc is a very poor simulation of solar radiation, window glass filtered solar radiation, or the emission of lamps used for interior lighting. In addition, enclosed carbon-arc devices are no longer readily available or commonly used.
1.2 These methods require that a suitable print or other control (reference standard) be run along with the test sample. Color changes due to conditions of exposure may be evaluated by visual examination or instrumental measurement.
1.3 These methods are applicable to prints on any flat substrate including paper, paperboard, metallic foil, metal plate, and plastic film, and are produced by any printing process including letterpress, offset lithography, flexography, gravure, and silk screen.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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. For specific hazard statements, see Section 8.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D1729 Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials
D2244 Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
D2616 Test Method for Evaluation of Visual Color Difference With a Gray Scale
D4302 Specification for Artists Oil, Resin-Oil, and Alkyd Paints
D4674 Practice for Accelerated Testing for Color Stability of Plastics Exposed to Indoor Office Environments
D5067 Specification for Artists Watercolor Paints
D5098 Specification for Artists Acrylic Dispersion Paints
E284 Terminology of Appearance
E991 Practice for Color Measurement of Fluorescent Specimens Using the One-Monochromator Method
E1331 Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
E1347 Test Method for Color and Color-Difference Measurement by Tristimulus Colorimetry
E1349 Test Method for Reflectance Factor and Color by Spectrophotometry Using Bidirectional (45:0 or 0:45) Geometry
G7 Practice for Atmospheric Environmental Exposure Testing of Nonmetallic Materials
G24 Practice for Conducting Exposures to Daylight Filtered Through Glass
G113 Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
G151 Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources
G153 Practice for Operating Enclosed Carbon Arc Light Apparatus for Exposure of Nonmetallic Materials
G154 Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic Materials
G155 Practice for Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials
ANSI StandardPH 2.30 for Graphic Arts and PhotographyColor Prints, Transparencies and Photomechanical Reproductions, Viewing Conditions Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
ISO StandardISO 9370 Plastics Instrumental determination of radiant exposure in weathering testsGeneral guidance and basic test method
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ASTM D3424-11, Standard Practice for Evaluating the Relative Lightfastness and Weatherability of Printed Matter (Withdrawn 2020), ASTM International, West Conshohocken, PA, 2011, www.astm.orgBack to Top