ASTM D5767-18(2023)
(Test Method)Standard Test Method for Instrumental Measurement of Distinctness-of-Image (DOI) Gloss of Coated Surfaces
Standard Test Method for Instrumental Measurement of Distinctness-of-Image (DOI) Gloss of Coated Surfaces
SIGNIFICANCE AND USE
4.1 An important aspect of the appearance of glossy coating surfaces is the distinctness (clarity) of images reflected by them. The values obtained in this measuring procedure correlate well with visual ratings for DOI (image clarity).
4.2 Although Test Methods D523 and D4039 are useful in characterizing some aspects of glossy appearance, they do not provide satisfactory ratings for DOI (image clarity).
4.3 The measurement conditions given conform to the conditions specified in Test Methods E430.
4.4 The measurement conditions given in this test method conform to the conditions specified in ISO 10216.
4.5 The scale values obtained with the measuring procedures of this test method range from 0 to 100 with a value of 100 representing perfect DOI (image clarity).
4.6 The DOI (image clarity) scale value does not, of itself, indicate any specific cause for reduction in reflected image sharpness. Surface irregularities such as haze, orange peel, and wrinkle, when present, may be cited as causes for reduction of image sharpness.
SCOPE
1.1 These test methods describe the measurement of the distinctness-of-image (DOI) gloss of coating surfaces using electro-optical measuring techniques.
1.2 The coatings assessed shall be applied to planar rigid surfaces.
1.3 Test Method—The light through a small slit is projected on the specimen surface and its reflected image intensity is measured through a sliding combed shutter to provide a value of image clarity.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D5767 − 18 (Reapproved 2023)
Standard Test Method for
Instrumental Measurement of Distinctness-of-Image (DOI)
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Gloss of Coated Surfaces
This standard is issued under the fixed designation D5767; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D3964 Practice for Selection of Coating Specimens for
Appearance Measurements
1.1 These test methods describe the measurement of the
D4039 Test Method for Reflection Haze of High-Gloss
distinctness-of-image (DOI) gloss of coating surfaces using
Surfaces
electro-optical measuring techniques.
E284 Terminology of Appearance
1.2 The coatings assessed shall be applied to planar rigid
E430 Test Methods for Measurement of Gloss of High-Gloss
surfaces.
Surfaces by Abridged Goniophotometry
E691 Practice for Conducting an Interlaboratory Study to
1.3 Test Method—The light through a small slit is projected
on the specimen surface and its reflected image intensity is Determine the Precision of a Test Method
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measured through a sliding combed shutter to provide a value
2.2 ISO Standards:
of image clarity.
ISO 10216 Anodizing of Aluminum and its Alloys—
Instrumental Determination of Image Clarity of Anodic
1.4 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this Oxidation Coatings—Instrumental Method
ISO 17221 Plastics—Determination of Image Clarity (de-
standard.
gree of sharpness of reflected or transmitted image)
1.5 This standard does not purport to address all of the
ISO 11664–1 Colorimetry Part 1—CIE standard colorimet-
safety concerns, if any, associated with its use. It is the
ric observers
responsibility of the user of this standard to establish appro-
ISO 11664–2 Colorimetry Part 2—CIE standard illuminants
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
3. Terminology
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
3.1 Definitions—Terms and definitions in Terminology
ization established in the Decision on Principles for the
E284 are applicable to these methods.
Development of International Standards, Guides and Recom-
3.1.1 distinctness-of-image (DOI) gloss, n—aspect of gloss
mendations issued by the World Trade Organization Technical
characterized by the sharpness of images of objects produced
Barriers to Trade (TBT) Committee.
by reflection at a surface. E284
3.1.1.1 Discussion—This quality is sometimes called image
2. Referenced Documents
clarity.
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2.1 ASTM Standards:
3.1.2 gloss reflectance factor, R , n—ratio of the specularly
s
D523 Test Method for Specular Gloss
reflected part of the (whole) flux reflected from the specimen to
D823 Practices for Producing Films of Uniform Thickness
the flux reflected from a specified gloss standard under the
of Paint, Coatings and Related Products on Test Panels
same geometric and spectral conditions of measurements.
D2457 Test Method for Specular Gloss of Plastic Films and
E284
Solid Plastics
3.1.2.1 Discussion—The gloss standard may be a black
glass or mirror and may be assigned one of a variety of scale
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This test method is under the jurisdiction of ASTM Committee E12 on Color
values as specified.
and Appearance and is the direct responsibility of Subcommittee E12.03 on
Geometry.
3.1.3 specular angle, n—angle of reflection equal and op-
Current edition approved Nov. 1, 2023. Published November 2023. Originally
posite to the angle of incidence. E284
approved in 1995. Last previous edition approved in 2018 as D5767 – 18. DOI:
10.1520/D5767-18R23.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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Standards volume information, refer to the standard’s Document Summary page on Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036, http://www.ansi.org.
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D5767 − 18 (2023)
DIMENSIONS HA-ICM
A—Slit—0.1 mm
B—Light Angle—22°
C—Slit/Lens Dist.—50 mm
D—Lens—f 50 mm
E—Lens/Test Spec. Dist.—50 mm
F—Test Spec./Lens Dist.—50 mm
G—Lens—f 50 mm
H—Lens/Com. Shut. Dist.—50 mm
I—Light Angle—22°
J—Shut./Slit Length—10 mm
K—Shut./Slit Wi
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