ASTM_D_2066_-_07_2012.pdf

Designation:D206607(Reapproved 2012)Standard Test Methods forRelative Tinting Strength of Paste-Type Printing InkDispersions1This standard is issued under the fixed designation D2066;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 These test methods cover procedures for determiningthe relative tinting strength of paste-type printing ink disper-sions by visual or instrumental evaluation of tints prepared bymanual or automated mixing.1.2 These test methods are applicable to paste-type printinginks,flushed pigments,and other pigment dispersions that areessentially nonvolatile under ordinary room conditions and forwhich there is a wet reference standard of the same pigmen-tation and consistency.With proper choice of tinting base,theyare applicable to dispersions of any color,including black andwhite.NOTE1The instrumental procedures for tinting strength are similar inprinciple to those described in Test Methods D387,D2745,D4838,andD6531.1.3 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D16 Terminology for Paint,Related Coatings,Materials,andApplicationsD387 Test Method for Color and Strength of ChromaticPigments with a Mechanical MullerD2244 Practice for Calculation of Color Tolerances andColor Differences from Instrumentally Measured ColorCoordinatesD2745 Test Method for Relative Tinting Strength of WhitePigments by Reflectance MeasurementsD4838 Test Method for Determining the Relative TintingStrength of Chromatic PaintsD6531 Test Method for Relative Tinting Strength of Aque-ous Ink Systems by Instrumental MeasurementE284 Terminology of AppearanceE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE1331 Test Method for Reflectance Factor and Color bySpectrophotometry Using Hemispherical GeometryE1347 Test Method for Color and Color-Difference Mea-surement by Tristimulus ColorimetryE1349 Test Method for Reflectance Factor and Color bySpectrophotometry Using Bidirectional(45:0 or 0:45)Geometry2.2 ANSI Standards:3PH 2.17 Geometric Conditions for Reflection DensityPH 2.18 Spectral Conditions for the Measurement of OpticalDensityPH 2.30 Viewing Conditions for Graphic Arts andPhotographyColor Prints,Transparencies and Photome-chanical Reproductions3.Terminology3.1 Definitions relating to color attributes and color differ-ences are covered in Terminology D16 and E284.3.2 Definitions of Terms Specific to This Standard:3.2.1 masstone(or masscolor),nthe color of a materialthat is thick enough to mask any background.3.2.2 tinting strength,nthe ability of a material to impartits color to a standard base;the reciprocal of the relativeconcentration required to match the reference material in astandard base.3.2.3 undertone(or undercolor),nthe color of a thin filmof a material.1These test methods are under the jurisdiction of ASTM Committee D01 onPaint and Related Coatings,Materials,and Applications and are the directresponsibility of Subcommittee D01.56 on Printing Inks.Current edition approved June 1,2012.Published August 2012.Originallyapproved in 1991.Last previous edition approved in 2007 as D2066 07.DOI:10.1520/D2066-07R12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.Summary of Test Methods4.1 Thin and thick films of the standard and unknowndispersions are drawn down in juxtaposition on bond and oncoated paper.Visual evaluation of the relative undertone andmasstone provides a check on color equivalency.4.2 The standard and unknown dispersions are each reducedto the same concentration in a suitable tinting base.Thick wetdrawdowns of the two tints are evaluated for tinting strength byTest Methods A or B.4.2.1 Test Method AVisual Evaluation:If the strength ofthe tints is judged unequal,aliquots of the stronger tint arefurther reduced until equivalence is obtained.The tintingstrength of the unknown dispersion is calculated from theweight of extra tinting base ad