1、Designation:F144393(Reapproved 2009)Standard Practice forUsing 0.008-in.(0.203-mm)Aperture Reflectometers as TestInstruments for Measuring Visual Image Quality of BusinessCopy Images1This standard is issued under the fixed designation F1443;the number immediately following the designation indicates
2、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.Scope1.1 This practice covers the use of the reflectance-typeopt
3、ical character testers with a 0.008-in.(0.203-mm)apertureas test instruments for measuring image quality.1.2 Although other systems may be available,this practicecovers two of the most commonly used instruments;theClearwave 082 Optical Character Tester2and the MacbethPrint Contrast Meter.31.3 These
4、instruments also have the capability of predictingmachine readability of documents.This practice does notaddress this capability.1.4 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for infor
5、mation onlyand are not considered standard.1.5 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
6、limitations prior to use.2.Referenced Documents2.1 ASTM Standards:4F497 Practice for Use of the Electric and Electronic Type-writer as a Test InstrumentF597 Practice for Evaluation of One-Time Carbon Paper inCarbon-Interleaved Business Forms by Use of an ElectricTypewriterF686 Practice for Evaluatio
7、n of Image Quality Produced byCarbonless Copy Paper with an Electric or ElectronicTypewriterF1033 Test Method for Comparing Lift-Off Correction Me-diaF1125 Terminology of Image Quality in Impact PrintingSystemsF1174 Practice for Using a Personal Computer Printer as aTest InstrumentF1175 Practice for
8、 Using the Computer Impact Print-OutUnit as a Test Instrument for Manifold Comparison3.Terminology3.1 DefinitionsRefer to Terminology F1125 for definitionsof terms applicable to this practice.4.Summary Of Practice4.1 This practice describes the use of small-aperture(0.008-in.)(0.203-mm)reflectance m
9、eters in evaluating business copyimages from any source including but not limited to copiers,printers,typewriters,and facsimile machines.Image qualitycharacteristics common to all systems include reflectance,sharpness,cleanliness,and character width.Other characteris-tics may be evaluated depending
10、on the imaging method.4.2 The 0.008-in.(0.203-mm)optical character testersequipped with a one-to-one lens option have the ability to1This practice is under the jurisdiction of ASTM Committee F05 on BusinessImaging Products and is the direct responsibility of Subcommittee F05.03 onResearch.Current ed
11、ition approved Oct.1,2009.Published October 2009.Originallyapproved in 1992.Last previous edition approved in 2003 as F1443 93(2003).DOI:10.1520/F1443-93R09.2The sole source of supply of the apparatus known to the committee at this timeis Clearwave Inc.,8701 Buffalo Ave.,Niagara Falls,NY 14304(forme
12、rly manu-factured by Moore).If you are aware of alternative suppliers,please provide thisinformation to ASTM International Headquarters.Your comments will receivecareful consideration at a meeting of the responsible technical committee,1whichyou may attend.3The sole source of supply of the apparatus
13、 known to the committee at this timeis Macbeth,Division of Kollmorgen Instruments Corp.,405 Little Britain Rd.,NewWindsor,NY 12553-6148.If you are aware of alternative suppliers,please providethis information to ASTM International Headquarters.Your comments will receivecareful consideration at a mee
14、ting of the responsible technical committee,1whichyou may attend.4For 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.C
15、opyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 examine large areas for average reflectance in the 1 mode andmake measurements of small localized spots within these areasin the 20 mode.The graduated projection viewing screenallows accurate
16、 measurements of objects within the viewingarea in the 5 or 20 mode.4.3 Place the sample so that the image to be measured isover the 0.008-in.(0.203-mm)target area as observed on theviewing screen or in the viewing port.Reflectance values canbe read out directly on the digital meter.This capability may beused to measure reflectance of printed characters,base paper,or areas in which characters have been corrected,or combina-tion thereof.4.4 Images for evaluation are produced by various systemsusi
