ASTM_F_935_-_00_2004.pdf

Designation:F 935 00(Reapproved 2004)Standard Test Method forComparing Cover-Up Correction Media1This standard is issued under the fixed designation F 935;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(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers information and procedures forevaluating several performance qualities of typewritercover-up correction tapes and tabs on a comparative basis forgeneral office use.1.2 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:2D 685 Practice for Conditioning Paper and Paper Productsfor TestingD 3460 Specification for White Watermarked and Unwater-marked Bond,Mimeo,Spirit Duplicator,Reprographic,and Laser Printer Cut-Sized Office PapersE 97 Test Method for Directional Reflectance Factor,45 0of Opaque Specimens by Broad-Band Filter Reflectrom-etry3F 221 Terminology Relating to Carbon Paper and InkedRibbon Products and Images Made TherefromF 497 Practice for Use of the Electric and Electronic Type-writer as a Test Instrument2.2ANSI Standard:PH2.17 Density MeasurementsGeometric Conditons forReflection Density4PH2.18 Density MeasurementsSpectral Conditions43.Terminology3.1 For definitions of terms used in this test method,refer toTerminology F 221.4.Summary of Test Method4.1 This test method consists of testing typewriter cover-upcorrection tapes and tabs under actual and simulated useconditions,using several techniques generally accepted in theinked ribbon industry.All tests should be performed under thesame conditions so that comparative results may be obtained.5.Significance and Use5.1 This test method may be used to evaluate severalperformance characteristics of typewriter cover-up correctionmedia on a comparative basis.5.2 This test method is suitable for manufacturing controlon a limited basis,due to the length of time required for sometests.6.Apparatus and Materials6.1 Electric or Electronic Typewriter Calibrate and adjustin accordance with the manufacturers suggestions and PracticeF 497.6.2 ReflectometerMeeting the geometric conditions ofPH2.17 and the spectral conditions of PH2.18.6.3 Environmental ChamberCapable of maintaining 1206 2F(49 61C)at 40%6 5%relative humidity for 48 h.6.4 Magnifier33 to 53.6.5 PaperGrade 4,Type I(20 lb 17 3 22-500;SIequivalent 75 g/m2)in accordance with Specification D 3460.The felt side of the paper shall be used for the test.All testsshall be made along the machine direction of the paper.6.6 Control RibbonA single strike film,multistrike film,or fabric ribbon of known quality and performance.6.7 Cover-up Tape or TabSince this test procedure iscomparative,two or more specimens of tape or tab should beselected for evaluation.7.Test Specimens7.1 The test specimens shall be a cover-up tape or tab orportion thereof not previously used or marred by handling.1This test method is under the jurisdiction ofASTM Committee F05 on BusinessImaging Products and is the direct responsibility of Subcommittee F05.02 on InkedTransfer Imaging Products.Current edition approved Dec.1,2004.Published December 2004.Originallyapproved in 1991.Last previous edition approved in 2000 as F 935 00.2For 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.3Withdrawn.4Available from American National Standards Institute,25 W.43rd St.,4thFloor,New York,NY 10036.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.8.Calibration8.1 Calibrate the electric typewriter or printer in accordancewith manufacturers instructions and Practice F 497.8.2 Calibrate and standardize the reflectometer in accor-dance with PH2.17 and PH2.18.9.Conditioning9.1 Testing should be conducted in an environment withstable conditions of temperature and humidity.Papers,controlribbon,and test samples should be conditioned for 24 h in thearea in which the test will be conducted.If possible,standardconditions meeting Method D 685 should be used.These are73 6 1.8F(23 6 1C)and 50 6 2%relative humidity.10.Procedure10.1 Creating Test Patterns:NOTE1Great care should be taken to produce accurate test patterns.The results of calculations and observations depend upon carefully madetest patterns that avoid slippage of paper,mistypings,and misalignmentsof character strikes.If possible,the test typewriter should be programmedto produce the test pattern thus reducing human error.10.1.1 Standar