ASTM_F_1050_-_F_1050M_-_87_2010e1.pdf

Designation:F1050/F1050M87(Reapproved 2010)1Standard Test Method forDetermining Winding Torque and Tension of TypewriterRibbons1This standard is issued under the fixed designation F1050/F1050M;the number immediately following the designation indicates the yearof 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.1NOTEUnits information was editorially revised in December 2010.1.Scope1.1 This test method covers the determination of film ribboncartridge wind tension and torque.The instruments describedin this procedure may be used for specification acceptance,manufacturing control,product development,or researchapplications,or combination thereof.1.2 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 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.Summary of Test Method2.1 This test method is intended to determine the dynamiccartridge tension and torque under controlled conditions.Thetest equipment and test procedures are intended to simulatecartridge tensions and torque under actual end-use conditions.Although specific manufacturers have been identified for thisequipment,any torque and tension measurement equipmentwith equivalent signal output capabilities would be suitable.2.2 To determine the mean cartridge tension and torque,acartridge is put on a calibrated test fixture with the ribbonlooped around the center wheel of a tension head and theribbon being driven by a variable speed motor.2.3 The tension head allows cartridge tension to be read ingrams-force and torque in ounce-force inches.3.Significance and Use3.1 This test method enables tension and torque compari-sons between cartridges and facilitates process control.4.Interferences4.1 Wide variations in environmental conditions(tempera-ture and relative humidity)could affect the cartridge windtension with this test procedure.4.2 Tension range requirements vary with cartridge tensiontechniques.For example,ratchet and paw ranges from 10 to 60g,foam from 60 to 150 g,and wrap spring from 30 to 80 g.5.Apparatus and Materials5.1 Tension Heads,100 and 200-g.25.2 Test Fixture Platform,consisting of original equipmentmanufacturer ribbon deck,a freely turning wheel attached tothe ribbon supply side of the platform,and variable speed drivemotor.5.3 Calibration Weights,of 20 g and 50 g.5.4 Digital Applicator.25.5 Recorder.2,35.6 Speed Controller.45.7 Torque Measurement Drive Motor.6.Test Specimen6.1 The test specimen shall be an entire ribbon cartridge thathas not been disrupted since it was assembled.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 Oct.1,2010.Published December 2010.Originallyapproved in 1987.Last previous edition approved in 2005 as F1050 87(2005).DOI:10.1520/F1050_F1050M-87R10E01.2The sole source of supply of the test equipment components known to thecommittee at this time is Tensitron Corp.,733 South Bowen Street,Longmont,CO80501.If you are aware of alternative suppliers,please provide this information toASTM International Headquarters.Your comments will receive careful consider-ation at a meeting of the responsible technical committee,1which you may attend.3The sole source of supply of the Tensitron G-C400 Recorder known to thecommittee at this time is Tensitron Corp.,733 South Bowen Street,Longmont,CO80501.4The sole source of supply of the Minarick SL-15-1 Speed Controller known tothe committee at this time is Minarick Corporation,905 East Thompson Ave.,Glendale,CA 91201.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 7.Identification7.1 For the identification of ribbon cartridges,the followinginformation is suggested:7.1.1 Coated jumbo roll(batch)number,7.1.2 Assemblers name or number,7.1.3 Date and time of assembly.8.Calibration8.1 Calibrate the chart recorder and tension head at the startof each shift or more frequently depending upon the amount ofdrift encountered with the recorder.8.2 Select and install the tension head with a range compat-ible with the ribbons to be tested.For example,ribbons withwrap spring or ratchet and paw tension systems may use a headwith a range of 0 to 100 g.However,cartridges that use a foampad tensioning system may require a head with 0 to 200