1、Designation:F 854 83(Reapproved 2003)Standard Test Method forCleanliness of Carbon Paper1This standard is issued under the fixed designation F 854;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
2、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 describes a typewriter test that com-pares the cleanliness properties of carbon papers(one-time ormultiple use)and is based on resi
3、stance to feed roll marking thesmear of carbon images.1.2 This test method also describes how to compare thecleanliness properties of the backs of carbon papers.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
4、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:F 221 Terminology Relating to Carbon Paper and InkedRibbon Products and Images Made Therefrom23.Terminology3.1 Defin
5、itions:3.1.1 back cleanlinessthe freedom of ink on the back ofthe carbon sheet.3.1.2 feed roll cleanlinessthe resistance to transfer of inkto the copy sheet from the pressure of feed rolls.3.1.3 smear freedomthe freedom from tailing of the copyimage when the carbon is pulled from forms.3.1.4 tailing
6、the streak-type marks appearing on carbonimages on the copy papers.3.1.4.1 DiscussionLess tailing would be noted withcleaner carbons.4.Summary of Test Method4.1 The comparative typewriter test involves using thecarbon papers in a prescribed set of forms and observing theresults.4.2 The cleanliness o
7、f the backs of carbon papers involvesrubbing them with clean sheets of bond-type papers andobserving and comparing the amount of ink transfer.5.Significance and Use5.1 This test method can be used in new applicationsevaluations,product development,and specification accep-tance procedures.6.Interfere
8、nces6.1 Variation in platen roll durometer.6.2 Variation in feed roll durometer.6.3 Variation in feed roll pressure.6.4 Different operators.6.5 Different typewriters.6.6 Different pressures or touch by the same or differentoperators.7.Apparatus7.1 Typewriter,on which the carbon paper being evaluated
9、would be normally used.8.Sampling8.1 Carbon paper representing homogeneous lots or batchesshould have samples taken from at least two different areas.Donot use the top or bottom sheet from any stock of carbon paperas a sample.9.Procedure9.1 Typewriter Test:9.1.1 Assemble a five-part form using paper
10、s measuring8.50 by 11.00 in.(215.9 by 279.4 mm).Use a 15-lb(17 by22-in.;500 sheets)(56.4 g/m2)as the top part.Below the toppart,use four parts of 12-lb(17 by 22-in.;500 sheets)(45.1g/m2).Staple the left and right corners approximately12in.from the top.9.1.2 Interleave four sheets of the test carbons
11、 measuring8.5 by 11.00 in.(215.9 by 279.4 mm)into the five-part form sothat the carbon papers extend below the bottom of the set by12in.NOTE1Always handle form and carbon paper at the edge with care toavoid unintentional coating transfer.1This test method is under the jurisdiction ofASTM Committee F
12、05 on BusinessImaging Products and is the direct responsibility of Subcommittee F05.02 onInked-Transfer Imaging Products.Current edition approved Dec.30,1983.Published February 1984.2Annual Book of ASTM Standards,Vol 15.09.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshoho
13、cken,PA 19428-2959,United States.9.1.3 Center the bail rolls of a clean and serviced typewriterbetween the front feed rolls and completely release the feedand bail rolls.9.1.4 Carefully insert the assembled set into the typewriterso that it is properly centered and registered.9.1.5 Carefully close t
14、he feed rolls and place the bail rollsagainst the form.9.1.6 Type the date and carbon identification 1 in.from thetop followed by a four-line paragraph maintaining 1-in.mar-gins on both sides.9.1.7 Turn the cylinder knob rolling the form back until thetop with the staples is under the bail rolls.Gra
15、sp the top of theform and pull through and out of the typewriter at a steady rate.9.1.8 Place the form on a smooth,flat surface.Removestaples.Carefully remove carbon papers to avoid unintentionalcoating transfer.9.1.9 Retain the deleaved form for examination,numberingeach part.9.2 Back Cleanliness T
16、est:9.2.1 Staple a sheet of the test carbon paper,with uncoatedside up,to a sheet of similarly sized 15-lb bond(17 by 22-in.;500 sheets)(56.4 g/m2)and place on a smooth,flat surface withthe bond paper down.The uncoated side of the stapled testcarbon paper will be up.9.2.2 With one hand,hold the test carbon sheet at the topedge.9.2.3 With other hand,grasp a piece of bond-type papermeasuring approximately 5 by 5 in.(127 by 127 mm)and placeon top of the test carbon sheet adjacent to the other hand.