1、Designation: F 497 00 (Reapproved 2004)Standard Practice forUse of the Electric and Electronic Typewriter as a TestInstrument1This standard is issued under the fixed designation F 497; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision
2、, 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 practice covers standardized procedures utilizingthe electric or electronic typewriter as an imagi
3、ng device formeasuring the performance properties of carbonless paper,carbon paper, inked ribbon, and similar image producingproducts.NOTE 1Electric and electronic typewriters covered by this practicehave a full-character type element. Examples of such elements are typebar, ball, thimble, and daisy
4、wheel.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. Refere
5、nced 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 andLaser Printer Cut-Sized Office PapersE 284 Terminology of AppearanceF 221 Terminology Rel
6、ating to Carbon Paper and InkedRibbon Products and Images Made TherefromF 549 Terminology Relating to Carbonless Copy ProductsF 909 Terminology Relating to PrintersF 1125 Terminology of Image Quality in Impact PrintingSystems2.2 ANSI Standard:PH 2.36 Terms, Symbols, and Notation for Optical Trans-mi
7、ssion and Reflections Measurements3PH2.17 Density MeasurementsGeometric Conditions forReflection Density3PH2.18 Density MeasurementsSpectral Conditions33. Terminology3.1 Definitions:3.1.1 For definitions of terms used in this practice, refer toTerminology E 284, F 221, F 549, and F 909.4. Summary of
8、 Practice4.1 This practice consists of using an electric or electronictypewriter under specified conditions to produce images for theevaluation of carbon paper, carbonless paper, inked ribbon, andpaper manifold sets on a comparative basis.5. Significance and Use5.1 This practice is intended to provi
9、de a means of rapidevaluation of comparative image quality relative to carbonpaper, carbonless paper, inked ribbons, and similar image-producing products.6. Interferences6.1 Many electric and electronic typewriters are subject totype impact variations due to fluctuations of line voltage.Voltage stab
10、ilizing devices, recommended by the typewritermanufacturer, can be used. If a stabilizing device is not used,tests should be run at periods when the line load is low orstabilized.6.2 The densitometer readings will also vary with voltagefluctuations. The same precautions as in 6.1 should be taken.6.3
11、 In densitometer readings care should be taken not toconfuse width of line with intensity.6.4 Fluctuations of temperature and humidity will affect thepaper used for image reception. Tests run on different days1This practice is under the jurisdiction of ASTM Committee F05 on BusinessImaging Products
12、and is the direct responsibility of Subcommittee F05.02 on InkedTransfer Imaging Products.Current edition approved Dec. 1, 2004. Published December 2004. Originallyapproved in 1985. Last previous edition approved in 2000 as F 497 00.2For referenced ASTM standards, visit the ASTM website, www.astm.or
13、g, 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, 25 W. 43rd St., 4thFloor, New York, NY 10036.1Copyright ASTM Internationa
14、l, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.could show variations in results. All tests should be dated andtemperature and relative humidity during the tests recorded.7. Apparatus7.1 Typewriters, to be used to prepare images.An electric orelectronic typewri
15、ter in normal use for the application andadjusted to the manufacturers specifications.7.2 Reflection Densitometer, meeting the geometric condi-tions of PH2.17 and the spectral conditions of PH2.18, andmeasuring reflection density as defined in ANSI PH 2.36. Theaperture diameter of the instrument sha
16、ll not be less than theline spacing of the typewriter.8. Materials8.1 White bond paper, conforming to Specification D 3460,Grade Number 4, unwatermarked, basis weight 20 lb (75 g/m2 g).9. Calibration and Standardization of Typewriter9.1 Select upper case “6,” “B,” or “ electronic typewriter; image q
17、ualityF 497 00 (2004)2ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringeme
18、nt of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or
19、for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views kno
20、wn to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).F 497 00 (2004)3
