1、Designation: F1424 92 (Reapproved 2011)Standard Test Method forEstimating Toner Usage in Full-Color Copiers Utilizing DryMono- or Dual-Component Toners1This standard is issued under the fixed designation F1424; the number immediately following the designation indicates the year oforiginal adoption o
2、r, 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 test method describes a procedure for estimatingthe number of copies that
3、 can be produced for a given unit oftoner in a full-color copier using dry mono- or dual-componentdevelopment.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 safet
4、y and health practices and determine the applica-bility of regulatory limitations prior to use. For specifichazards, see Section 9.2. Referenced Documents2.1 ASTM Standards:2D5039 Test Methods for Identification of Wire Side of Paper(Withdrawn 2009)3F335 Terminology Relating to Electrostatic Imaging
5、F875 Test Method for Evaluation of LargeArea Density andBackground on Office Copiers2.2 ASTM Adjuncts:Density Target Test Sheet (F875)4Toner Yield Test Target (F1424)53. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 dual-component developmenta mixture of dry tonerand iron oxide
6、 developer that is used for developing electro-static images in copiers (see Terminology F335).3.1.2 full-color copierscopiers that can reproduce colororiginals containing gradations of color. Full-color copiers mayhave up to four individual color developing units containingfour different color tone
7、rs. These colors are frequently cyan,magenta, yellow, and black. The original is scanned by meansof an analog system using a series of color filters or by meansof a digital scanning process. The full-color copier may requireup to four scans to read the original. The copier individuallyapplies one or
8、 more color toners to a transfer drum/belt orphotoconductor, or both, which is in turn deposited on thepaper.3.1.3 mono-component developmenta single componentdry toner used for developing electrostatic images in copiers(see Terminology F335).3.1.4 toner usageamount of toner (milligrams per copy)rem
9、oved from the toner reservoir during the copy process.4. Summary of Test Method4.1 A full-color copier is set up to standard operatingparameters and operated under a controlled job stream andenvironment for a length of time sufficient for stable perfor-mance (see Fig. 1). A known, or estimated quant
10、ity of toner isused over the length of the test and this result along with thetotal number of copies generated is used to estimate the numberof copies produced per unit of toner.4.2 A full-color copier may have up to four individualdeveloping units containing up to four different color toners(usuall
11、y cyan, magenta, yellow, and black). In some cases, theblack developing unit may be dual-component while the colordeveloping units may be mono-component (or vice versa). Thistest method is intended to address the toner yield of each typeof development systems (mono- or dual-component).5. Significanc
12、e and Use5.1 This test method can be used to evaluate the perfor-mance of different toners in a common machine. It can also beused to evaluate the economics of toner usage when makingmachine-to-machine cost-per-copy comparisons.5.2 This test method provides only a point of estimate thatis subject to
13、 a significant number of variables that are not easily1This test method is under the jurisdiction ofASTM Committee F05 on BusinessImaging Products and is the direct responsibility of Subcommittee F05.04 onElectrostatic Imaging Products.Current edition approved Oct. 1, 2011. Published September 2012.
14、 Originallyapproved in 1992. Last previous edition approved in 2001 as F1424 92 (2006).DOI: 10.1520/F1424-92R11.2For 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
15、standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from ASTM International Headquarters. Order Adjunct No.ADJF0875. Original adjunct produced in 1994.5Available from ASTM International Headquarters. Order
16、Adjunct No.ADJF1424. Original adjunct produced in 1992.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1measured. Toner-based imaging systems are not 100 % effi-cient. Some toner is lost to the surroundings (inside or outsideof the cop
17、ier). This loss may be significant enough to affect thetotal number of copies produced by a specific amount of toner.Anyone making a decision based on the results of this testmethod should carefully consider the accuracy of the resultsand other pertinent data.5.3 Actual use of the copier in normal o
18、perating conditionswill most likely result in toner usage values different fromthose generated in this test method.6. Interferences6.1 Variations in toner usage will occur for many reasons,such as the following:6.1.1 Machine adjustments.6.1.2 Operating environment.6.1.3 Varying use of special copy p
19、roducts.6.1.4 Number of copies on the photoconductor or developer,or both.6.1.5 Variations in copy paper.6.1.6 Operator variability.6.1.7 Batch-to-batch toner and developer variability.6.1.8 Machine-to-machine variability.6.1.9 Variations in document area coverage.7. Apparatus7.1 Balance, reading to
20、 the nearest 1 g.7.2 Reflection Densitometer or Reflectometer, capable ofmeasuring a 6-mm solid circle.8. Reagents and Materials8.1 Sufficient quantities of paper, toner, developer (ifrequired), and photoconductor to run the test (refer to 11.6).8.2 Test Targets:8.2.1 Density Target Test Sheet, as s
21、hown in Fig. 1 of TestMethod F875.48.2.2 “k s” with Graphic Elements/Toner Yield Test Target,as shown in Fig. 2.59. Hazards9.1 Machine-to-machine comparisons should be made, ifpossible, with the same manufacturing lot of toner ordeveloper, or both.9.2 Any comparisons between machines or toners shoul
22、dcarefully take into consideration the test conditions used andthese conditions should be documented.9.3 The test must be controlled as described in this testmethod. Casual use of the copier during the test will affect theresults.9.4 The toner usage estimated with this test method may notaccurately
23、predict actual field results. Actual results willdepend not only on those interferences listed in Section 6, butalso on a number of additional variables:9.4.1 Type of originals used.9.4.2 Machine and service variability.9.4.3 The users image quality requirements.9.4.4 The number of copies per origin
24、al.9.4.5 The use of secondary receivers.FIG. 1 Sample Data SheetFIG. 2 “ks” with Graphic ElementsF1424 92 (2011)29.4.6 Variations in copy papers.9.4.7 A copier that produces a lower average print densitymay have a lower average toner usage than a similar copierproducing a higher average print densit
25、y. This is especiallyimportant to note when making copier-to-copier comparisonsusing the same toner.10. Conditioning10.1 Condition the paper (in wrapper), toner, developer,photoconductor, and copier in the test environment for 24 hprior to initiating the test.11. Procedure11.1 Control the environmen
26、t in which the following pro-cedure is carried out to reduce adverse effects. Control thetemperature within 65F around the mean temperature se-lected for the test. Control the relative humidity within 610 %around the mean relative humidity selected for the test.11.1.1 Measure the actual temperature
27、and relative humidityperiodically during the test and record for any future compari-son tests.11.2 The machine in which the toner usage will be measuredshould be thoroughly cleaned by an authorized service repre-sentative. Perform any prescribed preventative maintenanceprior to loading the test tone
28、r.11.2.1 Adequately service the machine to increase theprobability of a long copy run without failure.11.3 Set up the full-color copier to the manufacturersspecifications with a new photoconductor and each developingunit with new developer (if applicable).11.4 Design a log sheet on which to record s
29、ignificantevents during the running of the test.11.5 Record the initial copy count from the appropriatecounter before the toner is loaded into the machine.11.6 Record the color of the toner under test and select thecopy color desired on the copier control panel.11.7 The procedure requires that the m
30、achine and toner beused long enough to provide stable performance. Use thesample data sheet (Fig. 1 and Fig. 3) or the procedures outlinedin 11.8 to 11.11, or both, to verify stable performance. Thelength of the verification process is defined as: (a) onedeveloper life according to the manufacturers
31、 recommendedreplacement schedule, (b) 50 times the rated machine speed incopies per hour, or (c) whichever comes first. For mono-component development machines, the length of the verifica-tion process is defined as: 50 times the rated machine speed incopies per hour. Throughout the test, sequentiall
32、y add the tonerbeing evaluated.11.8 Determine the estimated toner usage by one of thefollowing ways depending on the copier being used and thedegree of serviceability.11.8.1 Some machines, with possible assistance from themanufacturers service representative, allow for the weighingof all components
33、of the toning subsystem. In this case, recordthe following measurements during the procedure.11.8.1.1 Weight (Wo) to the nearest 1 g of the toningsubsystem components including any installed toner.11.8.1.2 The copy counter reading at the start (Co).11.8.1.3 Net weight (Ti) to the nearest1gofeach uni
34、t oftoner added to the toning subsystem during the procedure. Thiscan be done by directly weighing the toner container before itis loaded in a copier and after it is removed.11.8.1.4 Weight (Wf) to the nearest1gofthetoningsubsystem components including any remaining toner at theend of the test.11.8.
35、1.5 Copy counter reading at the end of the test (Cn).11.8.1.6 Total weight (Wt) of the toner used during the testcan be calculated by adding the initial weight of the toningsubsystem components and the total net toner added during thetest, and then subtract the final weight of the toning subsystemas
36、 shown in the following equation:Wt5 Wo1T11T21T311Tn! 2 Wf(1)11.8.1.7 Calculate the actual toner usage in milligrams/copyby dividing the total toner used in grams 1000 by the numberof copies (Wt 1000)/(Cn Co).11.8.2 With some copiers, it is not physically possible toweigh the components of the tonin
37、g subsystem, or serviceassistance may not be readily available to provide access tothese components. Because potentially useful (available) tonerin the toning system cannot be measured, it will be necessaryto estimate toner usage over some steady-state period ofoperation. For this method, record the
38、 following measurementsduring the procedure.11.8.2.1 Record the machine copy count (Ci) as each unit oftoner is installed to replenish the development unit. Add thetoner only when the replenishment sensor indicates an “addtoner” condition.11.8.2.2 Calculate and record the new weight (Ti) in gramsof
39、each unit of toner added in accordance with 11.8.1.3.11.8.2.3 Estimate the toner usage in milligrams/copy usingthe following equation:toner usage 5 1000! 3 T21T311Tn21!/Cn2 C2! (2)FIG. 3 Sample Data SheetF1424 92 (2011)311.8.2.4 Note that the test is considered to begin with theaddition of the secon
40、d unit of test toner. The first unit is usedto set the copier into a steady-state condition. The initial tonerweight and copy count is recorded to indicate the establishmentof a steady-state condition.11.9 Conduct the test using the standard toner usage testtarget identified in 8.2.2. This test meth
41、od provides a constantjob stream and eliminates one source of variability. Use thesame selected document for all tests in the comparison.11.10 Rotate the toner usage test target 180 on the platenevery 500 copies to reduce the potential of fatiguing thephotoconductor.11.11 Make all copies exclusively
42、 on either the wire or feltside of the paper (see Methods D725).11.12 Monitor the image quality during the test as a checkon copy uniformity. Use the density and background test targetin accordance with 8.2.1 at the beginning of the test and atintervals equal to the number of copies that can be made
43、 in 2h of machine operation. Record the density data and copycount at each measurement. Readjust the copier if the densitychanges by more than 5 %.11.13 Repeat 11.1 to 11.11 for each resident color develop-ing unit.12. Interpretation of Results12.1 The estimated toner usage determined by this testme
44、thod relates only to the relatively limited and controlledconditions under which the test method is used. It is useful inmaking comparisons between machines or toner only underthese conditions. Variations in machines, toners, service, andoperating conditions may result in toner usage values differen
45、tfrom those estimated by this test method.13. Precision13.1 The precision of the procedure for estimating the tonerusage in full-color copiers is being determined. Using this testmethod, one laboratory has begun testing in order to gathermean-range data.14. Keywords14.1 dual-component development; f
46、ull-color copier; mono-component development; toner; toner usageASTM 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 suc
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