Different implementations of color tables and color balance optimization among
manufacturers can lead to yield variations between color cartridges, even if they have
the same toner weight. To account for this, ISO supports a second reporting method
called “composite yield,” allowing a single average reporting yield for Cyan, Magenta
and Yellow toner cartridges. Black is reported separately as an individual yield.
Average Continuous Composite CMY Yield: XX,XXX pagesAverage Black Continuous
Yield: XX,XXX pages
ISO/IEC 19752, ISO/IEC CD 19798, and IS0/IEC 24711 specify the use of a standard
test page for black-and-white and multiple test pages for color products, explicit testing
procedures, statistical sampling, environmental controls and well-defined cartridge
end-of-life status. More detail on these specifications is available in Section 4 of this
document.
Xerox has adopted ISO/IEC 19752 for testing and reporting toner cartridge yields for
its black-and-white printers and MFPs. Likewise, Xerox has adopted ISO/IEC 19798
for testing and reporting toner cartridge yields and ISO/IEC 24711 for testing and
reporting solid ink stick yields for its color printers and MFPs. Adopting ISO/IEC yield
reporting standards benefits manufacturers and customers, enabling consumable yield
comparisons across product lines and manufacturers.
Test Parameters and Conditions
Printers and Cartridges — A minimum of three printers or MFPs are tested, using a
minimum of three toner cartridges per device. Toner cartridges are procured in the
open market from multiple sources, and for newly developed printers or MFPs cartridges
should be sourced from different production lots. Testing nine samples of each toner
cartridge produces lowest predicted yield estimates with 90% statistical significance.
Standardized Test Page — A single page (see Figure 1) is used for testing. Area
coverage on the page is just below 5%. Pages are printed in a semi-continuous print
mode, stopping only for paper replenishment.
Device Setup — Printers are set up according to manufacturer instructions using default
drivers and settings. New printers must run through one complete toner cartridge before
starting the test.
Environmental Conditions — Testing must be done in an environment where
temperature and humidity can be maintained within acceptable parameters.
A. Temperature Range: 23º C ± 2º C (73ºF ± 4ºF)
B. Humidity Range: 50% ± 10% RH
Specific “Toner Out” Conditions — If a printer is equipped with “Toner Out” sensing,
printing stops when this message is issued and the printer will no longer function. If a
manufacturer recommends shaking toner cartridges, this is done at “Toner Low” but
not more than two times. If a printer does not stop at “Toner Out”, cartridge testing is
stopped as soon as fading bars appear. If a printer has “Toner Out” sensing but fading
bars appear (even after toner shaking), testing will stop.
The ISO/IEC
Consumable Yield Standard (continued)
4
(4 pages)
(2 pages)
(242 pages)
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