INKS - One way of measuring across brands, for easy comparison
For people to be able to compare page yields between different printers and manufacturers, there is one industry-wide testing methodology. Canon, HP, Epson, Lexmark and other industry leading manufacturers have worked closely with the International Standards Organization (ISO) to establish this standard. It is called "ISO/IEC 24711".
Page yield data should be used as a starting point for comparison purposes, and not to predict the exact yield you will get from your printer and cartridge. Likewise, the declared yield is not intended to be the minimum number of pages that the cartridge will print. Rather, page yield data is meant to estimate the average yield expected from a particular cartridge when measured using the ISO test methodology in connection with a designated printer system. Individual cartridges can perform above and below this average due to variation in the cartridge manufacturing process. Additionally, actual yield varies considerably based on factors such as the content of printed pages, typical printer job size, the environmental conditions during operation and the amount of color printing relative to monochrome printing.
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