# inkjet page yield calculation based on ISO 24711 / find the C M Y K percentages

Hello,

i recently found out that, since 2006, most printer and cartridge manufacturers calculate inkcartridge yield based on the ISO 24711 / ISO 24712 norm.
This makes the market (a bit) more transparent for end users to do an comparison and or a cost per page calculation.

Below an example, of Brother declaring that they use this norm and it depicts an thumbnail image of the "iso images" used to calculate page yield.
You can see the thumbnails on page 4.

http://pub.brother.com/pub/com/iso_yield/ink_24711/declared_page_yield_iso24711_en.pdf

my questions are these :

Can i download these "ISO 24711 / 24712 test" documents/photographs somewhere so that i can use them ?
Does anyone now the individual percentages of each C M Y K color used of these 5 pages ?

Obviously, this info has to be somewhere, how else has it been been calculated ?

These could help me a lot. I'm planning doing an analysis/study myself, and create an "exact" page calculation off the documents i print (i know their percentages).
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Commented:
From what I have read, I'm going to guess that you have to purchase it.

http://webstore.ansi.org/RecordDetail.aspx?sku=ISO%2FIEC+24711%3A2007

Thanks,
RushB
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Author Commented:
Thats stupid.

That leaves only question 2.

Does anyone have the percentages of the CMYK colors used in the document ?
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Commented:
5% each -

For this reason, the five standard pages (Figure 2) used for ISO/ IEC 19798 and 24711, with a mix of text and graphics and different amounts of coverage, in aggregate represent approximately 20% coverage (approximately 5% each for black and the three colors – cyan, magenta, and yellow). If your average printed page contains significantly higher page coverage than the ISO standard page(s), it is reasonable to expect actual page yield to be lower than the stated page yield. And, while page coverage is the factor most obviously related to print cartridge yield, the effect of the other factors can be as much or greater.

http://www1.lexmark.com/content/en_us/products/ink-toner/iso_page_yields_overview.shtml

Thanks,
RushB
0
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