What is a photo black cartridge for?

ColourKid

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Indeed I saw the Maxify has a wide range. Unfortunately Canon's site is difficult to navigate and lacks an easy comparison tool. But this last part of the study is by no means as difficult as what went before. ;)

Thanks for all your (plural) invaluable advice and explanations!!
 

PeterBJ

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This post might be a little late, but here you can see that photo black ink is only used in black and dark grey areas. Here is a well known test image with grey scales and more. A 200 times magnification of the boundary between two grey fields shows this.

Here is the test image with the enlarged area marked:

Dye black in greyscale 2.jpg


And the enlarged area:

Dye black in greyscale 1.jpg
 
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