Why is all the text gray in Windoze?

[PeterBJ]

Swapping one possibly damaged PGBK cartridge possibly containing a wrong or bad ink with another suffering from possibly the same errors, doesn't yield any useful information IMO. That's why I and others think trying a new Canon OEM cartridge is an important test. Printing a Windows printer test page using default settings eliminates errors caused by possibly wrong settings in an office program or text editor or different properties of PDF files. By suggesting these tests I am trying to reduce the number of unknowns and confusion.

To test if the ink used to refill the PGBK cartridges is really pigment ink, you could use a simple dilution test posted by @ThrillaMozilla . Add a few drops of ink to a small amount of water like 100 ml or 4 fl. oz. A pigment black ink will stain the water to a neutral grey or nearly so, a dye black or grey will produce a purplish stain to the water.

Here is the result of my testing KMP-U pigment black ink and Image Specialists WJ1109 photo black, the pigment black is at the right:

 

[stratman]

The above is from a Windoze printer test page, but cropped. This one isn't. Feel free to ignore the see-through from the other side.

In order to decrease the risk for confusion and incorrect analysis, only print on one side of the paper for the tests we request you post.