This is not news. If you are shopping for a new printer you may find a warning about the compound mentioned in the title of this post.
Here in California, back in 2015, a lawyer made a case that gives gives the chemical a bad name.
This is about
Titanium Dioxide.
Here is a link about that lawyer:
https://grimaldilawoffices.com/successful-defense-in-proposition-65-titanium-dioxide-lawsuit/In a July 10, 2015 order, an Alameda County Superior Court judge found in favor of defendants in a Proposition 65 lawsuit alleging exposures to titanium dioxide in cosmetic products. The defendants successfully challenged the plaintiff’s 60-day notice based on admissions made by the plaintiff that it had not conducted any testing to confirm that the listed chemical was present in each product.
Here is a quick read:
https://en.wikipedia.org/wiki/Titanium_dioxide...Generally, it is sourced from ilmenite, rutile and anatase. It has a wide range of applications, including paint, sunscreen and food coloring. When used as a food coloring, it has E number E171. World production in 2014 exceeded 9 million metric tons.[4][5][6] It has been estimated that titanium dioxide is used in two-thirds of all pigments, and the oxide has been valued at $13.2 billion.[7]
So it's used in pigments.
The explains why inkjet printers get the Prop. 65 warning.
Now look at this Amazon link:
California Proposition 65 Warning Labels
So if you sell anything in California with that compound, you have label it!
Gag me with a spoon! 
