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HP CEO: You're 'bad investment' if you don't buy HP supplies
(www.theregister.com)
This is a most excellent place for technology news and articles.
I have always had a conspiracy theory that the ink management requirements are set by national security input. All printers have a yellow dot pattern added to every print to identify the printer by a forensics team. I wonder if this is why the ink landscape is so shifty. They want to make sure those dots get printed. My thought on why you can't print black and white when you are only missing colored ink.
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The conspiracy theory falls apart with black only printers. 🤷