One 215 Black cartridge had a black streak on all copies. No good
Response from hp.comBy Amanda , HP Care, July 5, 2022
Hello Doctor H,
I want to help find the cause of the black stripe. This black stripe is a rare and unique situation.
The first thing I would do is look for a leak. Leaks occur in a variety of ways. Inserting the cartridge with too much force causes leaks. If no leaks are present, check the copper contacts.
There is a possibility a smudge of ink is causing the black line. Cleaning this area will help the results. I hope these suggestions resolve the issue.
The toner is great. The delivery method was terrible! It was sent via FedEx and delivered by the USPS 11 business days later. When I purchased the toner, the website said it would be delivered in 3 - 6 business days.