I'm sure these are good cartridges in most cases. Mine started typing jagged lines of text. I've cleaned and set up everything I could find and the printer says everything is fine. Clean the cartridges with an alcohol wipe as recommended. I tried to find a product support contact on Ink Docs and on Amazon. No phone numbers or email addresses were found, only promises that the cartridges are covered by a warranty of up to a year. What good is a guarantee if there is no way to contact the seller?
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