Regarding the life expectancy of printed documents using KYOCERA Document Solutions Printer and toners, as yet no information is available about how long laser printed output will last, mainly because laser printers have only been around for a relatively short time. We can however make recommendations with regards to prolonging the life of laser documents, these are as follows:
The toner has three months warranty cover from the date of purchase. It covers the toner for manufacturing defects on a Return-to-Base basis. The use of non-KYOCERA original toner is likely to cause print quality issues and ultimately, damage to the printer. Such issues or damage would not be covered under your printer warranty.