I bought a black ink for my hp photosmart c5 180 and the when i turn on the printer it says the ink has expired. Can i still use it or will i damage my printer. Thanks regards Anita

Hello
according to HP
Each ink cartridge has an expiration date. The purpose of expiration is to protect the printing system and to ensure ink quality. When you receive an ink cartridge(s) are expired message, remove and replace the expired ink cartridge, and then close the message. You can also continue printing without replacing the ink cartridge, by following the instructions on the HP All-in-One or the ink cartridge expiration message on your computer screen. HP recommends replacing the expired ink cartridges. HP cannot guarantee the quality or reliability of expired ink cartridges. Device service or repairs required as a result of using expired ink will not be covered under warranty.
You can get more detail from here
http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&cc=us&docname=c00819032&dlc=en&product=1153481
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