overview hp printer maintenance kits ensure that your hp printer is always operational and offers the highest quality printing possible. function ensure uninterrupted operation of the hp printer with optimum quality by regularly replenishing supplies. hp maintenance kits ensure your hp printer is always available, helping you maximize your business efficiency. hp printer maintenance kits include user-replaceable parts that enable you to alert you that a part requires maintenance. hp maintenance kits include durable material and are, of course, covered by hp warranty. specifications printing technology laser yield (black white) 225,000 pages annotation on page yield the actual yield depends largely on the printed content and other factors. for more information, see operational requirements storage temperature range 15 to 32? c storage humidity 10 to 90% rh