HP 3840 - Manual (Page 66)

• Do not remove the plastic tape covering the ink nozzles until you are ready to
install the print cartridge in the printer. If the plastic tape has been removed
from the print cartridge, do not attempt to reattach it. Reattaching the tape
damages the print cartridge.
Storing print cartridges
When print cartridges are removed from the printer, store them in a print cartridge
protector or an airtight plastic container.
A print cartridge protector comes with the photo print cartridge. If you store the print
cartridge in an airtight plastic container, make sure that the ink nozzles face down
but are not in contact with the container.
Inserting the print cartridge into the print cartridge protector
Slide the print cartridge at a slight angle into the protector, and snap it securely in
place.
Removing the print cartridge from the print cartridge protector
Press down and back on the top of the protector to release the cartridge. Slide the
cartridge out of the protector.
Caution: Do not drop the print cartridge. Dropping the print cartridge can
damage it.
HP Deskjet 3840 series printer User's Guide
66