Epson Stylus Color 640 User Manual page 14

Keep ink cartridges out of the reach of children.
Do not dismantle the ink cartridges or try to refill them. This
could result in damage to the print head.
Once you install an ink cartridge, do not open the clamp or
remove the cartridge except to replace it with a new one. The
cartridge may become unusable otherwise.
Install the ink cartridge immediately after you remove it from its
foil package. Leaving the cartridge unpacked for a long time
before use may result in reduced print quality.
Do not use an ink cartridge beyond the date printed on the
cartridge carton. For best results, use up the ink cartridges
within six months of installing them.
Do not shake an ink cartridge; this can cause leakage.
Always turn the printer off using the Ppower button. When this
button is pressed, the Ppower light flashes briefly then goes
out. Do not unplug the printer or turn off the power to the outlet
until the Ppower light is off.
Before transporting the printer, make sure the print head is
capped in the far right position and the ink cartridges are in
place.
Introduction Page 14