Epson Stylus Photo User Manual page 18

Introduction
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.
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