Digital BW, The Print

***Could you tell me WHY Epson recommends turning the printer off when
not in use? Is there truly a downside to leaving it on all the time?***

"Thank you for contacting the Epson Connection.
It is important to always turn your printer off by the power switch
(not by a surge protector or power bar) when not in use, as this
protects the printheads from exposure to air and dust which can cause
blocked nozzles.
If you are leaving your printer on for extended periods of time
without use, the printheads will be exposed to air and dust.

If you require further assistance with this particular issue, please
ensure all of our previous correspondence is contained in your reply,
so we canbetter track the history of this issue."

****OK...how much ink does the printer use on startup each time? Is
there documentation for the heads being protected from dust etc. when
the printer is off or for increase in clogs when it is left on?***

Thank you for contacting the Epson Connection.

"We do not provide information as to how much ink is used in a
cleaning cycle. It varies by printer model, by use, and by the type of
cleaningcycle called for.
Epson does not provide the ink volume in mls for its cartridges
because mls do not translate into any usable print information.  Mls
will not tell you how much printing you can get out of a cartridge.  
To get an idea of how much printing can be done from a cartridge,
Epson provides estimated page yields for the black cartridges and
color cartridges for its printers.
If you require further assistance with this particular issue, please
ensure all of our previous correspondence is contained in your reply,
so we can better track the history of this issue"