The problem is that when a newbie arrives an gives wrong advice it needs correction. The reputation of the forum is at stake.
If the reputation of the forum depends on the idea that an Epson 4900 won't cap the head until it is powered off, maybe it is about time some "newbie" with enough experience to know better arrives and sets things straight! Eh?
How would one know when a printer caps the head? Well. reading the published documenation seems obvious. So you think that is countered by claims of pirated documentation? Not that it would make any difference at all about head capping, and not that there is any evidence either...
The real problem here is that I've pointed out a couple of very simple facts about printers, supported with very good references, and all you have left to argue with is emotional diversions in support of incorrect observations about printers.
1) The print heads are capped when the machine is powered up and not in use. Powering it down does not affect capping.
2) Manufacturers fully expect and support having the printers powered up continuously, even for releatively extended periods of many days of non-use.
3) Powering down a printer causes potentially excessive waste of ink due to automatic head cleaning at every power up.
4) The electricity saved by powering down an Epson 4900 is pennies per years (vastly less than the cost of paying someone for the time it takes to power down a printer at the end of each work day).
Hence there are no valid technical or financial reasons to turn the printer off on a daily basis. Not that is hurts anything, it's just unnecessary.
If you think any of that is wrong, argue with something other than claims my documentation is stolen and that I'm a nasty guy for saying something you didn't know about.