Humidity is not a good thing. The idea is to remove water from the process not to introduce more. If it has never been explained before then let me tell you, most "de-humidifiers" don’t work, in fact, most introduce "more" humidity than they remove.
The small de-humidifiers that you buy at the local appliance store have such small fan motors that are over worked and they heat up. That heat causes the coil on the back of the unit to sweat. That sweat drips into the pan that you empty every day. Put your hand to the unit and tell me if you feel warm or cool air blowing out the back?
Seriously, do you think there is that much water in the air? If so we’d be fish and not printers.
Frankly speaking, you get what you pay for. Large capable industrial disaster recovery style de-humidifiers work well. These units run cool to the touch meaning that the water they collect "is from the air". Many have their own internal pumps as well. Costing only a few hundred dollars more than the units that don’t work well this is a good way to not only spend your money wisely but to get the proper job done.
I personally use an Oasis brand de-humidifier capable of pulling 6 gallons of atmospheric moister in a 24 hour period of time. Used mainly for flood recovery, it is ideal for keeping the screen making room "dry"!
If I collect 3 gallons of water from June to September that is a lot and it gets humid around here in July and August.
