The nature of ink carts is that they are a liquid. Plus, the flow must be conductive in order to print right. You didn't mention how long you're away, but if this going to be your pattern, then store the printer in an "air-tight" container. Seems odd, but reduction of open air flow will help. But, inkjets are simply a cheap printer no matter how much you paid for it. Also, you have an Epson, one of the most problematic printers due to ink clogs, they simply are more prone to it. If you continue to to use inkjets, then look into ink carts that have the "printhead" as part of the make-up. As already stated to you, with the overall cost of ink carts, etc., then a laser printer maybe a better alternative.