In a "nutshell" as soon as the ink sits, it will start to separate. Gentle agitation and the sworling that hapens in the lines and dampers keeps it mixed, but if you let it sit over 24 hours you can "see" it separating in the lines. If you have open air system (bulk) any ink that is on top will skin, clump and eventually sink and possibly get sucked into the tubes. Dampers have filters that help keep this out of the head and nozzles, but this will have a negative effect on flow and the velocity and how the ink gets mixed. If you choose to use white ink, understand how to purge it from the system if you will not be using it on a daily basis. If you keep everything healthy, you might make it through a weekend of non use, but the time that it takes to get up and running on Monday AM may have be better spent (less time) by doing preventative care on Friday. The more printing you do the more economical it all becomes.Hey folks! I'm a newbie here; this is my first post except for one in the introduction forums. I just spent most of my free time during the last two days reading *all* the posts in this thread, so I'm a bit cross-eyed now. ;-) Anyway, I wanted to get a clarification from one of the experts. A while back there was a discussion about the problems with white inks and DTG printers. In a nutshell, the solids separate and clump together in the bottle or *gulp* in the printer head.
When does the timer start on this process? I'm new to all of this, so I'm trying to understand the problem better.
Also if you choose a baged/degassed system and you follow your maitenance, you can expect to get about 2 years out of a head. If you do bulk, you'll be lucky to get one year.