Minolta Bizhub 350 or 450 has capability of producing 12.25 x 18 and duplexed. Also if you purchase the fiery RIP you can produce and control decent color, although by no means for color proofing. Hope this helps. Not totally sure of costs.
Automatically Autonomous Automation
Although the autonomous car is not quite ready, a lights out print operation is something you can do right now if you have a comprehensive Print MIS (Management Information System). The advantages can put money on your bottom line. So what’s your next step?
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