@methogod , we are a county in-plant and run at least a pallet or more of NCR each week. We have three 6136's (which is the same as the 6120, but faster). We had Ricoh's in the past, then KM 1250's for about 6 years, and now the 6136's for about 2.5 years. The KM RIP and interface on this newer series is awesome. The vacuum feed is very reliable and the solid blacks are great. All that to say, we actually run a majority of our NCR jobs on digital duplicators. Any two-sided NCR jobs or numbered jobs run on the KM 6136's. There are several benefits to the digital duplicators (BTW, we've had Ricoh's, Duplo's, and Riso's, and the Duplo's were probably the best):
- The cost per print is extremely low on a duplicator, even lower than the CPC we pay on the 6136's.
- Every digital press manufacturer (KM, Xerox, Ricoh, Canon) will say their machine can handle NCR, and they can for a while. However, the coating from NCR comes off on the rollers/belts over time can can cause feeding or imaging issues. The duplicator has a very short and straight path, uses no heat, and uses a liquid ink instead of toner, so this isn't an issue for them.
- They have a small footprint (the size of an office copier) and use a standard 110 outlet.
- They are a low-cost investment (only $3,000 - $8,000 U.S. per machine, brand new).
- They need very little maintenance, most of which can be done by the operator since there aren't many components to the machine, and no heat.
There are some things to be aware of for digital duplicators:
- They make an internal 'master' similar to silk-screening so they only work for static images (no variable data, or if you need to do black out areas on the other copies)
- They only have one feeding source and they are usually limited to 1,500 sheets input/output (whereas we can load up all 3 vacuum feed drawers on our KM 6136 for longer unattended runs)
- The ink is oil based and takes a while to dry, so you need to handle the paper like it came off an offset press.
All this to say, if we didn't have the digital duplicators, yes, the 6120 or 6136 is a much better upgrade to the 951 because of the vacuum feed and upgraded RIP/interface and we could consistently run NCR there - knowing we would occasionally have to call in service to clean some internal components. Recently, we had 3-4 months without a duplicator because the new ones were stuck on a boat somewhere, and we had to run all of our NCR exclusively on the 6136's and it was fine.