We have had five or six GR 3770s over the years (since 2004), used for printing envelopes and flyers. They have been basically OK, but there's no Riso repair service in our area, and we've kept them running with duct tape and prayer. Our last Riso seems to have fizzled out now, and I'm wondering if we should replace it with a used 3770 -- OR are there newer models that would be more reliable? If so, what would be a recommended newer model that could still be purchased second-hand?
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Re: Best machine to replace GR 3770?
If you are looking for used machines, avoid the Riso RN line at all costs. Maybe the TR and CR lines as well - the machines weren't too bad but the ones I saw were used in undesirable ways, so the used ones are probably pretty beat up, and if I remember correctly max paper size is 8.5X11" too. The RP line was OK if the drive gears were updated, but keep in mind there are almost no OEM parts for them any more. Maybe a RP3790 in excellent shape would work.
As far as a machine that has any service life to it, a Riso RZ390 that was in decent shape would probably do the trick.
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