Duplo DC645 cracking digital print

[UK Printer]

Morning All,

We have a DUPLO DC-645, we got it many moons ago (about 6 years ago) to cut/crease digital print. Long story short we made a move away from digital print to focus on our litho offering, the machine was doing a pretty good job, accuracy was pretty good and the crease would work most of the time but was prone to problems.

About 3 years ago the creasing tool wasn't performing that well, and because we were tending not to use the machine we didn't bother fixing it. Fast forward to today, we've got back into digital printing, got some really great kit and really want to get the Duplo working again.

We're being quoted around £15K to get the DC645 creasing again. This is obviously a lot of cash and we have been trying to find out from Duplo (with no success) can the DC645 crease print from the Kodak Nexpress without cracking occurring, is anyone running a Nexpress and using the DC645, i don't want to shell out all this money and then find the repair worked but the creasing tool isn't suitable for nexpress toner.

Also, has anyone had the rotary creaser fitted, we were interested in putting this in too, so we could put B3 sheets through convert to 2 A4's creased to go out the door. How is this tool for cracking?

Many thanks in advance

Tim

[curveto]

Morning All,

We have a DUPLO DC-645, we got it many moons ago (about 6 years ago) to cut/crease digital print. Long story short we made a move away from digital print to focus on our litho offering, the machine was doing a pretty good job, accuracy was pretty good and the crease would work most of the time but was prone to problems.

About 3 years ago the creasing tool wasn't performing that well, and because we were tending not to use the machine we didn't bother fixing it. Fast forward to today, we've got back into digital printing, got some really great kit and really want to get the Duplo working again.

We're being quoted around £15K to get the DC645 creasing again. This is obviously a lot of cash and we have been trying to find out from Duplo (with no success) can the DC645 crease print from the Kodak Nexpress without cracking occurring, is anyone running a Nexpress and using the DC645, i don't want to shell out all this money and then find the repair worked but the creasing tool isn't suitable for nexpress toner.

Also, has anyone had the rotary creaser fitted, we were interested in putting this in too, so we could put B3 sheets through convert to 2 A4's creased to go out the door. How is this tool for cracking?

Many thanks in advance

Tim

That quote/number seems *really* high. A brand new DC645 runs about that much (but I'm drawing from memory).

[david m. baker]

I think your toner cracking has more to do with the direction of the grain of your substrate than it does the Duplo. We use the same (or nearly the same) model in our shop--we run iGens and Nuveras--and the only time the toner cracks on scoring/folding is when we're trying to do so on the grain long direction.

[Despotes]

We ran the DC645 with standard scoring with output from a Konica 6500 without any issues. We now have a Xerox 700 and two Xerox 8002s that have no issues with cracking on the 645.

Grain could very well be your problem, this is common not just with the Duplo.

[UK Printer]

Evening All,

Thanks for the reply, issue isn't with grain direction. The creasing unit used to function pretty well, but since it started playing up the crease isn't too pronounced, i was hoping to hear from a Kodak user that was using a 645 and a nexpress, i had concerns that maybe this issue was something to do with the toner type used in the Nexpress, before we commit to the thousands quoted by Duplo to fix the creaser.

Many thanks all the same.

Tim

[halmac]

If you use an anvil creaser it won't crack no matter what grain etc. If you get an anvil creaser make sure it does both male and female scoring at the same pass. We have a morgana creaser and it works beautifully but we have to run book covers twice for scoring.

[UK Printer]

The 645 does have an anvil style creaser, its just not as good as the morgan a crease, however the automation on the 645 makes up for its shortcomings in the creasing dept.

The rotary crease is a retrofittable part, which allows you to put SRA3 sheets in and in one pass spit out 2 A4's creased ready to fold to A5.

Tim