Dry Cylinder//Ink Pump Issues

[pj4nh]

Hello,

My red cylinder just started acting up after a successful long run over last week.

I was running a very small image in red but it was about 1500 copies. After I tried to switch from Bright Red to Red (after receiving the replace ink cartridge message) the cylinder would no longer ink up.

The ink pump was activated and ink is being pumped into the drum but no impression is being made. After running about 500 copies with a dark scan, still no image appears.

I've run test modes 887 to activate the ink pump about 15 times and still to no avail.

Any suggestions?

PJ

[LA TECH]

Re: Dry Cylinder//Ink Pump Issues

What model/series is it?
Seem the pump is clogged, the little filter inside the pump is not letting the ink through even though the pump is being activated

[pj4nh]

Re: Dry Cylinder//Ink Pump Issues

What model/series is it?
Seem the pump is clogged, the little filter inside the pump is not letting the ink through even though the pump is being activated

Its an RZ 310 cylinder (s-4315).

The cylinder is less than a year old and has only used recent OEM ink (nothing older than 2011) - it has maybe 50,000 impressions made.

When I ran the Ink Overflow Sensor in Test Mode I recieved a oooooo (lower half of an 8) and a beeping sound. But when I ran the ink sensor in Test mode I received a l l l l l response.

Any idea what those mean?

Thanks,

PJ

[LA TECH]

Re: Dry Cylinder//Ink Pump Issues

Its an RZ 310 cylinder (s-4315).

The cylinder is less than a year old and has only used recent OEM ink (nothing older than 2011) - it has maybe 50,000 impressions made.

When I ran the Ink Overflow Sensor in Test Mode I recieved a oooooo (lower half of an 8) and a beeping sound. But when I ran the ink sensor in Test mode I received a l l l l l response.

Any idea what those mean?

Thanks,

PJ

One is activated by the ink and the other is not activated, if you don't mind to get your hands dirty, open the drum and remove the ink nozzle from the pump then you'll see or feel the filter is a metal mesh with a rubber seal. I had those clogging in an almost new drums using oem ink, I had removed just the mesh and reinstalled the rubber seal. Sometime riso put a lot of oil to get the pump started and that will cause problem with the pump and also copy quality.

[pj4nh]

Re: Dry Cylinder//Ink Pump Issues

One is activated by the ink and the other is not activated, if you don't mind to get your hands dirty, open the drum and remove the ink nozzle from the pump then you'll see or feel the filter is a metal mesh with a rubber seal. I had those clogging in an almost new drums using oem ink, I had removed just the mesh and reinstalled the rubber seal. Sometime riso put a lot of oil to get the pump started and that will cause problem with the pump and also copy quality.

Hey - so as an update - earlier this year I had a burgundy drum I converted to Red - the ink was bought not from an authorized reseller but I was assured it was "good". After I converted the image, ran up proofs and maybe 500 impressions I received an overflow error and I tried to ship the drum back to the reseller who sold me both the drum and the ink to see if he'd look at it. He couldn't check it out because he didn't have a machine to test it on - and eventually he shipped it back to me (about 3 months later).



I've "lost" three drums due to overflow sensors; bad ink, karma - who knows why it happens but it fuckin' sucks.

It most recently happened on my MZ - after I converted the red drum over to Pink (fresh from Japan) and ran three editions and two contract jobs (about 2000 impressions) - I had an overflow error.




Since both were dead - I decided to perform some surgery and see if I could clean off the sensors. But being a curious // impatient person - I popped the old red drum [its been about 6 months since it died] into the machine and ran it up - No overflow sensor went off and I converted the cylinder over to blue just to see if it would die again -- nothing changed, no error message. I ran 400 impressions yesterday and another 400 today - just to see if it'd die... hasn't yet.


I'm going to assume that this is just blind luck and much like my MZ - after a few thousand impressions the overflow sensor will go off again.


I'm wondering if anyone else has had a similar experience or has had success with print cylinder surgery.


Will my MZ drum come back to life if I let it sleep for 3//4 months?


Appreciate any tips // tales // tonics


PJ

[Iowatech]

Re: Dry Cylinder//Ink Pump Issues

I've had a few ink overflow errors, but I've never lost a drum to that. The overflow errors I've encountered that weren't due to a voltage surge were caused by a buildup of ink directly underneath the ink sensor board that reaches the overflow sensor.
Cleaning up the buildup and re-inking the drum solved the problem for me. In the beginning I replaced the sensor board a couple of times too, but I'm pretty sure that didn't help.
It appears that by disassembling the drum far enough to clean up the ink buildup I may have solved the problem that caused the ink buildup in the first place. But I'm not sure about that, so it might be better to consider that a myth until other people check in on that.