Does anyone experience about 80% of all right nozzles of a head missing. (in my case is the magenta) And, will be cleared up in a normal clean. Then again after around 2 feet of printing back to square 1 with misfiring nozzles! - just the right side.
try upping the right sie voltage by 1 volt and see what happens. also how does the cap look. when the cap drops and the head comes out can you see a small ring-mark that the cap leaves. this should be all the way around the nozzles. i'm saying this because the only other thing i can think that may be casuing this apart from the head is that it's not capping correctly.
Thanks for you tips. Around the caps as usual just some ink round each cap.
It was a hard day today my tech. came and tried his best to sort it out. Head cables of magenta where switched with another and problem remains so tech was convinced its from the head.
So, the head was removed and flushed and cleaned well with wiping fluid. Aligned in position, but again with missing right half after some time of printing just magenta colour.
So I ask do I need another head or is it an electronic thing? ----but will check if its an air leak. -thanks cs6060 .
there's a real easy way to check this, and i'm surprised your tech didn't try this. you know you head is showing a dodgy half. simply swap a known good head and test. if it's the head then you should have a full nozzle check, and if it's electrical then this known head will also fail.
tube washer to head is ok. ink in flowing into head and no air bubbles. After a cap fill and a couple of cleans can print up to around 5-10ft - depending in how much magenta is high in density. But then...again..magenta head goes half empty!
Could it be something wrong with the pumping ink! -not pumping quantity needed?
swap the heads first. this will eliminate either the head or the line. i still suspect that it's a filling issue. check the connectors along the ink line and also the damper itself. these can sometimes get small pin pricks or the seal become weak and air gets in. also do the cap alignment check. it may be that the cap is not positioning itself correctly under the heads and therefore not creating the sufficient pressure. this is an oputside bet as you say that when you perform a clean everything is ok for a bit. this would suggest that everything from the capping assembly down is ok.
sometimes the cleaning has not enough efort behind it to cure the fault, only to mask it for a period of time. if all else fails you could try an initial ink charge to ensure the head is properly refilled. it's an expensive way of doing it but it may solve your fault.
mario, if you're performing a right ink charge then it will be approx 200ml x 3 = 600ml. if you can get the jig that allows you to charge a single head as per the 100s then your loss will be less. if you're getting a seiko rep to do it, then he may already have the jig and find a way of doing it via the actuators and pumps.
Regarding my problem of reduced nozzles of magenta, my tech swapped the head with the light cyan and problem still was there in the replaced head now! so we thought it was from the ink tube but all seemed ok and tried to lowered the head voltage of the magenta and the problem was reduced, but still having some bands in the magenta.
I was wondering: if 2 heads are swapped does the head voltages have to be swapped too?
marioagius wrote: Hi to all! I'm back Regarding my problem of reduced nozzles of magenta, my tech swapped the head with the light cyan and problem still was there in the replaced head now! so we thought it was from the ink tube but all seemed ok and tried to lowered the head voltage of the magenta and the problem was reduced, but still having some bands in the magenta. I was wondering: if 2 heads are swapped does the head voltages have to be swapped too?
swamp ink tubes of cyan and magenta!
or swamp head cables from one head to another..
by swamping heads you cleared that promlem is not in heads, by swamping ink tubes you'll clear ink system problem or by swamping cables you'll clear electornical error...
but if problem is in cable by moving it you could clear problem for a while cause of new position of wires....
exactly, but this is something that your rep should have performed. it's all a process of elimination, as this is the only way you can solve problems like this.
To whom it may interest it was probably a head voltage thing. After attempts to increase or decrease the voltages of the mangenta head when swapped with the light cyan its now printing ok.
hmm don't be so sure. can't the the wrong voltages stopping one side of the head printing altogether. it might be that the head and ink has recovered enough to seem like all is well. this is the problem this printer can give you. the endless circling of it works...it fails...it works blah blah blah.
how much did you alter the voltages? have you performed any charges or strong cleans recently?have you cleaned any of the caps or cap gromits? have you done anything out of the ordinary?
questions that need to be answered to ensure it doesn't fall over again mid print run.
