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Arizona Ink Vacuum System Problem

U

UGCalgary

New Member
Boejoe77 said:
If you want to eliminate the Miniscus try the same print with a different color the Miniscus is the same for all Colors + my honest opinion in this case is a dirty print head even if you have all your nozzles while you print ink accumulate on the head and simulate a ink starvation.
Click to expand...

UGCalgary​

New Member​

Jan 14, 2025
Our old but well maintained 250GT now has a strange printing issue. We had Canon replace the two yellow print heads recently and immediately had an issue where the yellow ink starts to drop out after printing about 20-25 cm of a full bed with heavy yellow coverage.
If you stop the print and do a nozzle check it is fine. Somehow the yellow printheads are getting ink starvation while printing?
We did notice that when the machine is idle the ink meniscus level on the popup ink screen fluctuates from 12.1 down to 10.7 and then back up to 12.1.
The Canon techs were in for several days trying to find a fix with no luck. Still waiting for a full service report as to what was checked/changed. More on that later.
 
U

UGCalgary

New Member
After purging all 4 colours the yellow is the only colour that has residual ink on heads.
 

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White Haus

White Haus

Not a Newbie
UGCalgary said:
After purging all 4 colours the yellow is the only colour that has residual ink on heads.
Click to expand...
We literally JUST went through this with our 318gl last week. Tech replaced the degas filter for yellow head (How they can charge $2500 for a piece of plastic is beyond me) and replaced all secondary ink filters (or whatever those clear disc filters are above heads) and it took care of the issue.

Our meniscus vacuum level was doing the exact same thing, bouncing back and forth.
 
U

UGCalgary

New Member
White Haus said:
We literally JUST went through this with our 318gl last week. Tech replaced the degas filter for yellow head (How they can charge $2500 for a piece of plastic is beyond me) and replaced all secondary ink filters (or whatever those clear disc filters are above heads) and it took care of the issue.

Our meniscus vacuum level was doing the exact same thing, bouncing back and forth
Click to expand...

Did the print start out fine then yellow start dropping out after approx. 24" of a full bed?
 
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