VP 540i special banding

[romichoux]

Hello guys,

I'm french and I need some help about banding. I don't know if it's the correct word

I have banding on a VP 540i.

This kind of banding looks like a lighter band and this phenomenous is completely hazardous. sometimes that's happening just after several inch (about 10). see the attached scheme

This what I have checked:
- feed motor calibration (service menu)
- pinchroll pressure
- take up motor tension.
- encoder strip and calibration (service menu)
- capping and pump. I swapped the 2 pumps
- swap head cables
- swap printheads and print 100% of each colors
- create a new profile ICC

I will check dampers also but their don't look like damage.

do you have an idea? do you know this problem?

thanks in advance!

Romain

http://www.imagup.com/data/1154107109.html

 

[ChicagoGraphics]

Post a picture

 

[CanuckSigns]

Bonjour!

we have this issue sometimes on our machine, is the printer is a controlled environment (humidity, temperature)?

if you are in a bind and need to get a job out the door, I have run in uni-directional high quality before and it goes away, but it's painfully slow!

 

[romichoux]

this is not clear on the picture. that's why i have post a scheme, but in reality we can see it easily.

http://www.imagup.com/data/1154109344.html

 

[J Hill Designs]

chromatic banding perhaps?

http://www.signs101.com/forums/showthread.php?t=91736

 

[romichoux]

Bonjour ;O)

Thanks for your help and your advices...!!!!!!!!!!

I will try to find a solution with that

Romain