Drop some knowledge on me.

[tintwizz]

This is my head adjustment after the 3rd time and I am still getting banding. I have also went from one end of the spectrum to the other on my feed calibration with minimal change. I replaced K and M heads and dampners went through all tests and calibrations what am I missing?

 

[kffernandez]

how's your bi-directional calibration? test print would also help.
btw, your feed calibration needs to be at the exact right spot. going over and going under could produce the banding you're experiencing.

kelly

 

[tintwizz]

I went back through bi-directional and reset it is good. Im at my wits end with this thing.

 

[AaronSSsignsKC]

what machine are you on, and how old is it. Banding can be caused by a lot of things. You started in the right spots if all of youre calibrations are good it could be you're page feed motor going out. most solvent machines have a mechanical motor that drives the page feed system and if they start to go out they can lose teeth and bit and you can experience a slip in the page feed that can cause a hell of a band.

Good luck

 

[Ragnabrok]

yellow vertical alignment is way off. you cant see it in the vertical test print, but on the bias print you can see the yellow isn't level with the other colours. sometimes it's just that one nozzle that doesn't fire for the test prints, making them a bit more tedious to align.

 

[tintwizz]

Roland vp540I probably about 7 years old.when I look through a magnify glass at the pattern the yellow looks perfect at the bottom but looks like it's missing a line at top. Here is a calibration test and can't figure how I get an overlap in both directions of the scale

 

[Ragnabrok]

overlap on both sides, thats a new one. feed related? pinch roller arms cracked?

if you can't align yellow with the vertical test print, use the bias to at least get it close.

 

[tintwizz]

All my test prints look good. So I started printing this and noticed I have blue on on side and yellow on the other on the edge of print.

 

[ProPDF]

change the encoder strip and the sensor that reads it on the carriage board. Also pull head carriage to the left in maintenance mode and then take a plastic cleaning swab up against the back of the heads and see if there is a gap. Don't use a metal ruler. I had the overlapping too heads were out of alignment plus encoder was dirty. Parts are cheap on signinchina

 

[tintwizz]

New encoder strip already done. if heads were out would'nt it show on alignment print