Pink banding on Roland SP-540i

[Colin]

Whenever I print a solid color background, I get these pinkish bands about every 17". Printing at Standard Quality in RVW. I've even tried converting the colored area to a bitmap (in CorelDraw), but that doesn't fix it. All test-prints are good.

Any solutions?

 

[LFC911]

When you rotate the image does the band rotate with it or stay the same direction on the media?

 

[Colin]

No, it's always in the path of the print head. I'm fairly confident now that it's a static issue, and I have ordered an anti-static flex cord which I will receive next week.

 

[LFC911]

Does it go away when you wipe it with Alcohol before you print?

 

[Johnny Best]

So you concurred it was not ink starvation caused by faulty dampers or bad material.
Report back how the anti-static flex cord works for you because I have that same issue when running dark grays. I solved my problem by running different material.

 

[Colin]

I wasn't getting any replies here in the Roland section, so I started the same thread in the Digital Printing section, where it has been covered more extensively:

Banding problem

 

[Solventinkjet]

The encoder in the feed motor could be malfunctioning. Especially if it is happening at a regular interval. Sometimes you can tell if it is bad by just scrolling the media forward and listening to it carefully. If it makes a thumping noise and the media seems to skip every once in a while, it's most likely a bad PF encoder.