Dark Spots On Prints??

Hey,

I'm having this issue with my 150.



I know I dealt with this before on my 4 or atleast something similar but cannot for the life of me remember.

It happens on every single color. The same effect, but not in the same spot, but basically darker spots of whatever color is being printed.

Now here is the kicker, it only shows up on side 1, never on the 2nd side of a duplex piece. I changed the cleaning blade (the white stuff was kind of worn off, thought it might of been a reason), fuser looks fine, belt looks fine.

So the single sided is what really throws me.

Our humidifier was down for 2 days and our level was 12% for a day, so I thought maybe that was why because I tried it this morning and it appeared fine now that the humidity is back up but no dice. It worked for like 20 prints and then boom.

Also it only happens on thicker stocks, particularly 100# Cover. On Text weight you don't see any issues at all.

I got a service call in, but this is an extremely time critical job, so if anyone has any sort of an answer for me that'd be huge.

Appreciate the time.

 

Are those lines in the process direction spaced apart about the same width as the teeth on your tab blade?

 

The paper is going the other way. The lines go side to side. IB = Inboard TE = Trail Edge to show the direction.

I had thought that as well, but my TAB blade does look a little off in around that area, but some of those lines are wider than others and such so I am stuck.

 

Tech just showed up, thinks it might be something to do with the Ozone. Possibly a bad filter issue caused by the humidity being so low for a few days.

 

So it wasn't the ozone or anything.

It actually was likely a mix of a few things, one being the TAB. We replaced the tab, slightly altered the transfer settings (which I don't think really helped) and jacked up the humidity to get it back to normal range. Boom gone.

We exhausted every other idea and said **** it just try the TAB and it worked.

It likely happened from when our humidifier was down for a few days and our levels went from 35%+ to 10% for 3 days than back to 35%+ in a matter of 15 minutes.

Hopefully this might help anyone in the future.

 

"We exhausted every other idea and said **** it just try the TAB and it worked"

haha this kinda just made my day... love it (hate) when that happens.....