When copy only 2sided the only the second page has about 20 thin vertical lines on left side of page

[robinab]

When I 2 side copy on HP 428, the back page has about 20 vertical narrow strips or lines down the left side. The front side is good. It does not make the vertical lines. I can print 2 sided fine, I can scan to email 2 sided fine. The lines only appear when I use the copy function.

[robinab · Accepted solution]

I found the answer myself.  Restart the printer. Feeling stupid I did not do that to begin with.