Black vertical lines on paper (HP LaserJet Pro M102a)

Sep 26, 2020
I bought a refurbished HP LaserJet Pro M102a a couple of years ago and it ran fine for around 2 years where I printed more than 1200 pages.

Then after the ink ran out I got it refilled from a shop but after that black vertical lines started appearing on paper. I cleaned drum roller with cloth 4, 5 times and after around 30, 40 pages the problem went away and I went on to print 900 pages.

After that ink again went out and now after refill it is again printing black lines and problem is not going away even after cleaning 10 times and printing 100+ pages.

What is the reason that every time I refill this problem starts appearing and how can I fix it?

Screenshots given below

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