220-1101 · Question #98
Vertical streaks are appearing on the output of a laser printer. Which of the following items is the MOST likely cause?
The correct answer is B. Drum. The drum (photosensitive drum or OPC drum) in a laser printer is a cylindrical component that rotates to transfer the image to the paper for its full length. A scratch, gouge, or toner contamination on the drum creates a consistent defect that appears as a vertical streak running
Question
Vertical streaks are appearing on the output of a laser printer. Which of the following items is the MOST likely cause?
Options
- ARoller
- BDrum
- CTransfer belt
- DRibbon
How the community answered
(28 responses)- A4% (1)
- B93% (26)
- D4% (1)
Explanation
The drum (photosensitive drum or OPC drum) in a laser printer is a cylindrical component that rotates to transfer the image to the paper for its full length. A scratch, gouge, or toner contamination on the drum creates a consistent defect that appears as a vertical streak running the full height of the page on every printout. This is the classic symptom of a damaged or dirty drum. A roller (A) failure typically causes smearing or feeding issues, not clean vertical lines. The transfer belt (C) is more associated with color registration or horizontal defects. A ribbon (D) is a component of dot matrix or thermal transfer printers, not laser printers.
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