HP2-B110 · Question #30
Which feature is included in a Laser printing system?
The correct answer is A. Charging roller. A charging roller is a core component of the laser printing process - it uniformly applies a negative electrostatic charge to the photosensitive drum before the laser selectively discharges areas to form the image. This electrostatic mechanism is what fundamentally…
Question
Which feature is included in a Laser printing system?
Options
- ACharging roller
- BTri-color cartridge
- CAdaptive lighting
- DPrint head
How the community answered
(32 responses)- A94% (30)
- B3% (1)
- D3% (1)
Explanation
A charging roller is a core component of the laser printing process - it uniformly applies a negative electrostatic charge to the photosensitive drum before the laser selectively discharges areas to form the image. This electrostatic mechanism is what fundamentally distinguishes laser printers from other types.
Why the distractors are wrong:
- B. Tri-color cartridge - found in inkjet printers, which use liquid ink rather than toner and a drum.
- C. Adaptive lighting - not a real printer component; this is a fabricated distractor.
- D. Print head - also an inkjet printer component; it physically moves across the page depositing ink droplets.
Memory tip: Think of laser printing as the DUCT process - Discharge (laser), Uniform charge (charging roller), Clean (cleaning blade), Transfer (toner to paper). The charging roller is step one, so it's impossible to have a laser printer without it.
Topics
Community Discussion
No community discussion yet for this question.