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Difficulty: EasyPrinter Technologies and Consumables Maintenance

A technician is performing preventive maintenance on a departmental laser printer. Which component of the electrophotographic (EP) print process is responsible for conditioning the photosensitive drum by applying a high uniform negative voltage before the image is written?

  1. Primary Charge Roller (PCR)Answer
  2. B
    Fuser assembly
  3. C
    Transfer roller
  4. D
    Developing roller

Answer

The Primary Charge Roller (PCR) is responsible for applying a uniform high negative electric charge across the surface of the photosensitive drum during the charging stage of the electrophotographic printing process.
The Primary Charge Roller (PCR) prepares the photosensitive drum during the charging step by applying a uniform high negative electrical charge to the drum's surface prior to laser exposure.

Step-by-Step Solution

1
Identify the initial conditioning phase of the electrophotographic (EP) laser printing cycle.
The initial cycle phases proceed as Cleaning → Processing → Charging → Exposing → Developing → Transferring → Fusing.
The drum must be uniformly charged before the laser can write a latent image.
2
Determine which component performs the initial drum charging.
The Primary Charge Roller (PCR) applies a uniform high negative voltage (typically around -600V DC) across the drum surface.
This establishes a baseline charge so the laser scanner can selectively discharge areas to form the latent image.

Key Concept

EP Printing Process - Charging Stage
Estimated Time:45s
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Topics

Printer Technologies and Consumables Maintenance

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