Examkin

Question

Difficulty: MediumPrinter Technologies and Consumables Maintenance

A field technician is auditing print subsystem behavior on a commercial electrophotographic (EP) laser printer to identify where image corruption occurs during document creation. Place the following EP laser printing steps in the correct chronological order from the initial job receipt to the final paper output.

  1. 1The raster image processor converts the incoming page description language data into a bitmap image stored in memory.
  2. 2The primary charge roller applies a uniform negative static charge (-600V) to the photosensitive drum surface.
  3. 3A laser beam writes to the photosensitive drum, discharging selective areas to create a latent electrostatic image.
  4. 4Toner particles are transferred from the developer roller to the exposed, lower-voltage areas on the photosensitive drum.
  5. 5A strong positive charge applied to the back of the paper pulls the toner from the drum onto the sheet.
  6. 6Heated pressure rollers melt the toner particles into the paper fibers to permanently set the print image.

Answer

The correct chronological sequence for the electrophotographic (EP) printing process is: 1) Processing (rasterizing data in memory), 2) Charging (conditioning the drum with negative charge), 3) Exposing (writing the latent image via laser), 4) Developing (applying toner to exposed drum areas), 5) Transferring (attracting toner to paper using positive charge), and 6) Fusing (melting toner onto paper with heat and pressure).
The standard CompTIA electrophotographic (EP) printing process follows seven primary steps: Processing, Charging, Exposing, Developing, Transferring, Fusing, and Cleaning. Processing translates the document into a bitmap image in memory. Charging applies a high negative charge across the photosensitive drum. Exposing uses a laser to lower the voltage on specific areas of the drum, creating a latent electrostatic image. Developing transfers toner onto those exposed areas. Transferring uses positive charge on the back of the paper to pull toner off the drum onto the paper. Finally, Fusing uses heat and pressure rollers to permanently fuse toner into the paper fibers.

Step-by-Step Solution

1
Identify the data rendering phase.
Processing is identified as the initial step where print commands are rasterized into a bitmap in memory.
The printer must build the page image in memory before physical drum manipulation can begin.
2
Identify the drum preparation phase.
Charging is placed second.
The primary charge roller conditions the photosensitive drum surface with a uniform negative charge.
3
Identify the optical writing phase.
Exposing is placed third.
The laser beam scans the drum to neutralize specific areas, leaving a latent electrostatic image.
4
Identify the toner application phase.
Developing is placed fourth.
Negatively charged toner moves from the developer roller to the higher potential (discharged) areas on the drum.
5
Identify the paper contact and image transfer phase.
Transferring is placed fifth.
The transfer roller charges the paper positively to pull toner particles off the drum onto the paper.
6
Identify the final bonding phase.
Fusing is placed sixth.
Heat and pressure melt and press the toner permanently into the paper fibers.

Key Concept

Electrophotographic (EP) Laser Printing Process Sequence
Rate this question

Topics

Printer Technologies and Consumables Maintenance

More questions from this topic