Comptia A+ 801/802 - Laser Printer

Front 1

Contains fine powder to create images

Back 1

Toner Cartridge

Front 2

Contains the laser

Back 2

Laser Scanning Assembly

Front 3

Converts current into optimal voltage for components and converts AC to DC for internal parts of the printer

Back 3

High-Voltage Power Supply

Front 4

Includes the transfer belt & separator pads to move the paper through the printer

Back 4

Paper Transport Mechanism

Front 5

Carries an electrical charge that attracts toner, then transfer toner to the paper.

Back 5

EP Drum (Electrostatic Photographic Drum)

Front 6

Charges the paper and the EP drum so that toner is pulled off.

Back 6

Transfer Corona Assembly

Front 7

Applies pressure & heat to the paper to fuse the toner particles to the paper

Back 7

Fuser Assembly

Front 8

Processes all of the data received from the computer and coordinates the steps needed to produce the finished page

Back 8

Formatter Board

Front 9

Step 1 - EP drum is cleaned with a rubber squeegee blade

Back 9

Cleaning

Front 10

Step 2 - Removes charge from the EP drum in prep for the next image

Back 10

Erasing

Front 11

Step 3 - Charged with a charge roller. The roller is connected to a HV-PSU to produce negative charges

Back 11

Charging (Conditioning)

Front 12

Step 4 - A laser writes to the EP drum, giving portions of the drum a weaker negative charge

Back 12

Writing

Front 13

Step 5 - Toner is attracted to the areas of the drum where the laser hit. The image is ready to be developed. A wipe blade spreads the toner evenly on the surface of the drum leaving only the regions written by the laser

Back 13

Developing

Front 14

Step 6 - Positively charged papers are fed into the printer by pickup rollers. The paper attracts toner sticking on the drum. The toner transferred sticks on the paper

Back 14

Transferring

Front 15

Step 7 - The toner is melted & fused with the paper permanently

Back 15

Fusing