Specifications

Principles of Operation Mechanical Drive - 17
Mechanical Drive
The generation and transmission of mechanical drive in the LaserWriter 12/640 PS is
shown in the diagram below.
Pickup Motor
Main Motor
Gear cluster in the
pickup drive assembly
transmits the drive
force to the rollers
shown to the right.
Cassette
Pickup Roller
Photosensitive
Drum
Registration
Feed Roller
Transfer Roller
Drive Transfer
Assembly
Fuser Roller
Delivery Rollers
Cassette
Feed Roller
Preregistration
Feed Roller
Manual Feed
Pickup Roller
Gear cluster in the
main drive assembly
transmits the drive
force to the rollers
shown to the right.