3. Functions of Major Functional Components
Major functional components of the printer are described below with illustrations.
These components are classified into the following blocks based on the configuration of the printer.
• Paper Cassette
• Paper Feeder
• SSI & Regi Assy
• Transfer Belt & Fuser
• ROS ASSY
• TONER CARTRIDGE & Dispenser
• PHD Unit
• 250 Paper Feeder
3.1 Paper Cassette
3.1.1 Major functions
Guide Side (R/L)
The Guide Side Assy (R/L) can move at a right angle to the paper transfer direction to align the
The Guide End Assy can move in the paper transfer direction to determine the paper size.
The SEPARATOR ROLLER and the FEED ROLLER pinch the paper to prevent multiple sheet feed.
Bottom plate is locked to the bottom side when paper cassette is pulled out from the paper feeder
and unlocked when paper cassette is installed to the paper feeder. Pushes the paper against the
feed roll using a spring tension.
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Chapter 6 Principles of Operation