6 – 14Chapter 6 Principles of OperationVersion 1 2007.12.283. Functions of Major Functional ComponentsMajor 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• MPF & Regi Assy• Transfer Belt & Fuser• PRINTHEAD• TONER CARTRIDGE• Drive• Electrical• Duplex• 550 Paper Feeder3.1 Paper Cassette3.1.1 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 thepaper width.- End GuideThe Guide End Assy can move in the paper transfer direction to determine the paper size. The ON/OFF of SIZE SWITCH ASSEMBLY (Refer to 5.1 Control of Paper Size) varies according to theGuide End Assy position to detect the paper size.- FEED ROLLER (SEPARATOR)The FEED ROLLER (SEPARATOR) and the FEED ROLLER pinch the paper to prevent multiplesheet feed.- Bottom PlateBottom plate is locked to the bottom side when paper cassette is pulled out from the paper feederand unlocked when paper cassette is installed to the paper feeder. Pushes the paper against thefeed roll using a spring tension.
