Xerox Phaser 6280 Service Manual

Phaser 6280 Color Laser Printer Service Manual 2-25
Theory of Operation
Tray 1 Multiple Sheet Feed Prevention
The sheets loaded in Tray 1 (MPT) are occasionally stuck together at the
edges, which can cause a multiple sheet feed or a jam. Normally, when only
one sheet is fed, both the Feed Roller and Retard Roller rotate to allow the
sheet to pass.
However, when two sheets are fed concurrently, only the Feed Roller rotates.
The Retard Roller is coupled to a friction clutch that prevents the roller from
rotating due to the extra force from feeding two sheets; this process allows the
upper sheet to pass by as the lower sheet is stopped by the friction with the
Retard Roller at rest.
The Retard Roller is pushed toward the Feed Roller by spring pressure, and
controlled by the Torque Limiter (Friction Clutch Retard) with which it is
coupled.
Single Feed
s6280-071
Tray 1 (MPT) Feed Roller
Retard Roller
Retard Roller
Torque Limiter
Multiple Feed
s6280-072
Tray 1 (MPT) Feed Roller
Retard Roller
Retard Roller
Torque Limiter

Xerox Phaser 6280 Specifications

General

Brand	Xerox
Model	Phaser 6280
Category	Printer
Language	English