Specifications

Chapter 2: PrinterTechnical Description
2-5
Paper Feed
1 Paper Cassette Holds assorted sizes of standard sheet paper. You adjust the
cassette paper guide to accommodate different sizes. The
adjustment changes the position of the Size Spring that actuates the
Paper Size Switches. The Paper Cassette Assembly has a Pinch
Roll that operates in unison with the Turn Roll in the Turn Roll
Assembly.
2 Feeder PWB Contains the Paper Size Switch (2a) and the No–Paper Sensor (2b).
The Paper Size Switch is actuated by the Size Spring (2c).The
switch detects if the Paper Cassette is loaded into the printer and
that the correct size of paper is loaded into the Cassette. The No–
Paper Sensor monitors the level of paper in the cassette. The switch
is ON when the cassette is empty.
3 Feed Solenoid Controls the start and stop of the Feed Roll Assembly.
4 Turn Solenoid Controls the start and stop of the Turn Roll Assembly. The solenoid
is actuated when the when the printer controller sends a /PRFD
(prefeed) signal.
5 Feed Roll Assembly Consists of the Feed Roll and the Feed Clutch Assembly. The Feed
Roll feeds paper from the Cassette. Feed begins when the Feed
Solenoid unlatches the Spring Clutch in the Feed Clutch Assembly,
starting the rotation of the transmission gears in the Drive Assembly.
After one revolution of the Feed Roll, the Feed Solenoid latches the
Spring Clutch, which stops the rotation of the transmission gears
and the Feed Roll.
6 Turn Roll Assembly Pauses paper movement when the Turn Solenoid receives a /PRFD
signal from the printer and just before a sheet reaches the
Registration Sensor. Paper movement resumes when the printer
controller sends a /START signal to the Turn Solenoid. The Turn
Roll Assembly keeps moving paper if the printer controller does not
send a /PRFD signal.