Xerox DocuColor 12/DCCS50

1/05
10-105
DocuColor 12/DCCS50
Tray 5
Principles of Operation
Reissue
As the paper advances through Tray 5 Take Away Rolls, the lead edge of the paper passes a
reflective sensor. The signal from this sensor is compared to the TR0 signal from the IBT by the
machine run control. The machine run control signals Tray 5 Motor to run the Take Away Rolls
faster or slower so that the paper will synchronize with the IBT for proper image transfer.
The same alignment procedure occurs when the p
aper com
es from the Vertical Transport and
Paper Tray direction. In this case, a Preregistration Sensor signals the machine run control
which has the Tray 5 Motor vary the speed of the Preregistration Rolls. Refer to Figure 1 for
Tray 5 Motor speed adjustments of these rollers. From either Tray 5 Take Away Rolls or the
Preregistration Rolls, the copy is advanced to the Registration Rolls for “deskewing”. (See
Paper Registration and Paper Transport to the IBT Belt.)
Figure 1 Motor Speed Adjustments for Paper and Image Alignment
Tray 5 Mechanical Drives
Tray 5 uses two motors:
• Tray 5 Motor drives
Tray 5 Nudger roll, Tray 5 Feed Roll, Tray 5 Take Away Rolls, Pre-
Registration Rolls and Take Away Rolls #1.
• Tray 5 Lifter Motor raises or lowers the Paper Lifter to control the paper level for correct
feed height
in Tray 5.
- Clockwise raises the Paper Lifter
- Counter clockwise lowers the Paper Lifter
Figure 2 Tray 5 components
Tray 5 Copy Size Sensing
When paper is placed in Tray 5, a paper Size Guide is manually adjusted to accommodate the
lead edge dimension of the copy. The Size Guide uses a variable resistor sensor (0-5 VDC) for
providing the lead edge dimension to the machine run control. The length of the paper (run
dimension) is determined by the activation time of the Pre Fuser Sensor.
Figure 3 Tray 5 Drive and Size Sensor
SIZE
GUIDE
PAPER TRAY
LIFT
FEED OUT
SENSOR
NUDGER ROLL
SOLENOID
RETARD ROLL
FEED ROLL
PAPER OUT
SENSOR
PAPER LEVEL SENSOR
Tray 5 Motor
Nudger Roll
Tray 5 Take Away Roll
Paper Size Sensor