Sharp AR-RB1, Service Manual

Page: 10 / 36

AR-RB1 DESCRIPTION OF OPERATION 4 - 3
(3) Reverse tray delivery operation
A. When paper length is 249mm or less (letter size or less)
(Both the paper input motor and upper turnover motor operate)
The relation between the process speed and the transport speed in
RB1 is as follow.
Unit: mm/s
Sensor input, motor output, solenoid output timing is as below.
Processing speed
The paper input motor and
upper turnover motor are
caused to turn in time with the
copier processing speed, thus
transporting the paper. When the trailing edge of the paper
reaches a point 13mm from the copier
POD off, the transport speed in RB1
is accelerated.
Trailing edge of paper reaches
point 13mm from POD off
Transport speed
(high speed)
Transport speed
(high speed)
Transport
speed
(low speed)
When the trailing edge of
the paper reaches the upper
reverse stop point, the
motor stops.
Motor stop
(paper stop)
Motor stop
(discharge complete)
The upper turnover motor is
caused to revolve in the paper
delivery direction, and the paper
is discharged. When the trailing edge of the paper
reaches a point 50mm before the
delivery roller, the transport speed
decreases.
Trailing edge of paper
reaches point 50mm
before delivery roller
After the trailing edge of the paper
passes the delivery roller, the
upper turnover motor stops.
Paper kind
Copier
process
speed
RB1 transport
speed
(high speed)
Paper size
RB1 transport
speed
(low speed)
Normal paper 117/140 550 A3/A3W
/EXTRA
450
A4R 430
A4/B5/B5R 400
B4/A5 320
Thick paper 1 58.5 195 All size 195
POD
(Paper exit sensor)
BPPD1
(Transport sensor 1)
BPOD
(Paper-out sensor)
BIM
(Paper-in motor)
BRM
(Upper reverse motor)
BGSOL
(Gate solenoid)
(Direction of paper-out)
(Direction of paper-in)
Process speed
High speed
High speed
Low speed