Oki B6500

6 – 14
Chapter 6 Principles of Operation
GUIDE ASSY L150 and GUIDE ASSY SD R150
The GUIDE ASSY SD R150 can be adjusted to different paper sizes by moving it
to the left or right. The guides come into contact with the left and right edges of the
paper and hold it in position. The GUIDE ASSY SD L150 moves simultaneously
with the GUIDE ASSY SD R150.
LOCK EXTENSION
The 150 Paper Cassette is so constructed that it can cope with the length of the
paper in the direction of travel by moving the position of the HOUSING
EXTENSION150 forward and backward. The LOCK EXTENSION is adopted as a
mechanism for holding the HOUSING EXTENSION150 in
position.
GUIDE ASSY END150
This can be adjusted to different paper sizes by making a forward or backward
adjustment. This makes contact with the rear end of the paper, and holds it in
position in the forward and rearward directions. The paper size to which the
cassette is set is transmitted to the LINK SW SIZE 1/2/3 via the GEAR SECTOR
and RACK SIZE by the GUIDE ASSY END150. The three LINK SW SIZE units
turns ON or OFF respectively according to the transmitted paper size. The paper
size is detected by transmitting the ON/OFF information to the Size Switch in the
GUIDE TRAY LEFT. The types of paper that can be automatically detected are as
follows:
LEVER BTM LOCK and STOPPER GEAR
These are at the rear end of the cassette (i.e. the exit path of the paper). When the
cassette is inserted into the printer, the protrusions on the Feeder trigger the
mechanism that depresses the LEVER BTM LOCK, slides the RACK BTM LOCK
150, and then simultaneously unlocks the GEAR PINION and GEAR PB R of the
STOPPER GEAR.
PLATE ASSY BTM
The force pushing up the PLATE ASSY BTM is supplied via the SPRING BTM
UP150 by unlocking the LEVER BTM LOCK and STOPPER GEAR. When the
PLATE ASSY BTM is pushed up, the supplied paper and ROLL ASSY NUDGER
touch each other.
LOW INDICATOR
The LOW INDICATOR is installed only on the 550 Paper Cassette. The amount of
paper remaining in the cassette is indicated by the LOW IND FRONT. As the
amount of paper reduces, the PLATE ASSY BTM rises and the LOW IND FRONT
goes down in the GUIDE INDICATOR.
Type Size (mm × mm)
Letter SEF 215.9 × 279.4
Legal 14" SEF 215.9 × 355.6
Legal 13" SEF 215.9 × 330.2
Executive SEF 184.2 × 266.7
A4 SEF 210.0 × 297.0
B5 (JIS) SEF 182.0 × 257.0
A5 SEF 148.5 × 210.0