Paper Amount Detection - Ricoh B051 Service Manual

PAPER AMOUNT DETECTION

2.7 PAPER AMOUNT DETECTION
The table lists the sensors that are used to detect
the amount of remaining paper.
Paper feed side
Paper storage side
The table shows the change of sensor patterns
after the storage side and the feed side are fully
loaded.
Storage Feed
S F
side side
PE1
#
H1 $
H4 H2
# $
H5 H3
# $
PE2
#
      
Indication
The
base
Remarks plate is
at the
bottom.
PE1∼2: Paper end sensor 1∼2, H1∼5: Paper height sensor 1∼5, # : Actuated, $ :Not actuated
The table shows the change of sensor patterns after the storage side is half loaded
and the feed side is fully loaded.
Storage Feed
S F
side side
PE1
#
H1
$
H4 H2
$ $
H5 H3 # $
PE2
#
  
Indication
The
base
Remarks plate is
at the
bottom.
PE1∼2: Paper end sensor 1∼2, H1∼5: Paper height sensor 1∼5, # : Actuated, $ :Not actuated
B457
CÓPIA NÃO CONTROLADA
• Paper end sensor 1
• Paper height sensors 1 to 3
• Paper height sensors 4 and 5
• Paper end sensor 2
S F S F S
# #
$ $
# $ # # #
# # # $ #
# # #
As the paper in the feed
side is used, the base plate
is lifted.
S F S F S
# #
$ $
$ $ $ # $
# # # $ #
# # #
As the paper in the feed
side is used, the base plate
is lifted.
CÓPIA NÃO CONTROLADA
Paper Storage Side
Paper Height
Sensor 5
Paper Height
Sensor 4
Paper End
Sensor 2
F S F S F S
# $ #
# $ $
$ # $ $ $ $
$ # $ $ $ $
# $ $
When the paper
in the feed side is
all used, the base
plate returns to As the paper in the feed
the bottom. The side is used, the base plate
paper in the
storage side is
carried to the feed
side.
F S F S
# $
# $
$ $ $ $
$ # $ $
# $
  
When the paper in the feed
side is all used, the base
plate returns to the bottom.
The paper in the storage
side is carried to the feed
side. The bottom plate is
lifted until paper end
sensor 1 detects the paper.
14
Paper Feed Side
Paper Height
Sensor 1
Paper Height
Sensor 2
Paper Height
Sensor 3
B457D112.WMF
F S F S F
# # #
$ $ #
$ $ # $ $ $
# $ $ $ $ $
$ $ $
The LCT
is lifted. empty.
F S F S F
# # #
$ $ #
$
$ $ # $ $
$
# $ $ $ $
$
$ $
As the paper in
The LCT
the feed side is
used, the base
empty.
plate is lifted.
Paper End
Sensor 1
S F
$
$
$
$
is
S F
$
$
$
$
is
SM