COPYRIGHT © 1999 CANON INC. CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
6-47
CHAPTER 6 IMAGE FORMATION SYSTEM
f.
Flow of Control Using the Color Toner Concentration Sensor during Copying
Operation and Its Related Code
(The notation “xx” of detail code indicates the color of developing assembly; e.g., xx=01: M,
xx=02: Y, xx=03: Y)
Figure 6-413
Initial setting
1.
Starting
copying
operation
2.
Checking
the connector
(disconnection)
3.
Measuring the
concentration
3.1 Reading
REF- M/C/Y
3.2 Making a
comparison
and
computation
3.3 Reading
SGNL-M/C/Y
3.4 Making a
comparison
and
computation
Flow of
operation
(Copy Start key
ON)
Measures the
concentration of
developer.
LED on; uses
PS1 to check
light; converts
intensity into
voltage.
Compares the
initial setting
REF-M/C/Y and
REF-M/C/Y read
in 3.1.
LED on; uses
PS2 to check
light; converts
light into voltage.
Compares the
initial setting
SGNL-M/C/Y
and SGNL-M/C/
Y read in 3.3.
Detail code
xx00
xx91
xxA1
xxB1
xx61
xx71
xx90
xxA0
xxB0
xx60
xx70
xxC0
xxD0
xxE0
Items of detection
The PS1/PS2 connector is disconnected.
The level of variation in one sample is 102
or higher.
The result is 30% or more lower than the
initial setting REF-M/C/Y.
The result is 30% or more higher than the
initial setting REF-M/C/Y.
The initial setting is 200 or lower.
The initial setting is 930 or higher.
The level of variation in one sample is 102
or higher.
The reading is 306 or lower.
The reading is 1020 or higher and
continues to be so 10 times or more.
The reading is 777 or lower.
The reading is 859 or higher.
The result is +3.00% or higher 20 times or
more continuously as compared with the
initial setting SGNL-M/C/Y.
The result is -3.00% or lower 20 times or
more continuously as compared with the
initial setting SGNL-M/C/Y.
The result is -5% or higher than the initial
setting SGN-M/C/Y.
Developing cylinder
Photosensor (PS1)
Photosensor (PS2)
Color toner
concentration sensor
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