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bizhub C4000i/C3300i
(c) Stabilization start timing
Types of stabilization start timing are shown below.
Level 0*
Executed immediately.
Level 1*
Executed at any of the following timing.
Start of color printing/End of color printing/Before switching to color mode/Sorting by number of copies.
Level 2
Executed at any of the following timing.
Start of color printing/End of color printing/Before switching to color mode.
Level 3
Executed at start of color printing or before switching to color mode.
• *If there are less than 10 sheets of paper remained to be printed, stabilization will be executed after completing the job.
(d) Completing image stabilization
For the type of image stabilization which has been executed on the following modes, stabilization adjustment will be executed again after
completing the stabilization. Stabilization start timing will turn to level 3 regardless of stabilization type.
• Mode 3 (gamma correction + color registration control)
• Mode 4 (monochrome, long image stabilization)
• Mode 5 (color registration control)
• Mode 6 (monochrome, gamma correction)
• Mode 8 (monochrome, short image stabilization)
(3) Control sequence by mode
• A different control sequence applies according to the mode of image stabilization.
• Control is performed in the specified sequence for each mode.
Seque
Mode 1
nce
(initialization
and image
stabilization)/
(long image
stabilization)
1
IDC sensor
adjustment
2
Dmax density
adjustment
3
LD light
intensity
adjustment
4
Color
registration
adjustment
5
Dmax density
adjustment
6
LD light
intensity
adjustment
7
Gamma
correction
• *1: The IDC sensor uses the output value calculated in the last IDC registration sensor adjustment and check that the value measured on
the surface of the transfer belt (background level) is within the specified range. If the measured value is out of the specified range, mode
1 is used when the next image stabilization is carried out.
• *2: Unlike the color registration adjustment of mode 1, simplified color registration control is performed.
• *3: Unlike the gamma correction of mode 1, simplified gamma correction control is performed.
• *4: To be executed twice when an imaging unit or a transfer belt unit is replaced, or when the machine recovers from a toner empty
condition.
(4) Predrive operation
• The following describe the stabilization operations executed when, for example, the main power switch is turned ON, the sleep mode is
canceled, the front door is closed, or a malfunction is reset.
Mode
Image stabilization mode
Mode 1
Initialization and image stabilization
Long image stabilization
Mode 2
Mode 3
(short image
(gamma
stabilization)
correction +
color
registration
control)
IDC sensor
IDC sensor
detection *1
detection *1
Dmax density
Color
adjustment
registration
adjustment *2
Color
Gamma
registration
correction *3
adjustment *2
Gamma
-
correction *3
-
-
-
-
-
-
• A new imaging unit/Y,M,C is detected.
• A new transfer belt unit is detected
• The machine recovers from a toner empty condition.
• While a warning code is being displayed.
• In the last image stabilization, the value of IDC
sensor detection was out of the specified range.
• A change in environment is detected (a change in
environment exceeding the threshold value is
detected since the last image stabilization
sequence).
P THEORY OF OPERATION > 1. bizhub C4000i/C3300i
Mode 4
Mode 5
(monochrome,
(color
long image
registration
stabilization) *4
control)
IDC sensor
IDC sensor
adjustment
detection*1
Dmax density
Color
adjustment
registration
adjustment *2
LD light
-
intensity
adjustment
Dmax density
-
adjustment
LD light
-
intensity
adjustment
Gamma
-
correction *3
-
-
Operation condition
P-56
Mode 6
Mode 7
(monochrome,
(gamma
gamma
correction)
correction)
IDC sensor
IDC sensor
detection*1
detection*1
Gamma
Gamma
correction *3
correction *3
-
-
-
-
-
-
-
-
-
-
Image stabilization setting
Not specified
Standard or Color priority
selection
Mode 8
(monochrom
e, short
image
stabilization)
IDC sensor
detection*1
Dmax
density
adjustment
LD light
intensity
adjustment
Gamma
correction *3
-
-
-
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