Canon imageRUNNER ADVANCE C5255, Руководство по обслуживанию, Страница: 107 / 1443

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Technology > Image Formation System > Controls > Image stabilization control
Technology > Image Formation System > Controls > Image stabilization control
Correction value calculation flow for ARCDAT control
Output of density data (INT)
Patch sensor(center)(UN49)
Main controller2
DC controller(UN1)
Reference patch pattern for
ARCDAT is created(3Patch)
Patch scanning
Start
Saved as reference
data for ARCDAT
Data output(D-CON)
Density data(D-CON)
100
40
100
20
40
10
INT
DC controller(UN1)
example)
Reference data for
ARCDAT of copy pattern
F-2-100
● ARCDAT control
This control obtains ideal gradation characteristics while reducing down time
Execution timing
1) When replacing a drum unit or developing assembly
2) At post-rotation every time the total reaches 25 prints (when continuously making prints,
printing is interrupted for every 100 prints to execute this control)
Control details
1) DC Controller creates the patch pattern of each color (Y, M, C, Bk) on the ITB.
(3 patterns per each color, total 12 patterns)
2) DC Controller measures the patch pattern with the Patch Sensor (center) (UN49) and
returns the result to the Main Controller 2.
3) The Main Controller 2 compares the actual measured data with the backed up standard
data for ARCDAT control. Difference after comparison is reflected to D-half result as offset
value.