Canon imageRUNNER ADVANCE C5255, Руководство по обслуживанию, Страница: 105 / 1443

2
2
2-67
2-67
Technology > Image Formation System > Controls > Image stabilization control
Technology > Image Formation System > Controls > Image stabilization control
Start
Patch pattern is created
Patch scanning
Patch sensor(Center)(UN49)
PASCAL correction table is
created(Y,M,C,Bk)
Actual gradation
characteristics
Ideal gradation
characteristics
0
100
Density data
（
D-CON
）
Y1
Y2
Data output
（
M-CON
）
Y63Y64
Output of patch pattern data
Main controller2
DC controller(UN1)
Main controller2
Output of density data
100
Actual gradation
characteristics
Ideal gradation
characteristics
0 100
Density data
（
D-CON
）
Data output
（
M-CON
）
100
DC controller(UN1)
Patch patterns (4 types)
are printed on paper
Printed test patterns
are scanned by the reader
(Y)PASCAL correction table
F-2-97
● D-half control
This control determines optimal image gradation
Execution timing
1) At replacement of the Drum Unit and Developing Assembly
2) At last rotation on a specified print basis
3) At power-on (H/H environment)
Control details
1) The Main Controller 2 outputs the patch data of each color (Y, M, C, Bk) to the DC
Controller.
2) DC Controller creates the patch pattern of each color (Y, M, C, Bk) on the ITB based on this
data.
3) DC Controller measures the patch pattern with the Patch Sensor (center) (UN49) and
returns the result to the Main Controller 2.