You can use the density sensor equipped with the RU option (Relay Unit RU-511) to measure the patch density of the chart for γ correction and perform calibration.
Instead of the γ correction by the internal IDC sensor, the density is corrected by using the printed chart image. This enables secondary transfer, fusing, and correction with each paper's characteristics taken into consideration.
Manual calibration is unnecessary. Note that in that case, on the touch panel of the main body, press Adjustment - Quality Adjustment - Color Density Control - Basic Setting, and then set Periodical Adj. Execution to ON. Color Density Control is not selectable unless Use Color Density Control is set to ON.
The color density control consists of the following three adjustments:
Details of color density control
You can enables the color density control and set the execution timing, etc.
Adjustment of color sensor for each paper type
You can measure and register the density adjustment data corresponding to each paper type.
Color density manual control
You can manually adjust the color density.
• Image quality adjustment flow and the position of this adjustment
In the pre-output image quality adjustment flow, this adjustment is positioned shown below.
Perform the previous adjustment before proceeding with this adjustment.
When Integrated Color Care Unit IQ-501 is mounted on the machine, this adjustment is positioned in the same way as the above.
To not continuously perform the series of adjustment of the image quality adjustment flow, perform [Gamma Automatic Adj.], and then resume from the next adjustment.
Image quality adjustment flow
Position of this adjustment
Adjustment flow when changing the screen
Density Balance Adjustment
Gray balance adjustment
Regular adjustment flow: Normal
This adjustment (Basic settings)
Regular adjustment flow: High Precision
Maximum Density Adjustment
This adjustment (Basic settings / Adjustment of color sensor for each paper type (*) / Color density manual control)