Color Density Control: Color Density Control Flow

You can use the density sensor mounted in Relay Unit RU-518 to measure the patch density of the chart for γ correction and perform density adjustment.

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.

Tips

  • Manual density adjustment 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

Description

Basic Settings

You can enables the color density control and set the execution timing, etc.

  • When using the color density control function (Adjustment of color sensor for each paper type / Color density manual control), always set the Use Color Density Control to ON.

  • To automatically perform calibration using Relay Unit RU-518, set the Periodical Adj. Execution to ON.

Each Paper Type Color Sensor Adjustment

You can measure and register the density adjustment data corresponding to each paper type.

  • Perform optionally this adjustment as needed.

  • To use special paper or increase the accuracy of the automatic adjustment, the adjustment of color sensor for each paper type is recommended.

Color density manual control

You can manually adjust the color density.

Density adjustment flow and the position of this adjustment

  • In the pre-output density adjustment flow, this adjustment is positioned shown below.

  • Perform the previous adjustment before proceeding with this adjustment.

  • When Intelligent Quality Optimizer IQ-501 is mounted on the machine, this adjustment is positioned in the same way as the above.

Reference

  • To not continuously perform the series of adjustment of the density adjustment flow, perform Gamma Automatic Adj., and then resume from the next adjustment.

Density Adjustment Flow

Position of this adjustment

Previous adjustment

This adjustment

Next adjustment

Adjustment flow when changing the screen

Density Balance Adjustment

This adjustment
(Basic settings / Adjustment of color sensor for each paper type (*) / Color density manual control)

*: Optional

- (None)

Regular adjustment flow: Normal

This adjustment (Basic settings)

  • Set the Periodical Adj. Execution to ON.

Regular adjustment flow: High Precision

Maximum Density Adjustment

This adjustment (Basic settings / Adjustment of color sensor for each paper type (*) / Color density manual control)

*: Optional

- (None)