You can adjust the tone curve for a secure job.
This function becomes available only when Color Centro is installed on your computer.
Select a job from the Secure Job list.
To display the Secure Job list, select the Secure Box to display the [Box Password] screen, enter the password on the displayed screen, then release the lock.
You can adjust tone curves for print jobs that are set to PS, PDF, PDF (APPE), TIFF, JPEG, or PPML as the PDL type displayed in the job list, but you cannot do so for other types of print jobs.
Select [Secure Job] - [Tone Curve Adjustment] from the [Job Operations] menu.
The [Tone Curve Adjustment] screen starts.
You can also select [Tone Curve Adjustment] from the right-click menu.
You can also click the Tone Curve icon to adjust tone curves.
For details about the subsequent operations, refer to Adjust the Tone Curve.