Xerox 242 - Manual (Page 155)

Color Tools 147
Editing Gradation Tables
When you open the Gradation Tool window, the default gradation table,
DefaultTable, is selected in the Gradation Table list, and is displayed in the graph.
This table serves as a baseline and consists of a 45° gradation curve, with Brightness
and Contrast set to
0, and Contrast Center set to 50. All of the color separations are
selected.
Gradation tables that you create also appear in the Gradation Table list. When you
select a gradation table, the predefined settings are immediately applied to the
processed job that you are working with.
The separations buttons enable you to select one, all, or any combination of
separations to edit for a specific gradation table. Selecting a specific separation
enables you to change the color balance for a specific tonal range.
When you open the Gradations Tool window, all of the separations are selected.
1. Click the All Colors button to edit all the separations simultaneously.
2. Click the individual separations you wish to edit—for example, select the cyan
separation only.
3. Click the curve in the graph to add a point, and then drag the point to modify
the separation. When you select a point, its value appears in the
Input or
Output boxes.
The Input axis represents the tone values of the image before gradation
changes. The Output axis represents the tone values of the image after
gradation changes.
4. To view gradation changes in your job, click Refresh. Changes are automatically
applied to the displayed image in the After view.
5. To remove a point on the curve, select the point and then click Remove.
6. To reset the gradation curve to a 45° curve, click the Reset button .
7. To revert to the original gradation settings, click Revert.
8. To remove the last change you made to the gradation graph, click Undo.
Creating a New Gradation Table
1. In the Gradation Tool window, modify your gradation table as required.
2. Click the Save button .