Adjusting Gradation

If color gradation reproducibility has become so poor that the gradation in the printed or copied image differs markedly from the print data or original document, gradation adjustment may improve the problem. There are two types of adjustments: Full Adjustment and Quick Adjustment.
Adjustments may not be performed effectively if there is not sufficient toner.
For C3800 Series
If the machine is running without having executed <Full Adjust> or <Quick Adjust> once, it may take time to print the first sheet after turning the power ON.

Full Adjustment

Correct the gradation of an image accurately and optimize reproducibility during printing. Optimized information will be retained until the next accurate correction.
You can use the following paper sizes/types.
C5800 Series
Size: A3, A4, 11" x 17", LTR
Type: Plain 1 to 3, Heavy 1 to 7
C3800 Series
Size: A3, A4, 11" x 17", LTR
Type: Thin 1 to 2, Plain 1 to 3, Recycled 1 to 3, Heavy 1 to 7
If the colors in the printed image differ from those in the original (C3800 Series only)
Adjust the gradation in the steps below according to the paper and settings used for printing.
To print on heavy paper
1. Use thin, plain, or recycled paper and adjust with <Thin/Plain/Recycled>.
2. Use heavy paper and adjust with <Heavy>.
If both of the following apply:
To print in Superfine on thin, plain, or recycled paper
If <Speed/Image Quality Priority for Superfine (1200 dpi)> is set to <Quality Priority> <Speed/Image Quality Priority for Superfine (1200 dpi)> (C3800 Series Only)
1. Use thin, plain, or recycled paper and adjust with <Thin/Plain/Recycled>.
2. Use thin, plain, or recycled paper and adjust with <Thin/Plain/Recycled(1200dpi)>.
1
Press  (Settings/Registration)  <Adjustment/Maintenance> <Adjust Image Quality> <Auto Adjust Gradation>.
2
Select the paper to adjust, and press <Full Adjust>.
Changing the Settings for Adjustment
You can change the settings for adjustment, such as whether the feeder is used during full adjustment. Changing the Settings for Adjustment
For C5800 Series
If you selected <Simple> in <Adjustment Level>, it is not necessary to select the paper. Adjustment is applied to all paper types.
For C3800 Series
<Thin/Plain/Recycled(1200dpi)> can only be selected when <Speed/Image Quality Priority for Superfine (1200 dpi)> is set to <Quality Priority>. <Speed/Image Quality Priority for Superfine (1200 dpi)> (C3800 Series Only)
3
Select the paper source in which the paper you selected in step 2 is loaded, and press <OK>.
4
Press <Start Printing>.
A test page is printed.
5
Scan the test page.
If the paper source selected in step 3 contains one of the paper types listed below, use the platen glass for scanning even when <Use Feeder When Performing Full Adjust> is set to On.
C5800 Series: Heavy 6, Heavy 7
C3800 Series: Thin 1, Thin 2, Heavy 6, Heavy 7
Scanning Using the Feeder
Scanning Using the Platen Glass

Quick Adjustment

This adjustment maintains the optimized status that was acquired by <Full Adjust>. If the result of this adjustment is not satisfactory, perform <Full Adjust>.

C5800 Series

1
Press  (Settings/Registration)  <Adjustment/Maintenance> <Adjust Image Quality> <Auto Adjust Gradation>.
2
Select the paper to adjust, and press <Quick Adjust>.
If you selected <Simple> in <Adjustment Level>, it is not necessary to select the paper. Adjustment is applied to all paper types.
3
Press <Start>.

C3800 Series

1
Press  (Settings/Registration)  <Adjustment/Maintenance> <Adjust Image Quality> <Auto Adjust Gradation>.
2
<Thin/Plain/Recycled>  Press <Quick Adjust>.
The adjustment is applied to all paper types.
3
Press <Start>.

Changing the Settings for Adjustment

You can change the settings for adjustment, such as whether the feeder is used during full adjustment.
 (Settings/Registration)  <Adjustment/Maintenance>  <Adjust Image Quality>  <Auto Adjust Gradation>
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