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. Checking the Remaining Toner Level 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)>.

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)>.

Press

(Settings/Registration)

<Auto Adjust Gradation>.

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)

Select the paper source in which the paper you selected in step 2 is loaded, and press <OK>.

Press <Start Printing>.

A test page is printed.

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

1	Place the test pages in the feeder. Place the test pages in the feeder.
2	Press <Start Scanning>. The test pages are scanned and full adjustment is completed.

Scanning Using the Platen Glass

1	Place the test page on the platen glass. Place the test page as indicated by the on-screen instructions.
2	Close the feeder and press <Start Scanning>. The machine starts scanning the test page.
3	Open the feeder, and remove the test page.
4	Repeat steps 4 (Press <Start Printing>) and 5 (Scan the test page) above for full adjustment. To complete adjustment, follow the on-screen instructions to print and then scan the test page multiple times.

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

Press

(Settings/Registration)

<Auto Adjust Gradation>.

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.

Press <Start>.

C3800 Series

Press

(Settings/Registration)

<Auto Adjust Gradation>.

Press <Quick Adjust>.

The adjustment is applied to all paper types.

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)

Select On to use the feeder when scanning the test page or Off to use the platen glass.

For C3800 Series

This item only appears if you have the 2-Sided Single Pass Feeder installed.

If you have the 2-Sided Double Pass Feeder installed, you cannot use the feeder when scanning the test page. Scan using the platen glass.

<Adjustment Level> (C5800 Series Only)

Enables you to set the level for gradation adjustment.

Enables you to set whether to use default settings for gradation adjustment.


Since this may cause poor color balance, make sure to perform auto gradation adjustment (full adjustment) after changing the settings.