Calibrating the Gradation

Gradation is the gradual changing of the color depth and brightness. If the gradation is not reproduced correctly and the printed data greatly differs from the source data or original, calibrate the gradation (calibration).
You cannot perform calibration while printing or scanning or when there is insufficient toner.

Gradation can be calibrated in two ways: Quick Adjust or Full Adjust.
First, try Quick Adjust for simple calibration. If you do not see an improvement, perform Full Adjust to calibrate more accurately.

Simple Calibration (Quick Adjust)

Calibrating More Accurately (Full Adjust)

IMPORTANT

Toner is used during calibration.

Performing frequent calibration may affect the lifetime of the toner.

If the symptoms do not improve even after performing calibration, the remaining amount of toner may be low. It is recommended to check the remaining amount of toner, and replace any toner containers, as needed.

Checking the Remaining Amount of Consumables and Parts

Replacing the Toner Cartridges

NOTE

For C3100 Series

If you have never adjusted the gradation on the machine, it may take some time to print the first sheet after the power is turned ON.

Simple Calibration (Quick Adjust)

This section describes how to perform calibration (Quick Adjust) using the control panel.
You can also perform calibration (Quick Adjust) using Remote UI from a computer. Managing the Machine from a Computer (Remote UI)

For C7100 Series and C5100 Series

For C3100 Series

For C7100 Series and C5100 Series

On the control panel, press [

Settings/Registration] in the [Home] screen or other screen. [Home] Screen

The [Settings/Registration] screen is displayed.

Press [Adjustment/Maintenance]

[Adjust Image Quality]

[Auto Adjust Gradation].

The [Auto Adjust Gradation] screen is displayed.

Select the paper type to calibrate.

You can skip this step if the paper type is not displayed. Proceed to Step 4. In this case, calibration will be applied to all paper types.

Press [Quick Adjust].

The [Quick Adjust] screen is displayed.

Press [Start].

Calibration is performed.
When calibration is complete, [Adjustment is complete.] is displayed.
If the result after performing Quick Adjust is not satisfactory, perform Full Adjust. Calibrating More Accurately (Full Adjust)

For C3100 Series

Calibration will be applied to all paper types.

On the control panel, press [

Settings/Registration] in the [Home] screen or other screen. [Home] Screen

Press [Adjustment/Maintenance]

[Adjust Image Quality]

[Auto Adjust Gradation].

The [Auto Adjust Gradation] screen is displayed.

Press [Thin/Plain/Recycled]

[Quick Adjust].

The [Quick Adjust] screen is displayed.

Press [Start].

NOTE

You can configure the settings to perform Quick Adjust automatically at regular periods. [Time Settings for Auto Adjust Gradation]

For C7100 Series and C5100 Series, you can use [Adjustment Level] on the screen in Step 2 to set the range to apply Quick Adjust. By default, [By Paper Type Group] is set, and you can make calibrations for each paper type selected in Step 3. When you select [Simple], calibration is applied to all paper types and calibration accuracy decreases, but the time it takes for calibration becomes shorter. Administrator privileges or DeviceAdmin privileges are required to configure the setting.

* If you do not perform Full Adjust after changing the settings, the color balance may deteriorate.

Calibrating More Accurately (Full Adjust)

Scan the test page printed with the machine on the feeder or platen glass to calibrate the gradation more accurately.
The result calibrated here is used until Full Adjust is performed next time.

Paper Sizes and Types Usable for Calibration

Depending on the model, the size and type of paper usable for calibration vary.

For C7100 Series and C5100 Series

Size: A3, A4, 11" x 17", LTR

Type: Plain 1 to Plain 3, Heavy 1 to Heavy 7

For C3100 Series

Size: A3, A4, 11" x 17", LTR, 8K, 16K

Type: Thin 1 and Thin 2, Plain 1 to Plain 3, Recycled 1 to Recycled 3, Heavy 1 to Heavy 7

Use the control panel to perform calibration (Full Adjust). You cannot perform calibration (Full Adjust) using Remote UI from a computer.

On the control panel, press [

Settings/Registration] in the [Home] screen or other screen. [Home] Screen

The [Settings/Registration] screen is displayed.

Press [Adjustment/Maintenance]

[Adjust Image Quality]

[Auto Adjust Gradation].

The [Auto Adjust Gradation] screen is displayed.

Configure the calibration settings.

If you do not select [Use Feeder When Performing Full Adjust], scan the printed test page one sheet at a time using the platen glass.

[Use Feeder When Performing Full Adjust] may not be displayed depending on the model. Use the platen glass when you scan the test page.

If you select [On] for [Initialize When Using Full Adjust], the previous Full Adjust data is initialized and calibrated.

* If you do not perform Full Adjust after changing the calibration settings, the color balance may deteriorate.

Select the paper type to calibrate.

You can skip this step if the paper type is not displayed. Proceed to Step 5. In this case, calibration will be applied to all paper types.

Press [Full Adjust].

The [Select Paper] screen is displayed.

Select the paper source with the loaded usable paper, and press [OK].

Press [Start Printing].

A test page is printed.

Scan the test page to perform calibration.

If the test page was printed on Heavy 6 or Heavy 7, use the platen glass to scan.

Using the Feeder to Scan (C7100 Series)

Follow the instructions on the screen to load the test page in the feeder.

Press [Start Scanning].

Press [Start Printing].

Follow the instructions on the screen to load the test page in the feeder.

Press [Start Scanning].

The test page is scanned, and adjustment is performed.
When calibration is complete, [Adjustment is complete.] is displayed.

Using the Feeder to Scan (C5100 Series and C3100 Series)

Follow the instructions on the screen to load the test page in the feeder.

Press [Start Scanning].

The test page is scanned, and calibration is performed.
When calibration is complete, [Adjustment is complete.] is displayed.

Using the Platen Glass to Scan

Open the feeder.

Follow the instructions on the screen to place the test page on the platen glass.

Gently close the feeder.

Press [Start Scanning].

Test page 1 is scanned.

Press [Start Printing].

Test page 2 is printed.

Remove test page 1 from the platen glass.

Repeat Steps 2 to 6 to finish scanning all the test pages.

Calibration is performed after all the test pages are scanned.

For C7100 Series, scan four sheets of test pages.

For C5100 Series and C3100 Series, scan three sheets of test pages.

When calibration is complete, [Adjustment is complete.] is displayed.

Remove the test page from the platen glass.

NOTE

When Changing the Calibration Level (For C7100 Series and C5100 Series)

You can use [Adjustment Level] on the screen in Step 2 to set the range to apply Quick Adjust. By default, [By Paper Type Group] is set, and you can make calibrations for each paper type selected in Step 4. When you select [Simple], calibration is applied to all paper types and calibration accuracy decreases, but the time it takes for calibration becomes shorter. Administrator privileges or DeviceAdmin privileges are required to configure the setting.

* If you do not perform Full Adjust after changing the settings, the color balance may deteriorate.