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Gradation refers to the dark to light continuum of shades of a color. The more shades in the gradations of colors that are printed, the more natural printouts seem. If color reproducibility becomes poor and the density and brightness of printouts differs markedly from the originals, perform the appropriate auto adjustment. Before adjusting the gradation, check the remaining toner level. Gradation adjustments require significant toner. There are three types of adjustments: Full Adjust, Quick Adjust, and Adjust Copy Image.
Fewer shades in the gradations
More shades in the gradations
Caution
Adjustments may not be performed effectively if there is not sufficient toner.
Full Adjust
This adjustment optimizes reproducibility for color printing. When the machine performs full adjustment, it obtains information to optimize color reproducibility. The machine maintains this information until the next time you perform full adjustment. For making full adjustment, an adjustment image will be printed twice and scanned twice. Note that you cannot perform this adjustment while performing some functions, including, scanning, and printing.
Caution
This machine adjusts the toner and print speed according to the paper type. To make effective adjustments, select the correct paper type.
1. Tap ⋖Menu⋗.
2. Tap ⋖Adjustment/Maintenance⋗.
3. Tap ⋖Auto Adjust Gradation⋗ 
4. Check that the size and type of paper displayed on the screen is loaded in the machine, and tap ⋖OK⋗.
5. Confirm the procedure tap ⋖Start⋗.
6. Open the feeder after the screen displayed during printing disappears.
7. Place the adjustment image on the platen glass with the print side face down.
* Place the test page face down on the platen glass, with the black bar along the inner edge of the platen glass.
8. Gently close the feeder.
9. Press 
10. Open the feeder, remove the first adjustment image, and then place the second adjustment image on the platen glass with the print side face down.
* Place the test page face down on the platen glass, with the black bar along the inner edge of the platen glass.
11. Gently close the feeder.
12. Press
13. Open the feeder, and remove the second adjustment image.
14. Gently close the feeder.
Caution
If the ⋖Correction failed.⋗ message is displayed
Quick Adjust
This adjustment maintains the optimized status that was acquired by ⋖Full Adjust⋗. Note that you cannot perform this adjustment while performing some functions, including, scanning, and printing. If the result of this adjustment is not satisfactory, perform ⋖Full Adjust⋗. This adjustment may be automatically performed after you replace a toner cartridge.
1. Tap ⋖Menu⋗.
2. Tap ⋖Adjustment/Maintenance⋗.
3. Tap ⋖Auto Adjust Gradation⋗
4. Tap ⋖Start⋗.
Caution
You can set the machine to perform this adjustment automatically after the power is turned ON.
Adjust Copy Image
This adjustment improves the result of copies and printing from a USB memory device. For correcting copy images, an adjustment image will be printed and scanned. Note that you cannot perform this adjustment while performing some functions, including, scanning, and printing.
1. Tap ⋖Menu⋗.
2. Tap ⋖Adjustment/Maintenance⋗.
3. Tap ⋖Auto Adjust Gradation⋗
4. Check that the size and type of paper displayed on the screen is loaded in the machine, and tap ⋖OK⋗.
5. Confirm the procedure, and tap ⋖Start⋗.
6. Open the feeder after the screen displayed during printing disappears.
7. Place the adjustment image on the platen glass with the print side face down.
* Place the test page face down on the platen glass, with the black bar along the inner edge of the platen glass.
8. Gently close the feeder.
9. Press
10. Open the feeder, and remove the adjustment image.
11. Gently close the feeder.
Caution
If the ⋖Correction failed.⋗ message is displayed