If there is a problem with the quality of the printing such as uneven printing or an inappropriate amount of ink being used, the following questions should be addressed.
Is an old Print cartridge being used?
Print cartridges should be opened before their expiration date and used within six months of being opened.
Does the paper type setting match?
Make sure that the paper type setting of the printer driver matches the type of paper loaded. See Printing on Various Paper Types.
Are you printing on the wrong side of the paper?
Check which side should be printed on when using inkjet plain paper. If you print on the wrong side, the quality of the printing may be lower and the inside of the printer may get dirty. See Paper Handling Precautions.
Is the setting of the envelope selector suitable?
The printed side may become worn depending on the type of image. If this happens, set the envelope selector to the rear position .
Is the brightness of the image suitable?
If the printing is being smeared even when the envelope selector is set to the rear position , the density of the printing may be too high. Increase the brightness of the image.
Is the [Duplex/Booklet] check box selected?
Duplex printing tends to produce fainter prints than single-sided printing. When performing single-sided printing, make sure the [Duplex/Booklet] check box is not selected.