[02: Machine: Image Quality]

Execute image density control manually.

DEMS can reduce the variations in thickness that occur in the intervals between the photoconductor and development sleeve operations.

The machine adjusts the image density. This operation takes about 30 seconds during which a message appears on the control panel. Do not pull out the drawer while the message is being displayed.

If the density does not change after applying this function several times, contact your sales or service representative.

Specify the number of sheets the machine prints in full color before it automatically adjusts image density.

After printing the specified number of sheets, the machine automatically adjusts image density.

If you set this to "0", image density adjustment will not be executed automatically.

Specify the adhesion of toner to the drum surface and intermediate transfer belt when image density adjustment is executed.

If color reproduction is affected by the toner's color intensity difference, adjust the toner adhesion.

After specifying this setting, execute [Adjust Image Density/DEMS].

Press [+] or [−] to adjust the toner adhesion.

Adjust the intensity of the laser for transferring image data to the drum.

If you increase the laser intensity, the line width is increased. By adjusting the laser intensity, you can adjust the line width.

After specifying this setting, execute [Adjust Image Density/DEMS].

Press [+] or [−] to adjust the laser intensity.

Adjust the image density difference between the top and bottom of the image.

To make the adjusted settings take effect, turn the main power off and then back on.

Press [+] to increase the density at the bottom (and decrease it at the top) and press [−] to decrease the density at the bottom (and increase it at the top).

Adjust the set fusing temperature according to the machine status.

To achieve proper fusing when printing, the machine adjusts the temperature of the heating roller according to the paper type or thickness. You can reduce the wait time during which the machine makes this adjustment by changing the temperature in effect during standby.

In "Temperature on Standby Mode", you can specify the fusing temperature in standby mode*.

In "Temperature Before Performing a Process", you can specify the fusing temperature applied when the machine is accessed from the control panel or when the machine is receiving print jobs.

Press [+] or [−] to adjust the temperature.

* In standby mode, unlike energy saver mode, the machine is ready for immediate operation.

Increase the amount of lubricant applied to the drum unit.

If you continuously print images that consume a lot of toner, white spots may appear because of a lack of lubricant. If this happens, you can prevent the spots by selecting [Special Mode].

In [Special Mode], the replacement cycle of the cleaning unit for the PCU is shorter because of the increased amount of lubricant that is applied.

If you reset the counter after replacing the cleaning unit for the PCU, [Special Mode] is reset to its factory setting.

Remove vertical and horizontal lines from the printouts.

Vertical or horizontal lines may appear when printing on paper that is larger than the paper used immediately before it.

In such case, press [OK] to cause a roller to press on the fusing belt and prevent vertical and horizontal lines. Select [For Belt Scratches] if vertical or horizontal lines appear on the edges of the paper. Select [For Uneven Gloss (Short Time)] if there are patches of uneven glossiness.

Specify appropriately to improve transferability to thick paper.

Adjust the slope for nip width between the fusing belt and the pressure roller when an envelope is being fed.

*1 Values vary depending on the machine model. If you replace the fusing unit, enter the number shown on the label attached to the new fusing unit.

Adjust the electric potential of the photoconductor unit.

Increase the value to prevent the background from being stained. Depending on the value, white spots may appear.

Specify whether or not to automatically execute [For Uneven Gloss (Short Time)] for smooth fusing belt.