To reduce creases in envelopes, this machine lowers nip pressure if the following settings are made:
- Select [Envelope] as [Paper Type] in [Tray Paper Settings]
- MP C6503/C8003: Press the [User Tools] icon -> [System Settings] -> [Tray Paper Settings] to open the [Tray Paper Settings] screen.
- Pro C5200S/C5210S: Press the [User Tools] key -> [System Settings] -> [Tray Paper Settings] to open the [Tray Paper Settings] screen.
Select [Envelope] as [Paper Type] in [Tray Paper Settings] for IMSS setting (Pro C5200S/C5210S only)
Press the [Paper Settings] key to open the [Tray Paper Settings] screen.
The pressure position 2 (envelope position) is selected automatically as a nip width so that the nip width for envelope printing becomes narrower in order to reduce the nip pressure.
The nip width adjustment is performed by changing the pressure roller position. The machine predicts the thermal expansion coefficient of the fusing roller from the output of the thermistor (hot roller shaft). The machine changes the the pressure roller position according to the thermal expansion coefficient of the fusing roller, so that the nip width becomes optimal for envelope printing.
Nip Width Adjustment for New Fusing Unit (Pro C5200S/C5210S)
The nip width of the fusing unit vary among individual units. Therefore, after replacing the fusing unit with a new one, the nip width needs to be adjusted by entering the adjustment value on the label attached to the fusing unit.
By performing this adjustment, the nip width adjustment for the envelope, described above, can be done correctly.
For details about how to make the nip width adjustment for a new fusing unit, see Adjustment for the Nip Width of the Fusing Unit (Pro C5200S/C5210S only).