Ventilation

To remove dust and ozone from air going through the charge roller unit and expel it from the machine, the development intake fan [F] on the front of each PCDU blows air in, and the development exhaust fan (left) [A], the development exhaust fan (right) [C], and the ozone exhaust fan [G] expel it. The ozone exhaust fan [G] has a dust filter [D] and an ozone filter [E], and the development exhaust fan (left) [A] and the development exhaust fan (right) [C] have a dust filter [B].

The machine prevents the following problems by expelling ozone around the PCDU.

• Uneven image density caused by ozone
• Toner adhesion caused by the increase in temperature
• Toner scattering
• Background stains caused by the increase in drum temperature
• Deterioration of the developer