Xerox C2424 Service Manual - Page 78
Drum Assembly
UPC - 095205676532
View all Xerox C2424 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 78 highlights
Drum Assembly The drum assembly and transfix system form the key portion of the printer where imaging takes place. The drum assembly and transfix system are separate, but interrelated. This section discusses the drum assembly. The next section goes into more detail on the transfix system. In operation, the image to be printed on paper is first "printed" on the rapidly rotating drum. The paper preheater heats a sheet of paper or transparency film to prepare it for the image transfer process. The heated paper is then passed between the drum (now rotating much more slowly) and the transfix roller. Under the pressure between the drum and the transfix roller, the image is transferred to the sheet of paper. An encoder disk and sensor on the left end of the drum monitors the drum's speed and position. Transfix Roller Paper Preheater Paper Path Drum Heater Drum s2424-037 The drum heater heats the surface of the drum to about 60o C (140o F) for imaging. The drum heater does not rotate. The heater is inside the drum, and is controlled by the drum heater relay board. The drum heater consists of two resistive heater coils that operate in series for 220 V and in parallel for 110 V operation. The series/parallel operation is controlled by the drum heater relay board. A temperature sensor in contact with the drum surface monitors the drum temperature. The main board interprets the sensor's signal and turns on the drum heater and drum fan to heat the drum, or turns on the drum fan alone to cool the drum. 2-34 WorkCentre C2424 Service Manual