Fusing Control; On/Off Control Of Halogen Lamp; Warm-Up Of Fuser Unit; Fuser Unit Temperature In Ready State - Konica Minolta pagepro 5650EN Service Manual

10. Fusing section
10.3.2

Fusing Control

• This sensor detects the arrival of the paper at a detection point in the exit area positioned
behind the fuser unit. This sensor also detects the discharge of the paper from this point.
When the sensor receives light (i.e., paper is present), /EXIT goes Low.
10.3.3

ON/OFF Control of Halogen Lamp

• The Halogen Lamp is controllably turned ON and OFF to maintain the fusing control tem-
perature.
10.3.4

Warm-up of fuser unit

• The Halogen Lamp is controllably turned ON and OFF, based on the fusing control tem-
perature.
• At the start of warm-up and when the main motor is at rest, the standby temperature is
taken as the fusing control temperature. When the main motor is operating except at
warm-up, the running temperature is taken as the fusing control temperature.
10.3.5

Fuser unit Temperature in Ready State

• 180 to 185 ºC in Ready (standby) state (During operation, it is higher than 185 ºC.)
10.3.6 Fuser unit Temperature when Abnormal Temperature (higher or lower) is
Detected
• Higher temperature: 250 ºC
• Lower temperature: 130 ºC
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Theory of operation Ver. 1.0 Nov. 2007