Belt Pressurizing Mechanism; Pressurizing Mechanism Of Pressure Belt - Canon imagerunner C5180 Service Manual

Chapter 11

11.3 Belt Pressurizing Mechanism

11.3.1 Pressurizing mechanism of pressure belt

Objective
The pressure roller is engaged only while printing is under way to prevent deformation of the fixing (pressure)
belt. The pressure roller is engaged/disengaged as necessary.
Pressure belt releasing sequence
Pressure belt touches fixing belt only when printing is conducted to form a fixing nip.
Pressurizing / Releasing pressure motor is driven by fixing pressure release motor (M27).
When fixing pressure release motor (M27) rotates, pressure belt is pressurized. When rotated reversally, the
pressure is released.
It takes 3 seconds from driving the fixing pressure release motor (M27) to change the pressure belt from released
condition to pressurized condition, or from pressurized condition to released condition.
The released / pressurized condition of the pressure belt is detected by the fixing pressure release HP sensor
(PS46) at the timing described below.
- When the main power is turned ON
- When opening/closing the front cover, manual feed tray, fixing feeding unit
- When recovering from sleep mode
Illustration to be inserted
M27
PS46
F-11-17
11-30