Chapter 11
11.3.1.3 Controlling the Speed According to the Quantity of Printing
If left unattended, the heat of the pressure roller would be absorbed by paper when a large quality of printing is under
way, causing the paper to curl appreciably upon delivery and, thus, making proper stacking difficult.To prevent
excess curling, the speed of the roller is reduced to half (as set in service mode) when as many as 100 large-size sheets
or as many as 200 small-size sheets have been handled.
Service Mode (level 2)
COPIER>OPTION>BODY>DWNSQ-SW
11.3.1.4 Preventing Partial Deformation of the Roller
To prevent deformation otherwise caused by the nip pressure of the fixing roller as occurring when the machine is
left unattended for a long period of time, the fixing roller is rotated for 0.5 sec at half speed (64.55 mm/sec) every 30
min after it has stopped (i.e., during standby/low power mode).
11.3.2 Controlling the Fixing Roller Temperature
11.3.2.1 Outline
The fixing roller is driven by a pulse motor used exclusively for it;
The roller is controlled for the following:
[1] speed to suit the type of medium used
[2] speed to suit the (large) quantity of printing work
[3] during printing
[4] between long sheet intervals
[5] in response to overheating in non-paper contact area
[6] during return from low-power mode
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