Canon LBP-2000 Service Manual page 52

2 . Controlling the fixing temperature
The fixing temperature is controlled in relation to the following:
a . paper type
b . power switch activation
c . sleep mode (power saving mode)
d . down sequence
a . Control by paper type
To ensure good fixing on rough paper and transparencies, the Printer's utility mode includes
rough paper mode and transparency mode; for prevention of curling of paper, the Printer offers
normal L mode, which uses a control temperature different from that used for plain paper.
Control temperature
Mode
during printing
Normal mode
Rough paper mode
Transparency mode
Normal L mode
Note: • Normal mode is used when printing on plain paper (default).
• Rough paper mode is used when printing on heavy paper or in a low temperature
e nv i r o n m e n t .
• Transparency mode is used when printing on transparencies.
• Normal L mode is used to prevent curling on plain paper L.
b . Control when turning on the power switch
(1) Conditions for ending the wait time
To reduce the wait time, the wait interval is ended when any of the following conditions exist,
causing the Printer to move to standby state:
• 25 sec or more passes after the fixing heater (H101) is supplied with power and the fixing
temperature reaches 150°C or higher.
• 27 sec or more passes after the fixing heater (H101) is supplied with power and the fixing
temperature reaches 145°C or higher.
However, to ensure good fixing as soon as the power switch is turned on, the fixing heater is
continuously kept ON even in standby state until the target temperature is reached.
Table 2-2-1
Control temperature
during standby
175˚C 173˚C
195˚C 195˚C
170˚C 180˚C
173˚C 173˚C
Remarks
After receipt of /PRNT, the control temperature is
held to 195˚C and, at the same time, INTR is
extended by 5 sec. Also, in continuous printing,
the distance between sheets is increased.
In continuous printing, the distance between
sheets is increased.
CHAPTER 2
2 - 13