Epson EPL-5800 Service Manual page 54

EPSON EPL-5800
AT 600DPI
When the power switch is turned ON, the printer performs initialization, warm-up starts,
and the heater lamp is turned on. Then, the following temperature controls are performed.
"
Temperature control mode 1
This mode controls temperature during printing as 195
standby as 115 ° C.
After this mode continues for 90 seconds, it shifts to the mode 2.
"
Temperature control mode 2
After this mode continues for 208 seconds, it shifts to the mode 3.
Printing temperature of the fusing roller is gradually lowered from 195
185 C.
°
"
Temperature control mode 3
Controls temperature during printing as 185
115 C.
°
Unless any errors generated or open the upper cover, this mode is sustained.
AT 1200DPI
When the power switch is turned ON, the printer performs initialization, warm-up starts,
and the heater lamp is turned on. The heater lamp stays ON until the temperature of the hear
roller reaches about 155 C. Then, the following temperature controls are performed.
°
"
Temperature control mode 1
Controls temperature during printing as 155
115 C.
°
After this mode continues for 45 seconds, it shifts to the mode 2.
"
Temperature control mode 2
After this mode continues for 208 seconds, it shifts to the mode 3.
Printing temperature of the fusing roller is gradually lowered from 155
150 C.
°
"
Temperature control mode 3
Controls temperature during printing as 150
Unless any errors generated or open the upper cover, this mode is sustained.
Operating Principles
C and temperature in
°
° C to
C and temperature in standby as
°
C and temperature in standby as
°
C to
°
° C and in standby as 115 ° C.
Operating Principles of Mechanism
Warm-up
195°C
185°C
155°C
150°C
115°C
Mode 1: 90sec
Figure 2-13. Heat Roller Temperature Control
Table 2-3. Heat Roller Temperature Control
Temperature just after temperature control started
Condition before
temperature control is Less than 50°C
aborted
Mode 1, during the warm-up Mode1
Mode 2, 3, or when the power
Mode 1
supply OFF
Revision B
Temperature detected by
thermistor
During Printing
(600dpi)
During Printing
(1200dpi)
Standby
Mode 2: 208sec Mode 3
50°C or over
115°C or over
less than 115°C
Mode 2 Mode 3
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