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MX-M1100 FUSING SECTION N – 3
D. Fusing operation
The upper and lower heat rollers apply heat and pressure to toner
on paper, fusing toner images on paper.
on paper, fusing toner images on paper.
A heat roller of silicon rubber is used in this fuser. This is due to the
following:
1)
following:
1)
The upward separation is executed. (Since the hardness of the
upper heat roller is high, the lower heat roller is deformed to
face up paper).
upper heat roller is high, the lower heat roller is deformed to
face up paper).
2)
The nip quantity is increased as it will increase the heating
capacity of the paper. (Nip quantity: 10 - 11mm)
capacity of the paper. (Nip quantity: 10 - 11mm)
3)
A flexible roller allows the toner to fuse without deforming the
toner shape.
toner shape.
E. Fusing temperature control
Thermistors are provided at the center and the edges of the upper
heat roller.
The roller temperature is detected by the installed thermistor, and
the heater lamp is controlled to maintain the temperature at the
specified level.
The initial values of the specified temperature are as shown in the
table. (The fusing temperature can be set with Sim. 43-1.)
heat roller.
The roller temperature is detected by the installed thermistor, and
the heater lamp is controlled to maintain the temperature at the
specified level.
The initial values of the specified temperature are as shown in the
table. (The fusing temperature can be set with Sim. 43-1.)
(*1) North America: 160
°C
Europe: 175
°C
F. Fusing temperature control when heavy paper
is fed though the fuser
When heavy paper is fed, the heater lamp is controlled to maintain
the heat roller temperatures at the specified levels below. In addi-
tion, the SM (resist roller control motor) operation start temperature
is set to improve the job efficiency and the fusing performance.
The default values of the specified levels are as shown in the table
below. (The fusing temperature can be set with Sim. 43-1.)
the heat roller temperatures at the specified levels below. In addi-
tion, the SM (resist roller control motor) operation start temperature
is set to improve the job efficiency and the fusing performance.
The default values of the specified levels are as shown in the table
below. (The fusing temperature can be set with Sim. 43-1.)
When paper is fed from the tray which is set as a heavy paper tray,
the fusing temperature is changed to that for feeding heavy paper
and CPM falls to about 75%. (The process speed is not changed.)
After completion of paper feed from the heavy paper tray (when the
tray is set to a normal paper tray, or the job is completed and the
machine enters the ready state, etc.), the fusing temperature is set
to the normal setting.
Heavy paper: Heavy paper 1/2/3/4 and tab sheet.
the fusing temperature is changed to that for feeding heavy paper
and CPM falls to about 75%. (The process speed is not changed.)
After completion of paper feed from the heavy paper tray (when the
tray is set to a normal paper tray, or the job is completed and the
machine enters the ready state, etc.), the fusing temperature is set
to the normal setting.
Heavy paper: Heavy paper 1/2/3/4 and tab sheet.
G. Cleaning operation
The heat roller is cleaned by the web unit.
The web diameter is 54mm, and the web sheet length is 50m.
After completion of a job, there is feed of 7mm (Max.) to 2mm. The
difference of 7mm to 2mm depends on the job quantity and the
pixel counter.
Also after completion of warming up, it is fed by 7mm. This is
because the web sheet is pushed against the upper heat roller by
the backup roller and dirt on the web sheet must be removed.
The feed quantity of the web sheet is 0.5mm / 7 copies (variable
with Sim. 43-32).
The web sheet remaining quantity is detected by two sensors
(WEBED, WEBSPD) attached to the web unit.
In case of Web Near End, "Ready to scan for copy. (Maintenance
required.Code: FK3)" is displayed.
In case of Web End, the code FK3 is displayed and the machine is
stopped.
Replace the web unit, and clear the web feed counter with Sim. 24-
4. (The display of FK3 is also deleted.)
When the web unit is not installed, the FK3 code is displayed. In
this case, set the web unit and cancel it with Sim.14. (The FK3
code is deleted, but the web feed counter continues the operation.)
After completion of a job, there is feed of 7mm (Max.) to 2mm. The
difference of 7mm to 2mm depends on the job quantity and the
pixel counter.
Also after completion of warming up, it is fed by 7mm. This is
because the web sheet is pushed against the upper heat roller by
the backup roller and dirt on the web sheet must be removed.
The feed quantity of the web sheet is 0.5mm / 7 copies (variable
with Sim. 43-32).
The web sheet remaining quantity is detected by two sensors
(WEBED, WEBSPD) attached to the web unit.
In case of Web Near End, "Ready to scan for copy. (Maintenance
required.Code: FK3)" is displayed.
In case of Web End, the code FK3 is displayed and the machine is
stopped.
Replace the web unit, and clear the web feed counter with Sim. 24-
4. (The display of FK3 is also deleted.)
When the web unit is not installed, the FK3 code is displayed. In
this case, set the web unit and cancel it with Sim.14. (The FK3
code is deleted, but the web feed counter continues the operation.)
State
95/110-sheet
machine
85-sheet
machine
Upper heat roller
Ready standby
190
°C
180
°C
Preheat standby
(*1)
160
°C
State
95/110-sheet
machine
85-sheet
machine
Upper heat roller
Fusing control
temperature
temperature
205
°C
195
°C
PSM operation start
temperature (RTH1,
center section)
temperature (RTH1,
center section)
193
°C
183
°C
PSM operation start
temperature (RTH2,
edge section)
temperature (RTH2,
edge section)
190
°C
180
°C
composed of the
web roller feed side
web roller feed side
WEBED
WEBSPD
composed of the
web roller winding side
web roller winding side
Upper heat roller
The remaining toner or paper dust etc.
on the upper heat roller.
on the upper heat roller.
Web backup roller
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