Fuser Control; Fuser Control Method; On/Off Control Of The Heater Rod; Fuser Warming Up - Star Micronics LS-5 SERIES Technical Manual

3-3. Fuser Control

3-3-1. Fuser Control Method

ON/OFF control of the heater rod is performed based on fuser control temperature.
While the ROS is warming up and the main motor is being stopped, use the standby temperature for the fuser control
temperature. When the main motor is running except for warming up time (e.g., during print operation and erase cycle),
use the the running temperature for the fuser control temperature.

3-3-2. ON/OFF Control of the Heater Rod

ON/OFF control of the heater rod is performed based on the following rules:
• With fuser control temperature of below approx. -2°C (fuser ON temperature), the heater rod goes ON.
• With fuser control temperature of above ±0 °C (fuser OFF temperature), the heater rod goes OFF.

3-3-3. Fuser Warming up

On starting warming up of the fuser, the heater rod lights, and when the temperature of the heat roll surface (detection
temperature of the temp. sensor assy's thermistor) reaches the fuser control temperature (standby temperature), the fuser
has finished warming up. The main motor operates during warming up of the fuser.

3-3-4. List of Fuser Temperatures

High trouble temperature
Fuser OFF temperature
Fuser control temperature
Fuser ON temperature
Low trouble temperature

3-4. Erase Cycle

When the print operation is interrupted due to the OFF of the interlock switch, paper jam, removal of a paper cassette or
power OFF, an erase cycle is performed in the first recovery (when the interlock switch is ON, a paper cassette is mounted,
and power is ON). In an erase cycle, the main motor operates to output CR (DC) and TR(–) of the HVPS.
Note 1: An erase cycle stops by turning the interlock switch OFF, removing the paper cassette and activating the exit
sensor. An erase cycle resumes by turning the interlock switch on, mounting a paper cassette and turning power
ON.
Note 2: An erase cycle is not performed when the regi. sensor or exit sensor is actuated during recovery (when the
interlock switch is ON, a paper cassette is mounted, and power is ON).
Temperature
Approx. 185°C (standby temperature + approx. 35°C)
Fuser control temperature ±0 °C
Standby temperature: 150°C (nominal)
Running temperature: 160°C (nominal)
Fuser control temperature –2 °C
Approx. 125°C
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