Thermal Control Method
PID control (Phase control) and ON/OFF control is adopted as a fusing temp.control method.
Heating Temp., Press Temp. Detection
The contact thermistor (End) [1] detects fusing belt temp. Contact thermistors (Center / End) [2] detect pressure roller temp. Thermostat [3] is installed as a safety switch detecting a malfunction of the heating pipe.
Temperature Control
The fusing lamps heat and increase fusing temp. after machine power ON. When fusing Temp. reaches pre-rotation temp., the pressure roller rotates to heat its surface equally and raise fusing temp. up to reload temp.
Fusing temp. increases to paper passable temp. when printing.
The pressure roller rotates (pre-rotation) to prevent overshooting after printing.
Warming Up Mode | Fusing warming up begins after machine switch ON. Fusing lamps heat without rotation until those temp. reach “pre-rotation start temp.”. (To heat the grease between the heating pipe and fusing belt until the motor can rotate.) |
Print Mode | The fusing belt starts to rotate and increases fusing temp. up to “print ready target temp.”. |
Wait Mode | The fusing lamps and the fusing motor turn OFF after a certain time passes from fusing print ready condition. |
List of print speed, temperature and paper weight
Paper type | Print speed | Paper weight(g/m2) | Fusing Temperature | |
|---|---|---|---|---|
Thin | Standard | 56-65 | FC | 146 |
BW | 142 | |||
Standard 1 | Standard | 66-74 | FC | 149 |
BW | 145 | |||
Standard 2 | Standard | 75-90 | FC | 153 |
BW | 148 | |||
Recycled | Standard | 66-90 | FC | 149 |
BW | 145 | |||
Middle Thick | Middle | 91-128 | FC | 140 |
BW | 137 | |||
Thick 1 | Middle | 129-163 | FC | 147 |
BW | 144 | |||
Thick 2 | Middle | 164-220 | FC | 145 |
BW | 142 | |||
Special 1 | Standard | 56-90 | FC | 149 |
BW | 144 | |||
Special 2 | Middle | 91-163 | FC | 154 |
BW | 149 | |||
Special 3 | Middle | 164-220 | FC | 154 |
BW | 149 | |||
Special 4 | Standard | 56-90 | FC | 149 |
BW | 145 | |||
Special 5 | Standard | 56-90 | FC | 149 |
BW | 145 | |||
Envelope | Middle | - | 140 | |
Postcard | Middle | - | 147 | |
Label Paper | Middle | - | FC | 147 |
BW | 144 | |||
Coated Paper | Middle | - | FC | 147 |
BW | 144 | |||
Graph of Temperature Control
Details of the special temperature control operation
NO. | Purpose | Operation Details | ||
|---|---|---|---|---|
1 | Curl Reduction Mode | Enable this mode to reduce paper curls in a high-humidity environment. Enabling this function may decrease the print speed for the first print due to the pre-rotation of the fusing unit. For productivity-minded customers, assign a high value in the SP mode(SP1-113-012) to minimize the decrease in productivity.(25 - 100%) Alternatively, assign a high value in the SP mode (SP1-113-006) to increase the temperature of the pressure roller. (0 - 50 deg C) | UP | Enabling this mode forces a decrease in productivity and a rotation before printing to be conducted before starting any job in a high-humidity environment. Enabling this mode may shorten the life of PCDU, Image Transfer Unit, Fusing Unit by 75% when used in a high-humidity environment. |
2 | Water Drop Reduction Mode | Set pre-rotation time for the fusing unit in SP1-118-002 (0 - 99sec) to avoid water droplet patterns (droplets deposited on one side causing white patches to be generated on the other side during printing) in duplex printing. | UP | Enabling this mode forces a rotation before printing to be conducted before starting any job that involves duplex printing. Enabling this mode may shorten the life of Fusing Unit by 77% when used in a low temperature environment. |
3 | Prevention of roller distortion during a long-term period of non-usage | When releasing Sleep mode and maintaining Standby (110 deg C) for a long time, conduct a minute-rotation of the roller at 136° every hour. | Default | In Sleep mode, no minute-rotations are operated. |