(1)Image drum unit
The image drum unit consists of a sensitive drum, a charger, and a developer. The unit forms a toner image on the sensitive drum, using a electrostatic latent image formed by the LED head.
(2)Hopping motor
This motor is a pulse motor of 48 steps/rotation that is
(3)
This motor is a pulse motor of 72 steps/rotation that is
(4)Clutch (for Regist)
Swithes the transfer of power to Roller Regist if necessary depending on the power from
(5)Clutch (for Feed Roller)
Swithes the transfer of power to Feed Roller if necessary depending on the power from
(6)LED head
Image data for each dot line from the control board is received by the shift register and latch register. The 4992 LEDs are driven to radiate the image data to the image drum.
(7)Fuser
The fuser consists of a heater, a heat roller, a thermistor and a thermostat.
An AC voltage from the power supply board is applied to the heater under the control of the HEATON signal from the control board. This AC voltage heats the heater. The control board
supervises the heat roller temperature via the thermistor, and regulates the heater roller at a predetermined temperature (185 °C : Normal paper, MEDIA TYPE = MEDIUM) by connecting or disconnecting the AC voltage supply to the heater.
If the heater roller temperature rises abnormally, the thermostat of the heater voltage supply circuit is activated to cut the AC voltage supply forcibly.
(8)Duplex Unit
Duplex Unit is a unit, which is installed on the printer unit for controlling
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