OKI Data Infotech Corporation CONFIDENTIAL
Chapter 8 Operation Mechanism
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8.9.2 Performance description
Description of operation: USB/engine firmware functions block
The USB/engine firmware runs on the IPB5 board to control each section of the engine and USB
interface.
The following describes the main function blocks of the USB/engine firmware.
Operation panel driver: Controls I/O of the LCD, LED, button and buzzer on the
operation panel.
USB driver: Controls the USB interface.
Mechanical control driver: Controls the printing performance of the mechanical system
and also controls the various actuators to enable maintenance
of the ink system and control of the media heater.
Maintenance driver: Controls the serial interface for the maintenance console.
Temperature correction task: Monitors the thermistor.
Sensor monitoring task: Monitors the sensors.
Setup task: Allows various operations via the operation panel, and prints
various built-in patterns.
Flash driver: Reads from and writes to the flash memory.
Ink IC chip driver: (CIS model)
Reads from and writes to the IC chip included in the ink
cartridge.
(LCIS model)
Reads from and writes to the IC ink amount extension chip.
Error monitoring task: Monitors sensors to check the engine anomalies.
Print task: Controls the band memory and print data.
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