Basic Operation Outline; Printer Diagram; Print Driving; Firmware - Canon 1692B002 Service Manual

Ipf8000 series

Table of Contents

2.1 Basic Operation Outline

2.1.1 Printer Diagram

A printer diagram is shown below.

Linear encoder

Carriage cover sensor

Upper cover lock solenoid(L)

Upper cover lock solenoid(R)

Upper cover lock switch(L)

Upper cover lock switch(R)

Carriage motor

Feed motor

Operation panel

Media take up relay PCB

J103

Media take-up paper detection sensor

Head management sensor

2.1.2 Print Driving

During printing, print signals and control signals are issued to the printhead via the carriage relay PCB and Head relay PCB in order to discharge ink from the

nozzles.

On a printhead, six arrays of nozzles are provided in six arrays in a staggered pattern.

This printer uses a pair of printheads.

(The Y, PC, C, PGy, Gy, MBk, PM, M, Bk, R, G, B nozzles are mounted in this order from the left.)

Even-numbered nozzle data and odd-numbered nozzle data -- which are print signals -- are sent to each nozzle array in sync with the data sending clock and data

latch pulse timings.

Drive control signals include a Heat Enable signal and a Sub Heat Enable signal. The Heat Enable signal is used to discharge ink from nozzles. The Sub Heat Enable

signal is used to raise the printhead temperature to a suitable value to maintain the ink discharge amount constant.

2.2 Firmware

2.2.1 Operation Sequence at Power-on

The sequence of printer operations, from power-on to transition to online mode, is flowcharted below. The printer takes less than 1 minute to initialize itself(*).

* Excluding the times spent supplying inks and cleaning the printhead after leaving the printer for extended periods of time

J201

J202

Power supply

J102

J101

Media take-up PCB

J102

Media take-up motor

Media take-up on/off sensor

J101

Y, PC, C, PGY, GY, MBK