Canon Bjc4300 Service Manual

BJC-4300

SERVICE
MANUAL

Canon

Application

This manual has been issued by Canon Inc. for qualified persons to learn technical theory,
installation, maintenance, and repair of products. This manual covers all localities where the

Droducts

;oIlr locality.

are sold.

For this reason, there may be information in this manual that does not apply to

Corrections

This

manual could include technical inaccuracies or typographical errors due to improvements or
changes in the products. When changes occur in applicable products or in the content of this
manual. Canon

in the contents of this manual over a long or short period, Canon will issue a new editions of this
manual.

will

release technical information as the need arises. In the event of major changes

The following paragraph does not apply to any countries where such

providons

are

inconsistent with local law.

Trademarks

The product names and company names described in this manual are the registered trademarks of
the individual companies.

Copyright

This manual is copyrighted with all rights reserved. Under the copyright laws, this manual may not
be copied, reproduced or translated into another language. in whole or in part, without the written

consent of Canon Inc., except in the case of internal business use.

Copyright 0 1997 by Canon inc.
CANON INC.
BJ Products Technical Support Dept
16-1, Shimonoge 3-chome, Takatsu-ku, Kawasaki-shi, Kanagawa 213, Japan

This manual was produced on an Apple
Apple

LaserWriterTM16/600PS-J

with

4OOOJ

RIP. All graphics were produced with

All documents and all page layouts were created with

laser beam printer: final pages were printed on

MacintoshTU

Power Mac

MACROMEDIA@ FREEHANDa 5.55.

QuarkXPressT” 3.35.

6500/180

personal computer and

VarityperTu

5300

This manual is divided into four sections, and contains information required for

servicing the unit.

Part 7:

Safety and Precautions

This section tells you how to service the unit safely.
read it.

It is very important, so please

Part 2: Product Specifications

This section outlines and specification.

Part 3: Operating Instructions

This section explains how to operate the unit properly.
installation and service made.

Information required about

Part 4: Technical Reference

This section outlines the way the unit operates so you can understand it technically.

Part 5: Maintenance

This section explains how to maintain the unit.

adjustment for assembly, troubleshooting procedures, and wiring/circuit diagrams
are given.

Procedures for assembly/disassembly are not given in this manual.
See the illustrations in the separate Parts Catalog.

Descriptions of assembly/disassembly,

I

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Part 1: Safety and Precautions

1.

SAFETY PRECAUTIONS

1 .I Moving Parts

1.2 Ink Stains

1.2.1 Ink path

1.2.2 Ink mist

1.3 BJ Cartridge Heat-Up

2. MACHINE PRECAUTIONS

2.1 Handling BJ Cartridges

2.1 .l Unpacking the BJ cartridge

2.1.2 Preventing clogged nozzles

2.1.3 Power on/off

2.1.4 When not using the printer

2.1.5 Ink electroconductivity

2.2 Handling Ink Cartridges

2.2.1 Unpacking the ink cartridge

2.2.2 Preventing clogging

2.3 Printer Precautions

2.3.1 Spur deformation prevention

2.3.2 Static electricity damage prevention

2.3.3 Ink leakage prevention

2.3.4 Waste ink adhesion prevention

2.4 Scanner Precautions

2.4.1 Scanner Cartridge Protection

2.4.2 Scanning Precautions

3. PRECAUTIONS FOR SERVICE

3.1 EEPROM Data Precautions

3.2 Static Electricity Precautions

3.3 Disassembly and Reassembly Precautions

3.4 Self-Diagnosis

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Part 2: Product Specifications

1.

PRODUCT OUTLINE

1.1

Product Outline

1.2

Features
BJ Cartridge

1.3

1.3.1 Color BJ cartridge (Multi drop)

1.3.2 Black BJ cartridge

1.3.3 Photo BJ cartridge (Multi drop)

1.4

BJ Cartridge Container

1.5

AC Adapter

1.6

Consumables

1.6.1 BJ cartridges (Color, Black, Photo)

1.6.2 Ink cartridge (Color BJ cartridge)

1.7

Option

1.7.1 Color image scanner cartridge

1.7.2 Scanning holder

1.7.3 White calibration sheet

2. SPECIFICATIONS

2.1 Printer Specifications

2.2 Scanner Cartridge Specifications (Option)

II

2 -12
2 -13
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2 -24

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7

2.3 Paper Specifications

2.3.1 Paper size

2.3.2 Paper type (Recommended)

2.3.3 Print paper

2.3.4 Printing range

2.4 Interface Specifications

2.5 Character Code Tables

2.5.1 BJ mode

2.5.2 EPSON mode

Part 3: Operating instructions

I.

PRINTER SETUP

1 .I

Equipment Check

1.2 Printer Dimensions

1.3 Setup Procedure

1.3.1 Connecting the interface cable

1.3.2 Connecting the AC adapter

1.3.3 Turning on the printer

1.3.4 Installing the cartridge

1.3.5 Replacing the ink cartridge

1.3.6 BJ cartridge container

1.4 Turning the Printer On/Off

1.4.1 Turning the printer on

1.4.2 Turning the printer off

1.5 Paper Settings

1.6 Banner Print

1.7 Name of the Parts and Their Functions

2. TRANSPORTING THE PRINTER

2.1 Carrying the Printer

2.2 Transporting the Printer

3. PRINTER SERVICING FUNCTIONS
Error Indications

3.1
Function Settings

3.2

3.2.1 Setting the default setting mode

3.2.2 BJ setup utility program
Cleaning the BJ Cartridge

3.3
Self-Test Printout

3.4

3.4.1 Demonstration print

3.4.2 Printer status information print

3.4.3 ASCII character print (ripple pattern)

3.4.4 Nozzle check pattern
Hexadecimal Dump Test Printout

3.5

3.6

EEPROM Reset

3.6.1 EEPROM Reset

3.6.2 Printing the EEPROM data

4-

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3

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4

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4

Part 4: Technical Reference

1.

1

OVERVIEW

1 .I Printer Diagram

1.2 Initial Flowchart

1.3 Print Signal Flow

1.4 Print Drive

1.4.1 Printing drive control

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438

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444 6.
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448
448

1.5 Power Off Flowchart
FIRMWARE

2.

2.1

Interface

2.1 .I Compatible mode

2.1.2 Nibble mode

2.1.3 ECP mode

2.2 720 dpi Printing/Smoothing Feature

2.2.1 Canon extension mode

2.2.2 Emulation mode

2.3 Printing Modes

2.3.1 Printing mode

2.3.2 Photo print mode

2.3.3 Multi drop print mode

2.4 Optimum Printing Direction Control

2.5 Automatic Emulation Switching

2.6 Ink Smear Control

2.7 Head Overheating Protection Control

2.8 Auto Power On/Off
PRINTER MECHANICAL SYSTEM

3.1

Overview

3.1.1 Mechanical components

3.2 BJ Cartridge

3.2.1 Black BJ cartridge structure

3.2.2 Color BJ cartridge structure

3.2.3 Photo BJ cartridge structure

3.2.4 Bubble head unit structure

3.3 Purge Unit

3.3.1 Purge unit functions

3.3.2 Purge unit structure

3.4 Carriage

3.4.1 Carriage functions

3.4.2 Carriage structure

3.5 Paper Feed

3.5.1 Outline of the paper feed

3.5.2 Auto feed/Manual feed

PRINTER ELECTRICAL SYSTEM

4.1

Overview

4.2 Logic Section

4.2.1 Logic section block diagram

4.2.2 Logic section components

SENSOR FUNCTIONS

5.1 Pick-up Roller Sensor

5.2 Paper End Sensor

5.3 Home Position Sensor (Purge Sensor)

5.4 Temperature Sensor

5.5 Head Temperature Sensor

5.6 Waste Ink Amount Detection
SCANNER CARTRIDGE

6.1 Scanner Cartridge Overview

6.1.1 Block diagram

6.2 Scanner Cartridge Structure

6.3 Signal Contacts

6.4 Scan Mode

6.5 Calibration

IV

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Part 5: Maintenance

1.

MAINTENANCE

1.1 Parts for Regular Replacement

1.2 Consumables

1.3 Periodic Maintenance

2 SERVICING TOOLS

2.1 List of Tools

3. GREASE APPLICATION

4. DISASSEMBLY AND REASSEMBLY

4.1 Disassembly and Reassembly

4.2 Disassembly and Reassembly Cautions

4.2.1 Waste ink absorber installation

4.2.2 Carriage guide frame installation

4.3 Logic Board and Waste Ink Absorber Replacement

4.3.1 Logic board replacement cautions

4.3.2 Cautions afler replacing the waste ink absorber

5. ADJUSTMENTS

5.1 Adjustment Point

5.2 When Adjustment is Required

5.2.1 Tools required for adjustment

5.3 Adjustment Procedure

5.3.1 Preparation

5.3.2 Adjustment

6. TROUBLESHOOTING

6.1 Troubleshooting

6.1.1 Overview

6.1.2 Troubleshooting cautions

6.2 Error Condition Diagnosis

6.2.1 Initial self check

6.2.2 Error recovery

7. LOCATION & SIGNAL ASSIGNMENT

7.1 Logic Board

8. CIRCUIT DIAGRAMS

6.1 Parts Layout

6.1.1 Logic board

CSUtiOnS

V

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Figurel- 1
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Figure 1-13
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Figure
Figure2­Figure2- 2
Figure2- 3
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Figure2- 6
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Figure2- 8
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Figure2- 10
Figure
Figure
Figure2- 13
Figure2- 14
Figure2- 15
Figure3­Figure3- 2
Figure3- 3
Figure3- 4
Figure3- 5
Figure3- 6
Figure3- 7
Figure3- 8
Figure3- 9
Figure3­Figure
Figure3- 12
Figure3- 13
Figure3- 14
Figure3- 15
Figure3- 16

Figure3- 17
Figure
Figure

1-16

2- 11
2- 12

10

3- 11

3- 18
3- 19

0

Moving Parts of the Printer
Ink Path
Ink Path of the BJ Cartridge
Ink Mist
BJ Cartridge Aluminum Plate
Removing the BJ Cartridge Protector

BJ

Cartridge
Removing the Ink Cartridge Cap
Ink Cartridge Protection
Spurs and Spur Cleaner
Carriage Ribbon Cable’s Electrical Contacts
Capping Position
Scanner Cartridge
Scanning Holder
Electrical System of Printer
How to Release Plastic Hooks

1

Printer Exterior
Color BJ Cartridge (Multi Drop)
Black BJ Cartridge

Photo BJ Cartridge (Multi Drop)
BJ Cartridge Container

AC Adapter

BJ Cartridges

Ink Cartridges
Scanner Cartridge
Scanning Holder

Printing Area

Printing Area (Envelope)
Timing Chart (Compatible Mode)
Timing Chart (Nibble Mode)
Timing Chart (ECP Mode)

1

Packaging

Printer Dimension

Connecting the Interface Cable

Connecting the DC Power Cord

Removing the BJ Cartridge Protectors

BJ Cartridge Handling Precautions

Cartridge Installation

Removing the Ink Cartridge

Removing the Ink Cartridge Cap

BJ Cartridge Container

Do not turn off the printer without pressing the POWER button first

Banner Print

Name of the Parts and Their Functions

Name of the Parts and Their Functions

Paper Thickness Lever

Fastening the Carriage

Control Panel

BJ Setup Utility Program (Sample)
Demonstration Print (Sample)

D

VI

Page
3 -22
3 -23
3 -23
3 -24
3 -26

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Figure 3-20 Printer Status Information Print (Sample)
Figure 3-21
Figure 3-22 Nozzle Check Pattern
Figure 3-23
Figure 3-24
Figure4- 1
Figure4- 2 Initial Flowchart
Figure4- 3 Printing Signal Flow
Figure4- 4
Figure4- 5 Printing Signals
Figure 4- 6 Power off Flowchart
Figure4- 7
Figure4- 8 Interface Timing (Nibble Mode)
Figure4- 9 Interface Timing (ECP Mode)
Figure4- 10 720 dpi Printing/Smoothing Feature
Figure
Figure4- 12 Black BJ Cartridge Structure
Figure4- 13 Color BJ Cartridge Structure
Figure4- 14 Photo BJ Cartridge Structure
Figure4- 15 Bubble Jet Nozzles (Partial View)
Figure4- 16
Figure4- 17
Figure4- 18
Figure4- 19

Figure 4-20 Color/Photo BJ Cartridge Block Diagram
Figure
Figure4- 22 Carriage

Figure 4-23

Figure4- 24

Figure4- 25 Paper Feed Mechanism

Figure 4-26 Paper Pick-up Mechanism
Figure 4-27 Printer Electrical System
Figure 4-28 Logic Board Block Diagram

Figure4- 29 Printer Block Diagram

Figure 4-30 Motor-Driving Circuit

Figure4- 31

Figure 4-32 Scanner Cartridge

Figure 4-33

Figure4- 34 Scanner Cartridge

Figure 4-35 Contact Pad Layout

Figure5- 1

Figure5- 2

Figure5- 3

Figure5- 4 Waste Ink Absorbers

Figure5- 5 Head Gap Adjustment

Figure5- 6 Adjustment Preparation

Figure5- 7 Head Gap Adjustment (1)

Figure5- 8 Head Gap Adjustment (2)

Figure5- 9 Logic Board

Figure5- 10 Logic Board (Top View)

Figure

4- 11

4-2 1

5- 11

ASCII Character Printout (Sample)

Hexadecimal Dump Test Printout (Sample)

Sample Printout of EEPROM Data

Printer Diagram

Printing Sequence (Black BJ CartridgelHQ Mode)

Interface Timing (Compatible Mode)

Printer’s Mechanical Configuration

Nozzle Arrangement
Contact Pad
Black BJ Cartridge Block Diagram
Color (Multi Drop)/Photo (Multi Drop) BJ Cartridge Block Diagram

Purge Unit

Paper Thickness Adjustment

Paper Feed Motor Drive Transmission

Sensors

Block Diagram

Grease Application Points

Waste Ink Absorber Installation

Carriage Guide Frame

Logic Board (Bottom View)

VII

Page
3 -10 TABLE
3 -14 TABLE
3 -16 TABLE
3 -16 TABLE
3 -21
3 -24 TABLE
3 -25 TABLE
4 -13 TABLE
4 -14 TABLE
4 -24 TABLE
4 -26 TABLE
4 -29 TABLE

443 TABLE

446
447

5-

6 TABLE

TABLE

TABLE4-

TABLE4-

3­3­3­3­3­3­3­4­4­4­4­4­4-

5-

QUICK REFERENCE FOR

1

ERROR INDICATIONS

2

DEFAULT

3

DEFAULT SETTING MODE FUNCTION

4

SELF-TEST PRINT MODES

5

HEXADECIMAL DUMP TEST PRINT

6

DEFAULT SETTING WHEN

7

PRINTING MODES AND HEATING METHODS (1)

1

PRINTING MODES AND HEATING METHODS (2)

2

LIST OF BJ CARTRIDGE SIGNAL CONTACTS

3

HEAD INSTALLATION STATUS AND SIGNAL DETECTION

4

INK CONSUMPTION DURING CLEANING (AS A STANDARD)

5

LIST OF SENSOR FUNCTIONS

6

LIST OF SCANNER CARTRIDGE SIGNAL CONTACTS

7

6

LIST OF SCAN MODE

TOOLS REQUIRED FOR HEAD GAP ADJUSTMENT

1

SETrING

SElTlNG

MODES

RESETrING

SETrINGS

THE EEPROM

VIII

BJC-4300

1 .l Moving Parts

The moving

roller, carriage, slow down gear, paper feed roller, pressure roller, eject roller, spurs.
and pick-up roller. The first three parts above are driven by the carriage motor while
the latter are driven by the paper feed motor. Avoid getting hair, clothing, personal
ornaments, etc., caught in these moving parts.

Also note that the spurs are made of metal and have sharp edges. Avoid touching these

spurs with bare hands.

Part 1: Safety and Precautions

parts of the printer are shown below. They include the carriage belt, idler

Paper Feed Motor
Slow Down Gear

Pressure Rollers

Carriage

I

\

baper

Feed Roller

Figure l-l Moving Parts of the Printer

l-l

7:

Safety and Precautions

1.2 Ink Stains

1.2.1 Ink path

Do not touch the ink path while servicing as the ink can stain hands, work table,
clothing, etc.
The ink path consists of

jet receiving section, and waste ink absorber.

In the case of color
part of the ink path.

the E%J

cartridge nozzles, head cap, head wiper, maintenance

J3J

cartridges, the cartridge’s ink outlets and joint pipes are also

BJC-4300

I

Although the ink is non-toxic, it contains organic solvents.
Isopropyl alcohol 67-63-0, glycerin 56-81-5, and ethyleneglycol 107-21-l
in black ink and isopropyl alcohol 67-63-O in color inks.
your eyes and mouth. If any ink should get into your eyes, wash out
plenty of water and consult a doctor.
consumed, consult a doctor immediately.
Give the doctor the information on the BJ cartridge label. Since the ink
contains dyes, any ink stains on clothing, etc., are permanent.

Caution!

BJ Cartridge

Head Wiper

Do not get ink

wit1

If a large amount of the ink is

I

1

it

Figure 1-2 Ink Path

BJC-4300

Part 1: Safety and Precautions

Black BJ Cartridge

Color BJ Cartridge

Figure 1-3 Ink Path of the BJ Cartridge

1.2.2 Ink mist

The

E3J

cartridge ejects ink onto the paper. During prolonged or heavy-duty use of the
printer, the small amounts of ink mist which splatter off the paper during printing can
contaminate the inside of the front cover and platen.
Clean any contaminated parts with a soft moist cloth.

contaminate the back of the paper and dirty hands and clothing while servicing.

Ink in such areas can

Figure 1-4 Ink Mist

1-3

BJC-4300

1.3 BJ Cartridge Heat-Up

Do not touch the BT cartridge’s aluminum plate. The aluminum plate heats up during

prtnting

overheat also if printing is continued even after the cartridge has run out of ink.

and becomes particularly hot during prolonged and continuous

printing.

It can

NOTE

a

Aluminum Plate

/

Caution! High Temperature!

Figure l-5 BJ Cartridge Aluminum Plate

The printer has a protective mechanism when the FM cartridge heats up.
The protective mechanism is activated when the head temperature (diode)

sensor in the BJ cartridge senses a certain temperature.

Protection level 1:

This level prevents the user from touching the bubble jet head’s hot

aluminum plate when the bubble jet head is replaced. When the user
tries to manually move the carriage to the
position, the beeper will sound three times and the cartridge cannot be
replaced. Depending on the protection level, the user may even be
prevented from replacing the cartridge until a set period of time passes.

Protection level 2:

If a still higher temperature is detected, the carriage is returned to the
home position for 3.5 seconds to bring down the temperature. After the
resting period, printing
to lower the bubble jet head’s temperature.

Protection level 3:

If the temperature continues to increase, a head temperature error
occurs. This stops the printing operation. If this still does not lower
the head temperature, the sensor is deemed faulty and a head
temperature sensor error

will

resume. This continues for over 20 seconds

will

be indicated.

cartrIdge

replacement

is stopped by a head temperature

sensor error, follow the troubleshooting procedures in Par?

6.TROUBLESHOOTlNG

(page

5-10).

1-4

errc~r

or a head

5;

BJC-4300

2.1 Handling BJ Cartridges

2.1.1 Unpacking the BJ cartridge

Part 1: Safety and Precautions

Do not unpack the BJ cartridge until it is ready to be used.
cartridge in the printer, remove the cap protecting the nozzles and gently peel off the
protective tape.

Before installing the BJ

1

Color BJ Cartridge

Black BJ Cartridae

Photo BJ Cartridge

2

Tape

Figure 1-6 Removing the BJ Cartridge Protector

2.1.2 Preventing clogged nozzles

Never touch or wipe the nozzles
To prevent dirt or dried ink from clogging the nozzles
immediately in
peeling off the protective tape.
Do not attempt to reuse the cap or tape as doing so can cause print defects.
Do not store the color BJ cartridge with the ink cartridge removed.

BJ cartridges cannot be disassembled, reassembled, or washed.

the

printer or in the

with

tissue paper, etc. to prevent them from

cartridge

however.install

container after removing the cap and

the BJ cartridge

CIogging.

Clogged nozzles can cause white streaks across printed areas

NOTE

a

Black BJ Cartridge

problem persists even after the ink cartridge is cleaned by the printer,
replace the BJ cartridge.

Color BJ Cartridge

Figure 1-7 BJ Cartridge

1-5

.

If this

Photo BJ Cartridge

1: Safety and Precautions

2.1.3 Power on/oft

When

the printer is turned off
printer automatically caps the
prevent ink leakage.
If the DC power cord is disconnected before the printer is turned off with the

button, the

start up the printer as usual, then turn off the printer with the

nozzles will not be capped. In such cases, reconnect the DC power cord,

If the nozzles are not capped, the ink may leak and dry out causing the

nozzles to clog.

2.1.4 When not using the printer

Keep the BJ cartridge installed in the printer even when the printer is not in use. Also
keep it installed while carrying, transporting, or storing the printer. If the
cartridge’s package has been opened but the cartridge is not to be installed
immediately, store the cartridge in the cartridge container.

If the

ELI

causing the nozzle to clog.

BJC-4300

with

the

POWER button

ElJ

cartridge’s nozzles for their protection and to

cartridge is removed from the printer, ink may leak and dry out

and auto power off function, the

POWER

POWER button.

E%J

2.1.5 Ink electroconductivity

The ink in the

mechanical parts, use a damp paper towel, etc., to wipe clean. If it leaks into the

printer’s electrical components, use tissue paper, etc., to wipe clean completely; If ink
gets into the IC chips on the PCB and it is

ESJ

cartridge is

Never turn on the printer if ink has leaked inside the printer. It may

damage

the circuitry.

electroconductive.

difflcult

If ink leaks into the printer’s

to clean, replace the PCB.

l-6

BJC-4300

2.2 Handling Ink Cartridges

2.2.1 Unpacking the ink cartridge

Part 1: Safety and Precautions

Do not unpack the ink cartridge until it is ready to be used.
color

E?J

cartridge, remove the cap covering the ink outlets.

Cap

\

Before installing it in the

Figure

l-8

Removing the Ink Cartridge Cap

2.2.2 Preventing clogging

To prevent poor ink suction due to clogging of the joint pipes, never touch the ink

cartridge’s ink outlets. After removing the cap from the ink cartridge. promptly install
the ink cartridge in the BJ cartridge to prevent the nozzles from clogging due to dried­out ink and dust, etc. Do not remove an ink cartridge from
replacing.

Color Ink Cartridge

Yellow Ink Outlet

Magenta Ink Outlet

(Contact Section

of the Joint Pipe)

Black Ink Cartridge

‘Black Ink Outlet

(Contact Section

of the Joint Pipe)

E3J

cartridge unless

Figure 1-9 Ink Cartridge Protection

1-7

2.3 Printer Precautions

2.3.1 Spur deformation prevention

Do not deform the tips of the spurs.
The spurs come into contact with the paper after printing. As the actual contact
surface is small, any ink adhering to the spurs is minute and wiped off by the spur
cleaners. Therefore any ink on the spurs is not enough to contaminate the paper as it
passes. However, if the spurs become deformed, their contact surface with the paper
increases, causing more ink to adhere to each spur. Since the spur cleaner is unable
to wipe off all the ink, a line of dotted ink may mask the printed paper.

BJC-4300

Figure l-10 Spurs and Spur Cleaner

2.3.2 Static electricity damage prevention

The static charge that accumulates in your body from clothing can damage electrical

components. Therefore never touch the electrical contacts of the carriage ribbon cable
and

E3J

cartridge.

Figure l-11 Carriage Ribbon Cable’s Electrical Contacts

1-8

BJC-4300

2.3.3

Do not pack, transport, or store the printer without a BJ cartridge installed. Without
a BJ cartridge installed, the ink in the purge unit will leak and disperse inside the
printer. When packing the printer, make sure the carriage is at the capping position

(the

The EU cartridge’s nozzles are capped automatically when the power is turned off with
the POWER button.
with the POWER button. Otherwise, the nozzles will not be capped.

Ink leakage prevention

right end of the platen).

Do not disconnect the DC power cord before turning off

Part

1: Safety and Precautions

the

printer

Figure 1-12 Capping Position

2.3.4 Waste

ink adhesion prevention

When the printer is turned off with the POWER button, the printer automatically drives

the gears in the purge unit

on the gears. If waste ink remains on

unit’s operation.

Do not disconnect the DC power cord before turning off the printer with the POWER

button.

press the POWER button to turn off

cord.

OtherwIse,

the printer will not drive the gears to remove the waste ink. Always

(the

maintenance jet receiving section) to remove waste ink

the

gears, it may dry out and affect

the

printer before disconnecting the DC power

the

purge

1-9

7:

Safety and Precautions

2.4 Scanner Precautions

2.4.1 Scanner Cartridge Protection

Do not touch the scanning head of the scanner cartridge as it may affect the quality

and ability of the scanning operation.
with a soft damp cloth and wipe off any excess moisture with a soft dry cloth or paper.
To avoid damage caused by miscontact or static charge, do not touch the contact

terminals. Scanner cartridge cannot be disassembled, reassembled, or washed.

BJC-4300

When cleaning the scanner lens, wipe gently

Scanning

head

Contact terminals

Figure 1-13 Scanner Cartridge

2.4.2 Scanning Precautions

The scanning document should be placed between the scanning holder to prevent

staining or scratching. Do not feed thick or bent paper. Also direct feeding of thin
paper or comer-folded paper may result in paper jamming.

Figure 1-14 Scanning Holder

l-10

BJC-4300

3.1 EEPROM Data Precautions

The printer keeps track of various settings, the total waste ink amount, and the total

sheets printed with the black, color and photo EU cartridges. This data is stored in the
EEPROM on the logic board. Note the following precautions during servicing:

Pari 1: Safety and Precautions

1) Before servicing

Check the EEPROM data with a test print. The total sheets printed can give you an
idea of how much the printer has been used.

2)

During

Always visually check the waste ink amount absorbed by the waste ink absorbers

and replace them when necessary as explained in

Absorber Replacement Cautions (page 5-5).

If the waste ink absorbers are not visually checked regularly, they may reach or
exceed their full capacity before “waste ink full” is detected. The waste ink may
therefore start leaking.
The memory data for the replacement logic board (EEPROM) is not defined.
Therefore, after replacing the logic board (and EEPROM), reset the total waste ink

amount to zero by clearing the data.

logic board

(EEPROMI

replacement

Part

5: 4.3 Logic Board and Waste Ink

3) After

waste

ink absorber replacement

After replacing the waste ink absorbers, reset the total waste ink amount to zero by
clearing the EEPROM data.

After the EEPROM is reset, the data it contained cannot be printed out

with a

test printout.

execute test printout before resetting the EEPROM.
When the stored data is reset, the various settings, the total count of
printed sheets, and the total waste ink amount will all be reset. The total
sheets printed and waste ink amount cannot be input using the control
panel.

Immediately after the printer is started, it keeps track of the estimated

waste ink amount based on the usage conditions. To prevent ink leakage
when the waste ink amount exceeds the waste ink absorption capacity, the

printer stops printing and indicates an error when the waste ink
absorption capacity is close to being full.
For details on checking the EEPROM data with a test printout and for
clearing the data, see Part 3: 3.6 EEPROM Reset(page
If the printer stops operating in the case of a waste ink full error, follow the
countermeasures described in Part 5: 6. TROUBLESHOOTING (page

If you want to check the stored data, be sure to

325).

5-70).

l-11

BJC-4300

3.2

Static Electricity Precautions

‘Ike

static charge accumulated in the body from clothing can damage electrical
components. To dispel the build-up of static electricity, touch a metallic object that is
grounded. Be sure to do this before disassembling the printer for servicing. Before
dispelling your static charge build-up, do not touch the electrical contacts on the logic
board and on the carriage ribbon cable (see Figure
is connected to the logic board.

l-l

1)

while the carriage ribbon cable

Electrostatic Discharge!

\

AC

Adapter

Figure 1-15 Electrical System of Printer

1-12

BJC-4300

3.3

The printer is comprised of a large number of plastic parts. When disassembling the

printer, take care not to break or bend plastic hooks.

Part 1: Safety and Precautions

Disassembly and Reassembly Precautions

Since some plastic parts contain glass fibers for extra rigidity and
precision, but since their viscosity is low. plastic hooks can break easily

when excessive force is used. Use a precision screwdriver, and do not pull

plastic hooks with excessive force while unhooking them.

Never apply excessive force

when releasing a hook.

Figure 1-16 How to Release Plastic Hooks

3.4

Self-Diagnosis

The printer has a self-diagnosis feature to detect hardware defects. The results of the

self-diagnosis are indicated by the indicators and the beeper. For details, see

3.1

Error

indications

(page 3-

14).

Part

3:

1-13

This page intentionally left blank

BJC-4300

1-14

BJC-4300

1.1 Product Outline This

realization of high image printing through the implementation of the
concept.

This printer achieves high image printing by adopting “drop modulation technology” in

the color
The expanded

capabilities. The printer can also be used as a compact color scanner when the optional
scanner

All the function settings are

performed with the bidirectional
response)
This printer uses a built-in AC adapter. This is a small and light weight personal color
printer with high performance capabilities.

Part

2: Product Specifications

printer is a value added, full color bubble jet desktop printer that enjoys the

PhotoRealism

ELJ

cartridge and the photo

printing

cartridge

environment has allowed the printer to have banner printing

is installed in the carriage.

easfly

E3J

cartridge.

set by the personal computer. The operation is easily

Centronics

interface (effective only for the device ID

Cut Sheet Feeder

SJ

Cartridge Containe

Paper Output Tray

Paper Output Tray Extension

Front Cover

Parallel lntertace Connector

Guide

Manual Feeding Slot

Figure 2-1 Printer Exterior

2-1

2:

Product Specifications

1.2

Features

1.

Compact (desk-top size)
Dimensions: 383 mm W x 231.6 mm D x 203 mm H

Weight: Approx. 3.5 kg (7.7 lbs) (including color BJ cartridge)

2.

Built-in AC adapter employs a high-current capable switching power supply, power
saving control is not performed with print duty.)

3.

Automatic power control (auto power

4.

High quality printing of 720 x 360 dpi
the special printer driver)

5.

tie

standard built-in printer control modes

LQ

mode (EPSON LQ-2550 emulation)

BJ mode (IBM Proprinter X24E emulation)

[Canon extended mode is supported when using the canon printer driver.1

6.

User replaceable BJ cartridge and adopting drop modulation technology color/
photo BJ cartridge
Color BJ Cartridge Drop modulation technology has been adopted.

(Multi drop) It has separate ink cartridges

136 nozzles in a vertical line: 64 nozzles

(Y, M,

Cl.

Black BJ Cartridge Contains the black ink and the head with 128 nozzles.

Depending on each sales territory, it is not packed with the

printer, but is available separately.
Photo BJ Cartridge Drop modulation technology has been adopted.
(Multi drop) It has integrated ink cartridges with the head with 136 nozzles

in a vertical line; 64 nozzles
Black ink cartridge Black ink cartridge for the color &I cartridge.
Color ink cartridge

(*Previous color and photo BJ cartridges that do not use drop modulation
technology may be used, however the printing quality will be the same as when drop
modulation technology is not used.)

7.

Device ID compatible to “Plug and Play”
(Responds only to the device ID/status of nibble mode)

8.

Banner printing capabilities.

9.

Capable of the double paper feeding with the leverless cut sheet feeder and manual
feed.

(It is possible to feed paper manually even when the paper has been set on the

cut sheet feeder.)

10. Photo quality printing using the Photo kit option and the photo printing special
driver.

11. Cartridge container packed with the printer.

12. High quality photo image input using the option color image scanner cartridge.

T&color (Y,

on/ofiJ

(in

both monochrome and black when using

(Bk) (Y,

M,

C!)
(Bk)

(Bk)

+ 24 nozzles x 3

M, C) ink cartridge for the color BJ cartridge.

BJC-4300

and the head with

+ 24 nozzles x 3

(y,

M,

C).

2-2

BJC-4300

1.3 BJ Cartridge

1.3.1 Color BJ cartridge (Multi Drop)

Part 2: Product

SDecifications

The disposable color EJ cartridge is comprised of a 136.nozzle print head and two

replaceable ink cartridge (black and color).When the ink runs out or more than 6
months elapse after the cartridge has been removed from its package, or if the print
quality does not improve even after cleaning the head over five times, replace the ink
cartridge.
Furthermore, if the print quality does not improve following replacement of the ink
cartridge and after cleaning is performed over 5 times, replace the

the three color Inks are integrated, when one ink color runs out, the entire color ink

cartridge must be replaced.

When drop modulation technology is used, small dots are printed in low density areas

to

mtnimtze

technology allows the printer to retain its printing speed and achieve high quality
printing.
The first 24 nozzles are for yellow ink, the second 24 for magenta, the third 24 for
cyan, and the remaining 64 nozzles are for black. A total of 136 nozzles are lined in a
vertical.

About 160 sheets (in HQ mode with 1500.character pattern) can be printed with the

black ink and about 90 sheets (in HQ mode, 7.5% duty per color pattern) with the
color inks. On plain paper and transparencies, 360 dpi/720 dpi high-resolution
printing is available.

the graininess and large dots are used for high density areas. Using this

EIJ

cartridge. Since

Figure 2-2 Color

Cartridge (Multi Drop)

Bj

1.3.2 Black BJ cartridge

The disposable BJ cartridge is used for ultra-high-speed mono-color printing. Its

head has a 128 nozzle.
When the ink runs out or more than 6 months elapse after the cartridge is removed
from its package or if the print quality does not improve even after cleaning the head
over five times, replace the
This cartridge is capable of printing about 700 sheets (in HQ mode with 1500

characters per page).

EIJ

cartridge.

Figure 2-3 Black BJ Cartridge

2-3

BJC-4300

1.3.3 Photo BJ Cartridge (Multi Drop)

he disposable photo

136.nozzle

When the ink runs out or more than 6 months elapse after the cartridge has been

removed from its package, or if the print quality does not improve even after cleaning
the head over five times, replace it with a new photo
inks are integrated, when one ink color runs out, the entire photo

be replaced. Adopting drop modulation technology, the photo BJ cartridge prints

small dots in low density areas to minimize the graininess and large dots in high
density areas to retain its printing speed and achieve high quality printing.

The first 24 nozzles are for yellow ink, the second 24 for magenta, the third 24 for

cyan, and the remaining 64 nozzles are for black. A total of 136 nozzles are lined in a

vertical. About 50 sheets (in Photo mode) can be printed.

Use high quality special paper and Canon original printer driver for printing.

print head and four ink cartridges.

J3J

cartridge used for printing color photographs, integrates a

ESJ

cartridge.

Since the four color

J3J

cartridge must

Figure 2-4 Photo BJ Cartridge (Multi Drop)

1.4

BJ Cartridge Container

The

cartridge container is for storing unused
protect the head from damage. When storing a
to close the cover. When storing a color EJ cartridge, do not remove the ink cartridges.

The BJ cartridge containers can be linked together

E?J

cartridges black, color and photo to

FIJ

cartridge in this container, be sure

Figure 2-5 BJ Cartridge Container

1.5 AC

Adapter

The

AC adapter supplies DC power (5 VDC and 24 VDC) to operate the printer.

Figure 2-6 AC Adapter

2-4

BJC-4300

1.6 Consumables

1.6.1 BJ cartridges (Color, Black, Photo)

Part 2: Product Specifications

Replacement BJ cartridges are identical to those included with the printer.

Color BJ Cartridge

Black BJ Cartridge

Photo BJ Cartridge

Figure 2-7 BJ Cartridges

1.6.2 Ink cartridge (Color BJ cartridge)

Replacement ink cartridges are
and black ink cartridge. Either cartridge can be used for half a year after the seal is
opened.

Numbers of sheets printed

Color ink cartridge: Approximately 90 sheets

Black ink cartridge: Approximately 160 sheets

Color Ink Cartridge

the

same as those installed in the color ink cartridge

(HQ

mode) (7.5% duty per color pattern)

[HQ

mode) (1500 characters)

Black Ink Cartridge

Figure 2-8 Ink Cartridges

2-6

1.7 Option

1.7.1 Color Image Scanner Cartridge
This printer can be used as a color scanner when a scanner cartridge is installed.

The scanner cartridge is a replaceable scanner unit that uses a one-line 128 pixel

CCD. The scanner separates each of the three RGB colors of the LED by scanning
the same line three times. The color image is output by 8.bit signals (256 gradation in
each RGB primary color). For a monochrome image, the image is lit with a green LED
and scanned once to output either a 8.bit or a-bit signal. The maxtmum scanning
resolution is 360 dpi x 360 dpi.
To stabilize LED output, the printer preheats and warms the scanner cartridge when
the installed scanner cartridge remains at rest or scanning is not performed.

White calibration must be conducted using the white calibration sheet when white
balance and shading correction is performed. White balance correction is needed to

correct the uneven density in the horizontal direction caused by variation of LED.

Shading correction is needed to correct the uneven distribution of light transmitted
through the center and the periphery of the lenses. Density variation between each
vertical scanning line caused by the varying sensitivities of the CCD pixels, is also

corrected.
The calibration data is retained unless there is an ambient temperature change of

+5”C or the cartridge is removed and reinstalled.

Also for monochrome printing, edge emphasis processing is performed.

BJC-4300

Figure 2-9 Scanner Cartridge

2-6