Canon 2160B002 2-26, 2.3.2.5 Purge Unit

Chapter 2

2-26

b) Nozzle structure

Ink supplied from the ink tank is filtered by a mesh ink filter, and the supplied to the nozzles.

Ink is supplied from the shared ink chamber to the nozzles. When the head driving current is applied to the

nozzle heater, ink boils and form bubbles so that ink droplets are discharged from the nozzles.

F-2-14

2.3.2.5 Purge Unit

2.3.2.5.1 Functions of Purge Unit

0013-8022

To maintain high print quality, the purge unit performs maintenance of the nozzles o the printhead.

The purge unit supports a capping function, cleaning function, and ink supply function.

a) Capping function

The capping function presses the cap of the purge unit against the face plate on the nozzle section of the

printhead to prevent nozzle drying and dust adhesion.

Capping is performed when printing is complete, at the start of the suction operation, and when switching to the

standby state due to an error.

The capping function also establishes the ink passage between the printhead and purge unit.

b) Cleaning function

The cleaning function restores the printhead to the state where ink can be easily discharged from nozzles. This

function includes the following three types of operations.

- Wiping operation

This operation is performed to remove paper fibers and dried ink from to the face plate.

- Pumping operation

This operation is performed to remove ink from the nozzles and fill the nozzles with fresh ink.

- Maintenance jet operation

This operation is performed to spray ink from the nozzles to the cap, borderless ink jet tray, an paper to remove

bubbles in the nozzles and dust and other foreign particles.

c) Ink supply function

The suction pump of the purge unit operates together with the ink supply valve to supply ink to the printhead

during the initial filling and ink level adjustment.

Resin

Sillicon plate

Heater

Shared ink chamber

Heater

Contents

Main Page Symbols Used Symbol Description Page Page Page Page Page Page Page 1.5 Names and Functions of Components........................................................ 1-18 1.1 Product Overview 1.1.1 Product Overview 1-2 1.2 Features 1.2.1 Features 1.2.2 Printhead 1-3 1.2.3 Ink Tank 1.2.4 Cutter unit 1.2.5 Roll Holder 1-4 1.2.6 Stand [A] [B] 1-5 1.2.7 IEEE1394 (FireWire) Board 1.2.8 Consumables Page 1-7 1.3 Product Specifications 1.3.1 Product Specifications 1-8 1-9 1-10 1.4 Detailed Specifications 1.4.1 Print Speed and Direction 1-11 Plain Paper/ Recycled Paper 1-12 1-13 1-14 1-15 1-16 1-17 1.4.2 Interface specifications 1-18 1.5 Names and Functions of Components 1.5.1 Front 1-19 1.5.2 Rear 1-20 1.5.3 Carriage 1-21 1.6 Basic Operation 1.6.1 Operation Panel 1-22 1.6.2 Main Menu 1-23 1-24 1-25 1-26 1-27 1-28 1-29 1-30 1-31 1-32 Setting Item 1-33 Setting Item 1-34 1-35 press the[ ] button. Choose [OK] to restore the network settings to the default values. 1-36 1-37 1-38 1-39 1-40 1.7 Safety and Precautions 1.7.1 Safety Precautions 1.7.1.1 Moving Parts 1-41 1.7.1.2 Adhesion of Ink 1-42 1.7.1.3 Electric Parts 1-43 1-44 1.7.2 Other Precautions 1.7.2.1 Printhead 1-45 1.7.2.2 Ink Tank 1-46 1.7.2.3 Handling the Printer 1-47 1-48 1.7.3 Precautions When Servicing Printer 1.7.3.1 Notes on the Data Stored in the Printer 1.7.3.2 Confirming the Firmware Version 1.7.3.3 Precautions against Static Electricity Page Page Page Page 2-1 2.1 Basic Operation Outline F-2-1 2.1.1 Printer Diagram Shown below is a printer diagram. Chapter 2 2.1.2 Print Signal Sequence 2-3 2.1.3 Print Driving 2-4 BlockNo. Printheadnozzle No. F-2-3 Thepattern is repeated until 2560 nozzles is reached. 2-5 Chapter 2 2-6 2.2 Firmware 2.2.1 Operation Sequence at Power-on 2-7 2.2.2 Operation Sequence at Power-off 2-8 2.2.3 Print Control Printing Modes 2-9 2-10 2-11 2-12 2-13 2-14 2.2.4 Print Position Adjustment Function 2.2.5 Head Management 2.2.6 Printhead Overheating Protection Control 2-15 2.2.7 Pause between Pages 2.2.8 White Raster Skip 2.2.9 Sleep Mode 2-16 2.3 Printer Mechanical System 2.3.1 Outline 2.3.1.1 Outline 2-17 2.3.2 Ink Passage 2.3.2.1 Ink Passage 2-18 2-19 2.3.2.2 Ink Tank Unit 2-20 F-2-9 2-21 2-22 2.3.2.3 Carriage Unit 2-23 2-24 2-25 2.3.2.4 Printhead 2-26 2.3.2.5 Purge Unit Resin Sillicon plate Heater Shared ink chamber Heater 2-27 Details of the cleaning function are shown in the table below. Chapter 2 2-28 Cleaning operation timings are as follows. 2-29 *1: Quantities of ink consumption by nozzle train 2-30 2-31 Advance notice of replacement 47,500times Service call 50,000times 2-32 2.3.2.6 Maintenance Cartridge 2-33 2.3.2.7 Air Flow 2.3.3 Paper Path 2.3.3.1 Outline 2-34 2-35 2.3.3.2 Paper Path Page 2-37 2.4 Printer Electrical System 2.4.1 Outline 2.4.1.1 Overview 2-38 F-2-25 2-39 2.4.2 Main Controller 2.4.2.1 Main controller components 2-40 2-41 2.4.3 Carriage Relay PCB 2.4.3.1 Carriage relay PCB components 2.4.4 Head Relay PCB 2.4.4.1 Head relay PCB components 2-42 2.4.5 Maintenance Cartridge Relay PCB 2.4.5.1 Maintenance cartridge relay PCB components 2.4.6 Power Supply 2.4.6.1 Power supply block diagram 2-43 2.5 Detection Functions with Sensors 2.5.1 Sensors for covers 2-44 2.5.2 Ink passage system 2-45 2-46 2-47 2.5.3 Carriage system 2-48 2-49 2.5.4 Paper path system Page 3-1 3.1 Transporting the Printer 3.1.1 Transporting the Printer 3.1.1.1 Transporting the Printer 3-2 3-3 3-4 3.1.2 Reinstalling the Printer 3.1.2.1 Reinstalling the Printer Page Page 4.3 Points to Note on Disassembly and Reassembly........................................ 4-3 Page Chapter 4 F-4-2 4-2 Printer SymbolMeanings c: Connector,e: E-ring, h: Holder, s: Screw 4-3 4.3 Points to Note on Disassembly and Reassembly 4.3.1 Note on locations prohibited from disassembly 4.3.2 Moving the carriage manually 4.3.3 Units requiring draining of ink 4-4 4.3.4 External Covers Page 4-6 4-7 4-8 4-9 4-10 4-11 4.3.5 Waste Ink Box 4-12 4.3.6 Driving Unit 4-13 4.3.7 Ink Tube Unit 4-14 4-15 4-16 4.3.8 Carriage Unit 4-17 4-18 4-19 4-20 4-21 4.3.9 Feeder Unit 4-22 4.3.10 Purge Unit 4-23 4.3.11 Ink Tank Unit Page 4-25 4.3.12 Head Management Sensor 4-26 4.3.13 Multi Sensor 4-27 4.3.14 PCBs 4-28 4.3.15 Opening the Cap/Moving the Wiper Unit 4-29 4.3.16 Opening/Closing the Ink Supply Valve 4-30 4.3.17 Draining the Ink 4-31 4.4 Applying the Grease 4.4.1 Applying the Grease Chapter 4 4-32 F-4-41 F-4-42 4.5 Adjustment and Setup Items 4.5.1 Adjustment Item List 4.5.2 Procedure after Replacing the Feed Roller or Feed Roller Encoder 4.5.3 Procedure after Replacing the Carriage Unit or Multi Sensor 4-34 4.5.4 Procedure after Replacing the Head Management Sensor Page Page 5-1 5.1 Periodic Replacement Parts 5.1.1 Periodic Replacement Parts 5.2 Consumable Parts 5.2.1 Consumable Parts Level Periodic Replacement part User None Service Personnel None 5.3 Periodic Maintenance 5.3.1 Periodic Maintenance Page Page 5-5 Page Page 6-1 6.1 Troubleshooting 6.1.1 Outline 6.1.1.1 Outline of Troubleshooting 6-2 6.2 Location of Connectors and Pin Arrangement 6.2.1 Main controller PCB 6-3 6-4 6-5 6-6 6-7 6-8 6-9 6-10 6-11 6-12 6.2.2 Carriage relay PCB 6-13 6-14 6-15 6-16 6-17 6-18 6-19 6.2.3 Head relay PCB 6-20 6-21 6-22 6-23 6-24 6.3 Version Up 6.3.1 Firmware Update Tool 6-25 6.4 Service Tools 6.4.1 Tool List Page Page Page 7-1 7.1 Service Mode 7.1.1 Service Mode Operation 7.1.2 Map of the Service Mode Page Page Page Page Page Page Page 7-10 7.1.3 Details of Service Mode 7-11 7-12 7-13 7-14 7-15 7-16 7-17 7-18 7-19 7-20 7-21 7-22 7-23 7-24 7-25 7-26 7-27 7.1.4 Sample Printout F-7-1 (1) (2) (3) (a) (b) (c) (d) (e) (f) 7-28 Nozzle Check Pattern SERVICE 7-29 Chapter 7 7-30 F-7-5 7-31 F-7-6 7-32 7.2 Special Mode 7.2.1 Special Modes for Servicing 7-33 Page Page 8.1 Outline 8.1.1 Outline 8-2 8.2 Warning Table 8.2.1 Warnings 8-3 8.3 Error Table 8.3.1 Error Code List 8-4 8-5 8-6 8.4 Sevice Call Table 8.4.1 Service call errors Page Main controller PCB (1/3) Carriage relay PCB (1/2) General Circuit Diagram (2/4) F-1-2 Main controller PCB (2/3) General Circuit Diagram (3/4) F-1-3 Main controller PCB (3/3)