Canon iPF9000 series Service Manual page 107

Contents
2.1 Basic Operation Outline.................................................................................................................................................2-1
2.1.1 Printer Diagram............................................................................................................................................................................ 2-1
2.1.2 Printer Diagram............................................................................................................................................................................ 2-1
2.1.3 Print Signal Sequence .................................................................................................................................................................. 2-3
2.1.4 Print Signal Sequence .................................................................................................................................................................. 2-4
2.1.5 Print Driving ................................................................................................................................................................................ 2-5
2.1.6 Print Driving ................................................................................................................................................................................ 2-7
2.1.7 Print Driving ................................................................................................................................................................................ 2-9
2.2 Firmware ......................................................................................................................................................................2-11
2.2.1 Operation Sequence at Power-on............................................................................................................................................... 2-11
2.2.2 Operation Sequence at Power-off .............................................................................................................................................. 2-12
2.2.3 Print Control............................................................................................................................................................................... 2-13
2.2.4 Print Control............................................................................................................................................................................... 2-13
2.2.5 Print Control............................................................................................................................................................................... 2-21
2.2.6 Print Position Adjustment Function........................................................................................................................................... 2-28
2.2.7 Head Management ..................................................................................................................................................................... 2-28
2.2.8 Printhead Overheating Protection Control................................................................................................................................. 2-28
2.2.9 Pause between Pages.................................................................................................................................................................. 2-28
2.2.10 White Raster Skip .................................................................................................................................................................... 2-28
2.2.11 Sleep mode............................................................................................................................................................................... 2-28
2.2.12 Hard disk drive......................................................................................................................................................................... 2-28
2.3 Printer Mechanical System ..........................................................................................................................................2-30
2.3.1 Outline........................................................................................................................................................................................ 2-30
2.3.1.1 Outline...........................................................................................................................................................................................................2-30
2.3.2 Ink Passage................................................................................................................................................................................. 2-31
2.3.2.1 Ink Passage....................................................................................................................................................................................................2-31
2.3.2.1.1 Overview of Ink Passage.......................................................................................................................................................................2-31
2.3.2.2 Ink Tank Unit ................................................................................................................................................................................................2-32
2.3.2.2.1 Structure of Ink Tank Unit ....................................................................................................................................................................2-32
2.3.2.3 Carriage Unit .................................................................................................................................................................................................2-34
2.3.2.3.1 Functions of Carriage unit.....................................................................................................................................................................2-34
2.3.2.3.2 Structure of Carriage Unit .....................................................................................................................................................................2-35
2.3.2.4 Printhead .......................................................................................................................................................................................................2-37
2.3.2.4.1 Structure of Printhead............................................................................................................................................................................2-37
2.3.2.5 Purge Unit .....................................................................................................................................................................................................2-38
2.3.2.5.1 Functions of Purge Unit ........................................................................................................................................................................2-38
2.3.2.5.2 Structure of Purge Unit .........................................................................................................................................................................2-41
2.3.2.6 Maintenance Cartridge ..................................................................................................................................................................................2-43
2.3.2.6.1 Maintenance Cartridge ..........................................................................................................................................................................2-43
2.3.2.7 Air Flow ........................................................................................................................................................................................................2-44
2.3.2.7.1 Air flow .................................................................................................................................................................................................2-44
2.3.3 Paper Path .................................................................................................................................................................................. 2-45
2.3.3.1 Outline...........................................................................................................................................................................................................2-45
2.3.3.1.1 Overview of Paper Path.........................................................................................................................................................................2-45
2.3.3.2 Paper Path......................................................................................................................................................................................................2-46
2.3.3.2.1 Structure of Feed Roller Unit ................................................................................................................................................................2-46
2.3.3.3 Cutter Unit.....................................................................................................................................................................................................2-46
2.3.3.3.1 Structure of Cutter Unit.........................................................................................................................................................................2-46
2.4 Printer Electrical System..............................................................................................................................................2-47
2.4.1 Outline........................................................................................................................................................................................ 2-47
2.4.1.1 Overview .......................................................................................................................................................................................................2-47
2.4.1.2 Overview .......................................................................................................................................................................................................2-47
Contents