Canon iPF605 Service Manual page 61

Contents
2.1 Basic Operation Outline.................................................................................................................................................2-1
2.1.1 Printer Diagram............................................................................................................................................................................ 2-1
2.1.2 Print Signal Sequence .................................................................................................................................................................. 2-2
2.1.3 Print Driving ................................................................................................................................................................................ 2-3
2.2 Firmware ........................................................................................................................................................................2-5
2.2.1 Operation Sequence at Power-on................................................................................................................................................. 2-5
2.2.2 Operation Sequence at Power-off ................................................................................................................................................ 2-6
2.2.3 Print Control................................................................................................................................................................................. 2-7
2.2.4 Print Position Adjustment Function........................................................................................................................................... 2-12
2.2.5 Head Management ..................................................................................................................................................................... 2-12
2.2.6 Printhead Overheating Protection Control................................................................................................................................. 2-12
2.2.7 Pause between Pages.................................................................................................................................................................. 2-12
2.2.8 White Raster Skip ...................................................................................................................................................................... 2-12
2.2.9 Sleep Mode ................................................................................................................................................................................ 2-12
2.3 Printer Mechanical System ..........................................................................................................................................2-12
2.3.1 Outline........................................................................................................................................................................................ 2-12
2.3.1.1 Outline...........................................................................................................................................................................................................2-12
2.3.2 Ink Passage................................................................................................................................................................................. 2-14
2.3.2.1 Ink Passage....................................................................................................................................................................................................2-14
2.3.2.1.1 Overview of Ink Passage.......................................................................................................................................................................2-14
2.3.2.2 Ink Tank Unit ................................................................................................................................................................................................2-15
2.3.2.2.1 Structure of Ink Tank Unit ....................................................................................................................................................................2-15
2.3.2.3 Carriage Unit .................................................................................................................................................................................................2-17
2.3.2.3.1 Functions of Carriage Unit....................................................................................................................................................................2-17
2.3.2.3.2 Structure of Carriage Unit .....................................................................................................................................................................2-18
2.3.2.4 Printhead .......................................................................................................................................................................................................2-20
2.3.2.4.1 Structure of Printhead............................................................................................................................................................................2-20
2.3.2.5 Purge Unit .....................................................................................................................................................................................................2-21
2.3.2.5.1 Functions of Purge Unit ........................................................................................................................................................................2-21
2.3.2.5.2 Structure of Purge Unit .........................................................................................................................................................................2-24
2.3.2.6 Maintenance Cartridge ..................................................................................................................................................................................2-26
2.3.2.6.1 Maintenance Cartridge ..........................................................................................................................................................................2-26
2.3.2.7 Air Flow ........................................................................................................................................................................................................2-27
2.3.2.7.1 Air flow .................................................................................................................................................................................................2-27
2.3.3 Paper Path .................................................................................................................................................................................. 2-28
2.3.3.1 Outline...........................................................................................................................................................................................................2-28
2.3.3.1.1 Overview of Paper Path.........................................................................................................................................................................2-28
2.3.3.2 Paper Path......................................................................................................................................................................................................2-29
2.3.3.2.1 Structure of Roll Media Pick-up Unit ...................................................................................................................................................2-29
2.3.3.2.2 Structure of Manual Feed Unit..............................................................................................................................................................2-30
2.3.3.2.3 Manual Feed (from Front) Sequence ....................................................................................................................................................2-32
2.3.3.2.4 Manual Feed (from Rear) Sequence......................................................................................................................................................2-32
2.3.3.2.5 Structure of Feed Roller Unit ................................................................................................................................................................2-33
2.3.3.2.6 Feed Roller Eccentricity Detection Function ........................................................................................................................................2-34
2.3.3.2.7 Structure of Ejection Spur .....................................................................................................................................................................2-35
2.3.3.3 Cutter Unit.....................................................................................................................................................................................................2-36
2.3.3.3.1 Structure of Cutter unit..........................................................................................................................................................................2-36
2.4 Printer Electrical System..............................................................................................................................................2-37
2.4.1 Outline........................................................................................................................................................................................ 2-37
2.4.1.1 Overview .......................................................................................................................................................................................................2-37
2.4.2 Main Controller.......................................................................................................................................................................... 2-39
2.4.2.1 Main controller components .........................................................................................................................................................................2-39
2.4.3 Carriage Relay PCB................................................................................................................................................................... 2-40
Contents