Canon iPF5000 series Service Manual page 85

Contents
2.1 Basic Operation Outline.................................................................................................................................................2-1
2.1.1 Printer Diagram............................................................................................................................................................................ 2-1
2.1.2 Printer Diagram............................................................................................................................................................................ 2-2
2.1.3 Print Signal Sequence .................................................................................................................................................................. 2-3
2.1.4 Print Driving ................................................................................................................................................................................ 2-4
2.2 Firmware ........................................................................................................................................................................2-6
2.2.1 Operation Sequence at Power-on................................................................................................................................................. 2-6
2.2.2 Operation Sequence at Power-off ................................................................................................................................................ 2-6
2.2.3 Print Control................................................................................................................................................................................. 2-7
2.2.4 Print Control................................................................................................................................................................................. 2-8
2.2.5 Print Position Adjustment Function........................................................................................................................................... 2-14
2.2.6 Head Management ..................................................................................................................................................................... 2-14
2.2.7 Printhead Overheating Protection Control................................................................................................................................. 2-14
2.2.8 Pause between Pages.................................................................................................................................................................. 2-14
2.2.9 White Raster Skip ...................................................................................................................................................................... 2-14
2.2.10 Sleep Mode .............................................................................................................................................................................. 2-14
2.3 Printer Mechanical System ..........................................................................................................................................2-15
2.3.1 Outline........................................................................................................................................................................................ 2-15
2.3.1.1 Outline...........................................................................................................................................................................................................2-15
2.3.2 Ink Passage................................................................................................................................................................................. 2-16
2.3.2.1 Ink Passage....................................................................................................................................................................................................2-16
2.3.2.1.1 Overview of Ink Passage.......................................................................................................................................................................2-16
2.3.2.2 Ink Tank Unit ................................................................................................................................................................................................2-18
2.3.2.2.1 Structure of Ink Tank Unit ....................................................................................................................................................................2-18
2.3.2.3 Carriage Unit .................................................................................................................................................................................................2-20
2.3.2.3.1 Functions of Carriage Unit....................................................................................................................................................................2-20
2.3.2.3.2 Functions of Carriage Unit....................................................................................................................................................................2-20
2.3.2.3.3 Structure of Carriage Unit .....................................................................................................................................................................2-22
2.3.2.3.4 Structure of Carriage Unit .....................................................................................................................................................................2-24
2.3.2.4 Printhead .......................................................................................................................................................................................................2-26
2.3.2.4.1 Structure of Printhead............................................................................................................................................................................2-26
2.3.2.5 Purge Unit .....................................................................................................................................................................................................2-27
2.3.2.5.1 Functions of Purge Unit ........................................................................................................................................................................2-27
2.3.2.5.2 Structure of Purge Unit .........................................................................................................................................................................2-30
2.3.2.6 Maintenance Cartridge ..................................................................................................................................................................................2-32
2.3.2.6.1 Maintenance cartridge ...........................................................................................................................................................................2-32
2.3.2.7 Air Flow ........................................................................................................................................................................................................2-33
2.3.2.7.1 Air flow .................................................................................................................................................................................................2-33
2.3.2.7.2 Air flow .................................................................................................................................................................................................2-33
2.3.3 Paper Path .................................................................................................................................................................................. 2-35
2.3.3.1 Outline...........................................................................................................................................................................................................2-35
2.3.3.1.1 Overview of Paper Path.........................................................................................................................................................................2-35
2.3.3.2 Paper Path......................................................................................................................................................................................................2-36
2.3.3.2.1 Structure of Cassette Pick-up Unit ........................................................................................................................................................2-36
2.3.3.2.2 Cassette Pick-up Sequence....................................................................................................................................................................2-40
2.3.3.2.3 Structure of Roll Media Pick-up Unit ...................................................................................................................................................2-41
2.3.3.2.4 Roll Media Pick-up Sequence ...............................................................................................................................................................2-42
2.3.3.2.5 Structure of the Manual Feed Unit........................................................................................................................................................2-43
2.3.3.2.6 Manual Feed (from Front) Sequence ....................................................................................................................................................2-45
2.3.3.2.7 Manual Feed (from Rear) Sequence......................................................................................................................................................2-45
2.3.3.2.8 Structure of Feed Roller Unit ................................................................................................................................................................2-47
2.3.3.2.9 Structure of Feed Roller Unit ................................................................................................................................................................2-47
2.3.3.2.10 Feed Roller Eccentricity Detection Function ......................................................................................................................................2-49
Contents