ContentsContents2.1 Basic Operation Outline.................................................................................................................................................2-12.1.1 Printer Diagram............................................................................................................................................................................ 2-12.1.2 Printer Diagram............................................................................................................................................................................ 2-12.1.3 Print Signal Sequence .................................................................................................................................................................. 2-32.1.4 Print Signal Sequence .................................................................................................................................................................. 2-42.1.5 Print Driving ................................................................................................................................................................................ 2-52.1.6 Print Driving ................................................................................................................................................................................ 2-72.1.7 Print Driving ................................................................................................................................................................................ 2-92.2 Firmware ......................................................................................................................................................................2-112.2.1 Operation Sequence at Power-on............................................................................................................................................... 2-112.2.2 Operation Sequence at Power-off .............................................................................................................................................. 2-122.2.3 Print Control............................................................................................................................................................................... 2-132.2.4 Print Control............................................................................................................................................................................... 2-132.2.5 Print Control............................................................................................................................................................................... 2-212.2.6 Print Position Adjustment Function........................................................................................................................................... 2-282.2.7 Head Management ..................................................................................................................................................................... 2-282.2.8 Printhead Overheating Protection Control................................................................................................................................. 2-282.2.9 Pause between Pages.................................................................................................................................................................. 2-282.2.10 White Raster Skip .................................................................................................................................................................... 2-282.2.11 Sleep mode............................................................................................................................................................................... 2-282.2.12 Hard disk drive......................................................................................................................................................................... 2-282.3 Printer Mechanical System ..........................................................................................................................................2-302.3.1 Outline........................................................................................................................................................................................ 2-302.3.1.1 Outline...........................................................................................................................................................................................................2-302.3.2 Ink Passage................................................................................................................................................................................. 2-312.3.2.1 Ink Passage....................................................................................................................................................................................................2-312.3.2.1.1 Overview of Ink Passage.......................................................................................................................................................................2-312.3.2.2 Ink Tank Unit ................................................................................................................................................................................................2-322.3.2.2.1 Structure of Ink Tank Unit ....................................................................................................................................................................2-322.3.2.3 Carriage Unit .................................................................................................................................................................................................2-342.3.2.3.1 Functions of Carriage unit.....................................................................................................................................................................2-342.3.2.3.2 Structure of Carriage Unit .....................................................................................................................................................................2-352.3.2.4 Printhead .......................................................................................................................................................................................................2-372.3.2.4.1 Structure of Printhead............................................................................................................................................................................2-372.3.2.5 Purge Unit .....................................................................................................................................................................................................2-382.3.2.5.1 Functions of Purge Unit ........................................................................................................................................................................2-382.3.2.5.2 Structure of Purge Unit .........................................................................................................................................................................2-412.3.2.6 Maintenance Cartridge ..................................................................................................................................................................................2-432.3.2.6.1 Maintenance Cartridge ..........................................................................................................................................................................2-432.3.2.7 Air Flow ........................................................................................................................................................................................................2-442.3.2.7.1 Air flow .................................................................................................................................................................................................2-442.3.3 Paper Path .................................................................................................................................................................................. 2-452.3.3.1 Outline...........................................................................................................................................................................................................2-452.3.3.1.1 Overview of Paper Path.........................................................................................................................................................................2-452.3.3.2 Paper Path......................................................................................................................................................................................................2-462.3.3.2.1 Structure of Feed Roller Unit ................................................................................................................................................................2-462.3.3.3 Cutter Unit.....................................................................................................................................................................................................2-462.3.3.3.1 Structure of Cutter Unit.........................................................................................................................................................................2-462.4 Printer Electrical System..............................................................................................................................................2-472.4.1 Outline........................................................................................................................................................................................ 2-472.4.1.1 Overview .......................................................................................................................................................................................................2-472.4.1.2 Overview .......................................................................................................................................................................................................2-47