Contents
Chapter 1 PRODUCT DESCRIPTION
1.1 FEATURES ......................................................................................................... 4
1.2 SPECIFICATIONS ............................................................................................ 5
1.2.1 Physical Specification .................................................................................. 5
1.2.2 Printing Specification .................................................................................. 5
1.2.3 Paper Feeding .............................................................................................. 6
1.2.4 Paper Specification ...................................................................................... 6
1.2.4.1 Plain paper ........................................................................................... 6
1.2.4.2 Envelope .............................................................................................. 7
1.2.4.3 Exclusive paper ................................................................................... 7
1.2.5 Printing Area ................................................................................................ 9
1.2.5.1 Cut sheet .............................................................................................. 9
1.2.5.2 Envelopes .......................................................................................... 10
1.2.6 Ink Cartridge Specification ........................................................................ 10
1.2.6.1 Black ink cartridge ............................................................................ 10
1.2.6.2 Color ink cartridge ............................................................................. 11
1.2.7 Electric Specification ................................................................................. 11
1.2.8 Environmental Condition ........................................................................... 12
1.2.9 Reliability .................................................................................................. 12
1.2.10 Safety Approvals ..................................................................................... 12
1.2.11 Acoustic Noise ......................................................................................... 12
1.2.12 CE Marking ............................................................................................. 12
1.3 INTERFACE ..................................................................................................... 13
1.3.1 Parallel Interface (Forward Channel) ........................................................ 13
1.3.2 Parallel Interface (Reserve Channel) ......................................................... 16
1.3.3 USB Interface ............................................................................................ 17
1.3.4 Prevention Hosts of Data Transfer Time-out ............................................. 18
1.3.5 Interface Selection ..................................................................................... 18
1.3.6 IEEE1284.4 Protocol ................................................................................. 18
1.4 PANEL CONTROL ......................................................................................... 19
1.4.1 Indicators (LEDs) ...................................................................................... 19
1.4.2 Panel Functions .......................................................................................... 20
1.4.3 Printer Condition and Panel Status ............................................................ 20
1.4.4 Error Status ................................................................................................ 21
1.4.5 Printer Initialization ................................................................................... 21
Chapter 2 Operating Principles
2.1 Overview ............................................................................................................ 23
2.1.1 Printer Mechanism ..................................................................................... 23
2.1.2 Printhead .................................................................................................... 24
2.1.2.1 Printing Process ................................................................................. 25
2.1.2.2 Printing Method ................................................................................. 25
2.1.3 Carriage Mechanism .................................................................................. 26
2.1.4 Paper Loading/Feeding Mechanism .......................................................... 27
2.1.4.1 Paper Loading Mechanism (ASF unit) .............................................. 28
2.1.4.2 Paper Feeding Mechanism ................................................................ 31
2.1.5 Ink System Mechanism ............................................................................. 32
2.1.5.1 Capping Mechanism .......................................................................... 32
2.1.5.2 Pump unit mechanism ....................................................................... 34
2.1.6 Ink Sequence .............................................................................................. 35
2.2 Electrical Circuit Operating Principles .......................................................... 37
2.2.1 C417 PSB/PSE board ................................................................................ 37
2.2.2 C418 MAIN Board .................................................................................... 40
2.2.2.1 Main Elements ................................................................................... 41
2.2.2.2 Printhead Driver Circuit .................................................................... 42
2.2.2.3 PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit .......................... 43
2.2.2.4 CR Motor Driver Circuit ................................................................... 43
2.2.2.5 Reset Circuit ...................................................................................... 44
2.2.2.6 EEPROM Control Circuit ................................................................. 44
2.2.2.7 Sensor Circuit .................................................................................... 45