Specifications
REV.-A
2.1
2.2
2.3
CHAPTER 2
OPERATION PRINCIPLES
OPERATING PRINCIPLES OF PRINTER MECHANISM..............2-1
2.1.1.
Printhead Mechanism
.............................................................2.2
2.1.2. Carriage Mechanism
...............................................................2.4
2.1.3.
Paper Feed Mechanism
..........................................................2.6
2.1.3.1 Paper Feeding Mechanism.....................................2-6
2.1.3.2 Release Lever
Operation.........................................2.8
2.1.3.3 Paper Insertion entrance
........................................2.l
O
2.1.3.4 Top Edge Holder Mechanism Operation ...........2 -13
2.1.4 Ink Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
.............2 -14
2.1.4.1
2.1.4.2
2.1.4.3
2.1.4.4
2.1.4.5
2.1.4.6
2.1.4.7
Pump Motor
................................................................2.l
5
Pump Mechanism
.....................................................2.l 6
Cap Mechanism
.........................................................2.l 7
Cleaning Mechanism and Carriage Lock
Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
2-18
Ink Cartridge and Ink End Sensor
Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
2-20
Wasted Ink Drain Tank...........................................2.2l
Operational Sequence of Ink Mechanism ........2 -22
2.1.5 Case Open Interlock
Switch..................................................2.26
OPERATING PRINCIPLES OF POWER SUPPLY
CIRCUITRY..2-27
2.2.1 Voltage Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.
..2-27
2.2.2 Operating Principles of Power Supply Circuitry ............2 -27
OPERATING PRINCIPLES OF CONTROL CIRCUITRY ...............2 -29
2.3.1
2.3.2
2.3.3
2.3.4
2.3.5
2.3.6
2.3.7
2.3.8
2.3.9
2.3.10
Control Circuitry Overview
...................................m.........mm.mmm.2.29
Reset Circuit
...............................................................................2
-31
Detection Circuit
.......................................................................2.3 1
Paper Feed Motor Drive Circuit ...........................................2-32
Carriage Motor Drive
Circuit.................................................2.33
Printhead Drive Circuit ...........................................................2.34
Pump Motor Drive Circuit
......................................................2.36
TE Motor Drive Circuit
............................................................2.37
Timer Circuit and Backup Circuit ........................................2.37
EEPROM Control
Circuit.........................................................2.38
z-i