Star Micronics TUP400 Manual do Utilizador descarregar pdf (Página 31)

– 27 –

Fig.2-6 Timing Chart

2-2-3. Head Current Control

Heat buildup in the head during operation can cause print quality to degrade. To maintain uniform printing quality, the printer

varies the energizing time (time that STROBE remains LOW) in accordance with the head temperature.

The thermal head’s surface temperature is calculated based on the resistance value of an attached thermistor. Energizing

time is reduced at higher temperatures, as indicated in the Figure 2-6.

Fig. 2-7 Head Energizing Control

24V

CLOCK

LATCH

STROBE1

STROBE2

STROBE3

STROBE4

STROBE5

COMMON

STROBE1, STROBE2, STROBE3

STROBE4, STROBE5,

t t

10 20 30 40 50

300

400

500

Head Energizing Time t (µsec)

Thermistor Temp. °C

600

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 102 103

TUP400 Series 1
INTRODUCTION 3
CHAPTER 1 5
1. General Specifications 7
Unit : mm 10
2. External Appearance 14
Printer head 15
Presenter 15
3. DIP-Switch Settings 16
DIP switch #2 (4 bits): 18
Not used 18
4. Print-Density Adjustment 19
Main Logic Board 20
Interface Board 20
6. HEX Dump Mode/Test Print 21
CHAPTER 2 23
THEORY OF OPERATION 23
1. Block Diagram 25
(1) Main Logic Board 26
(2) Interface board 26
(3) Near-end sensor board 26
(4) RESUME Switch 26
(5) Printer Mechanism 26
2. Main Logic Board 27
Fig. 2-4 Parallel Interface 29
2-2. Editing and Printing 30
Head Energizing Time t (µsec) 31
2-3. Feed-Motor Drive Circuit 32
2-4. Power-On Reset Circuit 33
3. Printer Mechanism 35
3-3. Sensor 36
Detection Signal 37
Leaf Switch 37
CHAPTER 3 39
1. Presenter (TUP482) 41
Presenter (TUP492) 41
2. Cutter (TUP452 and TUP482) 42
Cutter (TUP492) 42
4. Main Logic Board 43
5. Print Head Unit 44
6. Feed Motor Assembly 44
7. Sensor Unit 45
Old Type 45
New Type 45
CHAPTER 4 47
MAINTENANCE AND LUBRICATION 47
1. Maintenance 49
2. Lubrication 50
(2) REVISED EDITION MARK 53
1. Printer Assembly 54
B. TUP452 55
C. TUP482 56
1-1-2. Parts List 57
1-2-1. Disassembly Drawing 58
Printer Assembly TUP492 59
1-2-2. Parts List 59
2. Printer Mechanism 60
B. TMP452 61
Printer Mechanism TMP412/452 62
2-1-2. Parts List 62
2-2-1. Disassembly Drawing 63
Printer Mechanism TMP492W-24N 64
2-2-2. Parts List 64
3. Presenter-Assembly 65
Presenter-Assembly PR112-24 66
3-1-2. Parts List 66
3-2-1. Disassembly Drawing 67
Presenter-Assembly PR242-24 68
3-2-2. Parts List 68
4. Wiring Scheme of Printer 69
4-2. RS422A Interface Type 70
4-3. Parallel Interface Type 71
5-1. Circuit Diagram 72
5-2. Parts List 76
6-1. Circuit Diagram 79
6-2. Component Layout 84
6-3. Parts List 85
7-1. Circuit Diagram 88
7-2. Parts List 89
8-1. Circuit Diagram 90
8-2. Component Layout 91
8-3. Parts List 91
9. RS-422A Interface Board 93
9-2. Component Layout 94
9-3. Parts List 94
10-1. Circuit Diagram 95
10-2. Parts List 96
11-1. Circuit Diagram 97
11-2. Component Layout 98
11-3. Parts List 98
12. Near-End Sensor Board 99
13. Paper-End Sensor Board 100
14. Transit Board 101
15. Presenter Sensor Board 102
2001.09.30 103
Printed in Japan, 80873069 103
Distributed by 103

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