Axiohm CMBC-XMBC User manual

AXIOHM, 1-9 Rue d’Arcueil
92120 Montrouge, France
Tel : (33) (0) 1 47 46 78 00 Fax (33) (0) 1 47 46 78 76
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THERMAL PRINTER MECHANISM
Mini-Printer
CMBC-XMBC
CMDG-XMDG
User Manual
Issue A, reference 3102473-FDE
April, 1998

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IMPORTANT
This manual contains the basic instructions to run your printer. Read it
carefully before using your printer paying full attention to section concerning
recommendations .

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TABLE OF CONTENTS
1. UNPACKING 5
2. OVERVIEW 5
3. MECHANICAL SPECIFICATIONS 6
3.1. General description 6
3.2. Dimensions of the complete mechanism : 6
3.3. Mechanical views 7
3.4. Optional drive for paper rewinder 9
4. ELECTRICAL SPECIFICATIONS 10
4.1. Nominal Power supply 10
4.2. Nominal Consumption 10
4.3. Description of printhead 10
4.3.1. Function of each 64 bit IC (integrated circuit) 11
4.3.2. Operation of the complete module 12
4.3.3. Electrical specifications of 64-BIT LSI driver 13
4.3.4. Printhead Connection 16
4.4. Unipolar paper feed motor 18
4.4.1. General specification 18
4.4.2. Connection 18
4.4.3. Induction sequence 18
4.5. Bipolar paper feed motor 19
4.5.1. General specification 19
4.5.2. Connections 19
4.5.3. Induction sequence and timing 20
4.5.4. Bipolar stepping motor electric control 21
4.6. Bipolar cutter motor 22
4.6.1. Overview 22
4.6.2. General specification 22
4.6.3. Connection 22
4.6.4. Induction sequence 22
4.6.5. Initialisation Diagram 23
4.6.6. Driving cycle 23
4.7. Unipolar cutter motor 24
4.7.1. Overview 24
4.7.2. General specification 24
4.7.3. Connection 24
4.7.4. Induction sequence 24
4.8. Switch & pitch counter driving 25

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4.9. Cutter micro-switch specifications 26
4.9.1. General specification 26
4.9.2. Connection 26
4.10. Opto-sensor specification 26
4.10.1. Electrical characteristics 26
4.10.2. Connection 27
4.10.3. External circuit 27
5. PRINTER CONTROL TECHNIQUES 28
5.1. Mode 1 28
5.2. Mode 2 29
5.3. Mode 3 30
6. RECOMMENDATIONS 31
6.1. Mechanical recommendations 31
6.2. Housing design recommendations 31
6.3. Energising & de-energising printer 31
6.4. Printing recommendations 31
6.5. Recommendations for paper 32
6.6. General 32
6.7. Cleaning recommendations 32
6.8. Special recommendation for XM** (printer with cutter) 33
7. PAPER SUPPLIERS 34
8. SPARE PARTS 34
9. APPENDICES 35
9.1. APPENDIX 1 : THERMISTOR SPECIFICATIONS 35
9.2. APPENDIX 2 : Paper specification 37
9.3. APPENDIX 3 : Heating time and historical control 38
9.4. APPENDIX 4 : CHANGE PRINTHEAD 41
9.5. APPENDIX 5 : FIT OR CHANGE THE COVER WITH CUTTER 41
9.6. APPENDIX 6 : PRODUCT NAME & CODIFICATION 42

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1. UNPACKING
Each printer mechanism is packaged in an antistatic bag. Observe precautions for handling in
electrostatic protected areas.
2. OVERVIEW
Based on static thermal printing technology, the CM/XM series is a family of user-friendly, highly
reliable devices which have been specially designed to fit in the minimum space.
CMxx : Printer only or printer with optional tear bar cover
XMxx : Printer with cutter
Very small size printer and cutter
Silent mechanism
Option of 4 dots/mm or 8 dots/mm print-heads
Optional cover with tear bar
Optional cover with Guillotine cutter (XMxx)
Easy to connect (only one connector for motor, printhead, opto-sensor and cutter)
Front and bottom paper introduction possible
Optional drive for paper rewinder
SUMMARY OF PRINTER SPECIFICATIONS
ITEM VALUE UNITS
xMBC xMDG -
Printing method Static thermal dot line printing -
Number of resistor dots 192 384 -
Resolution 4 8 Dots/mm
Printing width 48 mm
Paper width 60 mm
Head temperature detection By Thermistor -
Number of steps / dot line 2 1 -
Paper feed / dot line 0.250 0.125 mm
Paper empty detection Opto-sensor -
Operating voltage range Vcc (logic) 4.75-5.25 V DC
Operating voltage range Vch (dot) 20 - 28 20 - 26.4 V DC
Peak printhead current
(all dots ”on ” at nominal value ) 8.25 8.8 A
Current consumption:
V ch (at nominal value) 43 23 mA per resistor dot ”on ”
Current consumption:
V cc (at nominal value) 160 100 µA

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Current consumption:
Stepping motor for paper feed 320 (600 bipolar) mA
Current consumption:
Stepping motor for cutter 500 (1000 bipolar) mA
Storage range - 20 to + 60 °C
Operating range -10 to 50 for CMBC 0 to 50 for CMDG °C
+5 to +45 version with cutter XM**
Electrical life time* 1.2 ×108xMBC 108xMDG pulses
Mechanical life time* 50 50 Km
Relative Humidity (operating) 20 to 85 no condensing *2%
Over all dimensions:
Width (without rewinder)
Depth
Height
CMxx
74.5
61
32
CMxx(cover)
74.5
62.5
36
XMxx
74.8
67
39.2
mm
mm
mm
Weight 140 200 g
Recommended paper 2320061 / WS 752-57 (60µ) Axiohm reference / Arjo Wiggins
Maximum paper thickness 80 µ
Cutter life time (XMxx) 300 000 cuts (with paper 2320061)
* Per AXIOHM standard test conditions (which are mainly : 24V, 25°C, dot printing duty cycle = 30 %)
* 2 for printer with cutter (XM**) the following curve defines Relative Humidity area
HR %
°C
20
80
75
5
35
45
3. MECHANICAL SPECIFICATIONS
3.1. General description
The mechanism consists in :
- Plastic chassis
- Optional hinged cover with tear bar for CMxx or cutter for XMxx
- Cutter with stepping motor and mechanical switch for position detection (XMxx series)
- Stepping motor
- Gear train
- Printhead
- End of paper opto-sensor
3.2. Dimensions of the complete mechanism :
Height :......................................32 (CMxx) / 36 (CMxx with cover) / 39.2 (XMxx) mm
Depth :....................................... 61 (CMxx) / 62.5 (CMxx with cover) / 67 (XMxx) mm
Width (without rewinder option).. 74.5 (Cmxx) / 74.8 (Xmxx) mm
Weight :..................................... 140 (CMxx) / 200 (XMxx) g

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3.3. Mechanical views
Fig. 1 Without cover
Fig. 2 With tear bar cover

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39.2
32
37.9
37
61 65
1.8
74.7
40.75
50.1
23.6
Use self threader screws for plastic, the fixing holes diameter being 2.5 mm, use a maximum diameter of
3 mm for screws and a maximum depth in chassis of 7 mm (from the external edge of holes).
Fig.3 With cutter cover
Fig.4 Chassis fixing
Ground
terminal

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This distance is 8 mm for XMxx
Opto- sensor position
The position of the end of paper opto-sensor relatively to the paper allows top off form detection
Paper sensitive layer
Paper sensitive layer
paper path
direction
paper inlet 1
paper inlet 2
5.5
5
77
Fig. 6 Opto- sensor position
3.4. Optional drive for paper rewinder
An optional pulley can be fitted on the printer side to drive a paper re-winder (see drawings on preceding
pages)
Paper path and distance from line of dots to line of cut
7 mm
Paper inlet 1
Paper inlet 2
Fig.5 paper path
Paper outlet

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4. ELECTRICAL SPECIFICATIONS
4.1. Nominal Power supply
Printer CMBC / DG
XMBC / DG Units
Printhead :
Logic (Vcc)
Dot line 5 24 V DC V DC
Stepping motor 24 V DC
4.2. Nominal Consumption
Printer CMBC
XMBC CMDG XMDG Units
Printhead :
Heating
current / dot
(Vch) at nominal values 43 23 mA
Logic current / dot (Vcc) 160 100 µA
Stepping Motor (2 activated
phases) for paper feed 320 unipolar
600 bipolar mA
Stepping Motor (2 activated
phases) for cutter XMxx 500 unipolar
1000 bipolar mA
Maximum instantaneous
current per dot line (at 24V) 8.25 8.8 A
4.3. Description of printhead
Printer CM/XMBC CM/XMDG UNIT
Driver chips
(64 bit BiCMos LSI) 3 6 -
Nominal dot resistance 530 (±15 %) 1000 (±3 %) ohms
Nominal dot energie
(in standard conditions) 2.0 0.8 mJ
Max printing speed (with 24V
power supply)
(with dot historical control)
8 8 cm/sec