UPDATE 2009.09.28
SPECIFICATIONS FOR APPROVAL
CUSTOMER
:
NOMENCLATURE
: 2 inch Thermal Printer mechanism
MODEL
: SMP685
SIGNATURE OF APPROVAL
http://www.fosvos.com/bixolon/
The Designs or Specifications are subject to change without notice
REVISION SHEET
The table below indicates which pages in this specification have been revised.
Before reading this specification, be sure you have the correct version of each page.
Revisions
Design section
Sheet revision NO.
Shee
REV. Sheet REV Sheet
REV. Document Date WRT CHK APL
t
A
Enactment
081020
J.K.KIM
J.S.LEE
J.T.KIM
I
A
17
A
B
Enactment
090928
J.K.KIM
J.S.LEE
J.T.KIM
II
III
A
A
1
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8
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Number of sheet
A
A
A
A
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A
A
A
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A
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18
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22
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B
B
B
Cover
Approval
sheet
Front Part
Specification
sheet
SMP685 SPECIFICATION
Revision
sheet
SHEET REVISION
Table of
contents
A
contents
SHEET NO
REV
Memo Total
I
REVISION SHEET
REV.
Sheet
Changed contents
Title
SMP685
Specification
(Standard)
http://www.fosvos.com/bixolon/
SMP685 SPECIFICATION
SHEET REVISION
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SHEET NO
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TABLE OF CONTENTS
1. DESIGN PRECAUTIONS
2. GENERAL SPECIFICATION
2-1.General Specifications
2-2.Heat Element dimensions
-------------------------------------------------- 1
-------------------------------------------------- 2
-------------------------------------------------- 2
-------------------------------------------------- 3
3. THERMAL HEAD
-------------------------------------------------- 4
3-1. General Specification
-------------------------------------------------- 4
3-2. Thermal Head Block Diagram
-------------------------------------------------- 4
3-3. Block and Activated Heat Elements ------------------------------------------------- 5
3-4. Printed position of the data
-------------------------------------------------- 5
3-5. Electrical Characteristics
-------------------------------------------------- 6
3-6. Time Chart
-------------------------------------------------- 7
3-7. Maximum condition at 25℃
-------------------------------------------------- 8
3-8. Head supply voltage
-------------------------------------------------- 8
3-9. Peak Current
-------------------------------------------------- 8
3-10. Control of a pulse width of Head -------------------------------------------------- 8
3-10-1. Pulse width on Voltage
--------------------------------------------------8
3-10-2. Pulse width Calibration on Temperature change ---------------------------- 9
3-10-3. Calculation Sample for the Head Activation pulse width ------------------ 9
3-10-4. Head History Control
--------------------------------------------------- 10
3-11. Thermistor Specification
-------------------------------------------------- 11
3-12. Detecting Abnormal temperatures of the Thermal Head ------------------------- 12
4. PAPER FEED MOTOR
4-1. Basic Specifications
4-2. Example of Driving Circuit
4-3. Excitation Sequence
4-4. Sample for drive Frequency
4-5. Acceleration Control
-------------------------------------------------- 13
-------------------------------------------------- 13
-------------------------------------------------- 13
-------------------------------------------------- 13
-------------------------------------------------- 15
-------------------------------------------------- 15
5. PAPER DETECTOR
5-1. Absolute Maximum Rating
5-2. Photoelectrical Characteristics
5-3. Sample External Circuit
-------------------------------------------------- 16
-------------------------------------------------- 16
------------------------------ ------------------- 17
-------------------------------------------------- 17
6. PIN LAYOUT FOR FPC
-------------------------------------------------- 18
7. OPERATION SEQUENCE
-------------------------------------------------- 19
8. PLATEN ROLLER ASSEMBLY DIMENSIONS --------------------------------------- 20
SMP685 SPECIFICATION
SHEET REVISION
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9. EXPLODED VIEW -------------------------------------------------------------------------- 21
10. PART LIST ------------------------------------------------------------------------------------ 22
SMP685 SPECIFICATION
SHEET REVISION
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SHEET NO
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1. DESIGN PRECAUTIONS
To maintain the initial level of performance of the printer and to prevent future problems
from occurring, observe the following precautions.
◆ If too much energy is applied to the thermal head, it may overheat and become
damaged. Always use the printer with the specified amount of energy.
◆ When turning the power on or off, always DISABLE (put in “Low” state) the
DST terminals.
◆ To prevent the thermal head from being damaged by static electricity:
◆ Keep the Vp power off when not printing to prevent the thermal head from becoming
electrically corroded.
◆ When turning the power on or off, perform the Vp and VDD simultaneously or in the
order of 1) and 2) as follows:
At power ON: 1) VDD (Logic) → 2) Vp
At power OFF: 1) Vp
→ 2) VDD (Logic)
◆ Always monitor the output of the platen position sensor and paper detector.
Incorrect activation of the thermal head may damage and reduce the longevity of
the thermal head and the platen.
Design the outer case so that the paper detector is not affected by light from
outside. Since a reflection type photo interrupter is used in the paper detector,
the detector may be affected by light from outside.
◆ Allow for movement of the FPC when designing the outer case because the FPC will
shift 2 to 4 mm from the thermal head moving. Also, design the outer case so that it
prevents the paper feed out from being caught in the platen.
SMP685 SPECIFICATION
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SMP685 SPECIFICATION
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2. GENERAL SPECIFICATIONS
2-1. General Specifications
Item
Specifications
Printing method
Thermal Dot Line Printing
Resolution
8dots/mm x 16 dots/mm (W*H)
Dots per line(dots)
384
Printing width
48mm
Printing Speed
Max 90mm/s at 8.5V
Paper feed pitch
0.0625mm
Head temperature detection
Via thermistor
Out of paper detection
Via photo interrupter
Operation voltage
7.2V DC (for head and motor drive :Max 8.5V DC)
2.7~5.25V DC (for logic)
Current consumption
(at 7.2V DC)
For driving the Head : 2.5A (64Dots)
For driving the Motor : 0.6A
Paper width
57.5 ± 0.5 mm
Paper feeding force
80gf or more
Paper holder force
100gf or more
Printer Life
(at 25° and rated energy)
Activation pulse resistance : 100million
Abrasion resistance
: 50Km
Temperature range
Operating : 0°C to 50°C
Storage : -25°C to 70°C
(no condensation)
Humidity range
Operating : 10 to 90% RH
Storage
:10 to 90% RH
(no condensation)
Impact resistance
Package : Bixolon standard package
Height : 75Cm
Directions : 1 corner, 3edges and 6 surfaces
Recommended paper
HANSOL PAPER 65GSM
Dimension (W×D×H)
67.2 * 33 * 17.4 mm
Weight
47g
SMP685 SPECIFICATION
SHEET REVISION
A
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3
2-2.Heat Element Dimensions
The printer contains a thermal head with 384 heat elements
Paper Roll Printable Area
SMP685 SPECIFICATION
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3. THERMAL HEAD
3-1. General Specification
Item
Printing Width
Total Number of Dots
Dot Density
Dot Pitch
Average Resistance
Specifications
48mm
384 Dots
8 Dots/mm (Dot Size 0.125 X 0.0625)
0.125mm
RAVE = 176 Ω ± 4%
3-2. Thermal head Block Diagram
SMP685 SPECIFICATION
SHEET REVISION
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3-3. Block and Activated Heat Elements
STB No.
1
2
3
4
5
6
Dot No.
1 ~ 64
65 ~ 128
129 ~ 192
193 ~ 256
257 ~ 320
321 ~ 384
Dots/STB
64
64
64
64
64
64
3-4. Printed Position of the data
PAPER FEED DIRECTION
PAPER
PRINT SURFACE
DATA IN
DATA
1 2 3 4
382 383 384
PRINTER MECHANISM
DATA INPUT SEQUENCE 1 2 3 4
SMP685 SPECIFICATION
SHEET REVISION
382 383 384
A
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3-5. Electrical Characteristics
Ta = 25℃±10°C
Item
Symbol
MIN.
TYP.
MAX.
Umix
Remark
2.70
-
H
IIH DI
8.5
5.25
36
VDD
0.2VDD
0.5
V
V
mA
V
V
Data Input
Current (DI)
0
-
5.00
-
fDI=fCLK/2
H
L
VH
VDD
IDD
VIH
VIL
L
IIL DI
-
-
-0.5
㎂
STB Input Current
(High Active)
H
IIH STB
-
-
55
㎂
L
IIL STB
-
-
-0.5
㎂
Clock Input Current
(CLK)
H
IIH CLK
-
-
1
㎂
L
IIL CLK
-
-
-1
㎂
Latch Input Current
(LAT)
H
IIH LAT
-
-
1
㎂
L
IIL LAT
-
-
-1
㎂
H
L
VDOH
VDOL
-
0.5
8
5
90
130
-
-
-
ns
-
-
ns
-
-
ns
-
30
36
Print Voltage
Logic Voltage
Logic Current
Input Voltage
Do Voltage (DO)
Clock Frequency
Clock Width
Data Setup Time
Data Hold Time
Data Out Delay Time
LAT Width
LAT Setup time
LAT Hold Time
STB Setup Time
Driver Out Delay Time
0.8VDD
4.0
fCLK
tw CLK
30(50)
tsetup DI 30(70)
thold DI
30(40)
td DO
tw LAT
100
tsetup
100
LAT
thold
50
tsetup
300
STB
tdo
-
SMP685 SPECIFICATION
SHEET REVISION
A
STB,DI,LAT,CLK
㎂
VIH=5V
VIL=OV
V
V
MHz 3.0<= VDD <=5.25
MHz 2.7<= VDD <=3.0
ns
SEE 3.6
ns
ns
3.0<= VDD <=5.25
ns
2.7<= VDD <=3.0
ns
ns
SEE 3.6
3.0<= VDD <=5.25
2.7<= VDD <=3.0
SHEET NO
7
3-6. Time Chart
z If delay time for Driver Out can not be secured enough there is a possibility
that VH would Greatly. Please design the circuit so that VH dose not exceed
peak voltage
SMP685 SPECIFICATION
SHEET REVISION
A
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8
3-7. Maximum Conditions at 25℃
Item
Maximum Conditions
Conditions
Supply Energy
0.20 mJ/dot
S.L.T.=1.25msec
Supply Voltage
8.5 V
VP<7.2V
Substrate Temperature
65℃
Thermistor Temperature
Number of Dots to be
64 dots
Energized simultaneously
Note) Please be noted, the printing intensity variation becomes bigger when the
number of dots firing at same time is more than 64.
3-8. Head Supply Voltage
The input voltage to TPH is as below.
Item
Head Drive Voltage
Head logic Voltage
Voltage Range
7.2V(Max 8.5V)
2.7 to 5.25V
VH
VDD
3-9. Peak Current
The Peak Current at running Head can be calculated as following formula in most
cases. Specially pay attention to a Voltage dropping at circuit.
N х VP
IP = -----------------RAVE
RAVE : Average Resistance(176 Ω ± 4%)
IP
: Peak current (A)
N
: Number of dots that are driven simultaneously
VP
: Head drive voltage
3-10. Control of a Pulse width of Head
3-10-1 Pulse width on Voltage
To secure the stable print quality, apply a control of Pulse width according to Head
running Voltage. Head Pulse width can be gained as below
To
=
Eo х
TO
:
EO
:
RCOM :
RIC :
RLEAD :
(RCOM х N + RAVE + RIC + RLEAD)2
-----------------------------------------------VH2 х RAVE
Pulse per width(ms)
Nominal Energy (0.13mJ)
Common Resistance (0.05Ω)
Driver saturated resistance (9Ω)
Lead resistance (10Ω)
SMP685 SPECIFICATION
SHEET REVISION
A
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9
3-10-2. Pulse width calibration on temperature change
It detects a temperature change by reading a Thermistor Resistance value built in
thermal Head. It is recommended to control energy and calibrate the Pulse width
into thermal Head based on the installation environmental temperature and a
temperature change of thermal Head. When it detects the temperature higher than
60℃, stop the printing process. Pulse per width is calculated the following formula.
Ton = T25 х
(25-TX) х C
{ 1+ -------------------}
100
Ton : Pulse width on working temperature(TX) (ms)
T25
: Pulse width on working temperature 25℃
TX : Working temperature
C
: Temperature calibration constant
(When Hansol 65 GSM paper used, apply C = 1)
Usage temperature and operation volatge
Head Pulse Width
600
550
Pulse (us)
500
450
8.5V
400
350
300
250
200
0
5
10
15
20
25
30
35
40
45
50
55
60
Temperature (℃)
3-10-3. Calculation Sample for the Head Activation Pulse Width
Thermistor
Temperature(℃)
0
5 10 15 20 25 30 35 40 45 50 55 60
Head Pulse
Width(usec)
523 499 476 454 430 408 383 361 337 315 293 268 244
SMP685 SPECIFICATION
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3-10-4. Head History Control
1 Dot line is printed per each 2 steps of motor. A better print quality can be assured
by having longer Off-Time so that TPH may cool down enough.
In case of red box ○1 , it should fire T-On 1 and T-On 2 both to fire Line 1 because
Line 0 was not fired. Line 2 has to fire T-On 1 only and not T-On 2 while Line 1
was fired. In case of blue box ○2 , T-On 1 and T-On 2 both must be fired to fire Line
3 because Line 2 was not fired.
Data 1 for T-On 1 and Data 2 for T-On 2 must be transmitted to TPH before T-On 1
and T-On 2 become Strobe On.
SMP685 SPECIFICATION
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3-11. Thermistor Specification
▷ Rating
1) Operating temperature
2) Time Constant
:
:
-20 ~ +80 ℃
Max. 30 sec (in the air)
▷ Electrical Requirements
1) Resistance R25
2) B Value
:
:
30 kΩ ± 5% (at 25℃)
3950 K ± 2%
RX=R25×EXP{B×(1/TX-1/T25 )}
(T: Absolute Temperature)
200
180
RESISTANCE ㏀
160
140
120
100
80
60
40
20
0
-20
-10
0
10
20
30
40
50
60
70
80
TE M P E R A TU R E ℃
Temperature
R std (kΩ)
Temperature
R std (kΩ)
-20
-15
-10
-5
0
5
10
15
20
25
316.97
234.22
175.07
132.29
100.99
77.85
60.57
47.53
37.61
30.00
30
35
40
45
50
55
60
65
70
75
24.11
19.51
15.89
13.03
10.75
8.92
7.45
6.25
5.27
4.47
SMP685 SPECIFICATION
SHEET REVISION
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3-12 Detecting Abnormal Temperatures of the Thermal Head
To protect the thermal head and to ensure personal safety, abnormal thermal head
temperatures must be detected by both hardware and software as follows:
■ Detecting abnormal temperatures by software
Design software that will deactivate the heat elements if the thermal head
thermistor (TM) detects a temperature 60°C or higher and reactivate the heat
elements when a temperature of 50°C or lower is detected. If the thermal head
continues to be activated at a temperature higher than 60°C, the life of the
thermal head may be shortened significantly.
■ Detecting abnormal temperatures by hardware
If the Control unit malfunctions, the software for detecting abnormal
temperatures may not function properly, resulting in overheating of the thermal
head.
Overheating of the thermal head may cause damage to the thermal head or injury.
Always use hardware in conjunction with software for detecting abnormal
temperatures to ensure personal safety. (If the Control unit malfunctions, it
may be impossible to prevent damage to the thermal head even if a detection of
abnormal temperature is detected by hardware.)
Using a window comparator circuit or similar detector, design hardware that
detects the following abnormal conditions:
1) Overheating of the thermal head (approximately 100°C or higher).
2) Faulty thermistor connection (the thermistor may be open or short-circuited).
If (1) and (2) are detected, immediately deactivate the heat elements.
Reactivate the heat elements after the temperature of the thermal head has
returned to normal.
SMP685 SPECIFICATION
SHEET REVISION
A
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4. PAPER FEED MOTOR
4-1. Basic Specifications
Item
Type
Drive method
Excitation
Rated voltage
Amount of paper feed
Resistance
Specification
PM 20 Steps type stepping motor
Bipolar method
2-2 Phase
DC4.5V~8.5V (for drive)
0.0625mm per 1 step
10Ω ±5%
4-2. Example of Driving Circuit
Motor driver IC : Rohm BA6845FS
4-3. Excitation Sequence
▷ Paper is fed in a forward direction when the motor shaft is rotating in the
CCW (Counter Clock Wise) when seen from the motor gear side
Signal Name
PH1
PH2
PH3
SMP685 SPECIFICATION
Step 1
H
H
Sequence
Step 2
Step 3
H
L
L
L
H
SHEET REVISION
A
Step4
L
H
SHEET NO
14
Signal Name
Step 1
L
H
H
L
OUT1
OUT2
OUT3
OUT4
Sequence
Step 2
Step 3
H
H
L
L
H
L
L
H
Step 4
L
H
L
H
PH 1
PH 2
PH 3
Print step
1DOT LINE
Pause standby
Stop step
Print step
Start step
※ Precautions for Designing the Motor Control Circuit and Software
▷ To stop the motor, excite for a single step period with a phase that is
the same as the final one the printing step
▷ In the pause state, do not excite the step motor to prevent the motor
from overheating
SMP685 SPECIFICATION
SHEET REVISION
A
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4-4. Sample For Drive Frequency
The following chart gives the maximum paper feed speed vs the step motor
Voltage(at 25℃)
Drive Frequency
Operation Voltage
Feed Speed
5.0V
850 PPS
53 mm/s
7.2V
1200 PPS
75 mm/s
8.5V
1440 PPS
90 mm/s
4-5. Acceleration Control
Number of
Steps
Start
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
SMP685 SPECIFICATION
Speed
(pps)
200
211
342
447
528
602
669
730
787
840
890
938
984
1027
1069
1110
1148
1187
1224
1259
1290
1328
1360
1392
1422
1432
1440
SHEET REVISION
Step Time
(㎲)
5000
4728
2922
2234
1894
1660
1494
1369
1270
1190
1123
1066
1016
973
935
901
871
842
817
794
775
753
735
718
703
698
694
A
SHEET NO
16
5. PAPER DETECTOR
The printer has a built-in paper detector (reflection type photo interrupter) to detect
whether paper is present or not.
An external circuit should be designed so that it detects output from the paper
detector and does not activate the thermal head and motor when there is no paper.
Doing not so may cause damage to the thermal head or platen roller or shorten the
life of the head significantly. If the motor is drove when it is out-of paper, a load is
put on the reduction gear and the life of the gear may be shortened
5-1. Absolute Maximum Rating (TA = 25℃)
Parameter
Forward Current
Input Diode
Reserve Voltage
Power Dissipation
Collector-Emitter
Voltage
Emitter-Collector
Output Photo
Voltage
Transistor
Collector Current
Power Dissipation
Operation Temperature
Storage Temperature
SMP685 SPECIFICATION
Symbol
IF
VR
PD
Rating
50
5
75
Unit
mA
V
mW
VCEO
30
V
VECO
3
V
IC
PC
Topr
Tstg
20
50
-20 to +85
-30 to +100
mA
mW
℃
℃
SHEET REVISION
A
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5-2. Photoelectrical Characteristics (Ta = 25℃)
Parameter
Input
Diode
Output
Transistor
Sym.
Condition
Min
Type
Max
Unit
Forward Voltage
VF
IF = 10mA
-
-
1.3
V
Reverse Current
IR
VR = 5V
-
-
10
㎂
Dark Current
ICEO
VCE=10V , IF=0
-
-
0.2
㎂
IC
IF=10mA VCE=5V
180
-
440
㎂
Leakaged Current
ILEAK
IF=10mA, VCE=5V
-
-
0.2
㎂
Fall Time
Rise Time
tf /tr
VCC=5V, IC=10mA
RL=100
-
25/30
-
㎲
Collector Output
Current
Coupied
5-3. Sample External Circuit
Paper end sensor Detection
PE_SENSOR Output signal level
In case of paper exist
Low
In case of no paper
High
SMP685 SPECIFICATION
SHEET REVISION
A
SHEET NO
18
6. PIN LAYOUT FOR FPC
1mm 30Pin FPC (Sensor / Motor / Head)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Signal
PS_IN
VSEN
PS_OUT
NC
NC
Vp
Vp
DI
CLK
GND
GND
STB6
STB5
STB4
VDD
TH1
TH2
STB3
STB2
STB1
GND
GND
/LAT
DO
Vp
Vp
OUT2
OUT1
OUT3
OUT4
Function
Cathode for photo interrupter
Photo interrupter power
Emitter for photo interrupter
Non connector
Non connector
Print Supply Voltage
Print Supply Voltage
Data IN
Clock
Ground
Ground
Strobe 6
Strobe 5
Strobe 4
Logic Voltage
Head Thermistor
Head Thermistor
Strobe 3
Strobe 2
Strobe 1
Ground
Ground
Latch(Low Active)
Data OUT
Print Supply Voltage
Print Supply Voltage
Stepping Motor signal
Stepping Motor signal
Stepping Motor signal
Stepping Motor signal
Printer FPC
SMP685 SPECIFICATION
SHEET REVISION
A
SHEET NO
19
7. OPERATION SEQUENCE
SMP685 SPECIFICATION
SHEET REVISION
A
SHEET NO
20
8. MECHANISM DIMENSIONS
SMP685 SPECIFICATION
SHEET REVISION
B
SHEET NO
21
9. EXPLODED VIEW
SMP685 SPECIFICATION
SHEET REVISION
B
SHEET NO
22
10. PART LIST
No
Parts No
Name
1
KP05-00023A Frame lower
2
KM05-00019A Frame upper
Specifications
SECC T1.0
Q’ty
A/S
1
N
1
N
1
N
PC-GF10
TPH(AOI)+Bracket
AE05-00021A Ass’y Bracket TPH(AOI)
+Sensor+Motor
TPH(Rohm)+Bracket+
AE05-00021R Ass’y Bracket TPH(Rohm)
Sensor+Motor
KS05-00009A Spring pressure
SUS303
1
N
2
N
5-1
KS05-00011L Spring roller L
SUS303
1
N
5-2
KS05-00011R Spring roller R
SUS303
1
N
6
KM05-00018A Frame gear
POM
1
N
7
KM05-00010A Gear deceleration A
POM
1
N
8
KM05-00011A Gear deceleration B
POM
1
N
9
KM05-00012A Gear deceleration C
1
N
1
Y
1
N
3
4
11
KC05-00014A Screw- Machine
POM
SUS303+Silicone+Washer
+ Bush bearing
M1.7*2
12
KC05-00015A Screw- Machine
M1.7*3
1
N
13
KC05-00007A Screw-Tapping
M1.7*7
1
N
14
6002-001052 Screw-Tapping
M1.7*3
4
N
PET
1
N
10
15
AR05-00018A Ass’y Platen roller
KA05-00011A Label serial
SMP685 SPECIFICATION
SHEET REVISION
B
SHEET NO
http://www.fosvos.com/bixolon/
23