Star MP212FP-24-A Operating instructions

DOT MATRIX PRINTERMECHANISM
/WP212FP=24=A
tWP216FP=24-A
SPECIFICATION
AND
OPERATION MANUAL
~&@l~
STARMICRONICSCO LTD

NOTICE
●All rights reserved. Reproduction of any part of this manual in any form whatsoever,
without STAR’s express permission is forbidden.
●The contents of this manual are subject to change without notice.
●All efforts have been made to ensure the accuracy of the contents of this manual at the
time of going to press. However, should any errors be detected, STAR would greatly
appreciate being informed of them.
●The above notwithstanding, STAR can assume no responsibility for any errors in this
manual.
@copyright 1994 Star Micronics Co.,LTD.

CONTENTS
1. GENERAL DESCRIPTION .-..-.......-.....-.-.-.= ..........-...=---....--. .1
2. CONSTRUCTION ...................................................................................................................... 2
2.1 Configuration ............................................................................................................... 2
2.2 Principle of Operation ................................................................................................. 2
3. GENERAL SPECIFICATIONS .......-.=--~-~fl~~=-~-~~~~ ---.--.-..=........-.-5
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
Printing Specifications ................................................................................................. 5
Paper Specifications ..................................................................................................... 6
Ink Ribbon Specifications ............................................................................................ 7
Connector Specifications .............................................................................................. 9
Print Head Specifications ~=u-..--uu.--.~~-~~.~.~ ~~~~=~~..~~-~~~.-~..--. 11
Print Timing Specifications ....................................................................................... 15
Timing Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............-=......= 16
Motor Specifications .................................................................................................. 18
Solenoid Specifications m-titi.ti~-u~mti----------- ~~=--.~~~~~~~~~~~~~=~=- -. 19
Timing Signal Detector Specifications fi.....m..m.....-....m..~......-.....-...-.......-....=..... 21
Home Position Detector Specifications ...................................22
Paper-out Detector Specifications .. .... ...... ..... ... ....... ... . ..........n....-.....-.....~ ..... 22
Dimension and Weight .......................----------------------- ..23
4. RELIABILITY SPECIFICATIONS ...................................................-....-...26
5. SETTING THE RIBBON CARTRIDGE ........................................27
6. SETTING THE PAPER ....................................................--28
6.1 Setting the Paper .......................................................28
6.2 Removing the Paper .................................................................................................. 28
7. INSTALLATION ......................................................................................................................29
8. OPERATIONAL NOTES ...........................-.....-..-..-=-.=. ----- ..33
8.1 Power ON/OFF Note .........................--..........--.=----- ...33
8.2 Carriage Motor Protection Method (Against Mechanical Errors) .............34
8.3 Other Notes ......................................-...-...=--. ...... 34
9. POWER SUPPLY CAPACITY ....................................................35
9.1 24V Line ...........................................................35
9.2 5VLine.~~---tif~~~titi~i~ ----------------------- ---------------------- 35

1. GENERAL DESCRIPTION
MP21O series is the mechanism of serial impact dot matrix printer having the applications for the
electronic equipment, such as in POS, or data recorder, and so on.
Model Name Notation
EImlml 24“
T
1Voltage
24: 24VDC
Paper-outdetector
P: Paper-outdetectoroperates
~Paperfeed methodI
F: Frictionfeed method
~Mechanismtwe[
I., 1
2: Monochromatic16CPI 42 columnsper line
6: 2colors,16 CPI, 42 columnsperline
~PrintertweI
I.I
1:TYPE 1
MP200 SeriesPrintermechanism
-1-

2. CONSTRUCTION
2.1 Configuration
This printer mechanism is composed of the following components.
Printer mechanism
:
Drive unit, gears, and carriage unit
Detectors
%
Timing detector
Home position detector
Paper out detector
Ribbon position detector (MP216)
Paper feed mechanism
Ink ribbon wind mechanism
Print head unit
Frame unit
2.2 Principle of Operation
2.2.1 Drive
This printer mechanism moves the print head, paper feed, ribbon shift (MP216) and feeds ribbon
with the motor.
2.2.2 Print head movement
The rotation of the motor is transmitted to drive shaft through the reduction gears. The carriage
makes lateral reciprocal movements along agroove that is carved on this drive shaft, consequently
moving the print head.
2.2.3 Print timing
Printing is done when the timing signal is generated synchronized with the rotation of the motor,
based on the home position signal.
2.2.4 Ribbonfeed
The ink ribbon is housed inside aribbon cartridge in endless fashion. Aribbon feed roller is turned
by the rotation of the motor whereby the ink ribbon is wound up.
2.2.5 Paperfeed
Paper feeding is done by the rotation of the motor turns on the line feed solenoid to activate the
spring clutch and to turn the gear.
2.2.6 Ribbonshift
In case of MP216, make the motor rotate to make electricity flow to the ribbon solenoid so that
the spring clutch operates and so that the cam gear rotates half aturn, and then change to aribbon
of another color.
-2-

Can
Prinl
n
‘i
t
hirning detector
;
v
Motor
Connector
‘\
\
Ribbon
cartridge
Drive shaft
I_
Home position detector
feed solenoid
Paper-out detector
Fig. 2-1-1 External view of MP212
-3-

Ca
Print
Ribbon shift solenoid Timing detector
Platen
Paper-out
‘$
! :,\ --
I
R-1111 “r-
Motor
Connector
/
.- Ribbon cartridge
/
\Ribbon position
.detector
‘Drive shaft
‘Home position
detector
feed solenoid
Fig. 2-1-2 External view of MP216
-4-

3. GENERAL SPECIFICATIONS
3.1 Printing Specifications
Item Specifications
Printing method
Font configuration
Print direction
Print speed
Paper feed speed
Head wire
Line space
Impact dot matrix printing
7X7(half dot) or 9X7(half dot)
Bidirectional
Approx. 2.5 lines/see. (besides when shifting ribbons)
Approx. 9lines/see. (continuous feeding)
cjO.33mm in diameter
1/6 inch fixed
1. In the bidirectional printing, the horizontal drift is liable to occur more than in the
unidirectional printing.
Dot, Column space Specifications
1Paper width 3.0 inch (76mm)
2Font configuration 7x7 9x7
(H XV) (halo (halo
3CPI 16 13.4
4Column number 42 35
5Dot space Hmm (a) 0.316 0.316
Vmm (b) 0.423 0.423
6Character size Wmm (c) 1.28 1.59
Hmm (d) 2.87 2,87
7Column space mm (e) 1.58 1.90
8Total no. of dots 210 210
9Print area mm 66.0 66.0
CPI: Character Per Inch
Fig. 3-1 Character size (7 X7font)
-5-

3.2 Paper Specifications
Item
Paper type
Paper width
Diameter
Thickness
Inside diameter
Others
Print area
Specifications
Ordinary bond and carbonless copy paper (Roll paper)
76+0.5mm (3.0 inch)
Max. 85mm (3.35 inch)
Single: 0.07 mm to 0.10 mm
Copies: Original +1copy
Total thickness within O.14mm, with each sheet 0.05 to 0.08mm
thick
Original +2copies
Total thickness within 0.2mm, with each sheet 0.05 to 0.08mm
thick
12* lmm
No glue between the paper and the inside diameter
Shown in Fig. 3-2
Leftmargin Printarea Rightmargin
kPaperwidth 4
Fig. 3-2 Paper spec. &print area
-6-

3.3 Ink Ribbon Specifications
MP212
Item Specificaitons
Type Special cartridge
Color Purple (standard) or black (option)
Ribbon material Nylon 66 #40 denier
Ribbon size Width: 13mm
Model No. Purple (standard): Part No.3O98OO1O
Part Name: INK RIBBON CARTRIDGE RC200P
Black (option): Part No.30980110
Part Name: INK RIBBON CARTRIDGE RC200B
Ribbon life Purple: Approx. 3,000,000 characters
Black: Approx. 1,200,000 characters
Fig, 3-3-1 Ink ribbon cartridge
–7–

MP216
Item
Type
Color
Ribbon material
Ribbon size
Model No.
Ribbon life
Specificaitons
Special cartridge
Black and red
Nylon 66 #40 denier
Width: 13mm
Black and red: Part No.3O98O21O
Part Name: INK RIBBON CARTRIDGE RC200BR
Black: Approx. 600,000 characters
Red: Approx. 300,000 characters
Fig. 3-3-2 Ink ribbon cartridge
-8-

3.4 Connector Specifications
Parts No. Mating Cable
BURNDY CORPORATION SUMITOMOELECTRIC INDUSTRIES, Ltd.
HLEM23R-1 SUMI CARD
SMCD-23X60-BDX1O-P1.25-S6-M.UL2896
Manufacturer BURNDY CORPORATION SUMITOMOELECTRIC U.S.A. INC.,
(USA) (U.S.ELECTRONICS GROUP) (NewYork Office)
51 Richards Avenue 551MadisonAvenue,New York,
Mail: PO. Box 5200Norwalk. NY 10022,U.S.A.
CT 06856,U.S.A. TEL :[phone]
TEL :[phone] FAX :[phone]
FAX :[phone],6228
(EC) FRAMATOME CONNECTORS SUMITOMOELECTRIC EUROPE S,A.
DEUTSCHLANDGMBH (LondonOffice)
Heinrich-Hertz-Strasse130 Dorset Square,LondonNW1 6QJ,
D40699Erkrath 1,Germany England,U.K.
TEL :[phone] TEL :[phone]
FAX :[phone] FAX :[phone]
MP212
II IHD #4
2IHD CMN(#4) I
3]Thermistor
Fig. 3-4-1 Connector connections
-9-

r,IJ “wlr+(#4)
Thermistor
&Thermistor L,
6HD #5 man ,
7!HD #2 tma-o t
8LHD #3 m
9IHD #7 mI
10 HD #1 mum ,,
11 HD CMN 4,
12 HD CMN I
13 S-GND ~1T T 3
14 RS-siq fLA
15 CR MOTOR (-) --@l
16 PE-sig fw
17 RS-SOL m,,
18 HP-sig f\ 1} ~À
19 LF-SOL m4I
20 T2-sig (\
21 T1-sig /\
22 +5V f\ )1
23 CMN(VH)
Fig. 3-4-2 Connector connections
-10-

3.5 Print Head Specifications
3.5.1. BasicSpecifications
Item Specifications
Supply voltage 24VDC& 1.2V
Responsefrequency 900Hz or less
Pulse width See Fig. 3-6
Coil resistance 20.6+ IQ (includes cable resistance)
Peak current 0.9A/solenoid (for 24VDC, 360LM)
Timing Energizing is begun at the falling of the output signal of timing signal 1in
Fig. 3-18. Energizing cycle shall be 2pulses or more of timing signal 1.
ControlSignal
Min. 1111ps
360-td d
—
PrintPulse
prin~so,enold *
CurrentWaveform 1-l
360Fs
Typ. Max.
Peak current 0.9A 1.OA
Power 4.8 mj\dot 5.3 mj/dot
Consumption
Condition 24V 25.2V
360Ps 353ps
Transistor’s turn off delay time
(td): 2PS
Fig. 3-5 Current waveform
The relation of the supply voltage and the pulse width is shown in Figure 3-6.
380
370
360
350
340
0
-‘(380)
-(370)
----
(353)
,(343)
i-% ~
O(22.8)23.0 24.0 25.0 (25.2)
SupplyVoltage(V)
Fig. 3-6 The relation of the supply voltage and the pulse width
Set the pulse width inside of the range of the hachures as shown in Figure 3-6.
-11-

Azener diode isemployed for suppressing the spike voltage that appears when the transistor isturned
OFF. An example of drive circuit is shown in Figure 3-7. In this circuit, atransistor with zener
diode (zener voltage 60~”W) is used between the base and collector.
CN1
+5V VH(24V) ~
tuTR1 2SD2041 (ROHM)
mCMN ~
ii
Print
Solenoid
ControlSignal A
r
.- —-. TR1 ;
\\
PrintPulse \:
uI:
/:
/
/
\bF
R2 330Q
VH 23V+ VcE(Sat.) of
TR1 =24V
Fig. 3-7
3.5.2 Pre-fire
This operation is the warming up
‘-—--Q1
GND ~
Print solenoid drive
of printer, in which
circuit (example)
the operation of aneedle wire is improved
by applying to it micro vibrations. Pre-fire is executed under the following conditions. Since the
pulse width is short, no print operation takes place.
Operation timing When power is turned ON
Supplyvoltage 24VDCf 1.2V
Frequency 900Hz
Pulse width 120*5/.&s
Count 32
-12-

3.5.3 Headtemperaturesensor circuit
When the printer prints continuously for aprolonged time, the print head faces the risk of getting
overheated. There, this head temperature sensor circuit finds out the internal temperature of print
head by sensing the resistance value of athermistor located inside the head.
Make the printer execute the following operations, according to the internal temperature of its print
head.
a. T< 105”C
.Execute regular print operation (bidirectional printing).
b. 105°CsT
●Stop print operation. As soon as the internal temperature of print head lowers down to below
105”C, resume the bidirectional printing of above item ‘a’.
Below is given aconversion table of internal temperature of print head and resistance values of
thermistor. The resistance value of thermistor is sensed every alternate line.
AN voltage is controlled to set 3.868V at 105”C.
Temp. Resistance value of thermistor (Kfl)
(“c) Min. Typ. Max.
T105 2.622 2.926 3.232
One example of head temperature sensor circuit is given in Fig. 3-8. This circuit senses the
temperature by employing an A/D converter built inside CPU.
TH ThermistorTM541OH(HITACHI)
Vcc 3[R1 10KO *l~o
+5V +tcl O.OIWFCeramiccapacitor (noiseelimination)
VREF *+5V TH
5!
AN
cl RI
CPU 777 A
Fig. 3-8 Head temperature sensor circuit (example)
-13-

3.5.4 Print Duty
When you dont’t use the head temperature sensor circuit, you can print under the maximum print
ratio Nas shown in Figure 3-9. No matter what pattern you may use, set the maximum print ratio
under N. Even if you set the maximum print ratio over N, the printer prints, but it gives to printer
the possible damage. However, when the head temperature sensor circuit is activated and the print
ratio is over this maximum ratio, the printer stops printing.
950L 940
8h;:””’
750 -:
700 -;
600 -:
550 -[
500 -~
22.8 24.0 25.2
25 (“C)
Supplyvoltage(V)
Fig. 3-9 Print duty (without the head temperature sensor circuit)
When you print by using the wires evenly, the print duty of the continuous print is curved as shown
in Figure 3-9. The possible dot number Dof acharacter is calculated by the numerical formula.
~=N(Print Ratio) XT(Print time per line includesthe time of the paper feed [see])
L(numberof character per line) [dot/chara]
When you use the specific wires many times, make sure the maximum print ratio is not over the
print duty shown in Figure 3-10. However, when the head temperature sensor circuit is activated,
and the print using 5or more specific wires is over this maximum ratio, the printer stops printing.
IAtmosphericTemperature25(”C)
900 /
50 (“c)
Numberofthespecificwires
Fig. 3-10 Print duty (using the specific wires many times)
The print duty executed under the supply voltage 24.OVis shown in Figure 3-10.
-14-

3.6 Print Timing Specifications
This printer uses timing signal 1as the counting pulse of the solenoid and motor control. The
numbering Tn of the timing signal 1is obtained as follows.
Detect the first rise of timing signal 2after the home position signal has risen, and the first drop
of timing signal 1so that it becomes T-1. Then the next timing signals drop so that they become
T2, T3, and T4.
Print timing is shown in the figure 3-11.
Please pay attention the following regarding these print timings. The make-time cycle of the same
pin should be over 2pulses at timing signal 1.
@7X7dot matrix (half dot)
P’n““‘Ocammoooooo-----------------’
20.000000000
3oooooo~o
4ooo.(-)~@~~@()
5000
70@@goo@@goo -----------------
Print direction
~ii~~l! 1,11 ‘j ‘~ ‘j ‘j ‘j ‘j ‘j ‘j ‘j t
SeT96 T96 T95 T95 T95 T95 195 194 T94 7944
T,63T96? T959T957T955T953 T951 T949T947T945
@9X7dot matrix (half dot)
Pin NO. I
2
3
4
5
6
7
‘iming t$jt$jt jt$jtjtjtjt$jt
sigflai 1,9, ,,, ,9, 7,, ,% 7,, ,,, TM T’34 194 T94 T94 T940
T963Ts, ,T,5, T,57T955T953 T,, ,T,4, T,47T945T943 T941
+
(left -- right) tjtjtjt$$j
155 T55 T55 T,, 1,4 T,.
,553,551 T54, T,47T,4, T543
Print direction
*
(left +right)
.--------.----
--------------
Print direction
(-ht)
column 35
t$jt$jtjtj
,5, T,, T,, ,5, ,54 T,,
,553,55, r54, T,47T545T543
Fig. 3-11 Printing timing
-15-

1
—
—
1
I
a
L
g
YA
-
—,
(9
cc..
e
~
‘-IQ
C-J
+
P
C-J
c1
*.
+
u+ I
.-
“c=!
‘“>
r-’
—
—
~
3
0
OJ
0
—
-16-