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-