Star Micronics MP111MP-24G-A Operation Manual Download Page 22

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– 19 –

Notes: Adjust motor speed with VR

adjustment and T1 signal to

1660 Hz

30 Hz.

Fig. 3-15 Motor drive circuit (example)

10 K

Ω

TR1

2SA950

3.3 K

Ω

TR2

2SC1740

6.8 K

Ω

1/6 W

TR3

2SA1175

2.2 K

Ω

TR4

2SD882

1.2 K

Ω

TR5

2SB1359

10 K

Ω

TR6

2SD1637

20 K

Ω

IC1

SN74LS05

0.47

F (Film)

IC2

M51971L (MITSUBISHI)

0.033

F (Film)

6.8 K

Ω

0.022

F (Film)

3.8.1 FG Circuit

The motor control circuit with a Frequency Governor circuit maintains the printing speed at the settings. It is

mainly constructed of a Speed Control IC (IC2) and a Power Transistor TR6 shown in Fig. 3-15. It measures

the number of rotations of the Carriage Motor from the Timing Signal 1. This signal is then compared to the

standard signal to control the speed by controlling the voltage energizing the Carriage Motor.

3.8.2 Merits of the FG Circuit

The FG circuit maintains a stable output regardless of the environment where it is being used.

It maintains stability even at high speeds.

It protects the head because the speed is stable.

Summary of Contents for MP111MP-24G-A

Page 1: ...DOT MATRIX PRINTER MECHANISM MP111MP 24G A MP115MP 24G A SPECIFICATION AND OPERATION MANUAL ...

Page 2: ... 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 1999 Star Micronics Co LTD ...

Page 3: ...pecifications 21 3 11 Timing Signal Detector Specifications 22 3 12 Home Position Detector HP sig Specifications 23 3 13 Paper out Detector PE sig Specifications 23 3 14 Ribbon Position Detector RS sig Specifications MP115MP only 24 3 15 Dimension and Weight 24 4 RELIABILITY SPECIFICATIONS 27 5 SETTING THE RIBBON CARTRIDGE 28 6 SETTING THE PAPER 29 6 1 Setting the Paper 29 6 2 Removing the Paper 2...

Page 4: ...nt such as for ECR Model Name Notation MP1 1 1 M P 24 G A G FG compatible Voltage 24 24 VDC Paper out detector P Includes the paper out detector Paper feed method M Friction method and stepping motor Mechanism type 1 Monochromatic 16 9 CPI 32 columns per line 5 2 colors 16 9 CPI 32 columns per line Printer type 1 Type 1 MP100 Series printer mechanism ...

Page 5: ... feeds paper and feed 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 a groove 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 mot...

Page 6: ... 3 Fig 2 1 MP111MP External view Home Position Detector Paper Guide A Paper Guide B Platen Paper out Detector Connector Ink Ribbon Cassette Print Head Motor Timing Detector Drive Shaft PF Motor Carriage ...

Page 7: ...ternal view Home Position Detector Paper Guide A Paper Guide B Platen Paper out Detector Connector Ink Ribbon Cassette Print Head Motor Timing Detector Drive Shaft PF Motor Carriage Ribbon Position Detector Ribbon Solenoid ...

Page 8: ...r ø 0 3 mm Line space 1 6 1 8 1 12 1 72 1 144 inches Feed paper more than one line before printing graphics or vertically expanded characters Note 1 When performing bidirectional printing horizontal drift is likely to occur in unidirectional printing Details of Character Dimentions 1 Paper width 2 25 inches 57 5 mm 1 75 inches 44 5 mm Optional 2 Fonts configuration H x V 7 x 9 5 x 9 7 x 9 5 x 9 ha...

Page 9: ... 5 mm 1 75 inch possible Roll diameter Max 85 mm 3 35 inch Thickness Single 0 07 mm to 0 10 mm Copies Original 1 copy Total thickness max 0 14 mm with each sheet 0 05 to 0 08 mm thick Original 2 copies Total thickness max 0 2 mm with each sheet 0 05 to 0 08 mm thick Core diameter 12 1 mm Other No glue between the paper and the core diameter Fig 3 2 Paper spec Print area ...

Page 10: ...ard Ribbon cassette RC100 P Black optional Ribbon cassette RC100 B Ribbon life Purple Approx 1 500 000 characters Black Approx 800 000 characters Note There is the possibility of damaging the printer by using ribbon cassettes that have not been speci fied We do not offer warrantee for problems that occur from using the wrong ribbon cassette Fig 3 3 Ink ribbon cartridge RC100 P B ...

Page 11: ... and red Ribbon cassette RC100BR Ribbon life Black Approx 400 000 characters Red Approx 250 000 characters Note There is the possibility of damaging the printer by using ribbon cassettes that have not been speci fied We do not offer warrantee for problems that occur from using the wrong ribbon cassette Fig 3 4 Ink ribbon cartridge RC100BR Red Black ...

Page 12: ...0 HD 7 11 HD 8 12 HD 9 13 LF ø4 14 LF CMN A B 15 LF ø2 16 LF ø1 17 LF ø3 18 RS Sig Ribbon shift MP115M only 19 S GND 20 PE Sig 21 CR MOTOR 22 HP Sig 23 RS SOL Ribbon shift MP115M only 24 T2 Sig 25 T1 Sig 26 5V 27 NC 28 CR MOTOR CMN VH Connector Type NIPPON FCI HLEM28R 1 Connection Drawing See next page ...

Page 13: ...3 5 Connector connections M LF ø1 16 LF CMN A B 14 LF ø3 17 LF ø2 15 LF ø4 13 5V 26 T1 sig 25 T2 sig 24 HP sig 22 PE sig 20 RS sig 1 18 S GND 19 M RS SOL 1 23 CR MOTOR CMN VH 28 NC 27 CR MOTOR 21 1 MP115MP only ...

Page 14: ...tated character Rotated character Backward printing Backward printing Forward printing Forward printing 7 9 half font 5 9 font 1st chara 26th chara 2nd chara 26th chara 1st chara 32th chara 1st chara 1st chara 32th chara 2nd chara 31th chara Note The electric cycles for identical 1 pins has 2 pulses or more There Tn Tn 1 electricity is impossible This printer uses a timing signal of 1 as the total...

Page 15: ...g 1600 Hz Approximately 3 84 lines sec 1710 Hz 3 96 lines sec Paper feed action must be carried out within the carriage reversal area ON T0 T2 Forward print area 322 pulses 1 6 Inch 24 Steps Forward print area After print Motor OFF Timing Backward print area 322 pulses Carriage reversal area 110 pulses TYP 66 3 ms MIN 64 3 ms TYP 66 3 ms MIN 64 3 ms Carriage reversal area 110 pulses T4 T1 T 1 T3 T...

Page 16: ... color printing on the MP115 Fig 3 8 Release action Release Action MOTOR TIMING SIG 1 RIBBON SHIFT RIBBON SHIFT GEAR ON OFF ON OFF ROTATE STOP HIGH LOW 18 Pulses T30 T1 T2T3 T336 288 Pulses Ribbon shift gear rotation 18 x 6 x 32 12 288 pulses ...

Page 17: ...A solenoid for 24 VDC 375 µs Timing Energizing is begun at the fall of the output signal of timing signal 1 Energizing cycle shall be 2 pulses or more of timing signal 1 Typ Max Peak current 1 0 A 1 1 A Condition 24 V 26 4 V 375 µs 340 µs Fig 3 9 Current waveform Fig 3 10 Head Energizing Time Head Power Supply Voltage Transistor s turn off delay time td 2 µs µs 415 395 375 355 340 21 6 24 25 2 22 ...

Page 18: ...F The following figure shows and example of the drive circuit With this circuit we use a transistor equipped with a zener diode zener voltage 60 10 5V between the base and collector TR1 2SD2041 ROHM R1 1K Ω R2 330Ω VH 23V TR1 for VCE sat 24 V Fig 3 11 Example of Print Solenoid Drive Circuit HV 24 V ...

Page 19: ... temperature detector Therefore use the printer within the maxi mum printing ratio shown below If you print exceeding this printing ratio you can damage the printer Fig 3 12 Print duty The figure above shows the print duty that is possible with continuous printing when each wire is used an equivalent number of times In this case you can calculate the possible dot count for D per character using th...

Page 20: ...shown in Fig 3 13 Fig 3 13 shows operation at 24 0V Fig 3 13 Print duty specific wires 1200 1100 1000 900 800 700 600 500 400 Print Ratio N dot sec Number of the specific wires Ambient Temperature 50 C Ambient Temperature 25 C 1 2 3 4 5 6 7 8 500 750 850 950 1030 1100 1155 1200 380 550 615 680 730 785 840 890 ...

Page 21: ... 18 3 8 CR Motor Specifications Item Specifications Type DC motor Supply voltage 24 VDC 1 2 V Start current Max 1 6 A Average current Approx 0 15 A Fig 3 14 Current waveform of the motor ...

Page 22: ...th a Frequency Governor circuit maintains the printing speed at the settings It is mainly constructed of a Speed Control IC IC2 and a Power Transistor TR6 shown in Fig 3 15 It measures the number of rotations of the Carriage Motor from the Timing Signal 1 This signal is then compared to the standard signal to control the speed by controlling the voltage energizing the Carriage Motor 3 8 2 Merits o...

Page 23: ...e slow down area so that the final 2 steps become 300 pps and 200 pps The other areas are set to 350 pps drive c When paper feed amount is over 9 steps and less than 18 steps Set the inital 4 steps so that they become 350 pps slow up area Set the slow down area so that the final 4 steps become 500 pps 400 pps 300 pps and 200 pps The other areas are set to 550 pps drive d When paper feed amount is ...

Page 24: ...cations Supply voltage 24 VDC 1 2 V Pulse width T1 sig 18 pulses Approx 12 ms Coil resistance Approx 57 0 Ω Average current Approx 400 mA Fig 3 17 Current waveform of RS SOL Fig 3 18 RS SOL drive circuit example TR1 2SD2010 ROHM D1 DSM1D1 R1 1 kΩ R2 330 Ω VH 23 V TR1 VCE sat 24 V ...

Page 25: ...ming signal 1 is generated 18 pulses and timing signal 2 is generated 1 pulse every time the motor rotates by 1 turn PS Photo interruptor ON1004R MATSUSHITA TR1 2SC1740 R1 4 7 kΩ R2 56 kΩ R3 150 Ω C1 2200 PF Fig 3 19 Circuit of timing signal 1 example PS Photo interruptor ON1004R MATSUSHITA TR1 2SC1740 R1 4 7 kΩ R2 56 kΩ R3 150 Ω C1 2200 PF Fig 3 20 Circuit of timing signal 2 example ...

Page 26: ...turning on the power etc Detect the L level after having detected the H level of the HP sig and then after having carried out 81 pulse counts for the T1 sig detect the H level 2 When the T1 sig is decided during continuous operation of the motor Detect the L level of the HP sig and then after having counted 847 pulses of the T1 sig detect the H level 3 13 Paper out Detector PE sig Specifications T...

Page 27: ...022 µF Fig 3 23 Example of ribbon position detection circuit In order to improve the reliability we recommend that the RS sig is detected while the motor is off 3 15 Dimension and Weight See Fig on the next page for external dimension of the printer mechanism Weight of printer mechanism MP111MP approx 410 g excludes the ribbon cartridge MP115MP approx 450 g excludes the ribbon cartridge Weight of ...

Page 28: ...gure 3 24 MP111MP External dimension unit mm Paper Entrance Paper Entrance Paper Entrance Paper Entrance Paper Entrance Connector Position Print Center Print Area Paper Guide Wdith Paper Entrance Print Center ...

Page 29: ...gure 3 25 MP115MP External dimension unit mm Paper Entrance Paper Entrance Paper Entrance Paper Entrance Paper Entrance Connector Position Print Center Print Area Paper Guide Wdith Paper Entrance Print Center ...

Page 30: ...ral specification The printer must satisfy gen eral specification after test ing The printer must satisfy gen eral specification after test ing When you put the printer mechanism to the quality control test use the printer under the environment as shown at the left 4 million lines MCBF Approx 70 million characters 0 C to 50 C 10 to 80 RH at 40 C no condensation 20 C to 70 C 5 to 95 RH at 40 C no c...

Page 31: ...Place the ribbon cartridge and press it to set in the Unit When the ribbon cartridge is hard to set to the proper position turn the ribbon feed knob in the direction of the arrow Insert the ink ribbon between the print head and the platen 3 Turn the ribbon feed knob of ribbon cartridge in the direction of the arrow to remove slack in the ribbon ...

Page 32: ...nsert the paper squarely into the paper guide 3 Turn the paper feed motor to feed the paper 4 When the paper comes out of the paper outlet turn the feed motor off and stop the paper feed 6 2 Removing the Paper 1 Cut the paper behind the paper guide 2 Turn the paper feed motor to remove the paper ...

Page 33: ... between the roll paper holder and paper thrust direction to within 2 mm and ensure that the roll paper holder doesn t hold back the edge of paper 3 Set the paper inserting angle to within 65 4 Edges around the paper insertion area should be rounded at R2 mm or more 5 Set the paper feed load at the printer s paper inlet to 30 g or less 6 Take into account prevention of paper rewinding when designi...

Page 34: ...mple unit mm Roll Diameter Paper Tube Inner Diameter Paper Entrance Paper Entrance Paper Entrance Mechanism Attachment Position 4 Places Paper Exit Sectional View of Paper Holder AA Frame Screw 3 0 Vibration Isolation Rubber SP2 Chassis ...

Page 35: ...tion example unit mm Roll Diameter Paper Entrance Paper Entrance Paper Entrance Mechanism Attachment Position 4 Places Paper Exit Sectional View of Paper Holder Frame Screw 3 0 Vibration Isolation Rubber SP2 Chassis Roll Diameter ...

Page 36: ...he roll paper without using the roller Roll Diameter Paper Entrance Paper Entrance Paper Entrance Mechanism Attachment Position 4 Places Paper Exit Sectional View of Paper Holder Frame Screw 3 0 Vibration Isolation Rubber SP2 Chassis Rib Height ...

Page 37: ... 34 Fig 7 6 Printer installation Be careful of the soldered side of the PCB MP111MP MP115MP ...

Page 38: ...ints 8 1 1 Power supply ON OFF timing rule Supply 24 V line after the 5 V line has fully risen Similarly cut off the 5 V line after the 24 V line has fully fallen Fig 8 1 Power supply ON OFF timing rule 8 1 2 Method of controlling the drive circuit Fig 8 2 Drive circuit controlling method If the power supply ON OFF timing rule cannot be followed reset the print solenoid or motor drive circuit with...

Page 39: ...ide print interval 257 ms or more 8 3 Other Notes 1 Do not attempt to print when the paper or ribbon cartridge are not loaded in the printer mechanism as this could damage the print head 2 Do not store or use the printer mechanism at places of substantial dust iron content etc or in oily atmosphere 3 Wipe off dust dirt etc from the printer mechanism using a soft brush Or wipe with a piece of cloth...

Page 40: ...power transistor for driving print solenoid Power supply voltage 23V 1V 24V 10 Similarly arrange for 2 0 A or larger power supply capacity and connect an electrolytic condenser of 4700 µF to 6800 µF 35 V to the power source 9 2 5 V Line Arrange for 5 V power supply for the detector photo interruptor Voltage 5 V 5 Current consumption Approx 60 mA ...

Page 41: ...er Guide B Spread the boss unit on both sides of the paper guide B and remove the the boss from the paper guide A side Rotate the paper guide B and remove it 2 Setting the Paper Guide C When you remove the paper guide B you can see the groove at the right side of the paper guide A Insert the paper guide C into that groove Fig 10 1 Paper Guide Option ...

Page 42: ...tar micronics co jp service sp_sup_e htm for the lastest revision of the manual OVERSEAS SUBSIDIARY COMPANIES STAR MICRONICS AMERICA INC 70 D Ethel Road West Piscataway NJ 08854 U S A Tel 732 572 9512 Fax 732 572 5095 STAR MICRONICS U K LTD Star House Peregrine Business Park GommRoad HighWycombe Bucks HP13 7DL U K Tel 01494 471111 Fax 01494 473333 Distributed by Printed in Japan 80874315 ...

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