Star Micronics MP111MP-24G-A Operation Manual
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Star Micronics MP111MP-24G-A Operation Manual

Star Micronics MP111MP-24G-A Operation Manual

Dot matrix printer mechanism
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DOT MATRIX PRINTER MECHANISM
MP111MP-24G-A
MP115MP-24G-A
SPECIFICATION
AND
OPERATION MANUAL

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Summary of Contents for Star Micronics MP111MP-24G-A

  • Page 1 DOT MATRIX PRINTER MECHANISM MP111MP-24G-A MP115MP-24G-A SPECIFICATION OPERATION MANUAL...
  • Page 2 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: Table Of Contents

    1. GENERAL DESCRIPTION ... 1 2. CONSTRUCTION ... 2 Configuration ... 2 Principle of Operation ... 2 3. GENERAL SPECIFICATIONS ... 5 Printing Specifications ... 5 Paper Specifications ... 6 Ink Ribbon Specifications ... 7 Connector Specifications ... 9 Print Timing ... 11 Timing Chart ...

  • Page 4: General Description

    1. GENERAL DESCRIPTION MP111MP-24G-A and MP115MP-24G-A are serial impact dot matrix printer mechanisms used to record data and as electrical equipment such as for ECR. Model Name Notation G - A G: FG compatible Voltage 24 : 24 VDC Paper-out detector...

  • Page 5: Construction

    2. CONSTRUCTION 2.1 Configuration This printer mechanism is composed of the following components. Printer mechanism Other You can also use 1.75 inch (45 mm) width roll paper by removing the paper guide B and attaching the optional guide. 2.2 Principle of Operation 2.2.1 Drive This printer mechanism moves the print head, feeds paper and feed ribbon with the motor.
  • Page 6 Fig. 2-1 MP111MP External view – 3 –...
  • Page 7 Fig. 2-2 MP115MP External view – 4 –...

  • Page 8: General Specifications

    3. GENERAL SPECIFICATIONS 3.1 Printing Specifications Item Printing method Printing configuration Printing direction Printing speed Printing lines Character dimension Dot spacing Printing area Paper feed speed Wire diameter Line space Note 1: When performing bidirectional printing, horizontal drift is likely to occur in unidirectional printing. Details of Character Dimentions 1 Paper width 2 Fonts configuration (H x V)

  • Page 9: Paper Specifications

    3.2 Paper Specifications Item Paper type Ordinary roll paper (1P) and carbonless roll paper (2P or 3P) Paper width 57.5 0.5 mm (2.25 inch). With options, 44.5 0.5 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 Core diameter 12 1 mm...

  • Page 10: Ink Ribbon Specifications

    3.3 Ink Ribbon Specifications 1) MP111 Item Type Dedicated cartridge Color Purple (standard) Ribbon material Nylon 66 Ribbon size Width: 13 mm Model name Purple (standard): Ribbon cassette RC100 P Black (optional): Ribbon cassette RC100 B Ribbon life Purple: Black: Note: There is the possibility of damaging the printer by using ribbon cassettes that have not been speci- fied.
  • Page 11 2) MP115 Item Type Dedicated cartridge Color Black and red Ribbon material Nylon 66, (#40 denier) Ribbon size Width: 13 mm Model No. Black and red: Ribbon life Black: Red: Note: There is the possibility of damaging the printer by using ribbon cassettes that have not been speci- fied.

  • Page 12: Connector Specifications

    3.4 Connector Specifications Connector Type NIPPON HLEM28R-1 Connection Drawing See next page HD #6 HD CMN HD #4 HD #5 HD #1 HD CMN HD #2 HD #3 HD CMN HD #7 HD #8 HD #9 LF-ø4 LF-CMN A, B LF-ø2 LF-ø1 LF-ø3...
  • Page 13 LF-ø1 LF-CMN A,B LF-ø3 LF-ø2 LF-ø4 T1-sig T2-sig HP-sig PE-sig (RS-sig) *1 S-GND ( RS-SOL ) *1 CR MOTOR ( + ) ( CMN ( VH )) CR MOTOR ( - ) Fig. 3-5 Connector connections *1 MP115MP only – 10 –...

  • Page 14: Print Timing

    3.5 Print Timing This printer uses a timing signal of 1 as the total number of pulses to control the solenoid and motor. The numbering of Tn of the timing signal 1 is found as shown below. The first timing signal 2 after the rise of the home position signal is detected and the fall of the first timing signal 1 after the rise of timing signal 2 is set as T-1.

  • Page 15: Timing Chart

    MOTOR HIGH HP-sig HIGH T2-sig HIGH T1-sig PRINT PF MOTOR T1-sig: Type 1660 Hz, Max. 1710 Hz (Software and CPU should be designed at Max. 2000 Hz.) Printing speed: T1-sig 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.
  • Page 16 (2) Ribbon Shift Operation (Only with 2 color printing on the MP115) Release Action MOTOR HIGH TIMING SIG-1 RIBBON SHIFT ROTATE RIBBON SHIFT GEAR STOP T1 T2T3 18 Pulses 288 Pulses Ribbon shift gear rotation: 18 x 6 x 32/12 = 288 pulses Fig.

  • Page 17: Print Head Specifications

    3.7 Print Head Specifications (1) Basic Specifications Item Supply voltage 24 VDC 2.4 V Response frequency Max. 900 Hz Energized time See below Coil resistance 14.7 0.4 Peak current 1.0 A/solenoid (for 24 VDC, 375 s) 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.
  • Page 18 We employ a zener diode to control spike voltages that occur when the transistor is turned OFF. 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.
  • Page 19 (2) Pre-fire This operation applies minute vibrations to the needle wire to allow for its smooth movement as printer warmup. Pre-fire is performed under the following conditions. The energizing time is too short to allow for the printing action to occur. Operating time When power is turned ON.
  • Page 20 When you use the specific wires many times, make sure the maximum print ratio is not over the print duty shown in Fig. 3-13. Fig. 3-13 shows operation at 24.0V. 1200 Temperature 25 C 1100 1000 Ambient (1155) 1100 (1030) (850) (785) (730)

  • Page 21: Cr Motor Specifications

    3.8 CR Motor Specifications Item Type DC motor Supply voltage 24 VDC + 1.2 V Start current Max. 1.6 A Average current Approx. 0.15 A Specifications Fig. 3-14 Current waveform of the motor – 18 –...
  • Page 22 Fig. 3-15 Motor drive circuit (example) 10 K 3.3 K 6.8 K 1/6 W 2.2 K 1.2 K 10 K 20 K 0.47 F (Film) 0.033 F (Film) 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.

  • Page 23: Paper Feed Motor Specifications

    3.9 Paper Feed Motor Specifications Item Type PM type stepping motor Drive method 2-Phase excitation unipolar method Terminal voltage 24 VDC 1.2 V (for drive), 4.2 VDC (when holding) Peak current Max. 0.7 A Average current About 0.28 A Holding current About 0.08 A Amount of paper feed 1/144 inch per 1 step...

  • Page 24: Ribbon Shift Solenoid (Rs-Sol) Specifications

    3.10 Ribbon Shift Solenoid (RS-SOL) Specifications MP115MP only Item Supply voltage 24 VDC 1.2 V Pulse width T1-sig 18 pulses (Approx. 12 ms) Coil resistance Approx. 57.0 Average current Approx. 400 mA Fig. 3-17 Current waveform of RS-SOL Fig. 3-18 RS-SOL drive circuit (example) 2SD2010 (ROHM) DSM1D1 23 V + TR1 V...

  • Page 25: Timing Signal Detector Specifications

    3.11 Timing Signal Detector Specifications The timing signal detector is composed of a detection slit mounted on the motor shaft, a photo interruptor, and waveform shaping circuit. Timing signal 1 is generated 18 pulses and timing signal 2 is generated 1 pulse every time the motor rotates by 1 turn.

  • Page 26: Home Position Detector (Hp-Sig) Specifications

    3.12 Home Position Detector (HP-sig) Specifications The home position detector is composed of the mechanical switch. While the carriage is located at the left end, the switch remains ON. 10 k 15 k 0.022 F Fig. 3-21 Home position detector circuit (example) In order to improve reliability, we recommend that the HP-sig is detected as described below.

  • Page 27: Ribbon Position Detector (Rs-Sig) Specifications (Mp115Mp Only)

    3.14 Ribbon Position Detector (RS-sig) Specifications (MP115MP only) The ribbon position is made up by a mechanical switch. When the ribbon is at the position for printing of black characters, the switch is ON. 10 k 15 k 0.022 F Fig.
  • Page 28 Paper Entrance Paper Entrance Paper Entrance Paper Entrance Figure 3-24 MP111MP External dimension (unit: mm) – 25 –...
  • Page 29 Paper Entrance Paper Entrance Paper Entrance Paper Entrance Figure 3-25 MP115MP External dimension (unit: mm) – 26 –...

  • Page 30: Reliability Specifications

    4. RELIABILITY SPECIFICATIONS Item Printer reliability Life Print head life T e m p e r a t u r e O p e r a t i n g R e l a t i v e environment humidity T e m p e r a t u r e S t o r a g e R e l a t i v e...

  • Page 31: Setting The Ribbon Cartridge

    5. SETTING THE RIBBON CARTRIDGE 1. Turn the ribbon feed knob of ribbon cartridge in the direction of the arrow to remove slack in the ribbon. 2. 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.

  • Page 32: Setting The Paper

    6. SETTING THE PAPER 6.1 Setting the Paper 1. Cut straight the leading edge of the paper. 2. Insert 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.

  • Page 33: Installation

    7. INSTALLATION 1. At the time of mounting the printer mechanism into its housing cabinet, put cushion material, such as, rubber foot, on the printer mechanism legs. If installed directly, reverberations occur producing noise. We recommend that you use the following rubber foot. Fig.
  • Page 34 Mechanism Attachment Position (4 Places) Paper Entrance Paper Entrance (Paper Tube Inner Diameter Roll Diameter Sectional View of Paper Holder AA Fig. 7-3 Installation space (example) (unit: mm) Paper Exit Frame – 31 – Screw 3.0 Vibration Isolation Rubber SP2 Chassis...
  • Page 35 Mechanism Attachment Position (4 Places) Paper Entrance Roll Diameter Paper Entrance Sectional View of Paper Holder Fig. 7-4 Printer installation (example) (unit: mm) Paper Exit Frame Roll Diameter – 32 – Screw 3.0 Vibration Isolation Rubber SP2 Chassis...
  • Page 36 Mechanism Attachment Position (4 Places) Paper Entrance Paper Entrance Roll Diameter Sectional View of Paper Holder Fig. 7-5 Printer installation (Placing the roll paper without using the roller.) Paper Exit Screw 3.0 Vibration Isolation Frame Rubber SP2 Chassis – 33 –...
  • Page 37 Fig. 7-6 Printer installation – 34 –...

  • Page 38: Operational Notes

    8. OPERATIONAL NOTES 8.1 Power ON/OFF Note If the 5 V power supply line for logic has not fully risen or fallen immediately after the power supply is turned ON or OFF, the CPU or TTL in the logic circuit may misoperate. At such times, power is supplied to the motor or solenoid, causing, in the worst case, burnt out solenoid or running of motor (misoperation), unless the 24 V power supply line for motor drive is completely OFF.

  • Page 39: Carriage Motor Protection Method (Against Mechanical Errors)

    Fig. 8-3 Circuit to control drive circuit (example) 8.2 Carriage Motor Protection Method (Against Mechanical Errors) If the carriage motor gets locked as a result of trapping foreign matter, etc. in the printer mechanism, a risk of damaging the motor due to flow of excess current to it is generated. Therefore, it becomes necessary to monitor the excess load status of printer mechanism, by detecting the cycle of timing signal 1 with timer, etc.

  • Page 40: Power Supply Capacity

    9. POWER SUPPLY CAPACITY 9.1 24 V Line Arrange for the following power supply, taking into account the voltage drop (about 1 V) of V (sat) of the power transistor for driving print solenoid. Power supply voltage 23V+1V = 24V 10 % Similarly, arrange for 2.0 A or larger power supply capacity;...

  • Page 41: Options

    OPTIONS You can also use 1.75 inch (44.5 mm) width roll paper by removing the paper guide B and attaching the optional guide C. (1) Removing the Paper 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.
  • Page 42 HEAD OFFICE ELECTRONIC PRODUCTS DIVISION STAR MICRONICS CO., LTD. 536 Nanatsushinya, Shimizu, Shizuoka, 424-0066 JAPAN Tel : 0543-47-0112 Fax: 0543-48-5271 Please access the following URL http://www.star-micronics.co.jp/service/sp_sup_e.htm for the lastest revision of the manual. Distributed by OVERSEAS SUBSIDIARY COMPANIES STAR MICRONICS AMERICA, INC.

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