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6-1

CHAPTER 6

OUTER CASE DESIGN GUIDE

6.1 SECURING THE PRINTER MAIN BODY

6.1.1 How to Mount the Printer Main Body

Figure 6-1and Figure 6-2 show dimensions for positioning and securing the printer main body.

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Holes #1 and #2 must be used for positioning the printer main body. Design bosses on the outer

case to position the printer main body for the positioning holes #1 and #2. The height of the bosses
on the outer case must be 1.5mm (Max.)

•

Secure by screw at the U shaped screwing position C.

•

Design the fixing hook to the part of a and b.

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Содержание LTPD245D

Страница 1: ...LTPD245D LTPD345D THERMAL PRINTER MECHANISM TECHNICAL REFERENCE U00111983500 ...

Страница 2: ...nsees and customers The information contained herein is the property of SII and shall not be reproduced in whole or in part without the prior written approval of SII SII reserves the right to make changes without notice to the specifications and materials contained herein and shall not be responsible for any damages including consequential caused by reliance on the materials presented including bu...

Страница 3: ...y before designing so that you are able to use the product properly SII has not investigated the intellectual property rights of the sample circuits included in this technical reference Fully investigate the intellectual property rights of these circuits before using In particular SII reserves the industrial property rights for the heat storage simulation described in Chapter 3 Using it for the ot...

Страница 4: ... DIMENSIONS 3 3 3 3 STEP MOTOR 3 7 3 3 1 General Specifications 3 7 3 3 2 Sample Drive Circuit 3 8 3 3 3 Excitation Sequence 3 9 3 3 4 Motor Start Stop Method 3 10 3 3 5 Motor Drive Method 3 11 3 3 6 Motor Drive Precautions 3 16 3 4 THERMAL HEAD 3 17 3 4 1 Structure of the the Thermal Head 3 17 3 4 2 Print Position of the Data 3 18 3 4 3 Electrical Characteristics of Thermal Head 3 19 3 4 4 Timing...

Страница 5: ... PAPER SENSOR 3 29 3 7 PLATEN POSITION SENSOR 3 30 3 7 1 General Specifications 3 30 3 7 2 Platen Position Sensor Precautions 3 30 CHAPTER 4 CONNECTING TERMINALS 4 1 RECOMMENDED CONNECTOR FOR EXTERNAL CIRCUITS 4 1 4 2 CONNECTING TERMINALS 4 1 CHAPTER 5 PRINT DRIVE METHOD 5 1 MOTOR AND THERMAL HEAD DRIVE METHOD 5 1 5 2 THERMAL HEAD DIVISION DRIVE METHOD 5 4 5 3 PRECAUTIONS FOR PRINT DRIVE 5 5 CHAPT...

Страница 6: ...aper Exit 6 11 6 7 2 Design the Paper Cutter 6 12 6 8 PRECAUTIONS FOR DESIGNING THE OUTER CASE 6 13 CHAPTER 7 EXTERNAL DIMENSIONS CHAPTER 8 HANDLING METHOD 8 1 PROCEDURES FOR INSTALLING UNINSTALLING THERMAL PAPER 8 1 8 1 1 Procedures for Installing Uninstalling the Thermal paper 8 1 8 1 2 Precautions for Installing the Thermal paper 8 2 8 2 PROCUDURES FOR CLEANING THE THERMAL HEAD 8 3 8 2 1 Proced...

Страница 7: ...iving Using Six Divisions LTPD245D 5 2 5 2 Timing Chart for Driving Using One Division LTPD245D 5 2 6 1 Dimensions for Positioning and Securing the Printer Main Body LTPD245D 6 2 6 2 Dimensions for Positioning and Securing the Printer Main Body LTPD345D 6 2 6 3 Dimensions for Positioning and Securing the Platen Block 6 4 6 4 External Dimensions and Motion of Platen Release Lever 6 7 6 5 Recommende...

Страница 8: ...D 3 18 3 9 DST Blocks and Activated Heat Elements LTPD345D 3 18 3 10 Electrical Characteristics of Thermal Head LTPD245D 3 19 3 11 Electrical Characteristics of Thermal Head LTPD345D 3 20 3 12 Thermal Head Heat Element Resistance 3 21 3 13 Standard Printing Energy and Temperature Coefficient 3 22 3 14 Activation Pulse Width 3 24 3 15 Temperature Characteristics 3 27 3 16 Out of paper Sensor 3 29 3...

Страница 9: ...such damages and or loss originate from the printer itself SII has not investigated the intellectual property rights of the sample circuits included in this technical reference Fully investigate the intellectual property rights of these circuits before using The printer is designed and manufactured to be mounted onto general electronic equipment If high reliability is required of the printer in re...

Страница 10: ...rmal head to cool before cleaning In order to allow cooling secure clearance between the thermal head and the outer case when designing the outer case Precautions for rising temperatures of the motor Temperature of the motor and its peripherals rises very high during and immediately after printing Be sure to design the outer case to prevent users from burn injuries by touching them Place warning l...

Страница 11: ...mall as possible below 50mΩ Keep distance from signal lines to reduce electrical interference A surge voltage between VP and GND should not exceed 10V For noise countermeasure connect a 0 1μF capacitor between Vdd and GND pins near the connector Always detect the outputs of the platen position sensor and out of paper sensor Never activate the thermal head when the platen block is in open state and...

Страница 12: ... area may be colored due to an accumulation of heat Verify the performance with your actual device Design the outer case to ensure enough space to allow the users to handle the platen release lever easily with fingers A door on the outer case that holds the platen block must be set by pushing the center of the platen block If only one end of the platen block is set a print defect and or a paper ja...

Страница 13: ... and the thermal head may be stuck together and cause paper feed difficulty If facing this problem release the platen block and set it back again before starting printing Do not release the platen block during printing otherwise this may reduce the efficiency of the printer When printing at a high print ratio in a low temperature or high humidity environment the vapor from the thermal paper during...

Страница 14: ...1 6 1 2 3 Precautions on Discarding When discarding used printers discard them according to the disposal regulations and rules of each respective district ...

Страница 15: ...g A high density print head of 8 dots mm produces clear and precise printing Compact LTPD245D Dimensions W69 0mm x D30 0mm x H15 0mm Mass approx 40g LTPD345D Dimensions W91 0mm x D30 0mm x H15 0mm Mass approx 58g High print speed 1 LTPD245D Maximum 100mm s print is available LTPD345D Maximum 80mm s print is available Easy operation Platen block open mechanism provides easy paper installation Maint...

Страница 16: ...per feed pitch 0 03125mm Maximum print speedNOTE 2 100mm sNOTE 2 80mm sNOTE 2 Print width 48mm 72mm Paper width 0 1 28 mm 0 1 28 mm 0 1 18 mm 0 1 38 mm 0 1 38 mm 0 1 18 mm 0 1 38 mm 0 1 38 mm 0 1 28 mm 0 1 48 mm 0 1 48 mm 0 1 28 mm Thermal head temperature detection Thermistor Platen position detection Mechanical switch Out of paper detection Reflection type photo interrupter Operating voltage ran...

Страница 17: ...ust and foreign materials Paper feed force 0 49N 50gf or more Paper hold force 0 78N 80gf or more Dimensions excluding convex part W69 0mm D30 0mm H15 0mm W91 0mm D30 0mm H15 0mm Mass approx 40g approx 58g Specified thermal paper Papierfabrik August Koehler AG Mitsubishi Hi Tech Paper Jujo Thermal KANZAN KT55F20 F5041 AP50KS D KF50 NOTE 1 Up to 128 dots are available If the VP is 7 9 or lower NOTE...

Страница 18: ...eat Element Dimensions LTPD245D Paper width In case of 28 28mm 21mm 168dots 6mm 48dots 11mm 88dots 6mm 48dots 31mm 248dots 6mm 48dots 48mm 384dots 21mm 168dots 48mm 384dots 31mm 248dots 48mm 384dots 11mm 88dots 48mm 384dots 0 125mm 0 125mm Base Paper width In case of 18 38mm Paper width In case of 38 18mm 0 0625mm ...

Страница 19: ...Paper width 5 mm 11 mm Printing width 2 mm 2 mm 5 mm 31 mm Printing width 38 0 1 mm Paper width 18 0 1 mm Paper width 5 mm 31 mm Printing width 5 mm 11 mm Printing width 2 mm 2 mm 58 0 1 mm Paper width 5 mm 48 mm Printing width 5 mm Print area Base Print area Paper width In case of 28 28mm Print area Paper width In case of 18 38mm Print area Paper width In case of 38 18mm ...

Страница 20: ...ensions LTPD345D Paper width In case of 38 38mm 32mm 256dots 8mm 64dots 22mm 176dots 8mm 64dots 42mm 336dots 8mm 64dots 72mm 576dots 32mm 256dots 72mm 576dots 42mm 336dots 72mm 576dots 22mm 176dots 72mm 576dots 0 125mm 0 125mm Base Paper width In case of 28 48mm Paper width In case of 48 28mm 0 0625mm ...

Страница 21: ...Paper width 4 mm 22 mm Printing width 2 mm 2 mm 4 mm 42 mm Printing width 48 0 1 mm Paper width 28 0 1 mm Paper width 4 mm 42 mm Printing width 4 mm 22 mm Printing width 2 mm 2 mm 80 0 1 mm Paper width 4 mm 72 mm Printing width 4 mm Print area Base Print area Paper width In case of 38 38mm Print area Paper width In case of 28 48mm Print area Paper width In case of 48 28mm ...

Страница 22: ... 2 General Specifications of the Step Motor Specifications Item LTPD245D LTPD345D Type PM type step motor Drive method Bi polar chopper Excitation 1 2 phase Winding resistance per phase 12Ω phase 10 Motor drive voltage VP 4 75 to 9 5V Motor controlled current 300 mA phase Drive pulse rate 3200pps max 2560pps max ...

Страница 23: ...1B OUT1B IN2B OUT2B PS VREF RNF1 SENSE1 VLIM1 VLIM2 RNF2 SENSE2 CR1 CR2 NC NC 14 10 47μF 25V Vp 4 18 2 47kΩ FUSE 1A 15 11 19 7 6 24 1 Vdd 16 9 23 3 5 20 12 0 5Ω 1 0 125W 21 13 0 5Ω 1 0 125W 18kΩ 18kΩ 680pF 680pF 22 49 48 47 50 A B A B 0 1μF 8 17 9 1kΩ 1 1 6kΩ 1 0 1μF Vdd GND VM1 VM2 Recommended motor driver BD6380EFV Rohm Figure 3 5 Sample Drive Circuit ...

Страница 24: ...tep 1 step 2 step 3 step 4 step 5 step 6 step7 step 8 step 1 step 2 as shown in Table 3 3 PH3 PH4 H L H L START STEP STEP1 STEP2 STEP3 PH1 PH2 H L H L H L MCL1 STEP4 1 dot line Set MCL1 to High while the motor is driven Figure 3 6 Input Voltage Waveforms for the Sample Drive Circuit Table 3 3 Excitation Sequence Input signal Output signal PH1 PH2 PH3 PH4 A B A B Step1 H L L L H OPEN L OPEN Step2 H...

Страница 25: ... acceleration step To restart the motor from the stop step immediately shift the motor to the sequence of print step 2 Stop step To stop the motor excite the same phase as the last one in the printing step for 65ms 3 Pause state In the pause state do not excite the motor to prevent to the motor from overheating Even when the motor is not excited holding torque of the motor prevents the paper from ...

Страница 26: ...ad Accelerate the speed sequentially up to the maximum motor drive pulse rate PM according to the Table 3 5 and Table 3 6 The method for accelerating the motor is as follows 1 The start step is 5000μs 2 The first step is the first acceleration step time 3 The second step is the second acceleration step time 4 Hereinafter the n th step is the n acceleration step time 5 After accelerating up to the ...

Страница 27: ...shorter than the previous step time and should be the biggest ex In the case of Figure 3 5 if the previous step time is 900µs the next step should be the 10th acceleration step 880µs Hereinafter accelerate the speed sequentially up to the maximum motor drive pulse rate PM according to Table 3 5 and Table 3 6 ...

Страница 28: ...00 385 12 1255 797 49 2628 381 13 1310 763 50 2655 377 14 1364 733 51 2683 373 15 1415 707 52 2709 369 16 1465 683 53 2736 365 17 1513 661 54 2762 362 18 1560 641 55 2788 359 19 1605 623 56 2814 355 20 1649 606 57 2840 352 21 1692 591 58 2865 349 22 1734 577 59 2891 346 23 1775 563 60 2916 343 24 1815 551 61 2940 340 25 1854 539 62 2965 337 26 1893 528 63 2989 335 27 1930 518 64 3013 332 28 1967 5...

Страница 29: ...80 481 12 1004 996 49 2102 476 13 1048 954 50 2124 471 14 1091 917 51 2146 466 15 1132 883 52 2168 461 16 1172 853 53 2189 457 17 1210 826 54 2210 453 18 1248 802 55 2231 448 19 1284 779 56 2251 444 20 1319 758 57 2272 440 21 1354 739 58 2292 436 22 1387 721 59 2312 432 23 1420 704 60 2332 429 24 1452 689 61 2352 425 25 1483 674 62 2372 422 26 1514 660 63 2391 418 27 1544 648 64 2411 415 28 1574 6...

Страница 30: ... rate pps Maximum continuous drive time s Drive ratio Drive ratio Drive ratio Drive ratio Drive ratio 320 to 560 450 85 85 85 85 90 560 to 800 450 85 85 85 90 90 800 to 1040 450 85 85 85 90 95 1040 to 1280 450 85 85 90 95 100 1280 to 1520 450 85 90 90 100 100 1520 to 1760 450 85 90 95 100 100 1760 to 2000 455 85 90 100 100 2000 to 2240 465 85 95 100 100 2240 to 2480 485 90 100 100 2480 to 2720 515...

Страница 31: ...imes of the motor See Chapter 5 PRINT DRIVE METHOD for details Do not feed the thermal paper backwards no more than 9mm Surface of thermal paper may get scratched by backward feed The backward feed may cause paper skew and jams depending on paper roll layout and designing of paper holder Be sure to confirm performance with your product before using the backward feed Do not print intermittently Do ...

Страница 32: ...n 1 block and 128 dots in 4 blocks each are available The divided printing is effective for a high print ratio printing because the peak current can be cut down with the reduction of the average print speed 3 4 1 Structure of the Thermal Head The following describes the thermal head block diagram as an example of the LTPD245D Figure 3 8 shows the thermal head block diagram when driving the LTPD245...

Страница 33: ...r Dots DST 1 DST 1 1 to 128 128 2 DST 2 129 to 256 128 3 DST 3 257 to 320 64 4 DST 4 321 to 448 128 5 DST 5 449 to 576 128 3 4 2 Print Position of the Data The following describes the print position of the data as an example of the LTPD245D 384 bit data 1 to 384 transferred through DI terminals are printed when driving the LTPD245D as shown in Figure 3 9 Data in Paper feed direction Paper Print su...

Страница 34: ...High IIH DST Vdd 55 μA DST input current Low IIL DST VIL 0V 0 5 μA High IIH CLK VIH Vdd 1 0 μA CLK input current Low IIL CLK VIL 0V 1 0 μA High IIH LAT VIH Vdd 1 0 μA LAT input current Low IIL LAT VIL 0V 1 0 μA 2 7V Vdd 3 0 V 5 MHz CLK frequency f CLK 3 0 Vdd 5 25V 8 MHz 2 7V Vdd 3 0 V 50 ns CLK pulse width t1 See the Timing Chart 3 0 Vdd 5 25V 30 ns 2 7V Vdd 3 0 V 70 ns DI setup time t2 See the T...

Страница 35: ...0 μA High IIH CLK VIH Vdd 1 5 μA CLK input current Low IIL CLK VIL 0V 1 5 μA High IIH LAT VIH Vdd 1 5 μA LAT input current Low IIL LAT VIL 0V 1 5 μA 2 7V Vdd 3 0 V 5 MHz CLK frequency f CLK 3 0 Vdd 5 25V 8 MHz 2 7V Vdd 3 0 V 50 ns CLK pulse width t1 See the Timing Chart 3 0 Vdd 5 25V 30 ns 2 7V Vdd 3 0 V 70 ns DI setup time t2 See the Timing Chart 3 0 Vdd 5 25V 30 ns 2 7V Vdd 3 0 V 40 ns DI hold t...

Страница 36: ... 9 to 183 1Ω 3 4 6 Maximum Current Consumption Since the maximum current consumption may reach the values calculated using equation 2 when the thermal head is driven the number of simultaneously activated dots should be determined not to exceed power supply capacity Also allowable current for the cable material and the voltage drop on the cable should be cared well Equation 2 min H P SA P R V N I ...

Страница 37: ...ction 3 5 4 C Thermal head activation pulse period coefficient See section 3 5 6 3 5 2 Calculation of Printing Energy The printing energy E can be calculated using equation 4 as the appropriate printing energy is different depending on each specified thermal paper and the temperature of the thermal head Equation 4 25 T T E E X C 25 E25 Standard printing energy mJ See Table 3 13 TC Temperature coef...

Страница 38: ...djusted voltage V can be calculated using equation 6 as the printing density changes by the difference of the thermal head drive voltage Equation 6 8 2 V 1 368421 V P 3 5 5 Setting of Activation Pause Time In order to protect the thermal head heat elements when the same heat element dots are activated continuously on the successive dot line determine the activation pulse period the time from the s...

Страница 39: ... 0 894 0 839 0 792 0 753 60 1 061 0 950 0 865 0 797 0 741 0 696 0 657 0 624 70 0 843 0 755 0 687 0 633 0 589 0 553 0 522 0 496 6 0 80 0 625 0 560 0 509 0 469 0 437 0 410 0 387 0 368 10 1 583 1 434 1 317 1 223 1 146 1 081 1 026 0 978 0 937 0 901 0 868 0 1 449 1 313 1 206 1 120 1 049 0 990 0 939 0 896 0 858 0 825 0 795 10 1 316 1 192 1 095 1 017 0 953 0 899 0 853 0 813 0 779 0 749 0 722 20 1 183 1 0...

Страница 40: ...184 0 174 0 166 0 158 0 152 0 146 0 141 0 137 0 133 0 129 0 126 10 0 781 0 715 0 662 0 619 0 583 0 552 0 526 0 504 0 484 0 466 0 451 0 437 0 425 0 413 0 403 0 0 715 0 654 0 606 0 567 0 534 0 506 0 482 0 461 0 443 0 427 0 413 0 400 0 389 0 379 0 369 10 0 649 0 594 0 550 0 514 0 484 0 459 0 438 0 419 0 402 0 388 0 375 0 363 0 353 0 344 0 335 20 0 583 0 534 0 494 0 462 0 435 0 413 0 393 0 376 0 362 0...

Страница 41: ...emperature is shown in Figure 3 11 and Table 3 15 Equation 9 298 1 T 273 1 B EXP R R X X 25 RX Resistance at TX C Ω R25 Resistance at 25 C 30 5 kΩ B B value 3950 2 K EXP A The A th power of natural logarithm e 2 71828 1 10 100 1000 20 15 10 5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 温度サーミスタ抵抗値 kΩ Figure 3 11 Thermistor Resistance vs Temperature Temperature Resistance kΩ ...

Страница 42: ...rature C Thermistor Resistance kΩ 20 316 97 15 234 22 10 175 07 5 132 29 0 100 99 5 77 85 10 60 57 15 47 53 20 37 61 25 30 00 30 24 11 35 19 51 40 15 89 45 13 03 50 10 75 55 8 92 60 7 45 65 6 25 70 5 27 75 4 47 80 3 80 85 3 25 90 2 79 95 2 41 100 2 09 ...

Страница 43: ...to be activated by malfunction of the control unit CPU the software for detecting abnormal temperatures may not function properly resulting in overheating of the thermal head Overheating of the thermal head not only may damage the thermal head but also may cause smoke fire and burn injuries Always use hardware together with software for detecting abnormal temperatures to ensure personal safety If ...

Страница 44: ...there is no paper a load is put on the paper drive system and the life of the printer may be shortened significantly Table 3 16 shows about the out of paper sensor used for this printer Table 3 16 Out of paper Sensor Item Specification Type NJL5902R Rank B Manufacturer New Japan Radio Co Ltd Figure 3 12 shows sample external circuit of the out of paper sensor The PS signal is High when there is no...

Страница 45: ...ut from the platen position detection and in the paper presence state by detecting the output from the paper sensor 3 7 1 General Specifications Table 3 17 shows about the general specification Table 3 17 General Specifications of Platen Position Sensor Item Specification Rated voltage DC5 0V Rated current 1mA Contact resistance 3Ω max Figure 3 13 shows sample external circuit of the platen positi...

Страница 46: ...rmly to the external circuits Table 4 1 Recommended Connectors Number of Terminals Recommended Connectors 50 MOLEX INC 54104 5031 right angle top contact gold plated 4 2 CONNECTING TERMINALS Figure 4 1 shows the terminal configuration of the connecting terminals and Table 4 2 and Table 4 3 show terminal assignments of the connecting terminals 1 50 Figure 4 1 Connecting Terminals ...

Страница 47: ...ND 12 GND GND 13 GND GND 14 GND GND 15 DST6 Thermal head print activation instruction signal 6 block 16 DST5 Thermal head print activation instruction signal 5 block 17 DST4 Thermal head print activation instruction signal 4 block 18 Vdd Logic power supply 19 TH2 Thermistor the one is used for GND 20 TH1 Thermistor same as pin 21 21 TH1 Thermistor same as pin 20 22 DST3 Thermal head print activati...

Страница 48: ...e power 38 VPS2 Power supply of the paper sensor 2 LED anode 39 PS Output signal of the paper sensor Photo transistor collector 40 VPS1 Power supply of the paper sensor 1 LED anode 41 GND GND of the paper sensor LED cathode photo transistor emitter Platen position sensor GND 42 HS Platen position sensor output 43 N C No connection 44 FG FG 45 FG FG 46 N C No connection 47 A Motor drive signal 48 B...

Страница 49: ...ND GND 11 GND GND 12 GND GND 13 GND GND 14 GND GND 15 N C No connection 16 DST5 Thermal head print activation instruction signal 5 block 17 DST4 Thermal head print activation instruction signal 4 block 18 Vdd Logic power supply 19 TH2 Thermistor the one is used for GND 20 TH1 Thermistor same as pin 21 21 TH1 Thermistor same as pin 20 22 DST3 Thermal head print activation instruction signal 3 block...

Страница 50: ...rive power 38 VPS2 Power supply of the paper sensor 2 LED anode 39 PS Output signal of the paper sensor Photo transistor collector 40 VPS1 Power supply of the paper sensor 1 LED anode 41 GND GND of the paper sensor LED cathode photo transistor emitter Platen position sensor GND 42 HS Platen position sensor output 43 N C No connection 44 FG FG 45 FG FG 46 N C No connection 47 A Motor drive signal 4...

Страница 51: ...n One dot is therefore composed of two of the half dots The motor feeds the thermal paper for one dot line with four steps In order to print one dot line feed the thermal paper for four steps and activate the thermal head in every two step The following describes the drive method as an example of the LTPD245D Figure 5 1 shows a timing chart for driving using six division printing Figure 5 2 shows ...

Страница 52: ...d dot line 1st step Pause Start 1st dot line 1st step 1st dot line 3rd step 1st dot line 2nd step 2nd dot line 2nd step 2nd dot line 3rd step PH1 PH2 PH3 PH4 CLK Dl LAT DST1 DST2 DST3 DST4 DST5 DST6 PH4 PH3 PH1 PH2 2nd dot line 2nd step 2nd dot line 3rd step 1st dot line 4th step 2nd dot line 1st step Pause Start 1st dot line 1st step 1st dot line 3rd step 1st dot line 2nd step 2nd dot line 4th st...

Страница 53: ...fter the 1st step time is past even printing of the 1st half dot line has not been completed yet without synchronizing to activation of the thermal head Drive the motor by one step The 2nd step ends after printing of the 1st half dot line is completed and the 2nd step time is past Drive the motor by one step Start activation of the thermal head through DST1 to 6 for printing the 2nd half dot line ...

Страница 54: ...ks to be driven at the same time are predetermined for the fixed division method In this method high quality printing is available because the physical blocks are always driven in the same order 2 Dynamic division method Logical blocks are predetermined so that number of dots of the physical block does not exceed the specified maximum number of the activating dots for every 1 dot line printing Log...

Страница 55: ...heat element shall be secured more than 0 5ms The number of the maximum thermal head division in a half dot line should be 6 or lower for LTPD245D and 9 or lower for LTPD345D to maintain print quality The number of the simultaneously activated dots should be 96 dots or less Up to 128 dots are available if the VP is 7 9 or lower ...

Страница 56: ...ioning and securing the printer main body Holes 1 and 2 must be used for positioning the printer main body Design bosses on the outer case to position the printer main body for the positioning holes 1 and 2 The height of the bosses on the outer case must be 1 5mm Max Secure by screw at the U shaped screwing position C Design the fixing hook to the part of a and b ...

Страница 57: ...General tolerance 0 1 Figure 6 1 Dimensions for Positioning and Securing the Printer Main Body LTPD245D 2 12 7 2 1 0 05 O 2 1 0 05 O 2 3 0 05 O 3 23 7 0 5 1 5 19 15 Paper center 6 29 75 0 5 48 c 1 2 b a Outer case for printer main body mouting 51 65 0 5 6 Unit mm General tolerance 0 1 Figure 6 2 Dimensions for Positioning and Securing the Printer Main Body LTPD345D ...

Страница 58: ...inter main body to be mounted on a flat surface and prevent from vibration To prevent the thermal head from being damaged by static electricity connect the FPC terminals 44 and 45 shown in Chapter 4 to the Frame Ground FG Connect the signal ground SG to the frame ground FG using a 1MΩ resistor so that the electric potential of the signal ground SG of the thermal head and that of the frame ground F...

Страница 59: ...or the positioning holes 3 and 4 The height of the bosses on the door must be 1 5mm Max Secure the platen block using the screw holes d and e 2 1 0 05 O 3 2 O 2 1 0 0 5 B 9 5 Y dimension The shaded area is the position of Platen Block rotation center 5 85 X dimension 200 MAX 35 MIN 0 35 10 7 3 3 4 3 6 a b c 1 2 e 4 3 d A Unit mm General tolerance 0 1 Figure 6 3 Dimensions for Positioning and Secur...

Страница 60: ...en block Design the door and the outer case strong enough to keep the allowable dimensions because stress is applied to them when setting and releasing the platen block The rotation center of the door should be designed to fit the rotational shaft into the shaft hole so that the platen block should be stable when it is in the close state If the printer main body and the platen block are not placed...

Страница 61: ...al head from being damaged by static electricity connect the FPC terminals 44 and 45 shown in Chapter 4 to the Frame Ground FG Connect the signal ground SG to the frame ground FG using a 1MΩ resistor so that the electric potential of the signal ground SG of the thermal head and that of the frame ground FG of the printer are equal If using a sheet metal material for the door the door should also be...

Страница 62: ...plied excessive force 29 4N 3kg Design the button or the lever and its motion so that the platen release lever is pushed to an angle of 9 degrees of the released position Design the button or the lever so that no load is constantly applied to it while the platen block is set 7 3 2 1 The pressure area of Platen release lever 22 8 Platen open state Platen set state 1 13 75 11 7 8 5 The center of Loc...

Страница 63: ...ading direction of the thermal paper Figure 6 5 Recommended Layout between the Printer and the Thermal Paper The paper feeding distance between the out of paper sensor and the heat element is approximately 8 3mm Platen Out of paper sensor Paper roll Thermal head Printer mechanism Printer mounting plate Thermal head heat elements ...

Страница 64: ...or less Be aware that the printing problem and paper feed problem may occur in the following case even if it is below 0 49N Design the paper holder so as not to make these conditions and verify the performance with your actual device ex In case that the paper roll wobbles in the paper holder In case that tension of the thermal paper between the paper roll and the printer changes rapidly In additio...

Страница 65: ...ion B Paper width In case of 28 48mm Parting section Parting position C Paper width In case of 48 28mm Parting section 81 0 2 0 29 0 1 0 49 0 1 0 3 81 0 2 0 49 0 1 0 29 0 1 0 3 4 4 4 29 0 1 0 29 0 1 0 59 0 2 0 1 Parting section Parting position A Paper width In case of 28 28mm Parting position B Paper width In case of 18 38mm Parting section Parting position C Paper width In case of 38 18mm Partin...

Страница 66: ...r exit of the outer case and the door so that the thermal paper coming out angle must be within of 50 to 85 as shown in Figure 6 9 The paper exit design should not interfere with the thermal paper coming out Design the paper exit not to change thermal paper coming out direction and not interfere with paper feeding 10 7 O 7 9 5 0 8 5 0 35 1 90 Paper insert angle 90 35 Paper coming out direction Uni...

Страница 67: ... than paper holding force Design the blade edge of the cutter as shown in the right figure of Figure 6 10 so that the blade edge can guide the thermal paper edge after cutting If designing the blade edge as shown in the left figure the paper edge may be caught by the blade edge and result in the thermal paper edge to be caught inside of the cutter Set the paper cutter to a position that allows to ...

Страница 68: ...nsure enough space to allow the users to handle the platen release lever easily with fingers See Chapter 8 PROCEDURES for INSTALLING UNINSTALLING THERMAL PAPER for specific procedures Also see 6 4 DESIGN THE PLATEN RELEASE LEVER for its motion Design the outer case so that it and parts for the outer case will not apply any load to the printer main body and the platen block The load may affect prin...

Страница 69: ...external dimensions of the platen block for LTPD245D and Figure 7 2 shows external dimensions of the printer LTPD245D Figure 7 3 shows external dimensions of the platen block for LTPD345D and Figure 7 4 shows external dimensions of the printer LTPD345D ...

Страница 70: ... 1 28 0 1 6 0 1 14 85 2 1 0 05 O 3 O 3 2 6 3 57 7 66 3 1 5 Range of platen motion 4 3 0 1 1 5 12 528 O 2 1 0 0 5 8 8 Unit mm General tolerance for dimensions 0 5 Figure 7 1 External Dimensions of the Platen Block LTPD245D ...

Страница 71: ...8 15 0 1 15 1 5 3 8 0 1 2 1 0 05 6 0 1 29 65 29 75 6 0 1 27 5 9 5 0 2 1 6 0 05 4 3 37 3 39 95 30 1 0 05 4 54 3 2 11 7 25 5 21 0 1 58 3 0 1 Paper Inlet Width 1 0 05 4 3 0 1 10 7 0 1 69 15 3 5 1 M2 burring 26 75 2 4 2 0 8 0 04 t O 7 9 3 8 Paper Inlet Position O 3 O 2 3 0 0 5 O 2 O 2 1 0 0 5 1 48 Paper Inlet position 5 1 2 65 Section A A 38 7 ...

Страница 72: ...ge of platen motion 8 8 4 3 0 1 1 5 12 528 6 3 79 7 88 3 O 2 1 0 05 82 1 16 05 56 0 1 50 0 1 6 0 1 14 85 2 1 0 05 O 3 O 3 2 Unit mm General tolerance 0 5 Figure 7 3 External Dimensions of the Platen Block LTPD345D ...

Страница 73: ...8 0 1 22 8 19 15 0 1 51 65 29 75 6 0 1 27 5 2 65 1 6 0 05 4 3 3 8 0 1 37 3 38 7 39 95 5 85 0 2 5 1 3 30 1 0 05 3 2 4 54 25 5 21 0 1 80 3 0 1 Paper Inlet Width 91 5 1 3 0 8 0 04 t 4 2 1 0 05 4 3 0 1 10 7 0 1 O 2 15 11 7 26 75 2 A A O 7 9 3 8 Paper Inlet Position 1 48 Paper Inlet Position 40 Paper Inlet Angle Section A A 9 5 0 2 O 2 1 0 0 5 ...

Страница 74: ...e platen release lever in the direction of the arrow in the Figure 8 1 Platen block Platen release lever Figure 8 1 Loading the Thermal Paper 1 Pull up the platen block after making sure that the platen block is released from the printer main body Open state Set the thermal paper straight to the printer and leave at least 5cm of the thermal paper come out from the printer in the Figure 8 2 ...

Страница 75: ...ith the paten block released Automatic loading is not allowed Set the thermal paper straight to the printer and leave at least 5 cm of the thermal paper come out from the printer When setting the platen block the reduction gear may interfere with the platen gear and may cause the platen block to not be set In such a case release the platen block and set it again If the thermal paper is skewed feed...

Страница 76: ...dy Clean the heat element shown in Figure 8 3 using a cotton swab dipped in ethyl alcohol or isopropyl alcohol Set the platen block after the alcohol has dried completely Heat element Platen release lever Figure 8 3 Cleaning Position of the Thermal Head 8 2 2 Precautions for Cleaning the Thermal Head Do not clean the thermal head immediately after printing because the temperature of the thermal he...

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