Related Manuals for APS EPM208 Series
Summary of Contents for APS EPM208 Series
- Page 1 Advanced Printing Systems Front page EPM208-LV EPM208-HS Technical Reference EPM208 - Technical reference - Rev. A Page...
- Page 2 Advanced Printing Systems Preface • This manual provides a complete technical information about EPM208 series, thermal line printer mechanisms. • If not specified, the data of the present specification are valid for all the types of printers, when the specification of the printer is different, according to the type, its specification is described with annotation.
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Page 3: Table Of Contents
Advanced Printing Systems TABLE OF CONTENTS Sec. Page INTRODUCTION ......................... 4 1.1. EPM208 ........................5 FEATURES GENERAL CHARACTERISTICS ....................6 THERMAL HEAD AND PRINTING CONFIGURATION ..............7 3.1..........................7 UTLINES 3.2................7 HERMAL HEAD ELECTRICAL CHARACTERISTICS 3.3..........................8 IMING CHART 3.4. -
Page 4: Introduction
Advanced Printing Systems INTRODUCTION The EPM208 is a 2 inch, from 3.0V to 9.5V, Easy Loading Printing Module with an integrated paper roll housing. The EPM module consists of a set of mechanical and electrical parts, these parts have been designed to have an high grade of integration between Printer and Housing. -
Page 5: Epm208 Features
Advanced Printing Systems 1.1. EPM208 features • Patented Easy loading and Easy Door Opening System • Ultra compact design • Up to 80 mm/s printing speed • Ultra light (95g) • Starting operating voltage (logic and dots) from 3.0V • High resolution printing (8 dots/mm) •... -
Page 6: General Characteristics
Advanced Printing Systems GENERAL CHARACTERISTICS Item Specification Printing method Thermal dot line printing Number of dots/line Dots density (dot/mm) Printing width (mm) 48 (centred on paper) Paper width (mm) 58 +0/-1 Paper roll size (mm) Max. Ø49.5 (outside diameter) Paper feed pitch (mm) 0.0625 (every 1 step of the motor drive signal) Printing pitch (mm) -
Page 7: Thermal Head And Printing Configuration
Advanced Printing Systems THERMAL HEAD AND PRINTING CONFIGURATION 3.1. Outlines Heat element structure: 2 heaters/dot Number of heat elements: 384 dots Heat element pitch: 0.125 mm Average resistance: LV - 116 Ω ±10% HS - 165 Ω ±10% 3.2. Thermal head electrical characteristics Item Symbol Min. -
Page 8: Timing Chart
Advanced Printing Systems 3.3. Timing chart The following chart gives the timing for driving the print-head: f CLK Clock thold DI tsetup DI Data In tsetup LAT \Latch tsetup STB tw LAT Strobe Driver Out EPM208 - Technical reference - Rev. -
Page 9: Maximum Conditions At 25°C
Advanced Printing Systems 3.4. Maximum conditions at 25°C Item Maximum conditions Unit Supply energy 0.416 0.367 mJ/dot Print cycle ms/line Print head voltage Logic voltage Head temperature °C Number of dots to be energized dots simultaneously Notes: • If energy applied to one dot, exceed the maximum value indicated on the above table, the print quality of this dot may be definitively affected (usually makes a “light”... -
Page 10: Heating Time Calculation
Advanced Printing Systems 3.6. Heating time calculation The following formula allows to calculate the heating time T depending on driving voltage VH: (N * R + R + R + R ) = E * V * R Where: is the nominal energy is the driving voltage is the average resistance N is the number of dots energized simultaneously... -
Page 11: Print Position Of The Data
Advanced Printing Systems 3.8. Print position of the data • The first bit of data (dot 1) entered is the first bit of data printed (FIFO), left side of TPH, top view (gearing side of the printer). • The table below shows the number of dots driven by each strobe signal. Dots 321 to 384 Dots 193 to 320 Dots 129 to 192... -
Page 12: Operating Precautions
Advanced Printing Systems 3.9. Operating precautions 1- When performing continuous printing, the supply energy should be reduced so that the substrate temperature, monitored through the thermistor, will remain below 65°C. 2- All strobes signals must be disabled during the power and logic voltage sequence. -
Page 13: Stepper Motor
It is recommended not to exceed 0.2v like voltage drop in the stepper motor driver circuit. Coil resistance is 12 Ω, rated current is 300 mA (5V) per phase while feeding at 10mm/s. In case of high voltage or continuous printing application, contact APS for current application circuitry. EPM208 - Technical reference - Rev. -
Page 14: Paper Feed Speed Versus Voltage
Advanced Printing Systems 4.2. Paper feed speed versus voltage The following table gives the maximum paper feed speed versus the stepper motor voltage and duty cycle for the stepper motor driving. Please note that green-shaded area must be used for EPM208-LV only while yellow-shaded area must be used for EPM208-HS only. -
Page 15: How To Optimize Speed, Consumption And Max. Peak Current
Advanced Printing Systems HOW TO OPTIMIZE SPEED, CONSUMPTION AND MAX. PEAK CURRENT The printing speed is always a compromise between 3 parameters : • Paper feed speed (function of voltage). • Head activation time Ton (function of voltage and temperature). •... -
Page 16: Sensors
Advanced Printing Systems SENSORS 6.1. Door open In order to optimize and decrease the number of elements of the EPM , the opto sensor performs dual functions - door open and end of paper detection. The shape and distance from the opto sensor to the paper is designed in a way that as soon as the door is opened, the distance between the paper and the sensor increases, and this causes the end of paper sensor to trigger. -
Page 17: Pin Out Assignment
Advanced Printing Systems PIN OUT ASSIGNMENT One flexy cable is gathering all signals. The pitch at the end of the flexy is 1mm. FPC connector can be: JST 27FMN-BMT-TF EPM208-LV-HS Pin number Signal name Function Collector of photo-transistor Anode of photo-sensor L-GND Gnd for logic Dot-line voltage... -
Page 18: Mechanical & Housing
Overall dimensions: See attached drawings for overall dimensions and recommended screws. 3D-IGES file, for mechanical details, is available upon request, ask APS for more information. Standard outward appearance: Housing colour is black, Cover is transparent uncoloured, Lever is green transparent, refer to photo on front page of the present document. - Page 19 Advanced Printing Systems EPM208 - Technical reference - Rev. A Page...
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Page 20: Mounting Precautions
Advanced Printing Systems 8.2. Mounting precautions Orientation according to figure A-B is to be preferred, reliability and life tests have been based only according to this orientation. Alternatively, it is possible to choose different orientation angles as shown in figures C-D-E. EPM208 - Technical reference - Rev. - Page 21 Advanced Printing Systems Mounting precautions (continued) EPM208 - Technical reference - Rev. A Page...
- Page 22 Advanced Printing Systems Mounting precautions (continued) EPM208 - Technical reference - Rev. A Page...
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Page 23: Handling The Epm
Advanced Printing Systems HANDLING THE EPM 9.1. How to open the cover group Lift the Lever, acting as indicated by the arrow, until the Cover Group is released from its locking position. To avoid damages to the Lever do not use excessive force. EPM208 - Technical reference - Rev. -
Page 24: How To Load Paper Rolls
Advanced Printing Systems 9.2. How to load paper rolls Step 1 Step 2 EPM208 - Technical reference - Rev. A Page... -
Page 25: How To Close The Cover Group Correctly
Advanced Printing Systems 9.3. How to close the Cover Group correctly Press on both sides of the Cover Group (simultaneously) Y E S Alternatively: Press on the middle area of Cover Group (near the paper exit). Y E S EPM208 - Technical reference - Rev. -
Page 26: How To Cut The Paper
Advanced Printing Systems How to close the Cover Group correctly (Continued) Do not close the Cover Group pressing only on one side. 9.4. How to cut the paper Pull the paper towards the Tear Bar from one side to the other. EPM208 - Technical reference - Rev. -
Page 27: Ordering Code
Advanced Printing Systems ORDERING CODE Type Ordering code EPM208 Low Voltage EPM208-LV EPM208 High Speed EPM208-HS EPM208 - Technical reference - Rev. A Page...
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