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Epson TM-T20IV Technical Reference Manual
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Epson TM-T20IV Technical Reference Manual

Epson TM-T20IV Technical Reference Manual

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Technical Reference Guide
Product Overview
Describes features of the product.
Setup
Describes setup and installation of the product and
peripherals.
Advanced Usage
Describes advanced usage methods for the product.
Application Development Information
Describes how to control the printer and necessary
information when you develop applications.
Handling
Describes how to handle the product.
Replacement of the TM-T20III
Describes precautions for replacement.
Appendix
Describes general speci cations and character code tables.
M00165900
Rev. A

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Summary of Contents for Epson TM-T20IV

  • Page 1 Technical Reference Guide Product Overview Describes features of the product. Setup Describes setup and installation of the product and peripherals. Advanced Usage Describes advanced usage methods for the product. Application Development Information Describes how to control the printer and necessary information when you develop applications.

  • Page 2: Esc/Pos Command System

    • Neither is any liability assumed for damages resulting from the use of the information contained herein. • Neither Seiko Epson Corporation nor its affiliates shall be liable to the purchaser of this product or third parties for damages, losses, costs, or expenses incurred by the purchaser or third parties as a result of: accident, misuse, or abuse of this product or unauthorized modifications, repairs, or alterations to this product, or (excluding the U.S.) failure to strictly comply with Seiko Epson Corporation's operating and...

  • Page 3: For Safety

    For Safety Key to Symbols The symbols in this manual are identified by their level of importance, as defined below. Read the following carefully before handling the product. You must follow warnings carefully to avoid serious bodily injury. WARNING Provides information that must be observed to prevent damage to the equipment or loss of data. •...

  • Page 4: Cautions

    • If water or other liquid spills into this equipment, do not continue to use it. Continued use may lead to fire. Unplug the power cord immediately and contact qualified service personnel. WARNING • Do not use aerosol sprayers containing flammable gas inside or around this product. Doing so may cause fire.

  • Page 5: Note About Interference

    Seiko Epson Corporation. Open Source Software License This product uses open source software in addition to Epson proprietary software. For information of the open source software used in this product, see the following URL.

  • Page 6: About This Manual

    About this Manual Aim of the Manual This manual provides developers/engineers with all the necessary information for design, development and installation of a POS system, and also design and development of a printer application. Manual Content The manual is made up of the following sections: Chapter 1 Product Overview Chapter 2...

  • Page 7: Table Of Contents

    Contents For Safety..........................3 Key to Symbols.................................. 3 Warnings ..................................... 3 Cautions....................................4 Caution Labels .........................4 Restriction of Use ........................4 Note About Interference......................5 Open Source Software License ........................... 5 About this Manual ........................6 Aim of the Manual ................................6 Manual Content................................6 Contents............................7 Product Overview ..................
  • Page 8 Setup ....................... 25 Flow of Setup ........................25 Installing the Printer......................26 Installing the Printer Vertically ..........................26 Hanging the Printer on a Wall............................27 Adjusting the Roll Paper Near-End Sensor..............29 Connecting the AC adapter....................30 Connecting Procedure ..............................30 Connecting the Printer to the Host................... 31 USB Interface ...................................31 Serial Interface ................................31 Ethernet Interface ................................32...
  • Page 9 Application Development Information............65 Controlling the Printer ......................65 ePOS-Print XML................................65 ESC/POS.....................................65 Controlling the Cash Drawer....................66 Controlling the Optional External Buzzer ............... 67 Software..........................68 Development Kits ................................68 Drivers ....................................69 Utilities ....................................70 Others....................................70 Download ..................................70 Precautions when Developing Applications ..............71 Power Button Settings ..............................71 Notes on Printing Barcodes and Two-dimensional Symbols .................71 Automatic Certificate Update Feature ................
  • Page 10 Appendix......................85 Product Specifications ......................85 Printing Specifications ..............................86 Character Specifications ..............................87 Paper Specifications ..............................88 Printable Area ..................................89 Printing and Cutting Positions ..........................91 Electrical Characteristics..............................92 Environmental Conditions............................93 External Dimensions and Weight ..........................94 Specifications of Interfaces and Connectors ..............95 USB Interface ...................................95 RS-232 Serial Interface ..............................96 Network Interface ...............................

  • Page 11: Product Overview

    Chapter 1 Product Overview Product Overview This chapter describes features of the product. Features Printing • High speed receipt printing is possible (250 mm/s {9.84 in./s} maximum). • Switching from 80 mm {3.15 in.} width paper printing to 58 mm {2.28 in.} width paper printing is available. Handling Easy drop-in paper loading Software...

  • Page 12: Product Configurations

    Chapter 1 Product Overview Product Configurations Models • USB/Serial • USB/Ethernet/Serial Accessories Included • Roll paper (for operation check) • Wall hanging bracket • Rubber feet for vertical installation • 58 mm {2.28 in.} width roll paper guide • AC adapter •...

  • Page 13: Parts And Functions

    Chapter 1 Product Overview Parts and Functions Roll paper cover Open this cover to install/replace the roll paper. Cover knob Put your finger under the knob and lift open the roll paper cover. Cutter cover If the roll paper cover will not open due to a paper jam, open this cover and unlock the autocutter blade.

  • Page 14: Led Lights

    Chapter 1 Product Overview LED lights • On when the printer is powered on. Power LED • Off when the printer is powered off. Error LED Lights or flashes when the printer is offline. (For information about the lighting and flashing patterns, see "Status and Errors"...

  • Page 15: Connectors

    Chapter 1 Product Overview Connectors All connectors are located on the lower rear of the printer. The interface installed differs according to the model. USB/Ethernet/Serial model Serial interface Serial interface cable connector for connection to computer. USB connector (Type-A) Use only for connecting optional Wireless LAN unit. USB connector (Type-B) USB cable connector for connection to computer.
  • Page 16 Chapter 1 Product Overview USB/Serial model Do not remove the interface board installed on this product. Serial interface Serial interface cable connector for connection to computer. Power supply connector DC cable connector. U"Connecting the AC adapter" on page 30 USB connector (Type-B) USB cable connector for connection to computer.

  • Page 17: Status And Errors

    Chapter 1 Product Overview Status and Errors The LEDs light or flash to indicate the printer status. The printer cannot print while an error is left unsolved. Online and Offline Online The printer is online and ready for normal printing unless there is a reason to go offline. Offline The printer automatically goes offline under the following conditions: •...

  • Page 18: Recoverable Errors

    The error recovery command is valid only if a recoverable error (excluding automatically recoverable errors) occurs. Use the TM-T20IV Utility to change the condition for recovery. For details, see the TM-T20IV Utility User's Manual. Unrecoverable Errors The printer cannot print when an unrecoverable error occurs.

  • Page 19: Status Display

    Chapter 1 Product Overview Status Display O: ON k: Flashing N: OFF -: Changes depending on whether or not paper is detected. Power LED Error LED Paper LED Online Initializing after power-on Running a self-test Waiting to continue self-test Feeding using the Feed button Waiting to execute a macro Roll paper cover open while the printer is not printing...

  • Page 20: Nv Memory

    • R/E (Receipt Enhancement) • User-defined page • Maintenance counter Epson recommends that changes to NV memory be performed no more than 10 times a day, if any. CAUTION NV Graphics Memory Graphics, such as shop logos to be printed on receipts, can be stored. Even with a serial interface model whose transmission speed is low, high speed graphics printing is possible.

  • Page 21: User-Defined Page

    Chapter 1 Product Overview User-defined Page You can store character data in the user-defined page (character code table: page 255) so that you can also print characters not resident in the printer. Maintenance Counter With this function, printer information, such as the number of lines printed, the number of paper autocuts, and printer operation time after the printer starts working, is automatically stored in NV memory.

  • Page 22: Simple Setup For Wireless Lan (When Ot-Wl06 Is Used)

    Chapter 1 Product Overview Simple Setup for Wireless LAN (when OT-WL06 is used) The printer has “SimpleAP” mode that allows a device to directly connect to the printer without using an access point. This makes it easy to set up a printer to connect to a wireless LAN using the printer setting tool, without having to go through a network environment such as an access point.

  • Page 23: About Simpleap

    • The printer can be connected to Wi-Fi Direct and a wireless LAN or a wired LAN at the same time. • Wi-Fi Direct settings can be checked or changed using Web Config or TM-T20IV Utility. For details, check the Web Config Reference Guide or the TM-T20IV Utility User's Manual.

  • Page 24: Useful Functions For Smart Devices

    By using the acquired information, the device can specify the printer to send a print job over a network or Bluetooth. • Programming using Epson ePOS SDK is required to use these functions. These functions are created by combining NFC touch and QR code capturing operations and the target printer specifications using Printer Easy Select API.

  • Page 25: Setup

    Chapter 2 Setup Setup This chapter describes setup and installation of the product and peripherals. Flow of Setup This chapter consists of the following sections along with the setup flow of the product and peripherals. Installing the Printer (page 26) Adjusting the Roll Paper Near-End Sensor (page 29) Connecting the AC adapter (page 30) Connecting the Printer to the Host (page 31)

  • Page 26: Installing The Printer

    Chapter 2 Setup Installing the Printer You can install the printer horizontally on a flat surface (with the paper exit on top) or vertically (with the paper exit at the front). Also, you can hang it on a wall using the included accessories. Horizontal installation Vertical installation Hanging on a wall...

  • Page 27: Hanging The Printer On A Wall

    Chapter 2 Setup Hanging the Printer on a Wall To securely hang the printer on a wall, follow the steps below. • Hang the printer on a wood, concrete, or metal wall. The thickness of the wall should be 10 mm {0.4 in.} or more.
  • Page 28 Chapter 2 Setup Align the holes in the wall hanging bracket with the screws on the wall, and hook it securely.

  • Page 29: Adjusting The Roll Paper Near-End Sensor

    Chapter 2 Setup Adjusting the Roll Paper Near-End Sensor Below are two situations where a roll paper near-end sensor adjustment is required. • To adjust the detection position to suit the diameter of the roll paper core used. • To adjust the detection position of remaining amount of paper. •...

  • Page 30: Connecting The Ac Adapter

    Chapter 2 Setup Connecting the AC adapter Use the Epson AC adapter, C1 or an equivalent product as the AC adapter. • Never insert the AC cable plug into a socket that does not meet the input voltage of the AC adapter.

  • Page 31: Connecting The Printer To The Host

    Chapter 2 Setup Connecting the Printer to the Host • Be sure to install the driver before connecting the printer to the host computer. • The DK connector specifically designed for use with a cashdrawer or the optional external buzzer. Do not connect this connector into a wired telephone system. USB Interface When using USB cable to connect with host device, connect the USB cable to the printer, and after starting the host device, turn the printer on.

  • Page 32: Ethernet Interface

    Use an Ethernet cable to connect the printer to network via a hub. Use Epson TM-T20IV Utility or Web Config to set network. For detailed information about the Epson TM-T20IV Utility, refer to the TM-T20IV Utility User's Manual. For details on Web Config, refer to Web Config Reference Guide.

  • Page 33: Wireless Lan Interface (When Ot-Wl06 Is Used)

    When setting up multiple printers, you can connect using a wired cable (LAN/USB) and setup a wireless LAN using the Epson Deployment Tool. Using Epson TM Utility for iOS/Android, you can easily connect the printer to the network from an iOS or Android devices.

  • Page 34: Setup Procedure

    Setting up using Web Config How to set up using Web Config is also introduced in the video manual. You can access the manual from the URL below. U https://support.epson.net/p_doc/a5d/ Necessary Items Prepare the following items. A device for the setup which has a web browser.
  • Page 35 Chapter 2 Setup Scan the QR code on the “SimpleAP Start” sheet with the device for setup and connect it to the printer. If the device cannot scan the QR code, open the Wi-Fi settings screen of the device, select the SSID printed on the “SimpleAP Start”...
  • Page 36 Chapter 2 Setup Enter the password and select [OK] to log in to Web Config. For information about the default password, see "Default administrator password for setting" on page 105. From the list of SSIDs displayed, select the SSID of the network you want to connect to and select [OK].
  • Page 37 If the printer is not displayed, press the “Add Port” button, and then add the printer connected by USB. Perform network I/F as well as TCP/IP settings. For details, see the TM-T20IV Utility User's Manual. When you have finished making settings, disconnect the USB cable, turn off the printer, and then turn it back on.
  • Page 38 Necessary Items Prepare the following items. • Device for setting: iOS or Android device • Utility for setting: Epson TM Utility for iOS/Android Running Epson TM Utility for iOS/Android Run the Epson TM Utility for iOS/Android. Set from “Wi-Fi Setup Wizard” in the menu.

  • Page 39: Connecting The Cash Drawer

    • The cash drawer cannot be used If the enable/disable setting for the optional external buzzer is set to “enable”. When using the cash drawer, be sure to set it to “disable” using the Epson TM- T20IV Utility.

  • Page 40: Connecting The Drawer Kick Cable

    Chapter 2 Setup Pin assignments Pin number Signal name Direction Frame GND Drawer kick drive signal 1 Output Drawer kick open/close signal Input +24 V Drawer kick drive signal 2 Output 6 5 4 3 2 1 Signal GND Connecting the Drawer Kick Cable •...

  • Page 41: Connecting The Optional External Buzzer

    Settings for sound patterns and frequency depending on the occasions the buzzer beeps are also available. Use the TM-T20IV Utility to make the buzzer settings: enable/disable setting, sound pattern setting, and frequency setting. • Be sure to turn off the printer before you connect/disconnect the optional external buzzer.
  • Page 42 Chapter 2 Setup Turn off the printer. Clean and dry the printer case where the buzzer will be installed. With 2 included pieces of the affixing tape combined, peel off the backing paper on one side, and stick the tape in the center of the attaching surface of the buzzer unit. Affixing tape Connect the cable of the buzzer to the drawer kick connector on the printer.

  • Page 43: Connecting The Optional Wireless Lan Unit

    Chapter 2 Setup Connecting the Optional Wireless LAN Unit For USB/Ethernet/Serial model users, the printer can be connected wirelessly by connecting the optional wireless LAN cable set (OT-WL06) to the printer. For more information, refer to User’s Manual of the Wireless LAN cable set. •...

  • Page 44: Changing The Paper Width

    Chapter 2 Setup Changing the Paper Width You can change the paper width from 80 to 58 mm {3.15 to 2.28 in.} by installing the included 58-mm {2.28 in.} width roll paper guide. Follow the steps below to change the paper width. Because some parts of the print head and the autocutter contact the platen and they may become worn out, once you change the paper width from 80 to 58 mm {3.15 to 2.28 in.} and use the printer, you cannot change it back to 80 mm {3.15 in.}.

  • Page 45: Advanced Usage

    Paper Width & Print Column Buzzer Control Near-end Detection Power Supply Unit Capacity • For detailed information about the Epson TM-T20IV Utility, refer to the TM-T20IV Utility User's Manual. • For information about how to use the memory switch setting mode, see "Software Setting...

  • Page 46: Overview Of Each Function

    Chapter 3 Advanced Usage Overview of Each Function Interface Settings Serial Baud rate • 2400 bps • 4800 bps • 9600 bps • 19200 bps • 38400 bps (Initial setting) • 57600 bps • 115200 bps Serial Parity • None (Initial setting) •...

  • Page 47: Auto Line Feed

    Chapter 3 Advanced Usage Receive Buffer Capacity • 4 KB (Initial setting) • 128 KB BUSY Condition • Receive Buffer Full or Offline (Initial setting) • Receive Buffer Full • In either case above, the printer enters the BUSY state after power is turned on, and when a self- test is being run.

  • Page 48: Print Density

    Chapter 3 Advanced Usage Main connection interface • Com (Serial) • Built-in USB • Ethernet/Wi-Fi (USB/Ethernet/Serial model only) • Auto (Initial setting) • No main connection I/F Print Density Selectable from +3 to -3 (dark to light) Initial setting: 0 Depending on the paper type, it is recommended to set the printer density for the best print quality.

  • Page 49: Buzzer Control

    • Enable (Initial setting) • Disable Character/Column Settings Refer to the following URL regarding the Code page and the International character set. https://support.epson.net/publist/reference_en/ Code Page Selectable from 43 pages including user-defined page Initial setting: PC437: USA, Standard Europe International Character Set...
  • Page 50 Chapter 3 Advanced Usage Sound Pattern (Error) • Default (Initial setting) • Selectable from Patterns A to E Buzzer Frequency (Error) • Continuous (Initial setting) • 1 time • No sound Sound Pattern (Auto Cut) Selectable from Patterns A to E Initial setting: Pattern A Buzzer Frequency (Auto Cut) •...

  • Page 51: Near-End Detection

    Chapter 3 Advanced Usage Initial setting: Pattern D Buzzer Frequency (Power On) • 1 time (Initial setting) • No sound Near-end Detection • Disabled (Initial setting) • Enabled Power Supply Unit Capacity • Level 1 (Low) • Level 2 • Level 3 (High) (Initial setting)

  • Page 52: Setting/Checking Modes

    Chapter 3 Advanced Usage Setting/Checking Modes As well as print mode, the following modes are also provided for making various printer settings and checking items. • Self-test mode • NV graphics information print mode • Receipt Enhancement information print mode •...
  • Page 53 Chapter 3 Advanced Usage In (1) and (2), the following guidances are printed, the Paper LED flashes, and instructs the user's operations. 1. Continuing self-test guidance 2. Mode selection guidance...

  • Page 54: Self-Test Mode

    Chapter 3 Advanced Usage Self-test Mode You can check the following items using the self-test. • Product name • Firmware version • Product serial number • Interface information • Resident fonts • Maintenance counter information (print head running length, number of times of auto-cutting) Follow the steps below.

  • Page 55: Receipt Enhancement Information Print Mode

    Chapter 3 Advanced Usage After briefly (less than one second) pressing the Feed button once, hold it down for at least one second, to print the NV graphics information. After information printing, the Mode selection guidance is printed again. To finish, turn off the power, or select “Exit and Reboot Printer”. Receipt Enhancement Information Print Mode You can check the following items using the R/E information mode: •...
  • Page 56 Chapter 3 Advanced Usage Briefly press the Feed button three times (less than one second), hold it down for at least one second to enter the Software setting mode (Customized Value Settings). The Software setting mode guidance is printed, and the Paper LED flashes. Customize Value Settings Modes 0: Exit...

  • Page 57: Restore Default Values Mode

    Chapter 3 Advanced Usage Restore Default Values Mode In Restore default values mode, following values saved on NV Memory will be set back to default settings. When any error occurs, you can use to specify the reason. Restore Default Values Setting Contents Setting Items and Delete Defined Data...

  • Page 58: Interface Setup Mode

    Chapter 3 Advanced Usage Interface Setup Mode Use this mode to setup the interface and other settings. Follow the steps below. After running a self-test, hold down the Feed button for at least one second to enter the Mode selection. The Mode selection guidance is printed, and the Paper LED flashes.

  • Page 59: Peripheral Device Information Print Mode

    Chapter 3 Advanced Usage Peripheral Device Information Print Mode This function allows you to print information for the device (Wi-Fi adapter information) currently connected to the printer. Follow the steps below. After running a self-test, hold down the Feed button for at least one second to enter the Mode selection.

  • Page 60: Hexadecimal Dumping Mode

    Chapter 3 Advanced Usage Hexadecimal Dumping Mode In the hexadecimal dumping mode, the printer prints the data transmitted from a host computer in hexadecimal numbers and their corresponding characters. It enables you to check if data is transmitted to the printer correctly.

  • Page 61: Printing A Status Sheet

    Chapter 3 Advanced Usage Printing a Status Sheet Follow the steps below to check the interface settings. • Ethernet and Wi-Fi status sheets are not printed while the printing communication protocol is being established. They will be printed after the connection is cut off (including being cut due to a time out).
  • Page 62 Chapter 3 Advanced Usage Press the Feed button briefly (less than one second) the number of times equal to the number indicated to the left of the status sheet you want to print, then hold down the button for at least one second. Printing of a status sheet will start.

  • Page 63: Resetting The Interface Settings

    Chapter 3 Advanced Usage Resetting the Interface Settings Follow the steps below to reset the interface settings. • You can return the interface settings to their defaults from the Interface Setup mode. For details on the Interface Setup mode, see "Interface Setup Mode"...

  • Page 64: Web Config

    Chapter 3 Advanced Usage Web Config Web Config is a printer's built-in web page that allows you to check and change printer settings on your browser. To use Web Config, you need to set your computer's IP address to the same segment as the printer. How to Start Web Config Start your web browser on a computer or smart device on the network and enter the IP address of the printer in the address field.

  • Page 65: Application Development Information

    • Epson ePOS SDK ePOS-Print XML ePOS-Print XML is the Epson original control command system for POS printers defined in XML. With ePOS- Print XML commands, you can print in environments where http communication is available and from OS applications. For detailed information about ePOS-Print XML, see the ePOS-Print XML User's Manual.

  • Page 66: Controlling The Cash Drawer

    Register a cash drawer using the SetupPOS Utility, and control using the OpenDrawer method or the DirectIO function. For details, see the “EPSON OPOS ADK for .NET MANUAL Application Development Guide Cash Drawer (EPSON Standard)” and the “UnifiedPOS Specification”. Epson ePOS SDK The output command for the drawer kick pulse and the status transmission command are provided in each SDK library.

  • Page 67: Controlling The Optional External Buzzer

    POSPrinter (TM Series)”. OPOS for .NET Register a POS printer using the SetupPOS Utility and control using the DirectIO function. For details, see the “EPSON OPOS ADK for .NET MANUAL Application Development Guide POS Printer”. Epson ePOS SDK The command for the buzzer function is provided in each SDK library. For details, see the user's manuals provided with each SDK.

  • Page 68: Software

    When developing applications, use a separate development environment such as Microsoft Visual Studio .NET. EPSON JavaPOS ADK (Windows/Linux) JavaPOS is the standard specification which defines an architecture and device interface (API) to access various POS devices from a Java based system. Using JavaPOS standard API allows control with Java based applications of functions inherent to each device.

  • Page 69: Drivers

    In addition to ordinary Windows printer driver functions, this driver has Windows Printer Driver (APD) controls specific to POS. The Status API (Epson original DLL) that monitors printer status and sends ESC/POS commands is also attached to this driver. EPSON TM Virtual Port...

  • Page 70: Utilities

    TM printers at the same time. Epson Monitoring Tool Use to check a list of status for the Epson printers connected to the Windows network. You can also update certificates for multiple printers in a batch.

  • Page 71: Precautions When Developing Applications

    Chapter 4 Application Development Information Precautions when Developing Applications This section describes information that you should be aware of when developing systems and applications using this product. Power Button Settings This function allows you to disable turning the printer on and off with the power button. See "Software Settings"...
  • Page 72 Chapter 4 Application Development Information • When printing ladder barcodes or two-dimensional symbols with graphics printing, use one of the following settings. - Select the appropriate print control mode. (Recommended) - Set the print speed to Level 6. The print control mode and the print speed can be selected using the ESC/POS command.

  • Page 73: Automatic Certificate Update Feature

    Automatic certi cate update service (1) The printer downloads a certificate from the Epson-managed server and sends the host name and IP address. (2) The Epson server sets the host name and IP address to the DNS. (3) The host device uses a browser and web application to print.

  • Page 74: Use Environment

    • This function requires ISRG Root X1 in the host device certificate store. • When saving the settings of the printer using TM-T20IV Utility or Epson TM Utility, save the security certificate as well. Otherwise, the settings may not be restored correctly.

  • Page 75: Printer Settings

    The host name is generated by converting the serial number of the printer. A program to enter the printer’s serial number is necessary on the application side. Refer to the sample programs in Epson ePOS SDK for JavaScript for information on how to convert to the host name.

  • Page 76: Handling

    Chapter 5 Handling Handling This chapter describes basic handling of the printer. Installing and Replacing Roll Paper • Do not open the roll paper cover during printing. The printer may be damaged. • Do not touch the manual cutter with your hands when installing or replacing the roll paper. CAUTION Otherwise, you may be injured because the manual cutter blade is sharp.
  • Page 77 Chapter 5 Handling Pull out some roll paper, and close the roll paper cover.

  • Page 78: Removing Jammed Paper

    Chapter 5 Handling Removing Jammed Paper When a paper jam occurs, never pull out the paper forcibly. Open the roll paper cover, and then remove the jammed paper. Do not touch the thermal head. (See "Cleaning the Thermal Head/Platen Roller" on page 80.) After printing, the thermal head and its surroundings can be very hot.
  • Page 79 Chapter 5 Handling Turn the knob until you see a triangle in the opening. This returns the cutter blade to the normal position. Refer to the operation instructions engraved on the back of the cutter cover. Triangle Knob Close the cutter cover. Open the roll paper cover and remove the jammed paper.

  • Page 80: Cleaning The Printer

    Cleaning the Thermal Head/Platen Roller Epson recommends cleaning the thermal head periodically (generally every 3 months) to maintain receipt print quality. Depending on the roll paper used, paper dust may stick to the platen roller and cause an irregular paper feed.

  • Page 81: Preparing For Transport

    Disconnect the AC cable. Remove the roll paper. Pack the printer upright. Checking the Nameplate The nameplate is affixed to the side of the printer. It shows the product name, model number, and serial number. Product name Model number TM-T20IV Serial number...

  • Page 82: Precautions When Using The Printer As A Self-Service Terminal

    Chapter 5 Handling Precautions when Using the Printer as a Self-Service Terminal When using this printer as a self-service terminal, ensure that there is at least 10 mm of space above the paper exit. If the paper exit is completely blocked, a paper jam may occur. Self-service terminal Roll paper Paper exit...

  • Page 83: Replacement Of The Tm-T20Iii

    Chapter 6 Replacement of the TM-T20III Replacement of the TM-T20III The TM-T20IV is designed so that it can smoothly replace the TM-T20III. This chapter describes precautions for the replacement. Compatibility Printing The printing and character specifications are the same as those of the TM-T20III. Without special configurations, the TM-T20IV prints the same results as the TM-T20III prints.

  • Page 84: Overall Dimensions

    Chapter 6 Replacement of the TM-T20III Overall Dimensions You can place the TM-T20IV in the same location as the TM-T20III, since its overall dimensions and weight are almost the same as those of the TM-T20III. TM-T20III TM-T20IV W:140 × D:199 × H:146 mm Approx. 1.7 kg W:146 ×...

  • Page 85: Appendix

    Appendix Appendix Product Specifications Printing method Thermal line printing Paper feed speed Approx. 200 mm/s {approx. 7.88 in./s} (continuous paper feeding with the Feed button) Cutting Method Partial cut (cutting with one point at left uncut) Interface USB/Serial model USB: USB (Type-B) Serial: RS-232 (25 pin) USB/Ethernet/Serial model USB: USB (Type-B)

  • Page 86: Printing Specifications

    Appendix *3: Indicates the mean time between failures during the random failure period. *4: Indicates the overall mean time between failures, including wear-out and random failures, before the life is reached. Printing Specifications 80 mm {3.15 in.} wide 58 mm {2.28 in.} wide paper paper Printing method...

  • Page 87: Character Specifications

    1.25 × 3.00 mm {0.05 × 0.12 in.} *: Space between characters is not included. Characters can be scaled up to 64 times as large as the standard size. Refer to the following URL regarding the character code table. https://support.epson.net/publist/reference_en/...

  • Page 88: Paper Specifications

    Specified original paper type P5047(55) (Mitsubishi HiTec Paper Flensburg GmbH) KT55FA, KT48FA, KT55PF, KT48PF (Papierfabrik August Koehler SE) Epson Certified Media List for Thermal Receipt Printers https://support.epson.net/publist/bsredirect.php?code=M001035 • Paper must not be pasted to the roll paper spool. • For the best print quality for each paper type, it is recommended to set the print density. (See "Software Settings"...

  • Page 89: Printable Area

    Appendix Printable Area 80 mm {3.15 in.} wide paper printing The maximum printable area of paper with a width of 79.5 ± 0.5 mm {3.13 ± 0.02 in.} is 72.0 ± 0.2 mm {2.83 ± 0.008 in.} (576 dots) and the approximate space is 3.0 mm {0.12 in.} on the left side and 4.5 mm {0.18 in.} on the right side.
  • Page 90 Appendix 58 mm {2.28 in.} wide paper printing The maximum printable area of paper with a width of 57.5 ± 0.5 mm {2.26 ± 0.02 in.} is 52.5 ± 0.2 mm {2.07 ± 0.008 in.} (420 dots), and the approximate space is 3.0 mm {0.12 in.} on the left side and 2.0 mm {0.079 in.} on the right side.

  • Page 91: Printing And Cutting Positions

    Appendix Printing and Cutting Positions Manual cutter position Approx. 27.1 mm {1.07 in.} Approx. 10.5 mm Autocutter blade position {0.41 in.} Printable area Center of the print dotline Paper feed direction • The values above may vary slightly as a result of paper slack or variations in the paper. Take this into account when setting the cutting position of the autocutter.

  • Page 92: Electrical Characteristics

    Appendix Electrical Characteristics Supply voltage DC24 V±7% Rated current 1.5 A If printing is continuously performed with a high print ratio, the overcurrent protection may be activated and result in uneven print density or a low voltage error. Therefore, the printing length must not exceed the following values when printing with high print ratio.

  • Page 93: Environmental Conditions

    Acoustic noise (operating) Approx. 55 dB (bystander position) Note: The values above are measured in the Epson evaluation condition. Acoustic noise differs depending on the paper used, printing contents, and the setting values, such as print speed or print density.

  • Page 94: External Dimensions And Weight

    Appendix External Dimensions and Weight • Width: Approx. 146 mm {5.75 in.} • Depth: Approx. 199 mm {7.84 in.} • Height: Approx. 146 mm {5.75 in.} • Weight: Approx. 1.7 kg {3.75 lb} (excluding roll paper) [Units: mm]...

  • Page 95: Specifications Of Interfaces And Connectors

    Appendix Specifications of Interfaces and Connectors USB Interface The printer is equipped with the following USB interfaces. • USB-A connector • USB-B connector • Use a USB cable that complies with the USB 2.0 standard. Using a non-compliant cable may cause the printer to malfunction due to static electricity.

  • Page 96: Rs-232 Serial Interface

    Vendor ID 04B8h 04B8h Product ID 0202h 0E39h Manufacturer EPSON EPSON Product TM-T20IV TM-T20IV String Descriptor Serial number Character string based on the Character string based on the product serial number product serial number RS-232 Serial Interface Specifications (RS-232-compliant) Item...
  • Page 97 Appendix Functions of each connector pin (D-SUB25) Signal Signal Pin no. Function name direction Frame ground Output Transmission data Input Reception data Output Equivalent to DTR signal (pin 20) Input This signal indicates whether the host computer can receive data. SPACE indicates that the host computer can receive data.
  • Page 98 Appendix Functions of each connector pin (D-SUB9) Signal Signal Pin no. Function name direction Input Reception data Output Transmission data Output 1) When DTR/DSR control is selected, this signal indicates whether the printer is BUSY. • SPACE status Indicates that the printer is ready to receive data. •...
  • Page 99 Appendix XON/XOFF When XON/XOFF control is selected, the printer transmits the XON or XOFF signals as follows. The transmission timing differs, depending on the BUSY condition. BUSY condition Signal Printer status Receive buffer full/ Receive buffer full Offline When the printer goes online after turning on the power Transmit Transmit (or reset using the interface)

  • Page 100: Network Interface

    Appendix Network Interface For both Ethernet interface and Wi-Fi interface Support protocols Protocols Usage IP, ARP, ICMP, UDP, TCP Basic communication protocols LP, LPR Printing protocols TCP Socket Port Used to transfer printing data and printer status via (bidirectional) direct socket communication.

  • Page 101: Printing Communication Protocol

    Appendix Item Default settings Time Server Disable Time Server Status Invalid Time Server Address 0.0.0.0 Time Serer Interval Time Zone ±0 (UTC) Bonjour Enable Enable LLTD Enable LLMNR Enable SSL Encryption Strength 128 bit TLS1.0 Disable TLS1.1 Disable TLS1.2 Enable https redirect Enable MAC Address...
  • Page 102 Appendix For Ethernet interface Communication specifications 10BASE-T/100BASE-TX LED Status Indication LED status Description Lit green Connecting at one of the speeds Blinking green Sending/receiving data Not connected Lit orange Connecting using 100BASE-TX Connecting using 10BASE-T...

  • Page 103: Specification

    SSID EPSON_Printer Encryption type WPA2-PSK Passphrase EpsonNet IP Address Automatically acquired by DHCP Settings in SimpleAP mode (Factory default settings) Parameter Setting value SSID DIRECT-"TM-T20IV"-"serial number" Passphrase "Default administrator password for setting" on page 105 IP Address 192.168.223.1 or 172.16.10.1...

  • Page 104: Notes On Use

    Wi-Fi communication performance may be degraded. Both of these issues may be improved by disabling the Wi-Fi power saving function (Power Save). However, since the power saving function is disabled, the printer will consume more power. The setting can be changed using Web Config or TM-T20IV Utility.

  • Page 105: Default Administrator Password For Setting

    Appendix Default administrator password for setting The default password and the passphrase are as follows: Password label Password Attached on the product Printed on the label Not attached on the product Product serial number (10-digit alphanumeric characters, case-sensitive) The password label is attached at the location shown below. Password label The product's serial number can be found on the nameplate.
  • Page 106 If the password label is lost, the default password can be checked by printing the status sheet. To improve security, it is recommended to change the administrator password from the default password. The password can be changed using Web Config, TM-T20IV Utility, or Epson TM Utility.