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Zebra GK420t

Zebra GK420t
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User Guide
Zebra
®
GK420t™
Desktop Thermal Printer

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Zebra GK420t Specifications

General IconGeneral
ColorNo
Maximum resolution203 x 203 DPI
Ribbon length74 m
Media thickness0.08 - 0.2 mm
Maximum media length991 mm
Maximum roll diameter127 mm
Supported paper width104 mm
Media thickness (imperial)0.003 - 0.0075 \
Maximum media length (imperial)39 \
Supported paper width (imperial)4.09 \
Standard interfacesEthernet
USB 1.1 ports quantity1
Connectivity technologyWired
Weight (imperial)4.6 lbs
Dimensions (WxDxH)194 x 254 x 191 mm
Flash memory4 MB
Certification-FCC Part 15, -Subpart 15, - VCCI, -C-Tick, -EN55022 Class-B, -EN6100-3-2, -EN6100-3-3, -EN55024, -CCC, -CB Scheme IEC 60950: 1991 +A1 +A2 + A3 +A4, -TUV NRTL, -IRAM, -NOM, -AAMI.
Internal memory8 MB
Built-in barcodesCode 39, Code 49, Code 93, MaxiCode, PDF417, Postnet, QR Code, UPC-A, UPC-E
Page description languagesEPL2
Storage temperature (T-T)-40 - 140 °F
Operating temperature (T-T)5 - 41 °C
Storage relative humidity (H-H)5 - 95 %
Operating relative humidity (H-H)10 - 90 %
Power requirements100 - 240 VAC, 50 - 60 Hz
Package weight4100 g
Weight and Dimensions IconWeight and Dimensions
Weight2100 g

Summary

FCC Compliance Statement

Environmental Management

About This Document

Who Should Use This Document

Identifies the intended audience for this user guide.

How This Document Is Organized

Explains the structure and organization of the user guide.

Contacts

Provides contact information for Zebra support and departments.

Document Conventions

Details symbols, formatting, and conventions used in the document.

Introduction

GK Series Thermal Printers

Overview of Zebra GK Series printers and their features.

Whats in the Box?

Lists the items included with the printer upon purchase.

Unpack and Inspect Printer

Instructions for unpacking and checking the printer for damage.

Your Printer Overview

Identifies external parts and controls of the printer.

Printer Features

Details the internal components and features of the printer.

Operator Controls

Explains the function of the power switch and feed button.

Feed Button Functions

Details the functions and operations of the feed button.

Status Light Indicators

Describes the printer's status light indicators.

Closing the Printer

Procedure for properly closing the printer cover.

Getting Started

Attaching Power

Instructions on how to connect the printer to a power source.

Loading Media

Steps for preparing and loading roll or fan-fold media into the printer.

Placing Media Roll

Detailed guide on how to place a media roll correctly in the compartment.

Loading Transfer Ribbon

Procedure for loading a transfer ribbon into the printer for thermal transfer printing.

Printer Configuration Test

How to print a label to verify printer configuration and settings.

Installing Printer Drivers

Guidance on installing printer drivers and utilities for Windows OS.

Connecting Printer Interfaces

Information on connecting the printer via USB, Serial, Parallel, and Ethernet.

Testing Printer Connection

Methods to test printer communications and verify installation after setup.

Print Operations

Printer Configuration Status

How to print and interpret the printer configuration status label.

Storage Recommendations

Recommendations for storing the printer to prevent damage.

Thermal Printing Safety

Safety precautions and considerations for thermal printing.

Printing Modes and Media Types

Describes printing modes and details compatible media types.

Media Type Determination

Procedure to determine if ribbon is needed for the media using a scratch test.

Replacing Printer Supplies

Guidance on replacing media or ribbon when depleted.

Adjusting Print Settings

How to adjust print width and quality settings for optimal output.

Media Sensing

Explains the printer's automatic media sensing capabilities and calibration.

Ribbon Usage and Testing

Information on ribbon types, usage, and testing methods.

Printing on Fan-Fold Media

Instructions for printing with fan-fold media, including guide adjustments.

Externally Mounted Media

Considerations for using externally mounted media rolls with the printer.

Printer Fonts and Localization

Information on printer font capabilities, code pages, and localization.

Stand Alone Printing

How to configure and use the printer without a computer connection.

Sending Files to Printer

Methods for sending graphics, fonts, and files to the printer.

Print Meter and EPL Line Mode

Details on print usage reporting and using EPL Line Mode printing.

Printer Options

Label Dispenser Option

Information and setup instructions for the label dispenser option.

ZebraNet 10100 Print Server

Details of the internal network print server option and its features.

Printer Network Configuration

How to print and interpret network configuration status labels.

Zebra KDU Accessory

Description and functions of the Keyboard Display Unit accessory.

KDU Plus Accessory

Details of the KDU Plus accessory, including connectivity and power.

ZBI 2.0 Zebra Basic Interpreter

Information on the ZBI 2.0 optional programming language for printer customization.

Maintenance

Printer Cleaning Procedures

General procedures and supplies for cleaning printer components.

Cleaning the Printhead

Step-by-step guide for cleaning the printer's sensitive printhead.

Media Path Cleaning

Guidance on cleaning the media path, guides, and rollers.

Sensor Cleaning

Instructions for cleaning the printer's media sensors to ensure proper detection.

Platen Cleaning and Replacement

Procedure for cleaning or replacing the platen roller for optimal performance.

Other Printer Maintenance

Notes on maintenance procedures beyond standard cleaning and replacement.

Replacing the Printhead

Detailed instructions for safely removing and installing a new printer printhead.

Troubleshooting

Status Light Descriptions

Explanation of printer status light codes and their meanings.

Status Light Error Resolutions

Troubleshooting steps and resolutions for printer status light errors.

Print Quality Problems

Common issues affecting print quality and their corresponding solutions.

Manual Calibration Procedure

Procedure for manually calibrating the printer, especially with pre-printed media.

Troubleshooting Tests

Tests to diagnose printer issues, including printing configuration labels.

Resetting Factory Defaults

How to reset printer settings to factory defaults to resolve issues.

Communications Diagnostics

Steps to diagnose data transfer problems between the printer and computer.

Feed Button Modes

Describes printer functions accessed by holding the Feed button during power-on.

Appendix: Interface Wiring

USB Interface Wiring

Details the wiring diagram and pin assignments for the USB interface.

Parallel Interface Wiring

Details the wiring diagram and pin assignments for the parallel interface.

Ethernet Interface Wiring

Provides pinout assignments for the Ethernet interface cable (RJ45).

Serial Port Interface Wiring

Details the serial port interface, pin functions, and connection types.

Appendix: Dimensions

External Printer Dimensions

Provides the physical dimensions of the external GK series printer in inches.

Label Dispenser Dimensions

Provides the physical dimensions of the label dispenser accessory.

Appendix: ZPL Configuration

Managing ZPL Printer Configuration

How to manage, save, and restore ZPL printer settings and parameters.

ZPL Configuration Cross-reference

Cross-reference between configuration label items and their corresponding ZPL commands.

Printer Memory Management

Managing printer memory, objects, and obtaining status reports using ZPL commands.

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