User Manual
Table Of Contents
- Terms of Use
- Publication Date
- About
- Contents
- Introduction
- Printer Features
- Printer Features
- Inside the ZD620 Dual Capacity Ribbon Roll Printer
- Inside the ZD620 and ZD420 Direct Thermal Printers
- Inside the ZD420 Ribbon Cartridge Printer
- Label Dispenser Option (field installable) - All Models
- Cutter Option (field installable) - All Models
- Linerless Media Tear-Off Option (Direct Thermal Models Only)
- Linerless Cutter Option (Direct Thermal Models Only)
- Identifying Platen Drive Rollers Types
- Printer Power Supply Options
- ZD620 Locking Printer Features
- Zebra Print Touch
- Printer Features
- Install Hardware Options
- Field Installable printer Accessories and Options
- Printer Connectivity Modules
- Media Handling Options
- Removing the Standard Bezel
- Installing the Label Dispenser
- Installing the Standard Media Cutter
- Installing the Linerless Media Cutter
- Installing the Linerless Media ‘Tear-Off’ Bezel
- Media Roll Core Size Adapters
- Print Resolution Upgrade Kits
- Installing the Attached Power Supply Base Options
- Installing the Attached Battery Base Options
- Installing the Battery into the Attached Power Base
- User Interface
- LCD User Interface
- Meaning of the Indicator Light Patterns
- Display Controls and Menus
- Battery Indicators and Controls
- Printer Configuration Menus
- Setup
- Printer Setup Overview
- Select a Location for the Printer
- Install Printer Options and Connectivity Modules
- Attaching Power
- Getting Ready to Print
- Loading Roll Media
- Loading Thermal Transfer Roll Ribbon
- Loading the ZD420 Ribbon Cartridge
- Run a SmartCal Media Calibration
- Test Printing with the Configuration Report
- Detecting a Media Out Condition
- Detecting a Ribbon Out Condition
- Connecting your Printer to a Computer
- Wi-Fi and Bluetooth Classic Wireless Connectivity Option
- Setup for Windows® OS
- Print Operations
- Thermal Printing
- Select a Print Mode
- Adjusting the Print Quality
- Darkness Control
- Adjusting the Print Width
- Printing on Fan-Fold Media
- Printing with Externally Mounted Roll Media
- Using the Label Dispenser Option
- Using the Linerless Options
- Sending Files to the Printer
- Ribbon Cartridge Programming Commands
- Printing with the Attached Battery Base and Battery Option
- Printer Fonts
- EPL Line Mode - Direct Thermal Printers only
- ZD620 and ZD420 Locking Printer Option
- Zebra® ZKDU — Printer Accessory
- ZBI 2.0™ — Zebra Basic Interpreter
- Setting the Power Failure Recovery Mode Jumper
- USB Host Port and Link-OS Usage Examples
- USB Host
- USB Host and Printer Usage Examples
- Items Required for the USB Host Exercises
- Files for Completing the Exercises
- Exercise 1: Copy Files to a USB Flash Drive and Perform USB Mirror
- Exercise 2: Print a Label Format from a USB Flash Drive
- Exercise 3: Copy Files to/from a USB Flash Drive
- Exercise 4: Enter Data for a Stored File with a USB Keyboard and Print a Label
- Using the USB Hosts Port and the NFC Capabilities
- Maintenance
- Troubleshooting
- Tools
- Printer Diagnostics
- Power-On Self Test
- SmartCal Media Calibration
- Configuration Report (CANCEL Self Test)
- Printer Network (and Bluetooth) Configuration Report
- Print Quality Report (FEED self test)
- Reset Printer Factory Defaults (PAUSE + FEED Self Test)
- Reset Network Factory Defaults (PAUSE + CANCEL Self Test)
- Reset Button
- Communication Diagnostics Test
- Sensor Profile
- Advanced Mode
- Factory Test Modes
- Universal Serial Bus (USB) Interface
- Serial Port Interface
- ZD620 / ZD420 Thermal Transfer Models
- ZD620 / ZD420 Ribbon Cartridge Thermal Transfer Models
- ZD620 / ZD420 Direct Thermal Models
- Printer Diagnostics
- Media
- ZPL Configuration
Print Operations
176
Darkness Control
The Darkness Control switch allows the operator to modify the darkness setting for minor variations in
media and printers avoiding the need to change the program or driver settings sent to the printer.
The control switch has three (3) settings:
• Left (Low - Default): no effect .
• Middle (Medium): increases ZPL darkness 3 levels.
• Right (High): increases ZPL darkness 6 levels.
The Low (default) setting makes no change to the actual Darkness setting as set by programming or driver
setting. The Medium setting increases the Darkness level by 3, i.e. if the printer is set to the default
darkness level of 20, then the actual darkness applied while printing will be 23. The High setting will add
six (6) darkness levels to the set darkness level.
Important • Setting the Darkness too high or too low may reduce barcode readability.
Darkness Control