Brother PJ-773

Brother PJ-773 Portable Mobile Printer User Manual

Model: PJ-773

Brand: Brother

1. Introduction and Overview

The Brother PJ-773 mobile printer offers a robust and durable field printing solution for various sectors, including retail, emergency services, logistics, delivery, and maintenance. Measuring less than 26 cm long and weighing 480 g, the PJ-773 easily fits into a briefcase or laptop bag. It can be mounted in a vehicle or other workplaces. The PJ-700 series prints in A4 format, making it ideal for detailed documents such as invoices, service reports, and delivery notes. USB connectivity allows easy connection to your computer or smartphone, and Wi-Fi provides complete mobility. A full range of accessories is also available, making it a customized A4 printing solution. The PJ-773 is a thermal mobile printer with Wi-Fi, enabling fast and portable use.

Brother PJ-773 portable mobile printer, top view

Image 1.1: The Brother PJ-773 portable mobile printer, showcasing its compact design.

Video 1.1: This video demonstrates the versatility of the Brother PJ-773 mobile printer across various professional settings. It shows its use by emergency services personnel printing reports in an ambulance, sales representatives printing invoices on the go, delivery drivers generating receipts, maintenance technicians providing service reports, healthcare professionals documenting patient information, and tattoo artists printing stencils. The video highlights the printer's portability, ease of use, and reliable thermal printing technology for on-the-spot document generation.

2. What's in the Box

Upon unpacking your Brother PJ-773 printer, please ensure all the following items are present:

  • USB Cable
  • Quick Start Guide
  • Print Head Cleaning Sheets

Note: The power adapter and battery are sold separately.

3. Key Features

The Brother PJ-773 is designed with efficiency and portability in mind, offering several key features:

  • Direct Thermal Technology: Eliminates the need for ink cartridges, reducing maintenance and risk of leaks.
  • Resolution up to 300 dpi: Provides clear and crisp monochrome prints for documents and images.
  • Interface: USB and Wi-Fi connectivity for flexible printing options.
  • Compact Dimensions: 255 x 55 x 30 mm, making it highly portable.
  • Lightweight: Weighs only 480 g for easy transport.
  • A4 Format Printing: Capable of printing full-size A4 documents.

4. Setup Guide

4.1. Powering On Your Printer

  1. Install Battery (Optional): If using the optional battery, ensure it is correctly inserted and charged.
  2. Connect Power Adapter (Optional): If not using a battery, connect the optional AC adapter to the printer and a power outlet.
  3. Turn On: Press and hold the Power button until the Power LED illuminates.

4.2. Loading Paper

The PJ-773 uses A4 thermal paper. Ensure you use Brother-approved thermal paper for optimal print quality.

  1. Open the paper cover.
  2. Insert the thermal paper with the print side facing up.
  3. Align the paper guides to the width of the paper.
  4. Close the paper cover securely.

4.3. Connecting to Your Device

The PJ-773 offers both USB and Wi-Fi connectivity.

USB Connection:

  1. Connect the provided USB cable to the printer and your computer or smartphone.
  2. Install the necessary drivers if prompted (available on the Brother support website).

Wi-Fi Connection:

Refer to the Quick Start Guide for detailed instructions on connecting to a Wi-Fi network or using Wi-Fi Direct/AirPrint.

  1. Ensure the Wi-Fi LED on the printer is blinking or solid.
  2. On your device, search for available Wi-Fi networks and select your printer's SSID (e.g., "Brother PJ-773_XXXX").
  3. Enter the password if required.
  4. For AirPrint, ensure your Apple device is on the same Wi-Fi network as the printer.

5. Operating Instructions

5.1. Printing a Document

  1. Ensure the printer is powered on and connected to your device (USB or Wi-Fi).
  2. Open the document or image you wish to print on your computer or smartphone.
  3. Select the print option from your application.
  4. Choose "Brother PJ-773" as your printer.
  5. Adjust print settings (e.g., paper size, orientation, number of copies) as needed.
  6. Click "Print".
Brother PJ-773 printer in use by emergency services personnel in an ambulance

Image 5.1: The PJ-773 printer being used in an ambulance to print a report.

Brother PJ-773 printer in use by a field technician printing a maintenance report

Image 5.2: A field technician printing a maintenance report using the PJ-773.

6. Maintenance

Regular maintenance ensures optimal performance and longevity of your Brother PJ-773 printer.

6.1. Cleaning the Print Head

If print quality degrades (e.g., faded lines, blank areas), the print head may need cleaning.

  1. Ensure the printer is off.
  2. Open the paper cover.
  3. Gently wipe the print head with one of the provided cleaning sheets.
  4. Close the paper cover.
  5. Run a test print to verify print quality.

6.2. Paper Handling and Storage

  • Store thermal paper in a cool, dry place away from direct sunlight and heat.
  • Avoid touching the print surface of the thermal paper with bare hands.
  • Do not use wrinkled or damaged paper, as this can cause paper jams or poor print quality.

7. Troubleshooting

This section addresses common issues you might encounter with your PJ-773 printer.

7.1. No Power

  • Check if the battery is charged or if the AC adapter is properly connected to both the printer and a working power outlet.
  • Ensure the Power button was pressed and held sufficiently.

7.2. Paper Jams

  • Turn off the printer.
  • Open the paper cover and carefully remove any jammed paper.
  • Ensure the paper is loaded correctly and the paper guides are aligned.

7.3. Poor Print Quality

  • Clean the print head as described in the Maintenance section.
  • Ensure you are using high-quality thermal paper.
  • Check the print density settings in your printer driver.

7.4. Connectivity Issues (Wi-Fi/USB)

  • For Wi-Fi, ensure the printer is within range of the Wi-Fi network and connected. Restart both the printer and your device.
  • For USB, ensure the cable is securely connected and the correct drivers are installed on your computer. Try a different USB port or cable.

8. Specifications

FeatureSpecification
BrandBrother
Model NameBROTHER IMP THERMIQUE A4 PJ-773
Model NumberPJ-773
Connectivity TechnologyUSB, Wi-Fi
Printing TechnologyDirect Thermal
Special FeaturePortable
Printer OutputMonochrome (Direct Thermal)
Max Print Speed (Monochrome)8 Pages per minute
Max Media SizeA4 / Legal
Compatible DevicesComputer, Smartphone
Dimensions (L x W x H)255 x 55 x 30 mm
Weight480 g
Max Print Resolution300 x 300 DPI
Duplex PrintingNo (Simplex)
Output Sheet Capacity10 sheets

9. Warranty and Support

9.1. Manufacturer's Warranty

The Brother PJ-773 Portable Mobile Printer comes with a 2-year manufacturer's warranty. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.

9.2. Customer Support

For technical assistance, troubleshooting beyond this manual, or warranty service, please contact Brother customer support. You can find contact information and additional resources on the official Brother website.

  • Visit the official Brother support website for drivers, FAQs, and contact details.
  • Have your printer's model number (PJ-773) and serial number ready when contacting support.

© 2026 Brother International Corporation. All rights reserved.

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