Увод
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your vretti Bluetooth Thermal Shipping Label Printer, Model 420B. Please read this guide thoroughly to ensure proper use and optimal performance of your device.
Производ је завршенview
The vretti 420B is a compact and efficient thermal label printer designed for various labeling needs. It supports both wired (USB) and wireless (Bluetooth) connectivity, offering flexibility for different operating environments.
Кључне карактеристике:
- Блуетоотх повезивање: Print wirelessly from Android, iPhone, iPad, and Windows devices. (Note: Mac OS devices are not supported via Bluetooth).
- Штампање велике брзине: Capable of printing up to 75 labels per minute (152mm/s) at 203 dpi resolution for clear black and white text and images.
- Versatile Media Support: Compatible with various thermal direct label types including Continuous, Gap, Black Mark, Fan-Fold, and Punched Hole.
- Adjustable Label Sizes: Supports label widths from 25.4mm to 115mm (0.78 to 4.6 inches), accommodating shipping labels, address labels, barcode labels, and more.
- Компатибилност са више платформи: Works with major transportation and e-commerce platforms such as UPS, eBay, Amazon, Shopify, FedEx, DHL, and Uber Eats. Compatible with Windows, Mac OS, and Linux systems via USB.
- Термално штампање без мастила: Utilizes thermal printing technology, eliminating the need for ink cartridges or toner.
- Аутоматско откривање етикета: Features auto label detection and error reprint technology for high-precision printing.
- Built-in Label Bin: Designed with an internal label bin, removing the need for an external label holder.
Сетуп
1. Распакивање и компоненте
Carefully unpack the printer and verify that all components are present:
- vretti 420B Thermal Label Printer
- Адаптер за напајање и кабл за напајање
- УСБ кабл
- Водич за брзи почетак
- Сафети Гуиде
- Sampле Лабелс
- USB Adapter for Mac (if included)

Image: The vretti 420B printer shown with its power adapter, USB cable, and sample labels, illustrating the complete package contents.
2. Физичка веза
- Прикључите адаптер за напајање на прикључак за напајање штампача.
- Укључите кабл за напајање у зидну утичницу.
- For USB connection, connect one end of the USB cable to the printer and the other end to your computer.
- Turn on the printer using the power switch located at the back.

Image: The vretti 420B printer connected to a laptop, demonstrating the USB connection setup.
3. Driver Installation (for USB Printing)
For Windows, Mac OS, or Linux systems, download the appropriate driver from the official vretti webсајт. Пратите упутства на екрану да бисте завршили инсталацију.
- Visit the vretti label printers official webсајту.
- Locate and download the driver for Model 420B compatible with your operating system.
- Покрените инсталатер и пратите упутства.
4. Mobile App Installation (for Bluetooth Printing)
For printing from Android, iPhone, or iPad devices via Bluetooth, install the dedicated mobile application:
- За Андроид: Тражи "4barcode Edit" in the Google Play Store.
- За иПхоне/иПад: Тражи "4barlabel" in the Apple App Store.
- Инсталирајте апликацију на свој уређај.

Image: A smartphone screen showing the "4barcode" app available on Google Play and the App Store, with the vretti printer connected wirelessly.
Упутство за употребу
1. Учитавање налепница
- Отворите поклопац штампача.
- Adjust the movable guides to match the width of your labels.
- Insert the thermal labels into the printer with the printable side facing up. Ensure the labels are fed smoothly and correctly.
- Close the printer cover. The printer will automatically detect and calibrate the label size.

Image: Hands loading fan-fold labels into the vretti 420B printer, highlighting the adjustable guides for different label widths.
2. Printing via USB (Windows/Mac/Linux)
- Ensure the printer is connected to your computer via USB and the driver is installed.
- Отворите документ или слику коју желите да одштампате.
- Select the vretti 420B printer from your printer options.
- Adjust print settings (e.g., label size, orientation, copies) as needed.
- Initiate the print job.
3. Printing via Bluetooth (Android/iPhone/iPad)
- Уверите се да је Блуетоотх омогућен на вашем мобилном уређају.
- Open the "4barcode Edit" (Android) or "4barlabel" (iOS) app.
- Within the app, connect to your vretti 420B printer via Bluetooth.
- Select the type of content you want to print (e.g., PDF, image, custom label).
- Customize your label using the app's editing features (text, icons, images, barcodes, QR codes).
- Adjust print settings (e.g., width/height, copies, print quality, print speed).
- Додирните „Штампај“ да бисте послали задатак штампачу.

Image: The vretti 420B printer in action, producing a shipping label, while a smartphone shows the connected mobile application.
4. Customizing Labels
The mobile application provides extensive customization options:
- Текст: Add and format text with various fonts, sizes, and styles.
- Icons/Images: Insert pre-loaded icons or upload your own images.
- Barcodes/QR Codes: Генеришите и штампајте стандардне баркодове и QR кодове.
- Шаблони: Utilize pre-designed templates for common label types (e.g., address labels, product labels, thank you stickers).

Image: A display of diverse labels printed by the vretti 420B, showcasing its versatility for different shapes and purposes.
Одржавање
Редовно одржавање осигурава дуготрајност и оптималне перформансе вашег штампача.
- Чишћење главе штампача: Use an alcohol wipe to gently clean the print head if print quality degrades or lines appear. Ensure the printer is off and cooled down before cleaning.
- Чишћење ваљка за штампање: Regularly clean the rubber roller to prevent dust and adhesive residue buildup, which can affect feeding.
- Складиштење: Штампач чувајте на чистом и сувом месту, даље од директне сунчеве светлости и екстремних температура.
- Квалитет етикете: Use high-quality thermal labels to prevent damage to the print head and ensure clear prints.
Решавање проблема
Ево решења за уобичајене проблеме на које можете наићи:
| Проблем | Могући узрок | Решење |
|---|---|---|
| Blank Labels | Labels loaded incorrectly (printable side down). | Ensure thermal labels are placed with the printed side facing up. |
| Poor Print Quality (faint/unscannable) | Low print density, dirty print head, or low-quality labels. | Increase print density in settings. Clean the print head with an alcohol wipe. Use recommended thermal labels. |
| Штампач не реагује | Loose cable connection, incorrect driver, or Bluetooth not paired. | Check all cable connections. Reinstall printer driver. Ensure Bluetooth is correctly paired in the app. |
| Labels Not Feeding Correctly | Incorrect label size setting, misaligned guides, or label jam. | Verify label size settings in the app/driver. Adjust label guides. Clear any jammed labels. |
Спецификације
- Модел: 420Б
- Бренд: вретти
- Технологија штампе: Тхермал
- Повезивање: Блуетоотх, УСБ
- Резолуција штампања: 203 dpi (black and white)
- Максимална брзина штампања (монохроматски): 72 labels/minute (152mm/s)
- Максимална величина медија: 4 к 6 инча
- Supported Label Width: 25.4 мм - 115 мм (0.78 - 4.6 инча)
- Димензије производа: 21 к 17 к 15 цм; 2.09 кг
- Посебне карактеристике: High Speed Printing, Adjustable Width, Versatile Media Support, Multi-Platform Compatibility, Automatic Label Detection.
Гаранција и подршка
For warranty information or technical assistance, please refer to the contact details provided in your Quick Start Guide or visit the official vretti website. Ensure you have your product model number (420B) and purchase details ready when contacting support.
Контакт информације:
- Емаил: support@vretti.com
- Webсајт: www.vretti.com





