# Toner OWA Armor TN-421BK 3000 pages black

**URL:** https://aio.lv/en/product--armor-k18057ow--4059163
**Data updated:** 2026-01-13 21:17 (EET)
**Category:** Laser Printer Toners
**Manufacturer:** ARMOR
**Manufacturer code:** K18057OW
**EAN:** 3112539756604
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 44.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 37.18 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--armor-k18057ow--4059163

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 01.07.2026 | free |
| Pickup points | 06.07.2026 | 1.99 EUR |
| Courier delivery to door | 06.07.2026 | 4.99 EUR |

## Summary description

The OWA Armor TN-421BK toner is designed for Brother printers, offering a high yield of 3000 pages in black. It ensures sharp text and vibrant images, making it ideal for both home and office use. This compatible toner is easy to install and provides consistent quality, reducing the need for frequent replacements. Enjoy reliable performance and cost-effective printing with this high-capacity toner cartridge.

## Long description

The OWA Armor TN-421BK 3000 pages black toner is a high-yield replacement cartridge compatible with Brother printers. Designed to deliver up to 3000 pages of black text and images, this toner provides consistent print density across documents and reliable performance for everyday printing tasks. The cartridge is supplied as a single unit and fits into supported Brother models to produce sharp text and solid monochrome graphics for both home and office environments.
Advantages
This compatible toner offers a balance of capacity and print quality, reducing the frequency of cartridge changes while maintaining stable black density. Installation is straightforward, and the cartridge is engineered to deliver consistent results over the stated page yield. Using a compatible high-capacity cartridge can lower per-page printing costs and support uninterrupted workflows with predictable output quality.
Suitable for
 Everyday black-and-white document printing in home offices
 Office reports, invoices and internal documentation
 Monochrome marketing materials and draft proofs
 High-volume printing where reduced cartridge changes are desired
Key specifications
 Printing colour: Black
 Estimated yield: up to 3000 pages (standard coverage)
 Quantity per pack: 1 cartridge
 Compatibility: designed for use in compatible Brother laser printers
How to use
Before installing the OWA Armor TN-421BK toner, turn off the printer and follow the manufacturer’s instructions for cartridge replacement applicable to your Brother model. Remove protective seals or packaging materials from the cartridge, insert it into the designated toner bay until it clicks into place, and close the printer cover. After powering the printer back on, print a test page to verify correct installation and alignment. Dispose of the used cartridge according to local regulations or recycling programs.
Usage recommendations
For consistent print quality, store the cartridge in a cool, dry place until use and avoid exposure to direct sunlight or extreme temperatures. Use standard printer settings for monochrome text for best results; adjust density or toner-saving options in the printer driver if longer yields are preferred. If print quality issues arise, perform the printer’s cleaning and calibration routines before replacing the cartridge.

## Specifications

### Features

| Feature | Value |
|---|---|
| Type | Compatible |
| Printing colours | Black |
| Brand compatibility | Brother |
| Quantity per pack | 1 pc(s) |
| Black toner page yield | 3000 pages |
| Black toner cartridges quantity | 1 |
| Compatibility | TN-421BK |

## FAQ

### How much does the Toner OWA Armor TN-421BK K18057OW cost, and is it available for purchase?

The price is 44.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 01.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All ARMOR products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized ARMOR service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: brand compatibility, quantity per pack, printing colours, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/4059163/62471863_large.webp