Label tape Dymo D1 45021 12 mm x 7 m, white on black (compatible)

Label tape Dymo D1 45021 12 mm x 7 m, white on black (compatible) is a thermal transfer label cassette designed for Dymo label printers that accept D1 cartridges. The tape is 12 mm wide and 7 m long, providing white text on a black background for high contrast and legibility. It is suitable as a replacement for the original D1 45021 cartridge and is intended for general office, home and light-industrial labeling tasks.

Advantages

This compatible Dymo D1 tape delivers clear, high-contrast printing with durable adhesive suitable for paper, plastic and many smooth surfaces. The 12 mm width balances text space and compactness, while the 7 m length reduces the need for frequent cassette changes. The tape is formatted to work with label printers that accept D1-style cartridges, allowing straightforward installation and consistent print quality for text, barcodes and simple symbols.

Suitable for

• Labeling files, folders and documents
• Identifying cables, wires and network ports
• Marking shelves, storage boxes and containers
• Home organization such as kitchen, garage and hobby supplies
• Temporary signage and asset marking in offices or workshops

Key specifications

• Tape width: 12 mm
• Tape length: 7 m
• Print color: white
• Background color: black
• Printing technology: thermal transfer (for compatible D1 label printers)
• Adhesive type: general-purpose pressure-sensitive adhesive

How to use

Install the cassette into a compatible Dymo label printer following the printer manufacturer’s cassette insertion procedure. Create or edit your label using the printer’s software or onboard controls, selecting appropriate font size and contrast for a 12 mm tape width. Print test labels to confirm alignment and legibility. Apply printed labels to clean, dry surfaces and press firmly to ensure good adhesion. For best results on textured or dirty surfaces, clean the area before applying the label.

Usage recommendations

Store unopened cassettes in a cool, dry place away from direct sunlight and extreme temperatures. For long-lasting legibility, avoid placing labels in direct sunlight for extended periods and keep them on smooth, clean surfaces. Replace the cassette when print density becomes faint or when the tape length is exhausted.