ZD421d: direct thermal
The ZD421d prints on heat-sensitive media without a ribbon. It suits labels with controlled life and exposure requirements.
ZD421t: thermal transfer
The ZD421t uses a ribbon to transfer the image, supporting a wider choice of media and improved durability for many applications.
Decide using the actual label
Size, material, required life, heat, abrasion and throughput should be assessed before selecting the variant and resolution.
Points to validate
- ZD421d for straightforward direct-thermal workflows
- ZD421t for broader media choice and durability
- Validate media, resolution and required interfaces
Frequently asked questions
Does the ZD421d use a ribbon?
No. The direct-thermal variant prints on compatible heat-sensitive labels.
Can both variants be included in a quote request?
Yes. Describe the labels and workflow so suitable ZD421d and ZD421t configurations can be compared.
