Brother users may often wonder why there are small holes at the bottom of the label cartridges. What are they actually for? You might have a vague idea that they help distinguish different label types, but the exact principle is not always clear. Today, let’s take a closer look at why these holes exist and how they really work.
The holes on the bottom of a Brother DK label cartridge are far more than simple design details. They serve three key purposes:
Automatic Label Recognition
Brother QL series printers are equipped with sensors that read the hole patterns on the cartridge. Each unique hole arrangement corresponds to a specific label type, such as a die-cut label or a continuous roll. This allows the printer to instantly recognize whether you are using DK-1201, DK-2225, or another model, without requiring you to manually adjust the settings.
Error Prevention
Without automatic recognition, users might select the wrong paper size in the software, which could lead to text or barcodes being cut off, misaligned, or printed outside the label area. The hole system prevents these problems by ensuring that the printer always matches the label roll correctly.
Inside every Brother QL printer, there are five small sensor switches on the right side of the printer compartment according to an official answer . When you insert a DK label roll with its plastic holder, the holes at the bottom of the cartridge align with these sensors.
- lIf a hole is present, the sensor pin can move freely upward.
- If there is no hole, the solid plastic surface keeps the sensor pressed down.
By checking which sensors are pressed and which are released, the printer can determine exactly which DK roll is installed. If a sensor is damaged or stuck, the printer may fail to recognize the cartridge and display an error.
This simple mechanical system allows the printer to automatically identify label rolls without requiring the user to manually select the size or type.
Because each Brother-style DK label model is keyed to a specific cartridge, you must not swap holders across models. A DK-2225 holder is not the same as a DK-2205 or DK-1201 holder—the hole pattern in the base “tells” the printer which roll it is. Mixing them can cause mis-reads, wrong margins, or error prompts. Use the tips below to keep things tidy and foolproof.
1. Don’t mix models
Always keep the roll with its matching reusable holder.
If you remove an empty core, return the holder to that model’s bin—don’t set it aside “just for now.”
2. Handle and clean the hole area
Hold the cartridge by the sides, not by the bottom plate with the holes.
If adhesive or dust builds up, wipe gently with a lint-free cloth and a little isopropyl alcohol (≥70%). Let it fully dry.
Never cover or scratch the hole area; even a small sticker or glue smear can block the sensor.
3. Store correctly
Use separate bins/bags per model (e.g., “DK-2225,” “DK-2205”).
Keep away from heat and direct sun; avoid heavy weight on top to prevent warping.
Add a small desiccant pack if you’re in a humid environment.
4. Install with care
Follow the arrow/orientation marks; make sure the core seats flush and the roll turns freely.
After loading, close the cover and let the printer auto-detect before printing.
5. Worried about mix-ups? Use the Triple-Label Method
Apply small model stickers to three parts of every Betckey reusable cartridge. This way, even if all holders get piled together, you won’t confuse them:
Base label (near but not over the holes): Put a slim sticker that reads, for example,
DK-2225 | Continuous | 62 mm. Place it beside the hole window so it’s visible when you pick it up.
Top cover label (big, visible): A larger sticker on the top face for quick ID on the shelf (same text as above).
Core/spindle ring label: A narrow wraparound sticker on the inner core or spindle post so the model stays identifiable even when the holder is upside-down.
Pro tips:
Add a color code by width (e.g., 29 mm=Blue, 62 mm=Green) to the three stickers.
Include “Continuous” or “Die-cut” on every sticker.
If you like digital tracking, print a tiny QR code on the top label that links to your sheet of compatible sizes/templates.
6. If holders are already mixed
Use a quick identify-and-sort routine: insert a holder (empty is fine), close the lid, and note what the printer detects; then label it immediately.
Keep a one-page hole-pattern cheat sheet in the drawer for visual comparison while you sort.
7. Inspect and retire when needed
Check hinges and latches; if the base is cracked—especially around the hole window—retire the holder.
Keep 1–2 spare Betckey holders per high-usage model to avoid downtime.
At Betckey’s office, we wrap the cartridges with a rubber band to ensure they stay secure and don’t get mixed up with other models.
The holes at the bottom of Brother DK label cartridges are the “ID system” that tells the printer exactly which label you are using. With Betckey reusable cartridges, keeping each holder matched to the right model is essential. A little care in organization—like clear labeling—ensures smooth printing, saves time, and avoids errors.
About Betckey
Betckey Premium Labels is a leading supplier of compatible direct thermal labels, committed to high-quality and eco-friendly products as well as competitive pricing. We offer better products than manufactured original at 70% less price. Now, our Amazon store ranks first in the US, Canada, and Western Europe with thousands of positive ratings. Visit betckey.com and get special discount when purchasing! Sign up now and we'll send you a special discount towards your purchase. By the way, welcome to follow our official @ Tik Tok and @ Youtube accounts to get Betckey’s latest news!
