Why Your DTF Prints Have Lines
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Why Some DTF Transfers Come Out With Lines (And How We Prevent It)
What Customers Should Know About DTF Print Quality
Published: August 2026
You ordered DTF transfers. They arrived. You pressed one onto a shirt. You noticed faint horizontal lines running through the design.
Or maybe you're shopping around and reading reviews of DTF suppliers where customers complain about "banding" or "streaks" in their prints.
Either way, you're wondering the same thing: what causes this, and how do you avoid ordering from a shop that has this problem?
Here's what's actually happening—and what to look for when choosing a DTF supplier.
Quick Version: Lines in DTF prints are called "banding." They're a quality control issue caused by worn printer parts, poor maintenance, or corners cut on production. Reputable shops catch these before shipping. Cheap shops don't.
What Banding Actually Looks Like
Banding shows up as faint horizontal lines running across your DTF transfer. Usually visible in:
Solid color fills (looks like the color has stripes)
Gradients (uneven transitions)
Large open areas (visible streaking)
Consistent spacing across the print
Sometimes it's obvious. Sometimes it only shows up after the transfer is pressed onto fabric and you see it in certain lighting.
Either way—it's a defect. It shouldn't be in your finished product.
Why Banding Happens
Without getting too technical, banding comes from inconsistent ink delivery during printing. There are several causes—but they all trace back to one root issue: the printer isn't being maintained properly.
Common causes:
1. Worn Dampers
Dampers are small parts inside DTF printers that regulate ink flow. When they wear out (typically every 6-12 months of heavy use), they can't maintain consistent pressure. Result: bands.
These parts cost $30 to replace. A reputable shop replaces them on schedule. A shop cutting corners waits until customers complain.
2. Clogged Nozzles
DTF printers have tiny nozzles that spray ink. If they get clogged (from dried ink or debris), they don't spray evenly. Result: bands.
Proper daily maintenance keeps nozzles clean. Skipped maintenance produces banding.
3. Low Ink Levels
When ink levels drop too low, the printer can't maintain pressure. Result: bands.
Reputable shops top off ink regularly. Cheap shops run tanks until they're near empty to save money.
4. Wrong Humidity in the Shop
DTF ink is sensitive to humidity. Too dry (under 40%) and it dries in the nozzles between passes. Too humid and it doesn't cure properly. Result: bands or other defects.
Real shops climate-control their production areas. Garage operations often don't.
5. Speed vs. Quality Settings
DTF printers can run in "fast mode" (fewer passes) or "quality mode" (more passes). Fast mode is cheaper and quicker—but leaves visible gaps between passes. That looks like banding.
Some shops choose fast mode to maximize volume. You get the lower quality.
How to Spot a Shop That Doesn't Prevent Banding
Some warning signs when you're shopping DTF suppliers:
Complaints in reviews about "lines" or "streaks" or "banding." Multiple complaints = pattern, not accident.
Extremely low prices with no mention of quality control. Someone's cutting corners to hit that price.
No response to quality complaints. Look at their responses to negative reviews. Do they acknowledge and fix, or ignore?
"Overseas quality" without transparency. Some overseas operations use older equipment with worn parts because replacement is expensive to import.
No sample offering. Reputable shops will send a sample so you can inspect quality before committing to bulk orders.
How We Prevent Banding at Transfers42
Here's what happens in our shop specifically to prevent banding on your order:
Daily nozzle checks. Before we print anything, we run a nozzle test. If any nozzles are clogged, they get cleaned before your job starts.
Scheduled damper replacement. We replace dampers on schedule (before they fail), not after they cause visible issues on customer orders.
Climate-controlled shop. We maintain proper humidity year-round. Arizona summers don't ruin our prints because our shop is climate-controlled.
Quality mode printing. We use higher-pass settings that produce clean, banding-free output. Not the fastest possible mode—the quality mode.
Full ink tanks. We don't run our tanks near empty to save money. Ink stays topped off.
Visual quality check on every order. Real human eyes look at each printed gang sheet before it ships. Banding gets caught here, not by you.
The Bottom Line: Preventing banding costs money—better parts, more maintenance time, higher-quality printing settings, and quality control staff. Our pricing reflects that we do this right. Cheaper shops don't. That's the actual difference.
What If You Already Received Banded Transfers From Someone Else?
If you already ordered from another supplier and got banded transfers:
Contact them first. Reputable shops will reprint at no charge. If they refuse, that tells you what kind of shop they are.
Document the issue. Take clear photos. Include multiple angles. Show the banding clearly.
Don't press them onto expensive garments. If you can see banding on the film, you'll see it on the finished shirt too. Save the good garments for good transfers.
And when you're ready to find a supplier that gets it right the first time, we're here.
Common Questions
"Do I need to worry about banding on every DTF order?"
Not with a quality shop. Banding shouldn't be a normal issue—it's a symptom of poor maintenance or cheap production. Choose your supplier carefully and it becomes a non-issue.
"Can I check for banding before pressing?"
Yes. Hold the transfer up to bright light and look at solid color areas. Banding will show as faint horizontal lines. If you see it on the film, it'll show on the shirt.
"Does banding affect transfer adhesion?"
Not usually. Banding is a print quality issue, not an adhesion issue. Banded transfers stick fine—they just look bad.
"What if I order and see banding on my Transfers42 order?"
Contact us immediately. We'll reprint at no charge. But our quality control usually catches these before they ship, so you shouldn't see them in the first place.
Ready to Order Quality DTF Transfers?
Questions about our quality control process or your specific order? Email us at sales@little6llc.com or call (520) 705-4026. Real answers from real people.
Want the deep technical breakdown on DTF banding causes and print shop troubleshooting? Read the full guide on little6llc.com →
Transfers42 — Custom DTF Transfers and Stickers, Printed in Maricopa, Arizona. Powered by LitTLE 6 Industries. Service-Disabled Veteran-Owned.