PREPARE THE INK
The discharge base is mixed with the required pigment and activator shortly before production. Once activated, the ink has a limited working life.
Most dark T-shirts are dyed after the cotton fabric is made. Discharge ink uses a controlled chemical reaction to deactivate that dye only where the artwork is printed. The original cotton colour is revealed, or a new pigment is added at the same time. After curing and washing, the result has a much softer feel than a conventional opaque print.
The basic principle
REMOVE THE DYE.
KEEP THE DETAIL.
A discharge base contains an activator that reacts with compatible garment dye when heat is applied. During curing, the dark dye breaks down in the printed area.
For a natural, vintage-looking result, the ink can be used without added colour. For a stronger coloured print, pigments are mixed into the discharge base before printing. The discharge reaction removes the shirt dye while the pigment remains inside the cotton fibres.
This allows us to print large artwork on black garments without creating a heavy, plastic-like layer across the chest or back.
From screen to finished shirt
THE FOUR MAIN STEPS
PRINT THE ARTWORK
Ink is pushed through the open areas of the screen and into the cotton fibres. Accurate registration allows multiple colours to sit cleanly next to each other.
APPLY HEAT
The printed garment passes through a dryer. Heat activates the discharge reaction, removing the original dye and curing the new pigment.
WASH & REVEAL
The print often looks muted immediately after printing. Its final colour and soft texture become clearer after the first wash.
SOFT HAND
The print sits inside the cotton rather than forming a thick surface layer.
BREATHABLE
Excellent for large front and back prints used on tour and festival merchandise.
BUILT TO LAST
Correctly cured discharge prints age together with the garment instead of cracking like a heavy coating.
Why we use it
MADE FOR BIG
BAND ARTWORK
Metal artwork often covers a large part of the garment. A thick opaque layer can feel heavy, especially on a full back print. Discharge ink gives us strong detail and coverage while keeping the garment comfortable.
NO HEAVY UNDERBASE
On compatible black cotton garments, discharge printing can remove the need for a solid white layer beneath every colour. This keeps the finished print lighter and helps preserve fine textures.
NATURAL, SLIGHTLY VINTAGE CHARACTER
Because the process reacts with the garment dye, small variations can occur between shirt colours, dye lots and manufacturers. That natural character is part of what makes discharge prints distinctive.
Choosing the right method
DISCHARGE VS.
STANDARD OPAQUE INK
Our preferred option for compatible cotton garments
DISCHARGE INK
- Very soft, almost no-hand feel after washing
- Breathable on large artwork
- Excellent detail on black cotton
- Natural, slightly vintage appearance
- Best results depend on garment dye compatibility
Useful when discharge is not suitable
OPAQUE WATER-BASED INK
- Works on a wider range of garment colours and blends
- More predictable colour across different dye lots
- May require a white underbase on dark garments
- Slightly more ink remains on the fabric surface
- A strong alternative for polyester-rich garments
Important: Not every black garment is dischargeable. Some reactive
dyes do not release cleanly, while polyester blends can produce inconsistent results.
We test garments and choose the print method according to the fabric, dye and artwork.
The finished result
PRINT YOU CAN
WEAR ON TOUR
Once cured and washed correctly, discharge ink leaves a print that moves with the fabric. It is well suited to merchandise that will be worn repeatedly, packed into vans, sold at festivals and washed again and again.
Common questions
DISCHARGE PRINTING FAQ
Does discharge ink work on every black T-shirt?
No. The result depends on the fibre content and the dye used by the garment manufacturer. Ring-spun cotton garments with compatible reactive dyes usually give the best results. We select or test garments before production.
Why can the colour look different before the first wash?
Fresh discharge ink can retain residue from the reaction and curing process. After washing, the print normally becomes softer and the final colour is easier to see.
Can discharge printing produce bright colours?
Yes, pigments can be added to the discharge base. However, the final colour is also influenced by the garment dye, cotton and curing conditions, so the appearance is usually more organic than a plastic surface print.
Is discharge ink suitable for polyester garments?
It is primarily designed for cotton. Polyester and high-polyester blends do not discharge in the same way, so another water-based ink system may be more appropriate.
Is the print durable?
When printed and cured correctly, discharge prints are highly durable because the colour is integrated into the cotton fibres. The design ages naturally with the shirt.
Printing merch since 2005
READY TO PRINT YOUR NEXT RELEASE?
Send us your artwork, quantities and deadline. We will recommend the right garments, ink system and colour setup for your project.