Why is my black sublimation turning green

Sublimation printing is a popular method for transferring designs and images onto various materials. Unfortunately, users often encounter a vexing issue when their black sublimation prints turn green. This discoloration can be quite disheartening and take away from the quality of the print. Various factors can cause black sublimation to turn green, including the use of incompatible substrates, improper heating or pressure during the sublimation process, and the use of expired or low-quality ink or transfer paper. This outline will explore the causes and solutions of this problem to help you understand “why is my black sublimation turning green”.

Why is my black sublimation turning green?

Sublimation dye turning green is usually due to incompatible substrate material, inadequate heating or pressure during the sublimation process, use of outdated or low-grade ink or transfer paper, presence of metallic inclusions in the substrate material, and incomplete transfer of ink. All these issues can be avoided by using high-quality materials with correct settings for temperature and timing throughout the printing process. To guarantee the process is successful, it’s essential to conduct tests with assorted inks, papers, and substrates. Meanwhile, calibrate your equipment appropriately and verify that only premium-grade materials are used.

Why is my black sublimation turning green

Causes of why is my black sublimation turning green:

Incompatible substrate material:

Sublimation printing can lead to the discoloration of ink when unsuitable materials are used as the substrate. Avoid using incompatible materials to prevent this issue and ensure optimal results with your sublimation prints.

Improper heating:

Inferior heat levels and pressure applied during the sublimation process can render inadequate ink transfer to the substrate, resulting in discoloration. Ensure your press is properly calibrated and set at an appropriate pressure level for optimal results.

Presence of iron or other metallic elements in the substrate:

Suppose your substrate is made of metal or a metallic alloy. In that case, there may be an elevated presence of iron and other metals that could cause adverse reactions with the ink resulting in discoloration. To avoid this issue, it is important to consider the type of materials used for printing and those composing the substrate.

Use of expired or low-quality ink or paper:

Utilizing outdated or inferior ink and transfer paper may lead to poor ink adhesion onto the substrate, thereby causing an unattractive discoloration. Be sure to use fresh, high-quality ink and transfer paper for the best results.

Metallic impurities in the substrate:

The presence of metallic impurities in the substrate can cause your black sublimation prints to turn green upon exposure to heat. To prevent this issue, ensure that your materials are free from metallic contaminants before sublimation.

Incomplete transfer of ink:

If the inks are not transferred onto the substrate properly during sublimation, it can cause discoloration. This is due to some parts receiving more heat than others and thus altering the vibrancy of the colors. Use consistent pressure across your substrate for even ink transfer to remedy this problem.

Why is my black sublimation turning green

Prevention and Solutions for Black Sublimation turning green:

There are a few steps you can take to avoid discoloration of your sublimation prints:

Use Recommended Substrate Material:

Using the correct substrate material is key to avoiding discoloration and achieving successful outcomes with sublimation printing. Before beginning, it’s essential to double-check that the substrate selected is compatible with your specific type of ink and process being used. Polyester or poly-coated items are typically highly suitable for this method, whereas natural fibers or uncoated metals may not provide ideal results.

Properly Calibrate and Maintain Heating Equipment:

Accurately calibrating and preserving your heat press machine is essential to guaranteeing the ink transfers completely onto the material. This can be accomplished by adjusting temperature and pressure, as indicated in the manufacturer’s manual. Additionally, regular maintenance assessments should be conducted consistently to guarantee that your device is functioning properly.

Use High-Quality Ink and Transfer Paper:

Sublimation printing requires ink and transfer paper of the highest quality to guarantee that the colors are transferred without fading or discoloration. Avoiding expired or low-grade products are paramount, using only those specifically designed for sublimation. This will keep your prints in perfect condition.

Clean and Prepare Substrate before Printing:

Before proceeding with the printing process, it is important to effectively clean and prepare the substrate to avoid any discoloration caused by metallic impurities or other contaminants. To achieve this, simply wipe down the surface of the substrate using a clean cloth and make sure that there are no traces of dust particles or debris left behind before beginning your print.

Why is my black sublimation turning green

Ensure Complete Ink Transfer Using Heat Press:

Using a heat press to apply the transfer paper can help ensure a complete transfer of the ink onto the substrate, reducing the risk of discoloration. This includes using the correct pressure and holding the heat press in place for the recommended time to ensure the ink is fully transferred.

Use this prevention and solutions to minimize the chance of discoloration in sublimated black fabrics. You may try various approaches and fine-tune your process to find the most effective approach. With a little experimentation, you can unlock optimal outcomes.


Is it possible to fix green discoloration in black sublimation?

It is difficult to fix green discoloration in black sublimation once it has occurred. The best way is to prevent it from happening in the first place by following the proper techniques, equipment, and materials. If metallic impurities cause discoloration in the substrate, it may be possible to remove them by cleaning or sanding the surface of the substrate.

Can I use expired or low-quality ink or transfer paper?

It’s highly recommended not to use expired or low-grade ink and transfer paper, as it can lead to discoloration of the print and damage its quality. It’s important to use ink and transfer paper specifically designed for sublimation printing and avoid expired or low-quality products.

Why is my black sublimation turning green


Many things can make black sublimation turn green, like using the wrong kind of substrate material, not enough heat or pressure during the process, using low-quality ink or transfer paper that’s past its expiration date, metal particles on the surface of the substrate, and not transferring all the ink. To avoid problems, it’s important to use the right substrate material and calibrate your heating tools carefully. It’s also a good idea to use high-quality ink and transfer paper. Before printing, clean and prepare the substrate surface well; make sure to transfer all the ink with a heat press.

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