How To Tackle Common Sublimation Issues

Coastal Business Supplies discusses 7 common sublimation issues, such as lack of vibrancy, image ghosting, blurry transfers, faded images, etc. and how to fix them.

Why aren’t my transfers coming out vibrant?

There are a few reasons for this. First, make sure that you are printing on the correct side of your sublimation paper, which is typically bright white. The other side is generally off-white. If you’re printing with a Sawgrass Virtuoso SG400 or SG800, the bright white side will load face-down in the tray. Next, ensure that you are printing through the correct colour correction programme. For instance, if you’re printing on a Sawgrass sublimation printer, we recommend printing with Virtuoso Print Manager.

Why is my image ghosting?

If you are seeing a second version of your transfer, like a shadow, slightly to the side of your image, you are experiencing what is known as ghosting. Ghosting occurs when the sublimation transfer paper shifts during the sublimation process, such as when you open or close your heat press. For this reason, it is recommended that you tape down your hard substrates to the sublimation paper using thermal tape. For fabrics, we recommend an adhesive spray to prevent the paper from moving. After pressing, make sure you remove the transfer paper immediately. For sublimation, we also suggest avoiding using an auto open press as these tend to pop open too fast, causing the paper to shift if not taped down well enough.

Why is my substrate not accepting sublimation ink?

It is important to note that not all products accept sublimation ink. For dye-sublimation to work, your product blank needs to have a polyester coating (or be made of a polyester material). For fabrics, we recommend 100% white polyester for the best transfer. It is not possible to sublimate on 100% cotton – and your transfer will wash away in the first wash cycle. You can sublimate on poly/cotton blends, but the transfer will appear less vibrant and give a vintage look. In general, the higher the level of polyester, the better.

Why am I getting ink from a previously transferred image onto a new blank transfer?

Sublimation ink has the tendency to bleed onto the bottom and top platens of your press during heat transfer, which is why it is very important to protect your press with the proper material. To prevent ink from getting onto your top or bottom platen, we recommend using a Teflon wrap for each platen, as well as a Teflon sheet. Teflon is completely reusable, and all it takes is wiping away the excess ink after each press. You may also use silicone-treated sheets that can be discarded after use.

Why am I seeing small dots in my transfer?

This is likely due to excess moisture. We recommend pre-pressing most substrates to ensure you get all moisture out. Then, let the substrate cool down, place your transfer on, and press like normal.

Why are my transfers blurry?

If you notice blurring in your image when you pull the transfer paper off, this may be because your substrate received too much time/temperature in the heat press, and now the image has started to bleed out. If this happens, we recommend reducing your time and attempting again.

Why are my images coming out faded?

Image fading is usually caused by too much time and temperature, and/or pressure. We suggest double-checking the recommended settings from the company where you purchased your sublimation blanks. Every heat press is different, which is something to bear in mind. Another suggestion is to double-check the temperature of the top platen on your press to make sure it aligns with the stated temperature; for this, we recommend heat strips.