If you're reading this, then you already know that sublimation is an amazing technique that allows you to personalize your prints. However, poor sublimation transfer results sometimes occur. Sometimes we encounter banding, moisture issues, and even ghosting and outgassing.
If you've encountered any of these issues, we can help you solve them!
The previous article has introduced you to 2 common problems, so let us continue to look at the remaining common problems and solutions.

3.Output colors are incorrect
Output color is correct, it’s the input color that’s wrong.
The problem of color mis-match is not usually the result of a defective system, rather it comes from the fact that there are multiple pieces of image rendering equipment involved in the process, each having different methods and ranges of color management.
First and foremost, the computer monitor is displaying in RGB mode while the printer is printing in CMYK mode. And with sublimation, what comes out of the printer is not the final color as it will shift again during the pressing. It’s kind of like translating French to English to Spanish, you can get the general message across, but rarely is there a direct word-to-word match-up.
It should be noted that a computer screen makes its own interpretation of color, thus what is displayed is probably not the correct color, so spending a lot of time trying to match the output of the printer to what is displayed on the monitor is probably a waste of time. It’s far more accurate to generate proofs for the customer to review and making sure that the correct color management settings are being applied to ensure color accuracy for the final product.

4.Ghosting & Gassing Out
Sublimation requires a tight marriage between the transfer paper and the blank product during pressing. If the paper shifts or is not firmly planted against the substrate, then the result will be ghosting and/or gassing out.
Ghosting is when you end up with a blurry image, typically characterized by a shadow effect along or outside of the edges. Gassing Out is when you end up with a “burst” of ink outside of the image area.
The key here is a tight fit between the transfer paper and the substrate. It’s a good practice to use heat resistant tape to secure the transfer to the product. Use care not to tape across the image area as this can often damage the image quality. In addition, use only a minimal amount of tape, as you will need to be able to easily and quickly remove the transfer after pressing.
When sublimating apparel, you can use “repositionable” spray adhesive instead of tape. Apply a very light mist on the image side of the transfer paper from about 12-18" away. Do not spray the shirt. Then press the transfer paper to the product. If you position it incorrectly, you can lift it off and reposition it.
Regardless of how you adhere the transfer paper to the product, it’s important that when you remove it, it doesn’t slide along the surface of the substrate, as this may spread sublimation dye into unwanted areas, and cause ghosting. Ideally, with hard substrates, the transfer will be lifted off the surface, quickly and cleanly. With apparel, it may work better to grab one end of the paper and pull it away slowly, while firmly holding the garment down.

If your teflon blowout sheet becomes stained or dirty, it can also cause ghosting. You may want to consider using newsprint or butcher paper instead of teflon. Be sure to use a fresh sheet on every pressing cycle.

5.Transfer lines on clothing
Transfer lines are where you end up with a faint line in the fabric that corresponds to where the edges of the transfer sheet were located during pressing. They are caused by the shirt fibers melting along the edges of the transfer sheet. 
Your first option for preventing transfer lines on apparel is to experiment with your heat press settings. Consider dropping the temperature and reducing the pressure to a very light setting. You might also cut back the pressing time from 60 seconds to about 35 seconds. Changes should be made gradually, as too much variance from the standard settings could affect image quality.
Many Sublimators use a process that utilizes a sheet of high temperature foam during production to prevent lines from forming. 
Teflon pillows are another tool that has been developed for apparel sublimation. Check with your equipment suppliers for more information.
One important thing to remember with apparel, is that different garments may need different settings. Regardless of which approach you use, be sure to document your settings for future reference.

These are some of the most common issues encountered by Sublimators, and each of them is relatively easy to resolve. If you are still having trouble, then make sure you contact your equipment supplier to discuss. Don’t let production challenges slow you down or intimidate you. 

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