About some heat-sublimation issues

About some heat-sublimation issues

Exploring the pros and cons of thermal sublimation keycaps

Among keyboard enthusiasts and gamers, the choice of keycaps has always been a topic of great concern. Among them, thermal sublimation keycaps have attracted the attention of many consumers due to their unique craftsmanship and appearance. However, just like any other product, thermal sublimation keycaps have their pros and cons. In this article, we will discuss the advantages and disadvantages of thermal sublimation keycaps in detail.



  1. Personalization: One of the biggest advantages of thermal sublimation keycaps is their ability to be personalized. Through thermal sublimation technology, users can print various patterns and text on the keycaps to create a unique keyboard. This customization not only meets the user's individual needs, but also makes each keyboard a work of art.
  2. Bright and long-lasting colors: Heat sublimation keycaps use a special printing technology that can form a solid layer of color coating on the surface of the keycaps. This coating is not only colorful and saturated, but also has strong wear and fade resistance. Even after a long time of use, it can keep the color of the keycaps as bright as new.
  3. Good compatibility: Heat sublimation keycaps are suitable for many types of keyboards, including mechanical keyboards, membrane keyboards and so on. As long as the keyboard supports standard keycap sizes and interfaces, you can easily replace them with thermal sublimation keycaps without worrying about compatibility issues.


  1. Higher cost: Compared with ordinary ABS or PBT keycaps, thermal sublimation keycaps are more expensive to manufacture. As a result, their market price is also relatively high. For users with limited budget, they may find the price a bit hard to accept.
  2. Wear and tear: Although thermal sublimation keycaps are colorful and wear-resistant, their surface is still susceptible to wear and tear. Especially in the case of frequent use or violent keystrokes, the color coating on the surface of the keycaps may gradually wear off or peel off, affecting the aesthetics.
  3. Possible Color Difference: Due to the limitations of the heat sublimation technology, there may be a certain color difference between the heat sublimation keycaps produced in the same batch. Although this color difference is usually not too obvious, but for users who pursue perfection, they may feel some regret.


To sum up, thermal sublimation keycaps have obvious advantages in terms of personalization, bright and long-lasting colors and compatibility; however, there are some shortcomings in terms of cost, durability and color difference. Therefore, when choosing thermal sublimation keycaps, users need to weigh them according to their needs and budget.

Analysis of the color difference problem of thermal sublimation keycaps

Thermosublimation keycaps color difference problem overview

The color difference problem of thermal sublimation keycaps refers to the fact that during the heat sublimation process, the color on the keycaps deviates from the original design or the standard color card due to the influence of various factors, and this phenomenon is common in the production. The chromatic aberration problem may be manifested as uneven keycap color, whitish, greyish or too dark.

Reasons for Color Difference

There may be various reasons for color difference, including but not limited to the following:

  1. Raw material differences: PBT materials provided by different manufacturers may have different compositions, and these subtle compositional differences may affect the final color performance.
  2. Injection molding process: The tonnage of the injection molding machine, clamping force and mold design will affect the shape and color of the keycaps.
  3. Heat sublimation process: Improper control of temperature, pressure and time in the heat sublimation process may lead to color differences.
  4. Color management: Inaccurate color mixing and control is also an important factor causing color difference.

Methods to solve color difference

For the above reasons, the following methods can be taken to solve or reduce the problem of color difference:

  1. Optimize raw materials: Choose suppliers with stable quality and good reputation to ensure the consistency of raw materials.
  2. Improve the injection process: Adjust the parameters of the injection molding machine, improve the clamping force and optimize the mold design to reduce the problems of poor molding and daisy marks.
  3. Fine control of heat sublimation process: use high precision temperature and pressure control system to ensure the stability of heat sublimation process.
  4. Color management: Adopt professional color management system, design strictly according to CMYK color space, use Pantone, RAL and other color cards for color matching and calibration.



In conclusion, the problem of color difference of heat sublimation keycaps is the result of multiple factors, which needs to be solved through refined production and process control. In practice, we strictly supervise and adjust each step to ensure that each step is optimized to minimize the appearance of color difference.