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 Dye-sublimation is a process of creating photographs by a printing technique that diffuses dye onto paper. This dye comes in the form of a ribbon and is converted into a diffused gas when heat is applied. The dye is then absorbed by a special receiving layer on the paper. A special print head warms to various precise temperatures and creates different levels of color depending on the amount of heat produced. The print head in the Hi-Touch consumer printers is capable of producing 256 levels of each color (cyan, magenta, yellow) and thus able to create a total of 16.77 million true colors by combining these three primary colors. With a special over-coating layer, the dye layers are sealed into the paper and the image is protected against UV light, fingerprints, and even water! There is no smudging, running, or blotching; prints are dry and ready to touch the instant they come out of the printer!
Continuous Tone vs. Half Tone Process
Dye-sublimation differs greatly from inkjet in many ways, most significantly in quality. Dye-sub is known for its high quality and continuous tone output. Continuous tone means that all gradations of color are used when creating an image. For example, when creating a gray scale, from black to white, a continuous tone printer will show all shades of gray in between the black and the white by actually printing them.
 A half-toning device such as an ink-jet printer will use a dithering technique of placing dots close together in order to trick the eye. In other words, ink jet printers use a series of black dots placed close to white dots in order to trick the eye into blending the pixels when viewed. With magnification the difference can be seen where the dye-sub output is clear and sharp but dots can be seen on ink-jet prints.
Digital Printing Made Easy and Affordable
 The HiTi PS, ID, Gala Series and Transphotable Photo Printers, are equipped with handy view-screens which let users preview images, perform editing functions, and print out digital images without a computer. The 640PS will accept six different media types (Compact Flash, Smart-Media, Secure Digital, Memory Stick, Multi-Media Card, and Micro-Drive) directly on the built-in card reader. Hi-Touch's cost per print average continues to be significantly less than the costs of inkjet printing and even more affordable than other dye-sublimation printing solutions. The 640PS is capable of printing with matte surface and glossy effects without changing media. Additionally, a unique "watermark" can be adding using HiTi's Magic Coating Technology which also waterproofs the prints and protects them from aging. The printer comes with HiTi's PhotoD廥ir嶪 imaging editing software which let’s users enhance and modify images on demand. Another nice feature is the ability to adjust individual color preferences for all prints. The 640PS produces true photo-lab quality prints in only 75 seconds.
  
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