Digital sublimation ink, what are the effective ways to reduce color loss?

At present, in the digital sublimation ink color management technology, the so-called color feature connection space is the color space of CIE1976Lab, and the color of any device can be converted into this space to form a "general" description mode, and then color Match conversion. Within the computer operating system, the task of implementing color matching conversion is done by the "color matching module", which is reliable for color conversion and has important significance for color matching.

So, how to achieve color transfer in the "universal" color space, to achieve loss of color or as little loss as possible?

Digital Sublimation Ink

This requires each device to generate a profile, the color profile of the device. We know that sublimation inks exhibit a variety of different materials, materials, and processes when presenting and delivering colors. In color management, high-fidelity rendering of the colors presented on one device on another device requires us to understand the color rendering characteristics of the colors on various devices. Since the device-independent color space, CIE1976Lab chromaticity space, has been selected, the color characteristics of the device are expressed as: the correspondence between the description value of the device and the chromaticity value of the "universal" color space. A color description file for the device.

Device color characterization file

Among the sublimation transfer ink color management technologies, there are three types of device color characterization files. The first type is the scanner profile, which provides standard documents of Kodak, Agfa, and Fujitsu and standard data of these originals. These originals are input by the scanner, and the difference between the scanned data and the standard original data reflects the scanner. The second type is the characteristic file of the display, which provides software to measure the color temperature of the display, and then generate a color block on the screen, which reflects the characteristics of the display; the third type is the printing device. The feature file, which also provides a set of software, which generates a graphic containing hundreds of color blocks in the computer, and then outputs the graphic on the output device. If it is a printer, the proof is directly printed, and the printing machine first outputs the film. , proofing and printing, measuring the output image reflects the characteristic file information of the printing device.

Sublimation Printing

The generated profile, that is, the color profile, is a sublimation transfer ink composed of three parts: a file header, a markup table, and a markup element data. A file header that contains basic information about the color signature file, such as file size, type of color management method, version of the file format, device type, color space of the device, chroma space of the feature file, operating system, device manufacturer , color reproduction target, original medium, light source chromaticity data, etc., the file header occupies a total of 128 bytes. A tag table, which contains information on the number of tags, storage location, and data size, without the specific content of the tag. The tag name name occupies 4 bytes, and each tag entry has 12 bytes. . The mark element data, which stores various information required for color management at a predetermined position according to the description of the mark table, and varies according to the complexity of the mark information and the amount of data of the mark.
For the color profile of the equipment in the printing enterprise, the operator of the graphic information inkjet sublimation ink processing is obtained in two ways.
The first way is to use the special profile creation software to generate the applicable color characterization files according to the actual situation of the existing equipment. The generated files are usually more accurate and more in line with the user's actual situation. As the state of equipment, materials, and process flows change or shift over time. Therefore, it is necessary to re-create the profile at intervals to adapt to the color response at the time.
The second way is when the device is purchased, the profile provided by the manufacturer along with the device, which can meet the general color management requirements of the device. When the device application software is installed, the profile is loaded into the system.

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