Dye-sublimation printer

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Samsung SPP-2040 printing a photograph.
Part of the series on theHistory of printing
Woodblock printing
200
Movable type
1040
Intaglio
1430s
Printing press
1454
Lithography
1796
Chromolithography
1837
Rotary press
1843
Flexography
1873
Mimeograph
1876
Hot metal typesetting
1886
Offset press
1903
Screen-printing
1907
Dye-sublimation
1957
Phototypesetting
1960s
Photocopier
1960s
Pad printing
1960s
Laser printer
1969
Dot matrix printer
1970
Thermal printer
Inkjet printer
1976
3D printing
1986
Stereolithography
1986
Digital press
1993
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A dye-sublimation printer (or dye-sub printer) is a computer printer which employs a printing process that uses heat to transfer dye to a medium such as a plastic card, printer paper, poster paper, or fabric. The process is usually to lay one color at a time using a ribbon that has color panels. Most dye-sublimation printers use CMYO colors which differs from the more recognized CMYK colors in that the black dye is eliminated in favour of a clear overcoating. This overcoating (which has numerous names depending on the manufacturer) is effectively a thin laminate which protects the print from discoloration from UV light and the air while also rendering the print water-resistant. Many consumer and professional dye-sublimation printers are designed and used for producing photographic prints.
Sublimation is when a substance transitions between the solid and gas states without going through a liquid stage; the action of dry ice exposed to room temperature is a common example. In a dye-sublimation printer the printing dye is heated up until it turns into a gas, at which point it diffuses onto the printing media and solidifies. Prior to printing, the dye is stored on a cellophane ribbon. The ribbon is made up of three colored panels (cyan, magenta, and yellow) and one clear panel which holds the lamination material for the overcoating. Each colored panel is the size of the media that is being printed on; for example, a 6" by 4" dye sub printer would have four 6" by 4" panels. During the printing cycle, the printer rollers will move the media and one of the colored panels together under a thermal printing head, which is usually the same width as the shorter dimension of the print media. Tiny heating elements on the head change temperature rapidly, laying different amounts of dye depending on the amount of heat applied. After the printer finishes covering the media in one color, it winds the ribbon on to the next color panel and partially ejects the media from the printer to prepare for the next cycle. The entire process is repeated four times in total: the first three lay the colors onto the media to form a complete image, while the last one lays the laminate over top. This layer protects the dye from resublimating when handled or exposed to warm conditions.
Contents
1 Comparison with inkjet printers
2 Applications
3 Print Speed
4 Inks
5 See also
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Comparison with inkjet printers
Traditionally, the advantage of dye-sublimation printing has been the fact that it is a continuous-tone technology, where each dot can be any color. In contrast, inkjet printers can vary the location and size of ink droplets, a process called dithering, but each drop of ink is limited to the colors of the inks installed. Consequently, a dye-sublimation printer produces true continuous tones appearing much like a chemical photograph. An inkjet print is composed of droplets of ink layered and scattered to simulate continuous tones, but under magnification the individual droplets can be seen. In the early days of inkjet printing, the large droplets and low resolution made inkjet prints significantly inferior to dye-sublimation, but today's inkjets produce extremely high quality prints using microscopic droplets and supplementary ink colors, producing superior color fidelity to dye-sublimation.
Dye sublimation offers some advantages over inkjet printing. For one, the prints are dry and ready to handle as soon as they exit the printer. Since the thermal head doesn't have to sweep back and forth over the print media, there are fewer moving parts that can break down. As the dye never enters a liquid phase, the whole printing cycle is extremely clean; there are no liquid inks to clean up and no print heads to get clogged. These factors make dye-sublimation generally a more reliable technology over inkjet printing.
Dye-sublimation printers have some drawbacks compared to inkjet printers. Each of the colored panels of the ribbons, and the thermal head itself, must match the size of the media that is being printed on. Furthermore, only...(and so on) To get More information , you can visit some products about disaposable paper cup, etching; flower pot, . The Dripping Cup products should be show more here!