Thermal transfer printing

Thermal reforming Thermal sensitization Thermal stability Thermal transfer Thermal-transfer printing Thermal treatment Thermal wave imaging Thermate Thermate-TH2 Thermate-TH3 Therm-Chek... 

The need to obtain color hard copies from electronic systems such as TV and video sets, or from personal computers, has been increasing. Several methods have been proposed to obtain hard copies of full color images. Among them, sublimation thermal-transfer printing has the following characteristics the quaHty of the printed color picture is extremely high, and the equipment is compact, quiet, and easy to manipulate as well as to maintain. 

Table 8. Examples of Magenta Dyes for Sublimation Thermal-Transfer Printing...

I tjzoIo[ 1,5-/] [1,2,4] triazole azomethines were investigated and used for manufacturing of inks, optical filters, thermal transfer printing materials, and toners. Some of them were prepared and formulated into a water-thinned jet printing ink <2002JAP256164, 2000EUP1035172>. 

Thermal techniques, in nondestructive evaluation, 17 420-421. See also Heat entries Heating entries Thermal-transfer printing, 9 242, 338 Thermal transfer processes, 19 320 Thermal transition, in shape-memory polymers, 22 357-358, 359t, 360, 361-362... 

Magenta dyes -for sublimation thermal-transfer printing pYES, ANTHRAQUINONE] (Vol 8)... 

Disperse Dyes. These are substantially water-insoluble nonionic dyes for application to hydrophobic fibers from aqueous dispersion. They are used predominantly on polyester and to a lesser extent on nylon, cellulose, cellulose acetate, and acrylic fibers. Thermal transfer printing and dye diffusion thermal transfer (D2T2) processes for electronic photography represent niche markets for selected members of this class (see Chapter 6). 

Although the thermal transfer printing technique does not offer resolution as high as pCP, it does have enormous flexibility in the materials that can be patterned. It also benefits from its all dry and purely additive operation it does not require etchants or solution routes for depositing or patterning the key materials. It is necessary, however, to balance the adhesion between the layers that are sequentially transfer such that interfaces have intimate physical and electrical contact. In addition, current commercial systems have pixel sizes of 5 pm x 2.2 pm, which limit the resolution. With the current DNSSA-PANI/SWNT formulation and a printer of this type, it is possible to print 10-pm channels and 25-pm lines. 

For applications that demand sub-20 pm resolution, it may be possible to combine micro-contact and thermal transfer printing high resolution source/drain electrodes printed with pCP could be used with other components that are patterned by thermal transfer. These and other strategies that combine and match different patterning techniques may provide an attractive means of building plastic circuits. 

Figure 2 The transport of a multifunctional hydroxyl dye to various dye-acceptor polymers during thermal transfer printing. P is the effective permeability coejficient Tg is the glass transition temperature of the polymer and bp are solubility parameters of dye and polymer, respectively Vj ,cr and are infrared absorptions estimating the dye-polymer specific interaction...

Some of the information required may be in the form of bar codes. This has stimulated the European Pressure Sensitive Manufacturers Association (EPMSA) in line with the Article Numbering Association (ANA) EAN guidelines, to produce a standard for bar code overprinting on pressure sensitive labels. EAN bar codes can now be successfully printed onto labels using flexographies, or thermal transfer printing. 

Thermal transfer printing is the selective heating (computer-controlled) and cooling of small elements in a print-head which can be used to impress a one-use thermal ribbon onto the substrate surface. Resolutions of up to 12 dots per mm can be achieved. 

Bicyclic feis(l,2-diazocine) derivative (34 X = N3), prepared from the carboxylic acid (34 X = OH) derived from oxidation of the corresponding bis(perhydro)diazocine, is reported as an initiator for radial block copolymerization reactions <85USP453230i, 85USP4556512), while the exothermic nature of the thermal decomposition of hexahydro derivative (35) suggests this compound to be a promising heat amplification material for thermal transfer printing applications <82USP454814). 

FIGURE 13 Schematic of laser dye thermal transfer printing. [From Kitamura, T. etal. (1999). Proceedings of IS T s 1999 PICs Conference, IS T, Springfield, VA by permission of the copyright holder, the Society for Imaging Science and Technology]. 

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