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Volume: 17 | Article ID: art00010_2
New Thermal Offset Printing Employing Dye Transfer Technology (Tandem TOP-D)
  DOI :  10.2352/ISSN.2169-4451.2001.17.1.art00010_2  Published OnlineJanuary 2001

In this paper, we describe the development of a tandemtype new thermal offset printing technology that enables reproduction of high speed and high quality full color images on a pulp-based paper (e.g. ppc, re-cycled ppc paper, RC paper, etc.), employing a newly developed thermal transfer engine, and print media including an acceptor layer sheet, ink sheet, and an intermediate belt.The process consists of three steps:(1) acceptor layer (AL) formation from the AL sheet onto an intermediate belt;(2) dye transfer printing with dye sheets into the AL on the belt; and(3) transfer from the dyed AL onto a sheet of paper.The print head for the AL formation and three heads for dye transfer printing are separately located outside the belt along a large drum.The head for the dyed AL transfer is installed inside the belt. The new acceptor layer (AL) of the AL sheet, which has a heat-resistant sliding layer on the back side of the sheet, is arranged on a releasing layer (RL) on the base sheet, separately from the ink sheets including sublimation dye layers and back coat layers.This report describes studies of the basic print engine and print method on pulp-based papers for full color images, and the specially prepared AL sheet, ink sheets and the intermediate belt. More detailed results are given below of the relationship between the materials' properties and the AL formation and transfer mechanism, release strength between the AL and the other interfaces, print density characteristics, and color fastness properties.

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Nobuyoshi Taguchi, Yukikazu Oochi, Kumio Nago, Yukihiro Shimazaki, Shigeru Yoshida, "New Thermal Offset Printing Employing Dye Transfer Technology (Tandem TOP-D)in Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP17),  2001,  pp 499 - 503,

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