Sublimation transfer printing method and developer

Abstract

[Problem] To provide: a sublimation transfer printing method of a dry developing system, particularly a dry nonmagnetic developing system, still particularly a dry nonmagnetic one -component developing system, said sublimation transfer printing method being capable of achieving a high color depth and suppressing the staining of non-image areas of a printed product and the unevenness of printing thereof; a printed product obtained by the printing method; an intermediate recording medium which is to be used in the printing method; and a toner. [Solution] A sublimation transfer printing method which comprises adhering a toner to an intermediate recording medium according to an electrophotographic process, and transferring the dye contained in the toner adhered to the intermediate recording medium to an object to be printed through the sublimation of the dye, wherein: the toner comprises, as essential components, a polyester resin, a sublimable dye, and an external additive which contains strontium titanate as an essential component; and the amount of the strontium titanate is more than 0.3 to less than 3.0 mass% relative to the total mass of the toner. According to the sublimation transfer printing method, a high-quality printed product which exhibits a high color depth and is in an evenly printed state and the non-image areas of which are not stained can be obtained.

Description

technical field [0001] The present invention relates to a sublimation transfer dyeing method of dyeing a dyed object using an intermediate recording medium with a toner for sublimation transfer, a dyed product obtained by the dyeing method, a toner used in the dyeing method, and the use of the dyed object. Sublimation transfer dyeing method suppresses uneven dyeing. Background technique [0002] Methods of dyeing hydrophobic fibers represented by polyester cloth or hydrophobic resins represented by PET films by electrophotography can be roughly divided into two types. [0003] That is, two methods, the direct method and the sublimation transfer method. In the direct method, after the toner is directly supplied to the object to be dyed, the dye contained in the toner is dyed to the object to be dyed by heat treatment; in the sublimation transfer method, after the toner is provided to an intermediate recording medium such as paper, the intermediate recording The toner supply...

AI Technical Summary

Problems solved by technology

[0009] However, the sublimation transfer dyeing of the inkjet method has the following problems: the organic solvent constituting one of the components of the ink is volatilized by the heat when the dye is transferred, and the working environment is polluted; etc.

[0018] However, in the sublimation transfer dyeing method, it is generally difficult to balance the suppression of blank area contamination and the dyeing concentration, and it is considered that there is a trade-off relationship between the two

Therefore, a sublimation transfer dyeing method that has a high dyeing concentration and sufficiently suppresses contamination of blank areas has not yet been found

[0019] The dispersion stability of the sublimation dye used in the sublimation transfer method is inferior to general pigments or dyes used in color toners for electrophotography, so the sublimation dye bleeds out on the particle surface of the toner over time , the fluidity and agglomeration of the toner are deteriorated, and there are problems of image defects such as density unevenness, uneven wiping, and image retention (ghosting) of the intermediate recording medium.

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