Record receiver having plural interactive leaves or a colorless – Having plural interactive leaves
Patent
1990-10-01
1992-08-04
Hess, Bruce H.
Record receiver having plural interactive leaves or a colorless
Having plural interactive leaves
428195, 428409, 428500, 428913, 428914, B41M 5035, B41M 526
Patent
active
051359057
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an image-receiving sheet used in combination with a heat transfer sheet including a dye layer containing a sublimable dye which is to be melted or sublimated by heat and passed onto said image-receiving sheet.
2. Statement of the Prior Art
In some attempts to make images, heat transfer sheets including a dye layer containing a sublimable dispersion dye are heated by a thermal head, and the like, in a dotted pattern corresponding to image signals, thereby passing the dye onto the surfaces of image-receiving sheets.
Such image-receiving sheets comprise a sheet-like substrate and a dye-receiving surface layer formed of polyester resin, and the like, for receiving a dye coming from the heat transfer sheets, thereby giving a clear printed image. A problem with such image-receiving sheets, however, is that although they are of dyeability so improved that distinct images can be obtained, they are poor in weather resistance, as can be appreciated from the discoloration, for example, of the images after printing.
In order to provide a solution to this problem, it has been attempted to improve weather resistance by making use of ultraviolet absorbers, and the like. Such an attempt, however, again poses several problems such as requiring the additional step of incorporating UV absorbers and the resulting cost rise.
The image-receiving sheets, set forth in Japanese Patent Kokai Application Nos. 59(1984)-223425 and 60(1985)-24996, use a vinyl chloride polymer as the dye-receiving layers but, nonetheless, are less than satisfactory in terms of light resistance. The present inventor has already attempted to improve light resistance by using a copolymer of vinyl chloride with an acrylic type monomer as a dye-receiving layer. However, the resulting image-receiving sheet is still less than satisfactory in terms of the improvement in light resistance.
A main object of the present invention is to provide an image-receiving sheet which is free from such drawbacks as mentioned above, and is much more improved in terms of dyeability and weather-resistance-after-printing than conventional ones.
DISCLOSURE OF THE INVENTION
With the above object in mind, the present invention provides an image-receiving sheet used in combination with a heat transfer sheet including a dye layer containing a sublimable dye which is to be melted or sublimated by heat and passed onto it, said image-receiving sheet being characterized in that a sheet-like substrate includes on its surface a dye-receiving layer for receiving a dye coming from said heat-transfer sheet, said dye-receiving layer comprising a copolymer obtained by the copolymerization of (a) vinyl chloride, (b) an acrylic acid type monomer and (c) a linear polymer having a vinyl group at an end.
The present image-receiving sheet of such a structure as mentioned above is improved in terms of not only dyeability and weather-resistance-after-printing but also in the storability of printed images in particular.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a sectional view showing a basic structure of the image-receiving sheet according to the present invention,
FIG. 2 is a perspective view of the image-receiving sheets (assembly) according to one embodiment of the present invention,
FIG. 3 is a plan view showing one embodiment of the protective sheet,
FIG. 4 is a perspective view of a bag,
FIG. 5 is a perspective view of the bag into which the image-receiving sheets have ben placed,
FIG. 6 is a perspective view of one example of the heat-transfer sheet,
FIG. 7 is a perspective view of a bag, and
FIG. 8 is a perspective view of a paper box.
BEST MODE FOR CARRYING OUT THE INVENTION
As illustrated in the sectional view of FIG. 1, an image-receiving sheet, shown at 1, according to the present invention basically comprises a sheet-like substrate 11 and a dye-receiving layer 12 formed on its surface for receiving a dye coming from a heat-transfer sheet.
The sheet-like substrates used in the present inventio
REFERENCES:
patent: 4837200 (1989-06-01), Kondo et al.
Egashira Noritaka
Iwata Tamami
Kawasawa Takashi
Nakamura Yoshinori
Ohtake Kiyobumi
Dai Nippon Insatsu Kabushiki Kaisha
Hess Bruce H.
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