Dai Nippon Printing Co., Ltd.

Kazutoshi Awano

Koji Eto

Satoshi Narita

Kenji Ueda

Hideshi Hattori

Daisuke Matsuura

Minoru Azakami

Makoto Hashiba

Munenori Ieshige

Kazuhiro Masuda

Masahiro Yuki

A major object of the present invention is to provide a volume hologram transfer foil that gives a volume hologram laminate higher in antiforgery function. The present invention achieves the object by providing a volume hologram transfer foil comprising: a substrate, a volume hologram layer carrying a recorded volume hologram that is formed on the substrate, and an image forming layer carrying a formed image and a heat seal layer containing a thermoplastic resin that are formed on the volume hologram layer, and comprising no reflective layer having a function to reflect light.

Volume hologram transfer foil, volume hologram laminate, and production method thereof

It is an object of the present invention to provide a thermal transfer sheet provided with a heat resistant slipping layer which reduces dye retransfer, has excellent heat resistance and slip properties, and prevents the defects of printed image from being generated due to wrinkles and the like during printing. A thermal transfer sheet comprising a base film, a color material layer on one surface of the base film, and a heat resistant slipping layer on the other surface of the base film,

Thermal transfer sheet

There is provided a printing method that can provide an image formed object which can suppress a change in density of a visible dye image and a lowering in fluorescence intensity and, at the same time, is free from concave/convex of the image surface and has a latent image invisible even under visible light. The printing method comprises a first step of forming a latent image of a fluorescent dye by thermal diffusion transfer; and a second step of providing a visible dye on the latent image by thermal diffusion transfer.

Printing method using thermal diffusion transfer, and image formed object

The present invention provides a security element which is low in cost, is difficult to forge or alter, and can be applied to objects where a high level of security is required. The security element comprises at least a substrate and a fluorescent colorant layer provided on the substrate, wherein the fluorescent colorant layer comprises N species of fluorescent colorants F, wherein N is an integer of 2 or more and n is an integer of not less than one and not more than N, in the same layer, and the fluorescent colorant Fabsorbs light with a wavelength of &#x3bb;and emits fluorescence with a wavelength of &#x3bb;.

Security element, thermal transfer sheet, intermediate transfer recording medium, and method for formation of security element

The invention provides a carrier device for a thermal transfer medium comprising a spool for winding and supporting a thermal transfer sheet or a thermal transfer receiving sheet, wherein a mark containing a coloring material which absorbs an electromagnetic wave of a predetermined wavelength &#x3bb;and emitting an electromagnetic wave of a wavelength &#x3bb;different from the wavelength &#x3bb;is provided on a region in a surface of the carrier device capable of being irradiated with an electromagnetic wave. The invention provides a discrimination method and a printer each of which utilizes such a carrier device capable of executing at least one process among the kind identification, the fake goods determination and the use amount calculation for the thermal transfer sheet or the thermal transfer receiving sheet based on a detection of the mark.

Carrier device for thermal transfer medium, discrimination method using the same, and printer

The present invention provides a protective layer thermal transfer sheet in which: a protective layer having a thermal transferring property is placed on at least one portion of one of the faces of a substrate sheet and the protective layer is formed by successively laminating at least a peeling layer, a plasticizer resistant layer and a heat adhesive resin layer on the substrate sheet, and in this structure, the heat adhesive resin layer is made from a polyester-urethane resin; and a printed article with the protective layer transferred thereto.

Growing community of inventors

Tokyo-to, Japan

Kazutoshi Awano