Volume hologram resin composition, surface relief hologram resin composition, and hologram layer, hologram transfer foil and brittle hologram label using the same
AssigneeDai Nippon Printing Co., Ltd.
InventorsHiroyuki Otaki, Kenji Ueda
Life of this patent
Estimating the term…
Abstract
The major object of the invention is to provide a volume-type hologram resin composition and a surface relief-type hologram resin composition having a high effect of preventing forgery and excellent in foil cutting, as well as a hologram layer and a hologram transfer foil using thereof. To achieve the object, there is provided a volume-type hologram resin composition having at least one kind of photopolymerizable compound, a photopolymerization initiator and fine particles, wherein the fine particles show magnetic resonance.
Claims11
A method of judging genuineness, wherein the method uses a magnetic resonance unit and is conducted to a member comprising a hologram layer
- the method comprises steps of:
- a step of detecting absorption energy absorbed by the hologram layer when an electromagnetic wave of the predetermined resonant frequency is applied to the hologram layer by utilizing the magnetic resonance unit, and
- a step of judging, based on the absorption energy, whether the hologram layer contains a fine particle showing magnetic resonance having the predetermined resonant frequency;
- and
- the hologram layer is judged genuine when the hologram layer contains the fine particle showing magnetic resonance having the predetermined resonant frequency, and the hologram layer is judged forgery when the hologram layer does not contain the fine particle showing magnetic resonance having the predetermined resonant frequency.
A method of judging genuineness, wherein the method uses a magnetic resonance unit and is conducted to a volume-type hologram resin composition having at least one kind of photopolymerizable compound, a photopolymerization initiator;
- the method comprises steps of:
- a step of detecting absorption energy absorbed by the volume-type hologram resin composition when an electromagnetic wave of the predetermined resonant frequency is applied to the volume-type hologram resin composition by utilizing the magnetic resonance unit, and
- a step of judging, based on the absorption energy, whether the volume-type hologram resin composition contains a fine particle showing magnetic resonance having the predetermined resonant frequency;
- and
- the volume-type hologram resin composition is judged genuine when the volume-type hologram resin composition contains the fine particle showing magnetic resonance having the predetermined resonant frequency, and the volume-type hologram resin composition is judged forgery when the volume-type hologram resin composition does not contain the fine particle showing magnetic resonance having the predetermined resonant frequency.
A method of judging genuineness, wherein the method uses a magnetic resonance unit and is conducted to a surface relief-type hologram resin composition having a resin material;
- the method comprises steps of:
- a step of detecting absorption energy absorbed by the surface relief-type hologram resin composition when an electromagnetic wave of the predetermined resonant frequency is applied to the surface relief-type hologram resin composition by utilizing the magnetic resonance unit, and
- a step of judging, based on the absorption energy, whether the surface relief-type hologram resin composition contains a fine particle showing magnetic resonance haying the predetermined resonant frequency;
- and
- the surface relief-type hologram resin composition is judged genuine when the surface relief-type hologram resin composition contains the fine particle showing magnetic resonance having the predetermined resonant frequency, and the surface relief-type hologram resin composition is judged forgery when the surface relief-type hologram resin composition does not contain the fine particle showing magnetic resonance haying the predetermined resonant frequency.
Dependencies are inferred from the claim text.