Security laminates for security documents
AssigneeAgfa-Gevaert
InventorsCarlo Uyttendaele, Ingrid Geuens
Life of this patent
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Abstract
A security laminate for securing a security document comprising: a) a biaxially stretched polyethylene terephthalate support; and b) a thermosensitive layer coated on the support; wherein the thermosensitive layer contains a binder, a substantially light-insensitive organic silver salt, an organic reducing agent and a toning agent selected from the group consisting of phthalimides, phthalazinones, benzoxazine diones and naphthoxazine diones. Methods for manufacturing security documents are also disclosed.
Claims15
1-15. (canceled)
A security laminate for securing a security document comprising
- a) a biaxially stretched polyethylene terephthalate support;
- and
- b) a thermosensitive layer coated on the support;
- wherein the thermosensitive layer contains a binder, a substantially light-insensitive organic silver salt, an organic reducing agent and a toning agent selected from the group consisting of phthalimides, phthalazinones, benzoxazine diones and naphthoxazine diones, and wherein the security laminate has one of the following dimensions as specified by ISO/IEC 7810:
- i) 85.60 mm×53.98 mm;
- ii) 105 mm×74 mm;
- or
- iii) 125 mm×88 mm.
A security document comprising a security laminate which provides for a laser-marked image to be viewed through a thermosensitive layer, the security laminate including:
- a) a biaxially stretched polyethylene terephthalate support;
- and
- b) a thermosensitive layer coated on the support;
- wherein the thermosensitive layer comprises a binder, a substantially light-insensitive organic silver salt, an organic reducing agent and a toning agent selected from the group consisting of phthalimides, phthalazinones, benzoxazine diones and naphthoxazine diones.
Dependencies are inferred from the claim text.