| (19) |
 |
|
(11) |
EP 1 745 940 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
11.07.2007 Bulletin 2007/28 |
| (43) |
Date of publication A2: |
|
24.01.2007 Bulletin 2007/04 |
| (22) |
Date of filing: 22.04.2006 |
|
| (51) |
International Patent Classification (IPC):
|
|
| (84) |
Designated Contracting States: |
|
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE
SI SK TR |
|
Designated Extension States: |
|
AL BA HR MK YU |
| (30) |
Priority: |
20.07.2005 US 700994 P
|
| (71) |
Applicant: JDS Uniphase Corporation |
|
Milpitas CA 95035 (US) |
|
| (72) |
Inventors: |
|
- Raksha, Vladimir P.
California 95403 (US)
- Coombs, Paul G.
California 95405 (US)
- Teitelbaum, Neil
Ontario K1S 5C4 (CA)
- Markantes, Charles T.
California 95401 (US)
- Argoitia, Alberto
California 95405 (US)
|
| (74) |
Representative: McKechnie, Neil Henry et al |
|
Kennedys Patent Agency Limited
185 St Vincent Street
Glasgow G2 5QD
Glasgow G2 5QD (GB) |
|
| |
|
| (54) |
A two-step method of coating an article for security printing |
(57) A two-step method of making of a security printed image is disclosed and includes
coating of the surface of a substrate with a predetermined image shape with an ink
containing flaked magnetic pigment in a predetermined concentration, exposing a wet
printed image to a magnetic field to align magnetic particles in a predetermined manner,
allowing the ink to cure, and coating the substrate with a second printed image on
the top of the first image. The second printed image with the same or different image
shape is printed with another ink containing clear or dyed ink vehicle mixed with
flaked magnetic pigment in a low concentration, exposed to the magnetic field of the
same or different configuration as the first printed image and cured until the ink
is dry.