| (19) |
 |
|
(11) |
EP 1 420 087 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
16.06.2004 Bulletin 2004/25 |
| (43) |
Date of publication A2: |
|
19.05.2004 Bulletin 2004/21 |
| (22) |
Date of filing: 04.11.2003 |
|
| (51) |
International Patent Classification (IPC)7: C25D 21/14 |
|
| (84) |
Designated Contracting States: |
|
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
|
Designated Extension States: |
|
AL LT LV MK |
| (30) |
Priority: |
08.11.2002 JP 2002325097
26.06.2003 JP 2003182916
|
| (71) |
Applicants: |
|
- Nihon Hyomen Kagaku Kabushiki Kaisha
Tokyo (JP)
- Kida Seiko Kabushiki Kaisha
Habikino-shi, Osaka (JP)
|
|
| (72) |
Inventors: |
|
- Sekiguchi, Osamu c/o Nihon Hyomen Kagaku K.K.
Chigasaki-shi, Kanagawa-ken (JP)
- Usui, Shigetaka c/o Nihon Hyomen Kagaku K.K.
Chigasaki-shi, Kanagawa-ken (JP)
|
| (74) |
Representative: Swindell & Pearson |
|
48 Friar Gate
Derby DE1 1GY
Derby DE1 1GY (GB) |
|
| |
|
| (54) |
Method for supplying zinc ions to alkaline zinc plating solution |
(57) A method for supplying zinc ions to an alkaline zinc plating bath, wherein a source
of zinc ions and a zinc dissolution accelerating metal are put in the same vessel
and brought into direct contact with each other or put in different vessels and connected
via an electric conductor, and the source of zinc ions and the zinc dissolution accelerating
metal are moved in the vessel(s) in a plating solution by shaking, vibrating or rotating
the vessel(s) in order to accelerate zinc dissolution.