ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYALTRBGCZEE....SK................
*
J
DIM350 (Ver 2.1 Jan 2001) 2100000/0
The file contains technical information submitted after the application was filed and not included in this specification
1438195
EUROPEAN PATENT SPECIFICATION
B1
20051207
EP
02775067.8
20021011
20040517
20040928
en
en
en
BO20010634
20011016
IT
20051207
200549
20040721
200430
20051207
200549
20050624
7
7B 41M 5/00 A
7B 41M 7/00 B
7B 05D 7/06 B
7B 05D 7/08 B
de
VERFAHREN ZUR VORBEREITUNG EINER HOLZOBERFLÄCHE ZUM EMPFANGEN VON DEKORATIONEN MIT TINTE AUF WASSERBASIS
en
METHOD TO PREPARE A WOOD SURFACE TO RECEIVE DECORATIONS PERFORMED WITH WATER BASED INK
fr
PROCEDE DE PREPARATION D'UNE SURFACE EN BOIS POUR L'APPLICATION DE DECORATIONS A BASE D'ENCRE A L'EAU
DE-A- 19 727 766
JP-A- 62 278 080
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 10, 17 November 2000 (2000-11-17) -& JP 2000 190462 A (MASTER MIND:KK), 11 July 2000 (2000-07-11)
SETTI, Leonardo
Via Portazza, 8
I-40139 Bologna
IT
GIULIANI, Silvia
Via Portazza, 8
I-40139 Bologna
IT
Lesepidado Srl
04330640
P8029 EU/PCT
Via G. Dozza 5
40139 Bologna
IT
Beszédes, Stephan G.
00001931
Patentanwalt, Münchener Strasse 80a
85221 Dachau
DE
AT
BE
BG
CH
CY
CZ
DE
DK
EE
ES
FI
FR
GB
GR
IE
IT
LI
LU
MC
NL
PT
SE
SK
TR
IB2002004196
20021011
en
WO2003033273
20030424
200317
20030605
000000

FIELD OF THE ART
The present invention refers to the technological field of the realization of permanent decorations on wood surfaces.

STATE OF THE ART
In order to give a wood surface an outlook of rich wood it can currently be used a covering with a dry transfer sheet previously decorated or can be employed other direct print techniques.
The known techniques require technological processes with high environmental impact, coupled with the necessity of building expensive clichés that obviously produce repetitive decorations. The standard patterns of the wood decorations show clearly that the wood surface is artificial. The technique above described requires stores for the rolls of dry-transferable sheets. Generally the disposal of the stores of the cliches need expensive costs.
In JP-A-2000 190462 (Patents Abstracts of Japan) it has been described the forming of a printing image with a water-based ink by a ink-jet printer onto a recording medium having a water absorbability such as a wooden medium or the like. The image accepting layer is formed on the printing surface of the water absorbable recording medium by applying a vinyl acetate emulsion-based resin. However, the latter is not a hydrophilic substance but a hydrophobic one.
From JP-62-278080 (Patent Abstracts of Japan) it has been known to provide an ink jet recording material capable of recording images with high resolution and high quality, by incorporating an epoxy-modified polyvinyl alcohol (PVA). The base into which the epoxy-modified polyvinyl alcohol has been incorporated also can be good. However, epoxy-modified polyvinyl alcohol is not a hydrophilic substance but a hydrophobic one.
The present invention suggests a method to prepare an inexpensive wood surface to receive decorations with high chromatic definition that, being performed with ink-jet printers controlled by computers, can be not repetitive, thus resembling the peculiar outlook of the surfaces of different natural woods.
Furthermore, the traditional stores are transformed by the present invention in the informatic archives in which the images are stored without added costs and with an optimized management.
The introduction of the present method, allows for the employment of technologies with a low environmental impact.

DESCRIPTION
The invention is now disclosed with reference to the figures of the attached drawings, as a not limiting example.
- Figure 1 schematizes the superficial treatment 2 of a wood surface 1 with etching compound or hydrophilic macromolecular substances, or with a combination of the two., capable to bind the die or the water respectively, which are content in the water-based ink.
- Figure 2 schematizes the decorations 3 performed with water-based ink 4 through ink-jet techniques 5.
- Figure 3 schematizes the covering of the decorations 3 with a protective layer 6.
The clearness of the picture shows the simplicity of the finding that is the object of the present invention, the reliability of the technological operations, the low cost of realization and the variety of programmable decorations.
It should be pointed out that this method allows the realization of a wide choice of non repetitive decorations having the peculiar outlook of different kind of natural wood.All the kinds of equipment to obtain decorations on wood surfaces, performed through ink jet techniques, that will feature the same characteristics as the ones described, illustrated and hereinafter claimed, will be held as being part of the protection sphere of the present invention.
1. Method for preparing a wood surface (1) to receive ink-jet (4) decorations (3) by a superficial treatment, characterized in that the superficial treatment (2) is made as a preventive one with etching compounds or hydrophilic substances, or with a combination of the two.
2. Method according to claim 1, characterized in that as inks (4) such based on water are used the water of the inks (4) being absorbed by the hydrophilic substances and the dye of which being fixed on the wood surface (1) by the etching substances.
3. Method according to claim 1 or 2, characterized in that the decorations (3) performed on the wood surface (1) are covered with a protective film (6).
4. Method according to claims 1 to 3, characterized in that the decorations (3) on the wood surface (1) are performed by technologies having a low environmental impact.
1. Verfahren zur Vorbereitung einer Holzoberfläche (1) zur Aufnahme von Tintenstrahl(4)-Dekorationen (3) durch eine Oberflächenbehandlung,
dadurch gekennzeichnet, dass
die Oberflächenbehandlung (2) als eine schützende mit ätzenden Verbindungen oder hydrophilen Substanzen oder mit einer Kombination von den beiden erfolgt.
2. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass
Tinten (4) auf Wasserbasis verwendet werden, wobei das Wasser der Tinten (4) durch die hydrophilen Substanzen aufgenommen wird und deren Farbstoff an der Holzoberfläche (1) durch die ätzenden Substanzen fixiert wird.
3. Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass
die auf der Holzoberfläche (1) durchgeführten Dekorationen (3) mit einem Schutzfilm (6) überzogen werden.
4. Verfahren nach Anspruch 1 bis 3,
dadurch gekennzeichnet, dass
die Dekorationen (3) auf der Holzoberfläche (1) durch Technologien mit einer geringen Auswirkung auf die Umwelt durchgeführt werden.
1. Procédé de préparation d'une surface en bois (1) pour la réception de décorations (3) à jet d'encre (4) par un traitement de surface,
caractérisé en ce que
le traitement de surface (2) est réalisé sous une forme préventive avec des composants corrosifs ou des substances hydrophiles, ou par une combinaison des deux.
2. Procédé selon la revendication 1,
caractérisé en ce que
des encres (4) à base d'eau sont utilisées, l'eau des encres (4) étant absorbée par les substances hydrophiles et leur teinte étant fixée sur la surface en bois (1) par les substances corrosives.
3. Procédé selon la revendication 1 ou 2,
caractérisé en ce que
les décorations (3) réalisées sur la surface en bois (1) sont recouvertes d'un film de protection (6).
4. Procédé selon la revendication 1 à 3,
caractérisé en ce que
les décorations (3) sur la surface en bois (1) sont réalisées par des technologies ayant un faible impact sur l'environnement.