Decoration of articles and wares
Successive Digital Ink Jet printing heads decorate ceramic/glass and other wares; for ceramics/glassware an adhesion-promoting coating material is DIJ-applied on the print site; a DIJ-printable coating is overlaid, followed by a DIJ-applied background colour, the required decoration is DIJ-applied on the area, and a protective transparent coating is then DIJ-overlaid. Most layers are cured/dried with U/V and/or I/R and/or Hot-air. Successive impact-protective layers can be DIJ printed. Other DIJ-printed wares include flat ware, metal-ware, pens, markers and pencils, DVD and CD discs, which wares may not require adhesion promoting material or printable under-coating. The work stations may overlie one or more carousels which transport the wares.
1 . The method of coating a surface portion of an article, including the steps of positioning said article in a predetermined attitude upon a transport means at a first location; moving the article into working proximity to a first Digital Ink Jet printing means; applying a first coating by the first printing means to a predetermined first surface area of the article; moving the article to a second DIJ printing means, and applying a second coating to a second, predetermined area of the article; and curing at least one said coating by exposure to curing means selected from the group consisting of U/V, I/R and Hot-air.
2 . The method as set forth in claim 1 , wherein said second surface area is substantially coincident with said first surface area.
3 . The method as set forth in claim 1 , wherein said first coating is an adhesion promotion material, and said second coating is a printable coating.
4 . The method as set forth in claim 1 , including moving said article to a third DIJ printing means, and DIJ printing over said second coating a DIJ-print colour background.
5 . The method as set forth in claim 4 , including moving said article to a fourth DIJ printing means, and DIJ-printing decorative material over at least a portion of the area of said colour background.
6 . The method as set forth in claim 5 , including moving said article to a fifth DIJ printing means, and DIJ-printing a transparent protective coat over at least a portion of said decorative material.
7 . The method as set forth in claim 1 , wherein one said coating is a urethane-based coloured ink undercoat to provide a DIJ-print colour background for over-printing.
8 . The method as set forth in claim 7 , wherein said over-printing is DIJ-applied decorative material.
9 . The method as set forth in claim 8 , including applying a third, transparent protective coating over at least a portion of said decorative material.
10 . A decorated product having a DIJ decoration applied to a predetermined surface area of the product, including: an adhesion promoting first coating applied to at least a predetermined area to be decorated; a second, printable coating DIJ applied at least to said predetermined area to be decorated; and a DIJ-applied decoration applied to said second coating.
11 . The product as set forth in claim 10 , further including a substantially transparent outer, protective coating, DIJ-applied in overlying, protective relation with said decoration.
12 . The product as set forth in claim 11 , wherein said substantially transparent outer, protective coating is DIJ applied and covers said decoration.
13 . The product as set forth in claim 11 , wherein said substantially transparent outer, protective coating is DIJ applied and covers a major surface portion of said product.
14 . A decorated product as set forth in claim 10 , wherein a white undercoat is DIJ applied to said predetermined surface area; a first colour portion of said decoration is DIJ applied on said undercoat; and at least one further colour coat is DIJ applied in predetermined positioned relation with said first colour portion of said decoration.
15 . The product as set forth in claim 14 wherein said DIJ decoration includes a plurality of basic colours.
16 . Apparatus for decorating hand-portable wares, comprising first transport means for moving said wares; transfer means for receiving said wares in mutually spaced relation thereon; said transfer means moving in a predetermined arcuate path and having a plurality of overhead digital ink jet printing heads in mutually spaced relation along said path, wherein at least one said printing head is adapted to deposit a thin, non-decorative layer upon a predetermined surface portion of said wares by discrete jet application; and another said printing head is adapted to deposit at least one decorative layer upon at least a portion of said predetermined surface portion of said wares; and drying/curing means positioned adjacent said transfer means, to dry/cure said layers on said wares.
17 . The apparatus as set forth in claim 16 , wherein said transfer means consists of at least one rotatable carousel.
18 . The apparatus as set forth in claim 16 , wherein said transfer means consists of a first, lower level carousel and a second upper level carousel located in superposed relation over said first carousel; and transfer re-positioning means for transferring said wares between said levels.
19 . The apparatus as set forth in claim 18 , wherein said first and said second carousels rotate step-by-step in predetermined, mutually scheduled relation, for sequential, step-by-step decoration of said wares.
20 . The apparatus as set forth in claim 18 , wherein said first and said second carousels rotate in mutually opposed directions.