Ink for ceramic surfaces
AssigneesDip-Tech Ltd., Yissum Research Development Company of the Hebrew University of Jerusalem
InventorsShlomo Magdassi, Gera Eron, Yelena Vinetsky
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Abstract
The present invention concerns ink for printing on ceramic surfaces such as glass, which contains glass frits for silica nanoparticles and optionally a pigment, and is suitable for ink jet printing.
Claims43
An ink composition for printing on a glass substrate, to be fused to the substrate upon firing, the ink characterized by:
- (a) having viscosity, below 20_cps at jetting temperature and having 39-50wt % solids content;
- and
- (b) becoming an integral part of the substrate upon exposure to temperatures above 500° C. and below 700° C.;
- the ink composition comprising :
- 1) a vehicle being a liquid at 15° C.;
- and
- 2) sub-micron particles of binding composition.
An ink composition for printing on a ceramic substrate, to be fused to the substrate upon firing, the ink characterized by:
- (a) having viscosity, below 20_cps at jetting temperature and having 39-50wt % solids content;
- and
- (b) becoming an integral part of the substrate upon exposure to temperatures above 500° C.;
- the ink composition comprising:
- 1) a vehicle being a 15° C. room temperature and comprising at least one organic solvent selected from the group consisting of PM (propylene glycol mono methyl ether), DPM (dipropylene glycol mono methyl ether), TPM (tripropylene glycol mono methyl ether), PnB (propylene glycol mono n-butyl ether), DPnB (dipropylene glycol mono butyl ether), TPnB (tripropylene glycol mono n-butyl ether), PnP (propylene glycol mono propyl ether), DPnP (dipropylene glycol mono propyl ether), TPnB-H (propylene glycol butyl ether), PMA (propylene glycol mono methyl ether acetate), Dowanol DB (diethylene glycol mono butyl ether), other ethylene or propylene glycol ethers, and a combination of two or more of the above listed solvents;
- and
- 2) sub-micron particles of binding composition.
A method of printing on a ceramic substrate, the method comprising:
- (a) preparing an ink composition which is liquid at room temperature, the ink composition having 39-50wt % solids content, comprising a vehicle that is liquid at 15° C. and sub-micron particles of binding composition;
- (b) applying the ink to the ceramic substrate at a viscosity below 20_cps;
- and
- (c) firing the substrate at a temperature above 500° C. so that the sub-micron particles become an integral part of the substrate.
A method of printing on a glass substrate, comprising:
- ink jet printing a composition having 39-50wt % solids content, comprising a vehicle being a liquid at 15° C. and having sub-micron particles of binding composition and having viscosity below 20cps at jetting temperature onto the glass substrate to produce a pattern;
- fixing the pattern to the substrate by application of energy;
- and
- firing the substrate at a temperature above 500° C. and below 700° C. so that the composition becomes an integral part of the substrate.
Dependencies are inferred from the claim text.