Noritake Co., Ltd.

Noritake Co., Limi Ted

Tomoshi Kumazawa

Hiromichi Hayashi

Yuuki Arakawa

Jun Shiota

Asako Naruse

Inkjet ink disclosed herein, usable for at least a transfer sheet suitable for an inorganic substrate, contains an inorganic solid content and a photocurable monomer component. The monomer component contains at least a monofunctional acrylate-based monomer, a monofunctional N-vinyl compound monomer, and a polyfunctional vinylether-based monomer. With respect to 100% by mass as the total weight of the monomer component, the monofunctional acrylate-based monomer is contained at a weight ratio of 40% by mass to 96% by mass, the monofunctional N-vinyl compound monomer is contained at a weight ratio of 2% by mass to 20% by mass, and the polyfunctional vinylether-based monomer is contained at a weight ratio of 2% by mass to 40% by mass.

Inkjet ink

An inkjet ink for a glass substrate can enable formation of an aesthetic image with high concealability on the surface of the glass substrate. The inkjet ink disclosed here can include: an inorganic solid including an inorganic pigment that develops a color except for black and a glass frit; a monomer component having a photocuring property; and a photoinitiator. In the inkjet ink, a volume ratio of the inorganic solid in a case where an ink total volume is 100 volume % can be 35 volume % or less, a volume ratio of the inorganic pigment in the case where a total volume of the inorganic solid is 100 volume % can be 15 volume % or more and less than 90 volume %, and a volume ratio of the inorganic pigment to the photoinitiator can be 11 times or less.

An inkjet ink for a glass substrate can enable formation of an aesthetic image with high concealability on the surface of the glass substrate. The inkjet ink disclosed here can include: an inorganic solid including an inorganic pigment that develops black and a glass frit; a monomer component having a photocuring property; and a photoinitiator. In the inkjet ink, a volume ratio of the inorganic solid in a case where an ink total volume is 100 volume % can be 35 volume % or less, a volume ratio of the inorganic pigment in the case where a total volume of the inorganic solid is 100 volume % can be 15 volume % or more and less than 90 volume %, and a volume ratio of the inorganic pigment to the photoinitiator can be 6 times or less.

The present invention provides a red paint for ceramic decoration, including a glass matrix, and a red colorant and a protective material that are intermingled in the glass matrix. The red colorant contains gold nanoparticles and silver nanoparticles. The protective material contains silica nanoparticles.

Red paint for ceramic decoration

The present invention provides an inkjet ink for a ceramic substrate, the inkjet ink making it possible to prevent a printed layer from peeling away after firing and allowing a desired image to be better fixed on a ceramic substrate. In the inkjet ink for a ceramic substrate disclosed here, the proportion of a monofunctional monomer in a monomer component is at least 90 mass %, the volume ratio of an inorganic solid relative to the total volume of the inkjet ink is 10 vol % to 20 vol %, and the ratio of the content of an N-vinyl compound to that of the monomer component (N-vinyl compound/monomer component) in the inkjet ink is 0.05 to 0.8 in terms of mass.

Growing community of inventors

Nagoya, Japan

Tomoshi Kumazawa