A bearing assembly includes at least one inner ring and at least one outer ring, and at least one surface of the inner or outer ring is partially colored with an acid-free ink. If the at least one surface includes a surface defect such as a scratch in a black-oxide coating, the acid-free ink may be applied to the scratch to at least partially conceal it.

An ink composition comprising a nanomaterial and a liquid vehicle, wherein the liquid vehicle comprises a composition including one or more functional groups that are capable of being cross-linked is disclosed. An ink composition comprising a nanomaterial, a liquid vehicle, and scatterers is also disclosed. An ink composition comprising a nanomaterial and a liquid. vehicle, wherein the liquid vehicle comprises a perfluorocompound is further disclosed. A method for inkjet printing an ink including nanomaterial and a liquid vehicle with a surface tension that is not greater than about 25 dyne/cm is disclosed. In certain preferred embodiments, the nanomaterial comprises semiconductor nanoerystals. Devices prepared from inks and methods of the invention are also described.

Disclosed herein are ink compositions for making a conductive copper structure. The ink composition comprise a copper metal precursor compound, a chelating agent, and a reducing agent. In some embodiments, the redox potential of the reducing agent is adjusted for controlled reduction of copper ion in the copper metal precursor to metal copper metal. Also disclosed herein are methods for making the ink compositions and methods for using the same.

Disclosed herein is a water-based dispersion, which includes metal oxide nanoparticles and a zwitterionic stabilizer. More specifically, the dispersion comprises a metal oxide nanoparticle having the formula (1) MmM′On, wherein M is an alkali metal, m is greater than 0 and less than 1, M′ is any metal, and n is greater than 0 and less than or equal to 4; a zwitterionic stabilizer; and a balance of water. Also disclosed herein is a jettable composition, which includes metal oxide nanoparticles having the formula (1) MmM′On wherein M is an alkali metal, m is greater than 0 and less than 1, M′ is any metal, and n is greater than 0 and less than or equal to 4; a zwitterionic stabilizer; a surfactant; and a balance of water.

The present invention relates to formulations for the preparation of organic electronic devices (OLEDs) which comprise (A) at least one specific ester solvent containing an aromatic group and (B) at least one organic functional material selected from organic conductors, organic semiconductors, organic fluorescent compounds, organic phosphorescent compounds, organic light-absorbent compounds, organic light-sensitive compounds, organic photosensitisation agents and other organic photoactive compounds, selected from organometallic complexes of transition metals, rare earth metals, lanthanides and actinides.

The absorbance or emission wavelength of composite materials comprising a transition metal doped shell disposed over a rare earth doped core and a functionalizable group on the surface of the transition metal doped shell can change upon subjection to a carboxylic acid. This method of changing the absorbance or emission wavelength of a composite material can be used to identify counterfeit currency using an ink comprising a composite material.

The absorbance or emission wavelength of composite materials comprising a transition metal doped shell disposed over a rare earth doped core and a functionalizable group on the surface of the transition metal doped shell can change upon subjection to a carboxylic acid. This method of changing the absorbance or emission wavelength of a composite material can be used to identify counterfeit currency using an ink comprising a composite material.

A sprayable and hygroscopic ink for a digital printing process on a fabric includes 3.0 parts by weight to 6.0 parts by weight of a colorant, 0.5 parts by weight to 2.0 parts by weight of a hygroscopic agent, 0.5 parts by weight to 1.0 part by weight of a surfactant, and a balance of a solvent, in which a pH value of the hygroscopic agent is between 6.0 and 8.5 at 25° C., and a particle diameter D90 of the sprayable and hygroscopic ink is between 180 nm and 220 nm.

An information processing apparatus includes a changing unit configured to change an arrangement of pixels which are decided from the first ink data and in which the first ink is printed and the number of dots of the first ink in each pixel, based on the arrangement of pixels which are decided from the first ink data and in which the first ink is printed, and an arrangement of pixels which are decided from the second ink data and in which the second ink is printed.

The present invention relates to a double network bioink that is customizable and tailorable in terms of mechanical characteristics, diffusivity, and biological functionality that is printable at room temperature and cytocompatible. Double network bioinks of the present invention can be utilized as a standard for comparison and evaluation of bioinks and during calibration and/or are suited for the education field as a “blank slate” bioink that can be utilized to convey different scientific concepts. Specific bioinks included comprise: one or more biocompatible or non-biocompatible thickener; one or more polyethylene glycol based crosslinkable network; one or more photoinitiator; and/or optionally, one or more additives to impart desired and/or different characteristics to the bioink. In embodiments the thickener and polyethylene glycol based crosslinkable network form a structure comprising two interpenetrating networks.