Provided are an ink composition for writing instruments which has a good solubility of a coloring material in an ink solvent and which is less liable to cause bleeding and feathering on the written lines and is improved in a water resistance, and a coloring material used for preparing the above ink composition. The coloring material includes a material obtained by adding at least one selected from a leuco dye, a halochromic dye and a photochromic compound to a compound represented by the following Formula (I): ##STR00001##
The ink composition for writing instruments is characterized by containing the coloring material described above.

Provided are an ink composition for writing instruments which has a good solubility of a coloring material in an ink solvent and which is less liable to cause bleeding and feathering on the written lines and is improved in a water resistance, and a coloring material used for preparing the above ink composition. The coloring material includes a material obtained by adding at least one selected from a leuco dye, a halochromic dye and a photochromic compound to a compound represented by the following Formula (I): ##STR00001##
The ink composition for writing instruments is characterized by containing the coloring material described above.

A marking system comprises a substrate having a surface coated with a color-triggering developer and a deactivating ink composition; and a marking composition comprising at least one color precursor. At least one “non-color developing portion” of the surface is coated with both the color-triggering developer and the deactivating ink composition, and at least one “color-developing portion” of the surface is coated with the color-triggering developer and is not coated with the deactivating ink composition. Color development occurs at the color-developing portion(s) and does not occur at the non-color developing portion(s) upon application of the marking composition to the surface of the substrate.

A marking system comprises a substrate having a surface coated with a color-triggering developer and a deactivating ink composition; and a marking composition comprising at least one color precursor. At least one “non-color developing portion” of the surface is coated with both the color-triggering developer and the deactivating ink composition, and at least one “color-developing portion” of the surface is coated with the color-triggering developer and is not coated with the deactivating ink composition. Color development occurs at the color-developing portion(s) and does not occur at the non-color developing portion(s) upon application of the marking composition to the surface of the substrate.

An additive three-dimensional fabrication system includes voice control for user interaction. This voice-controlled interface can enable a variety of voice-controlled functions and operations, while supporting interactions specific to consumer-oriented fabrication processes.

An additive three-dimensional fabrication system includes voice control for user interaction. This voice-controlled interface can enable a variety of voice-controlled functions and operations, while supporting interactions specific to consumer-oriented fabrication processes.

An ink for forming a functional layer, which is used when any thin film layer among functional layers consisting of a plurality of thin film layers is formed, includes a functional layer forming material and a solvent for dissolving the functional layer forming material, and in which the number of particles of 0.5 μm or more is 7 or less in 10 ml of the ink for forming a functional layer.

An ink for forming a functional layer, which is used when any thin film layer among functional layers consisting of a plurality of thin film layers is formed, includes a functional layer forming material and a solvent for dissolving the functional layer forming material, and in which the number of particles of 0.5 μm or more is 7 or less in 10 ml of the ink for forming a functional layer.

A putty paint compound for marking on a substrate, and a method and system of manufacturing a putty paint compound for marking on a substrate, are provided. In embodiments, the putty paint compound has a putty-like consistency that provides a delivery system for dye. In embodiments, a dye is dispersed into an elastic, pliable compound that maintains a putty-like form. When the compound is applied to a substrate having an activator, the dye dispersed in the compound creates a marking on the substrate that corresponds to the shape of the compound contacting the substrate. In further embodiments, the shape of the putty paint compound may be manipulated to provide a desired marking on a substrate, which may be altered by repeated or varied applications of one or more putty paint compounds.

A putty paint compound for marking on a substrate, and a method and system of manufacturing a putty paint compound for marking on a substrate, are provided. In embodiments, the putty paint compound has a putty-like consistency that provides a delivery system for dye. In embodiments, a dye is dispersed into an elastic, pliable compound that maintains a putty-like form. When the compound is applied to a substrate having an activator, the dye dispersed in the compound creates a marking on the substrate that corresponds to the shape of the compound contacting the substrate. In further embodiments, the shape of the putty paint compound may be manipulated to provide a desired marking on a substrate, which may be altered by repeated or varied applications of one or more putty paint compounds.