Provided is an aqueous ink that excels in a hue as a yellow ink, and capable of recording an image that excels both in color developability and light fastness. The aqueous ink is an ink for inkjet, containing a first coloring material and a second coloring material. The first coloring material is a compound represented by general formula (1), and the second coloring material is a compound represented by general formula (2). ##STR00001##

Provided are a compound represented by the following general formula (1) ##STR00001##
and a liquid crystal composition containing the compound, and a liquid crystal display device or a light control device having the liquid crystal composition. The compound represented by general formula (1) has both a large dichroic ratio and high solubility in the host liquid crystal. In addition, it has excellent chemical stability at a level usable as a device. Therefore, by using the compound represented by general formula (1) as a component of a GH-type liquid crystal composition, it is possible to provide a liquid crystal display device or a light control device with high contrast.

An ink set includes a pigment ink, containing a pigment, and a dye ink containing the compound represented by formula (y-1) below or a salt thereof. ##STR00001##

This invention relates to a process for the preparation of a dispersion comprising coloured or black particles, such coloured or black particles prepared by the process, the use of the dispersion and the coloured or black particles in electrophoretic fluids, and electrophoretic display devices comprising such fluids.

The present invention provides C.I. Pigment Yellow 155 having a methanol wettability (MW value) of the pigment powder of 10% to 2%, each inclusive.

Problem to be Solved

It is intended to provide a yellow colorant composition having improved chroma and lightness, a pigment composition therefor, and use thereof for forming images.

Solution

The present invention provides a colorant composition containing a yellow pigment, a yellow fluorescent dye, and a resin binder, wherein the maximum reflectance wavelength in the visible reflection spectrum of a coating film consisting of the fluorescent dye and the resin binder without comprising the yellow pigment falls within the range of 490 to 535 nm, and the maximum reflectance of the coating film is 90 to 140%.

A polarizing film includes a hydrophobic polymer and a dichroic dye, wherein the hydrophobic polymer includes a polypropylene polymer including about 0.5 mol % or less of an ethylene content (mol %), and has a distribution of a molecular weight of about 1 to about 5.

This invention relates to a process for the preparation of a dispersion comprising coloured or black particles, such coloured or black particles prepared by the process, the use of the dispersion and the coloured or black particles in electrophoretic fluids, and electrophoretic display devices comprising such fluids.

Provided are a compound represented by the following general formula (1)

##STR00001##

and a liquid crystal composition containing the compound, and a liquid crystal display device or a light control device having the liquid crystal composition. The compound represented by general formula (1) has both a large dichroic ratio and high solubility in the host liquid crystal. In addition, it has excellent chemical stability at a level usable as a device. Therefore, by using the compound represented by general formula (1) as a component of a GH-type liquid crystal composition, it is possible to provide a liquid crystal display device or a light control device with high contrast.

Provided is an aqueous ink that excels in a hue as a yellow ink, and capable of recording an image that excels both in color developability and light fastness. The aqueous ink is an ink for inkjet, containing a first coloring material and a second coloring material. The first coloring material is a compound represented by general formula (1), and the second coloring material is a compound represented by general formula (2).

##STR00001##