Canon Kabushiki Kaisha

Yuko Katsumoto

Taichi Shintou

Takeshi Miyazaki

Koromo Shirota

Takeshi Sekiguchi

Shosei Mori

Takayuki Ujifusa

Tomoyuki Noda

Tsuyoshi Santo

Hajime Muta

Akiko Kitao

Masao Nakano

Masahiro Suenaga

An object of the present invention is to provide a thermal transfer recording sheet that provides an image that is excellent in light fastness and has a satisfactory imbalance. The present invention relates to a thermal transfer recording sheet including a substrate and dye layers (a yellow dye layer, a magenta dye layer, and a cyan dye layer), in which one or more kinds of the dye layers each contain one or more kinds of specific compounds. The present invention also relates to a thermal transfer recording sheet including a substrate, dye layers, and a protective layer for protecting the surface of an image, in which the protective layer contains one or more kinds of specific compounds.

Thermal transfer recording sheet

In a thermal transfer recording sheet including a base material and a colorant layer, the colorant layer includes a yellow dye layer containing a yellow dye, a magenta dye layer containing a magenta dye, and a cyan dye layer containing a cyan dye, and the cyan dye includes a compound represented by Formula (1a) or Formula (1b): where Rto Rare substituents, Xis an anion, and the compound of Formula (1b) has at least one anionic substituent.

A thermal transfer recording sheet includes a base material and, on the base material, a yellow-dye layer containing a yellow dye, a magenta-dye layer containing a magenta dye, and a cyan-dye layer containing a cyan dye. The yellow dye and the cyan dye contain compounds having specific structures.

Coloring compound and thermal transfer recording sheet

A thermal transfer recording sheet set includes an image-receiving sheet that includes an image-receiving layer containing a compound represented by general formula (1) or (2) and an ink sheet that includes a yellow coloring material layer containing a particular dye and a cyan coloring material layer containing a particular dye.

Thermal transfer recording sheet set and image forming method

The present invention provides a compound having a high chroma and also excellent dispersibility. The compound described above is represented by the following formula (1). 

Compound, ink, resist composition for color filter, thermal transfer recording sheet, and toner

An object of the present invention is to provide a thermal transfer recording sheet that enables images having a wide color gamut, a high chroma, and good lightfastness, in which the degree of catalytic fading is reduced, to be formed. The thermal transfer recording sheet includes a base material and a colorant layer on the base material. The colorant layer includes a yellow dye layer, a magenta dye layer, and a cyan dye layer. The dye layers each include, as a dye, a compound having a specific structure.

Provided is a pigment dispersion excellent in the dispersibility of C.I. Pigment yellow 185. The pigment dispersion includes C.I. Pigment yellow 185 and a compound represented by the following formula (1), which are dispersed in a dispersing medium: 

Pigment dispersion and yellow resist composition for color filter and ink composition containing the pigment dispersion

An object of the present invention is to provide a thermal transfer recording sheet that enables high-chroma images to be formed, has a high color-developability that enables a wide color gamut to be achieved, and enables high-quality black images to be formed using process black. The thermal transfer recording sheet includes a base material, and a yellow dye layer including a yellow dye, a magenta dye layer including a magenta dye, and a cyan dye layer including a cyan dye that are disposed on the base material. The magenta dye, yellow dye, and cyan dye each contain specific compounds.

The present invention provides a water-insoluble coloring compound having a high solvent solubility, showing increased brightness and saturation, and being useful for increasing the green gamut and also provides an ink containing the water-insoluble coloring compound. The present invention provides a thermal transfer recording sheet including a coloring material layer formed on a base material from the ink and also provides a color filter resist composition showing an increased green gamut due to the ink.

Water-insoluble coloring compound, ink, thermal transfer recording sheet, and color filter resist composition

The present invention provides a water-insoluble coloring compound having excellent light resistance, an ink containing the coloring compound, a thermal transfer recording sheet including a coloring material layer formed on a base material from the ink, and a color filter resist composition containing the ink.

A yellow toner is provided which is superior in dispersibility of C. I. pigment yellow 185, has a high color development property, and is superior in light resistance. The yellow toner has toner particles containing at least a binder resin, a wax, and a colorant, wherein the yellow toner contains C.I. pigment yellow 185 and a compound represented by the general formula (1) as the colorant: 

Yellow toner and process for producing the yellow toner

The present invention provides a yellow toner having high compatibility of a colorant with a binder resin, having good chroma, and being useful for broadening the green color gamut. The yellow toner contains the binder resin and the colorant, wherein the colorant contains a compound represented by the general formula (1). 

Yellow toner

The toner includes toner base particles, each of which contains a binder resin, a wax and a coloring agent, and a coloring matter compound represented by the general formula (1) is contained as the coloring agent. 

Toner

The present invention provides a toner excellent in light resistance. The toner includes toner base particles, each of which contains a binder resin, a wax and a coloring agent, and a coloring matter compound represented by the general formula (1) is contained as the coloring agent. wherein Rand Reach independently represent an alkyl group or an acyl group, or Rand Rmay be bonded to each other so as to form a cyclic organic functional group containing, as a hetero atom, a nitrogen atom to which Rand Rare bonded; Rand Reach independently represent an alkyl group; Rand Reach independently represent an alkyl group or an alkoxy group; Rrepresents a hydrogen atom, an alkyl group or an alkoxy group; and Rrepresents an alkyl group.

The coloring matter compound is represented by the following general formula (1): wherein R, R, Rrepresent an alkyl group; Rto Rrepresent an alkyl group, or satisfy either of the following conditions i) and ii): i) Rand Rare bonded to each other, so as to form a cyclic organic functional group containing R, Rand a carbon atom bonded to Rand R, and Rrepresents an alkyl group; ii) Rto Rare bonded to one another, so as to form a cyclic organic functional group containing R, R, Rand a carbon atom bonded to Rto R; and R, Rrepresent an alkyl group or an acyl group, or Rand Rare bonded to each other, so as to form a cyclic organic functional group containing R, Rand a nitrogen atom bonded simultaneously to Rand R.

Growing community of inventors

Yokohama, Japan

Yuko Katsumoto