Canon Kabushiki Kaisha

Akiko Kitao

Takeshi Miyazaki

Taichi Shintou

Yuko Katsumoto

Koichi Suzuki

Ryuji Higashi

Taiki Watanabe

Ai Hayakawa

Yuma Kobayashi

Takeshi Sekiguchi

Taiko Motoi

Ryoji Fujiwara

Eiji Ozaki

The modified graphene includes a structure represented by the following formula (I), wherein the modified graphene has a ratio (g/d) of an intensity 'g' of a G band to an intensity “d” of a D band of 1.0 or more in a Raman spectroscopy spectrum thereof:Gr1-Ar1-X1-(Y1)  (I)in the formula (I), Gr1 represents a single-layer graphene or a multilayer graphene, Ar1 represents an arylene group having 6 to 18 carbon atoms, X1 represents a single bond, a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms, or a group obtained by substituting at least one carbon atom in a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms with at least one structure selected from the group consisting of —O—, —NH—, —CO—, —COO—, —CONH—, and an arylene group.

Modified graphene, method of producing modified graphene, modified graphene-resin composite, modified graphene sheet, and modified graphene dispersion

A heat sensitive transfer sheet that achieves high optical density and high light resistance without generating scumming. The heat sensitive sheet has a base material and a coloring material layer formed on the base material, and the coloring material layer includes a compound represented by the following formula (1) and a particular dye compound: whereinRand Reach independently represent a hydrogen atom, an alkyl group, an aralkyl group, an unsubstituted aryl group or an aryl group having a substituent; andRand Rto Reach independently represent a hydrogen atom or an alkyl group.

Heat sensitive transfer recording sheet

The modified graphene includes a structure represented by the following formula (I), wherein the modified graphene has a ratio (g/d) of an intensity 'g' of a G band to an intensity 'd' of a D band of 1.0 or more in a Raman spectroscopy spectrum thereof:Gr1-Ar1-X1-(Y1)&#x2003;&#x2003;(I)in the formula (I), Gr1 represents a single-layer graphene or a multilayer graphene, Ar1 represents an arylene group having 6 to 18 carbon atoms, X1 represents a single bond, a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms, or a group obtained by substituting at least one carbon atom in a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms with at least one structure selected from the group consisting of &#x2014;O&#x2014;, &#x2014;NH&#x2014;, &#x2014;CO&#x2014;, &#x2014;COO&#x2014;, &#x2014;CONH&#x2014;, and an arylene group.

A pigment dispersion has low viscosity and good dispersion property without depending on pigment species. The pigment dispersion contains a dispersion medium, an organic pigment, and a triazo compound having a specific structure.

Pigment dispersion, method for manufacturing toner, aqueous ink, and triazo compound

This invention aims at providing a compound capable of providing a toner having high covering power and a toner having high covering power, which is achieved by an azamethine acetyl amide-based compound having a specific structure.

Coloring compound and toner

The present invention provides a toner that exhibits an excellent chromogenicity and provides a method of producing a toner that has an excellent particle size distribution and an excellent chromogenicity, in which a toner containing a binder resin and a colorant that contains a coloring compound with general formula (1), and a method of producing this toner. 

Toner and method of producing 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.

Coloring matter compound, ink, resist composition for color filter, and heat-sensitive transfer recording sheet

The coloring matter compound is represented by the following general formula (1): 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 present invention provides a toner having superior color development property and a method of producing a toner having favorable particle size distribution and color development property, in which the toner containing a binder resin and a colorant that contains a phthalocyanine pigment represented by general formula (1), and the method for producing the toner. 

Toner and toner production method

An electron-emitting device includes an electron-emitting film containing molybdenum. A spectrum obtained by measuring a surface of the electron-emitting film by X-ray photoelectron spectroscopy has a first peak having a peak top in the range of 229&#xb1;0.5 eV and a sub peak having a peak top in the range of 228.1&#xb1;0.3 eV.

Growing community of inventors

Kawasaki, Japan

Akiko Kitao