Abstract: A laser-transmissible composition comprises: a dynamic crosslinking polyolefin thermoplastic elastomer that has a melting point ranging from 160 to 210 degrees Centigrade in case of non-coloring, and dye salt exhibiting transmission of a laser having a wavelength of 800 to 1200 nm. A method for laser welding comprises: putting a laser-transmissible molded workpiece 1 made from the laser-transmissible composition onto a laser-absorptive molded workpiece 2 having a laser-absorbent 7, irradiating laser 3 towards the laser-transmissible molded workpiece 1 to weld the laser-transmissible molded workpiece 1 and the laser-absorptive molded workpiece 2.

Abstract: A triarylamine dimer derivative is represented by the following chemical formula [1] (in the chemical formula [1]: —Ar1, —Ar2, —Ar3 and —Ar4 are aryl groups being to have a substitutional group respectively, —R1 and —R2 are same or different to each other and one thereof is selected from the group consisting of a hydrogen atom, an alkyl group, an alkoxyl group and a halogen atom; m and n are from 0 to 4; and with a proviso that —Ar1 and —Ar2, —Ar3 and —Ar4 are being to bind respectively to compose a cyclic structure group having a nitrogen atom) having an amorphous phase indicated by spectrum of powder X-ray diffractometry.

Abstract: A toner for electrostatic image development comprises components of a charge control agent, a binding resin, and colorant. The charge control agent is an aromatic-oxy-carboxylic acid iron-including compound. The toner has its particle size distribution with: a volume-average particle diameter (D50) ranging from 5 to 13 microns that is determined by a cumulative 50% volume particle diameter from a largest particle diameter, and a degree of particle size dispersion (D25/D75) ranging from 1.20 to 1.50 that is calculated by a cumulative 25% volume particle diameter (D25) and a cumulative 75% volume particle diameter (D75) as same as the above determined D50.

Abstract: A method for manufacturing a charge control agent comprising steps of: an initiative chelating step by reacting with a monoazo compound represented by the following chemical formula [1] (in the chemical formula [1], —Ar1— and —Ar2— are aromatic groups) and a metal chelating agent to prepare an azo-type metal complex salt intermediate; a subsequent ion-exchanging step by reacting with the azo-type metal complex salt intermediate and an ammonium counter ion forming agent including an inorganic ammonium salt and aqueous ammonia to prepare an azo-type metal complex salt having an ammonium ion of a counter ion represented by the following chemical formula [2] (in the chemical formula [2], —Ar1— and —Ar2 are the same as the chemical formula [1]; M is a trivalent metal; B+ is a cation except an ammonium ion; n is from 0.70 to 1.00).

Abstract: A laser-transmissible colored resin composition comprises an anthraquinone-type acidic dye represented by the following chemical formula (1) [in the chemical formula (1), —R1 is a hydrogen atom, a hydroxyl group or an amino group, —R2 and —R3 are a hydrogen atom, an alkyl group, a halogen atom, an alkoxyl group or —SO3M which M is a hydrogen atom, an alkaline metal or an ammonium, —R4, —R5, —R6, —R7— and —R8 are a hydrogen atom, an alkyl group, an acyl group, an acylamide group, an acyl-N-alkylamide group, a halogen atom, an alkoxyl group or —SO3M which M is same above, and at least one of —R2, —R3, —R4, —R5, —R6, —R7 and —R8 is —SO3M]. It may be represented by the following chemical formula (2).

Abstract: A luminous organic compound is represented by following formula (1). The luminous organic compound has sufficient solubility into the ink, fastness, light-resistance, luminous efficacy or brightness, and excellent mechanical durability, chemical durability and luminescent ability.