Konica Minolta Business Technologies, Inc.

Konica Minolta Business Corporation, Inc.

Natsuko Kusaka

Hiroyuki Yasukawa

Kenji Hayashi

Mikio Kouyama

Hiroaki Obata

Naohiro Hirose

Tomoko Sakimura

Tatsuya Fujisaki

Tatsuya Nagase

Shinya Obara

Miyuki Murakami

Kaori Soeda

Yohei Ohno

Provided is a toner for an electrostatic charge image development having toner particles which contain: a binder resin; a colorant; and a compound represented by Formula (1) in an amount of 0.1 to 65 ppm based on the total weight of the toner particles: 

Toner for electrostatic charge image development and method for producing the same

Provided is a toner comprising toner particles containing a binder resin and coloring matters, wherein the coloring matters comprise a dye represented by Formula (X-1), a metal compound represented by Formula (1) and a quinacridone pigment represented by Formula (2): 

Electrophotographic toner

A cyan ink for inkjet recording comprising at least one of a phthalocyanine compound represented by Formula (1) and a phthalocyanine compound represented by Formula (2), Z being represented by Formula (3): 

Cyan ink for inkjet recording

A magenta toner for developing an electrostatic image, the magenta toner comprising at least a binder resin and a magenta colorant, wherein the magenta colorant comprises a compound represented by Formula (1), wherein D is represented by one of Formulas (2) to (4): 

Magenta toner for developing electrostatic image

An electrostatic image developing toner which is capable of obtaining highly chromatic full-color images of bright color without causing perceived color contamination and exhibits superior lightfastness is disclosed, wherein the toner comprises a binding resin and a colorant, and the colorant is tetraazaporphyrin or phthalocyanine compounds such as a compound represented by the following formula: 

Electrostatic image developing toner

Provided is a method for forming an image with a set of electrostatic charge image developing toners using a digital electrophotographic method, provided that the set of electrostatic charge image developing toners comprises a black toner and a light gray toner, the method comprising the steps of: forming an electrostatic latent image on an image support; developing the electrostatic latent image with the black toner to form a black toner image; developing the electrostatic latent image with the light gray toner to form a light gray toner image; and fixing the black toner image and the light gray toner image, wherein the black toner and the light gray toner each independently contains a wax having an endothermic peak in the range of 60 to 105&#xb0; C.; and the light gray toner has a transmittance in the range of 40 to 90%.

Image forming method

Disclosed is a process of forming a full color image according to electrophotography, employing a yellow toner, a magenta toner and a cyan colorant, the process comprising the step of forming a yellow toner image, a magenta toner image and a cyan toner image on a recording material, wherein the yellow toner image has reflectance (in terms of %) satisfying formulas (11) through (14) below, the magenta toner image has reflectance (in terms of %) satisfying formulas (21) through (24) below, and the cyan toner image has reflectance (in terms of %) satisfying formulas (31) through (34) below.2&#x2266;&#x2266;24&#x2003;&#x2003;Formula (11)20&#x2266;&#x2266;40&#x2003;&#x2003;Formula (12)2&#x2266;&#x2266;16 and&#x2003;&#x2003;Formula (13)70&#x2266;&#x2003;&#x2003;Formula (14)30&#x2266;&#x2266;85&#x2003;&#x2003;Formula (21)1&#x2266;&#x2266;25&#x2003;&#x2003;Formula (22)2&#x2266;&#x2266;50 and&#x2003;&#x2003;Formula (23)80&#x2266;&#x2003;&#x2003;Formula (24)4&#x2266;||&#x2266;16&#x2003;&#x2003;Formula (31)15&#x2266;&#x2266;35 and&#x2003;&#x2003;Formula (32)20&#x2266;&#x2266;50&#x2003;&#x2003;Formula (33)0&#x2266;&#x2266;30&#x2003;&#x2003;Formula (34)

Full color image formation process

Disclosed is a toner comprising a resin and a colorant, wherein the colorant comprises a compound represented by formula (I) and a compound represented by formula (II).  

Toner

A magenta toner for developing an electrostatic image composed of a binder and a colorant is disclosed. The toner contains a tone controlling agent having a peak of fluorescent spectrum from 380 to 500 nm. An image excellent in light fastness and durability can be obtained and high color reproducibility with sufficient transparency and chromaticness can be realized by the magenta toner.

An electrophotographic toner containing a resin and a colorant is disclosed. The colorant is represented by the formula in the formula, Mis a silicon atom (Si), a germanium atom (Ge) and a tin atom (Sn); Z is independently a chlorine atom, a hydroxy group, an alkoxy group having 1 to 8 carbon atoms, or an aryloxy group having 6 to 8 carbon atoms; and A, A, Aand Aare each independently an atomic group defined in the specification.

Toner for developing electrostatic latent image

Disclosed is a magenta toner, which contains magenta colorants composed of compound A represented by Formulas (1), (2) or (3) in an amount of mA and compound B selected from a group consisting of a mono-azo pigment, a naphthol pigment and rhodamine chelate pigment in an amount of mA, and a ratio of amount mA:mB is 90:10 to 55:45. are described in the specification.

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Tokyo, Japan

Natsuko Kusaka