Orient Chemical Industries, Ltd.

Orient Chemical Industries Co., Ltd.

Orient Chemicals Industries, Lt.

Masashi Yasumatsu

Shun-ichiro Yamanaka

Kazuaki Sukata

Shuji Sugawara

Tohru Tsuruhara

Kaori Sato

Osamu Yamate

Kazuyoshi Kuroda

Akihiro Tada

Jun Hikata

Heihachi Yushina

Kaori Inoue

Satoko Ozaki

Toshihiro Urakawa

Here is provided a charge control resin which is prompt in charge rising up, excellent in electrostatic charging propensity and easy in manufacturing. This charge control resin contains a polymer as an active ingredient having a constituent unit represented by following Formula (1) in the Formula (1), Ris independent of one another, and is a hydrogen atom, a hydroxyl group, a halogen atom, a carboxy-containing group, a straight-chained or branched alkyl group having 1-18 carbon atoms, or a straight-chained or branched alkoxy group having 1-18 carbon atoms; Ris a hydrogen atom, a hydroxyl group, a halogen atom, a carboxy-containing group, a straight-chained or branched alkyl group having 1-18 carbon atoms, or a straight-chained or branched alkoxy group having 1-18 carbon atoms; g is a number of 1-3; h is a number of 1-3; and M is a hydrogen atom, an alkali metal, a straight-chained or branched alkyl group having 1-18 carbon atoms, an ammonium radical or a mixture of any of these.

Charge control resin and manufacturing method of the same

A method for manufacturing a charge control agent comprising steps of: (in the chemical formula [1], &#x2014;Ar&#x2014; and &#x2014;Ar&#x2014; are aromatic groups) and a metal chelating agent to prepare an azo-type metal complex salt intermediate; (in the chemical formula [2], &#x2014;Ar&#x2014; and &#x2014;Ar&#x2014; are the same as the chemical formula [1]; M is a trivalent metal; Bis a cation except an ammonium ion; n is from 0.70 to 1.00).

Method for manufacturing charge control agent

A toner for developing an electrostatic image comprises a binding resin for a toner and a charge control agent including an azo-type iron complex salt represented by the following chemical formula (1) (in the chemical formula (1), Rand Rare the same or different to each other and are an alkyl group having a straight chain or a branch chain of 3 to 8 carbons; R, R, Rand Rare the same or different to each other and are selected from the group consisting of a hydrogen atom, an alkyl group, an alkoxyl group, a halogen atom, a nitro group and a carboxyl group; Aindicates m(H)+n(K)+p(Na), which m, n and p satisfy numerical equations of m+n+p=1, 0.7&#x2266;m&#x2266;1, 0&#x2266;n&#x2266;0.3 and 0&#x2266;p&#x2266;0.3), wherein an average particle size thereof is 1 to 4 microns, and a specific volume resistivity thereof is ranging from 0.2&#xd7;10to 7&#xd7;10&#x3a9;&#xb7;cm.

Toner for developing electrostatic image and image formation process using it

A positive electrified charge control agent comprising a silicon complex compound of an effective component represented by the following chemical formula (I) and/or chemical formula (II) (in the formula (I) and formula (II), [D-(SO)]is a bivalent anion of an organic acid having at least two sulfonic acid groups, p is 0 or 1, B is a bonding line when p is 0, B is a carbon atom or a nitrogen atom when p is 1, J is a carbon atom or a nitrogen atom, A is an organic group which forms a ring with (B)and J, both of R are same or different to each other and are an organic group, and these both of R are independent or form a heterocyclic ring). A positive electrified toner for developing an electrostatic image comprises the positive electrified charge control agent. A charge control method of the positive electrified toner for developing the electrostatic image comprises a step for making the toner positively electrified by friction.

Positive electrified charge control agent and positive electrified toner for developing electrostatic image

The charge control agent comprises aggregate particles including an azo-type iron complex salt represented by the following chemical formula [VI] (in the chemical formula [VI], Bis (H)(Na)and x is mole ratio and 0.6 to 0.9, or Bis (H)(Na)and y is mole ratio and 0 to 0.2) and the aggregate particles have 0.5 to 5.0 microns of an average particle size. A toner for developing an electrostatic image comprises a resin for the toner and the charge control agent. An image formation process of electrophotography comprises a step for developing an electrostatic latent image on an electrostatic latent image frame by a developer including the toner.

Electric charge controlling agent, toner for developing electrostatic charge image containing the same, and method for forming image using the toner

A charge control agent comprises a monoazo metals-compound including a monoazo compound represented by the following formula [I]: and metals of a metallic element or a metalloid coordinating to the monoazo compound. A toner for developing an electrostatic image comprises: the charge control agent including the monoazo compound and metals of the metallic element or the metalloid coordinating to the monoazo compound, a resin for the toner and a colorant.

Charge control agent and toner for electrostatic image development containing the same

A charge control agent of the present invention comprises aggregate particles of an azo-type iron complex salt represented by the following chemical formula [I] in the chemical formula [I], R&#x2014;, R&#x2014;, R&#x2014;, R&#x2014;, R&#x2014; and R&#x2014; are same or different to each other, n is 0.7 to 0.99,the aggregate particles have an average particle size of 1 to 4 microns and an average particle size of a primary particulate crystalline, that is fined the aggregate particles with ultrasonic irradiation, is at most 3 microns. A toner for developing an electrostatic image comprises a resin for the toner and the charge control agent.

Charge control agent and toner for electrostatic image development

Process for preparing a monoazo metal complex salt compound for charge control agent and toner for developing electrostatic images

Charge control agent, manufacturing process therefor and toner

Monoazo metal compound of formula [I] which is excellent in charge control or charge-enhancing property, and toner for developing electrostatic images and powdery paint for electrostatic painting incorporating thereof:

Monoazo metal compound, composition thereof, charge control agent, toner

Metal compound of formula [I] which is excellent in charge control or charge-enhancing property, and toner for developing electrostatic images and powdery paint for electrostatic painting incorporating thereof: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represent a hydrogen, a linear or branched alkyl group, or a linear or branched unsaturated alkyl group; R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, and R.sup.3 and R.sup.4 may bind together to form an aromatic or aliphatic ring which may have one or more substituents of a linear or branched alkyl group, or a linear or branched unsaturated alkyl group; M represents a metal; m represents an integer of 3 or more; n represents an integer of 2 or more.

Metal compound of aromatic hydroxycarboxylic acid, charge control agent,

Monoazo metal compound of formula �I! which is excellent in charge control or charge-enhancing property, and toner for developing electrostatic images and powdery paint for electrostatic painting incorporating thereof:

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Neyagawa, Japan

Masashi Yasumatsu