JPH05297638A - Negatively charging electrophotographic toner - Google Patents

Negatively charging electrophotographic toner

Info

Publication number
JPH05297638A
JPH05297638A JP4127953A JP12795392A JPH05297638A JP H05297638 A JPH05297638 A JP H05297638A JP 4127953 A JP4127953 A JP 4127953A JP 12795392 A JP12795392 A JP 12795392A JP H05297638 A JPH05297638 A JP H05297638A
Authority
JP
Japan
Prior art keywords
toner
group
formula
groups
compound
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4127953A
Other languages
Japanese (ja)
Inventor
Osamu Mukushiro
修 椋代
Yuji Matsuura
裕司 松浦
Miki Sugano
美樹 菅野
Mitsutoshi Anzai
光利 安西
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hodogaya Chemical Co Ltd
Original Assignee
Hodogaya Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hodogaya Chemical Co Ltd filed Critical Hodogaya Chemical Co Ltd
Priority to JP4127953A priority Critical patent/JPH05297638A/en
Priority to US08/010,574 priority patent/US5378573A/en
Priority to DE69310610T priority patent/DE69310610T2/en
Priority to EP93102253A priority patent/EP0566835B1/en
Publication of JPH05297638A publication Critical patent/JPH05297638A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a negatively charging toner having good stability, good dispersibility and good tridoelectrification property by using a specified compd. as a charge controlling agent. CONSTITUTION:The compd. expressed by formula I is incorporated into the toner. In the formula I, X and Y are independently hydrogen atom, and compd. expressed by formula II, etc., but both of X and Y are not simultaneously hydrogen atoms and Z is hydrogen atom, alkyl group, or aryl group. In the formula II, D is an electron donative group, R1 and R2 are hydrogen atoms, halogen atoms, alkyl groups, cycloalkyl groups, aralkyl groups, aryl groups, acyl groups, cyano groups, or nitro groups. Namely, the toner consists essentially of a binder resin, coloring agent and the compd. expressed by the formula I. This toner is obtd. by kneading the mixture in a heater mixer while the binder resin is molten, and then cooling, pulverizing and classifying.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、特定の化合物を含有す
る負帯電性の電子写真用トナーに関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a negatively chargeable electrophotographic toner containing a specific compound.

【0002】[0002]

【従来の技術】電子写真方式による画像形成プロセスで
は、セレン、セレン合金、硫化カドミウム、アモルファ
スシリコン等の無機感光体や、電荷発生剤と電荷輸送剤
を用いた有機感光体に静電潜像を形成し、これをトナー
により現像、紙やプラスチックフィルムに転写、定着し
て可視画像を得る。
2. Description of the Related Art In an electrophotographic image forming process, an electrostatic latent image is formed on an inorganic photoreceptor such as selenium, selenium alloy, cadmium sulfide, or amorphous silicon, or an organic photoreceptor using a charge generating agent and a charge transporting agent. After being formed, this is developed with toner, transferred onto paper or a plastic film, and fixed to obtain a visible image.

【0003】感光体には、その構成により正帯電性と負
帯電性が有り、露光により印字部を静電潜像として残す
場合は逆符号帯電性トナーにより現像し、一方、印字部
を除電して反転現像を行なう場合は同符号帯電性トナー
により現像する。トナーはバインダー樹脂と着色剤及び
その他添加剤により構成されるが、望ましい摩擦帯電特
性(帯電速度、帯電レベル、帯電安定性等)や経時安定
性、環境安定性を付与するため、一般に電荷制御剤が使
用される。この電荷制御剤によりトナーの特性は大きく
影響を受ける。
The photosensitive member has a positive charging property and a negative charging property depending on its configuration. When the printed portion is left as an electrostatic latent image by exposure, it is developed with a toner of opposite sign charging, while the printed portion is discharged. When reversal development is carried out, the development is carried out with a toner having the same sign. A toner is composed of a binder resin, a colorant and other additives, but is generally a charge control agent in order to impart desirable triboelectrification characteristics (charging speed, charging level, charging stability, etc.), temporal stability and environmental stability Is used. The characteristics of the toner are greatly affected by this charge control agent.

【0004】正帯電性感光体を用いて逆符号帯電性トナ
ーで現像する場合、及び負帯電性感光体を用いて反転現
像する場合には負帯電性トナーが使用され、この場合に
は負帯電性電荷制御剤が使用されている。
Negative charging toner is used in the case of developing with the opposite sign charging toner using the positive charging photoreceptor and in the case of reversal development using the negative charging photoreceptor, in which case negative charging is used. A sex charge control agent is used.

【0005】更にカラートナーの場合においては、色相
に影響を与えない淡色、望ましくは無色の電荷制御剤が
必要である。これら淡色、あるいは無色の電荷制御剤と
しては、例えば、特公昭55−42752、特開昭61
−69073、特開昭61−221756号公報等に記
載されたヒドロキシ安息香酸誘導体の金属錯塩化合物、
特開昭57−111541号公報等に記載された芳香族
ジカルボン酸金属塩化合物、特開昭61−14145
3、特開昭62−94856号公報等に記載されたアン
トラニル酸誘導体の金属錯塩化合物、USP−4767
688、特開平1−306861号公報等に記載された
有機ホウ素化合物、及び特開昭61−3149号公報に
記載されたビフェノール化合物等がある。
Further, in the case of a color toner, a light color, preferably colorless charge control agent which does not affect the hue is required. Examples of these light-colored or colorless charge control agents include, for example, JP-B-55-42752 and JP-A-61-61.
-69073, a metal complex salt compound of a hydroxybenzoic acid derivative described in JP-A-61-221756, etc.,
Aromatic dicarboxylic acid metal salt compounds described in JP-A-57-111441, JP-A-61-114545
3, metal complex salt compounds of anthranilic acid derivatives described in JP-A-62-94856, USP-4767.
688, organic boron compounds described in JP-A-1-306861 and the like, and biphenol compounds described in JP-A-61-3149.

【0006】しかしながら、これらの電荷制御剤は環境
問題の懸念されるクロム化合物であったり、完全に無色
になり得ない物であったり、又は、帯電付与効果が低
い、逆帯電トナーが多い、あるいは分散性や化合物の安
定性に乏しい等の欠点があり、帯電制御剤として満足す
る性能を有すものはなかった。
However, these charge control agents are chromium compounds which may cause environmental problems, may not be completely colorless, or may have a low charge imparting effect or may have a large amount of reversely charged toner. There are drawbacks such as poor dispersibility and poor compound stability, and none of them have satisfactory performance as a charge control agent.

【0007】[0007]

【発明が解決しようとする課題】本発明は、化合物の安
定性が良く、バインダー樹脂に対する分散性が良好であ
り、トナー製造時の劣化がなく、さまざまな環境条件下
でも、摩擦による帯電特性が良好で、高画質の画像を常
に安定して与えるトナーを提供するものである。
SUMMARY OF THE INVENTION According to the present invention, the stability of the compound is good, the dispersibility in the binder resin is good, there is no deterioration at the time of toner production, and the charging property due to friction is maintained even under various environmental conditions. The present invention provides a toner that always gives a good and high-quality image in a stable manner.

【0008】[0008]

【課題を解決するための手段】本発明者らは、バインダ
ー樹脂との分散性が良好で、トナーに良好な帯電特性を
付与することができる無色の安定な化合物を見出し、こ
れを電荷制御剤として使用する事により優れたトナーを
発明するに到った。
The present inventors have found a colorless stable compound which has good dispersibility with a binder resin and can impart good charging characteristics to a toner. The present invention has led to the invention of excellent toners.

【0009】すなわち、本発明は下記一般式(1)That is, the present invention is represented by the following general formula (1)

【0010】[0010]

【化5】 [Chemical 5]

【0011】〔式中X、及びYは各々独自に水素原子、[Wherein X and Y are each independently a hydrogen atom,

【化6】 (式中Dは電子供与性基を表し、R1 及びR2 は各々独
立に水素原子、ハロゲン原子、アルキル基、シクロアル
キル基、アラルキル基、アリール基、アシル基、シアノ
基、または、ニトロ基を表わす。)、
[Chemical 6] (Wherein D represents an electron-donating group, R 1 and R 2 are each independently a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, an acyl group, a cyano group, or a nitro group. ,),

【化7】 (式中、D及びR1 ,R2 は前記と同じ意味を表す。)
または、
[Chemical 7] (In the formula, D and R 1 and R 2 have the same meanings as described above.)
Or

【化8】 (式中、D及びR1 ,R2 は前記と同じ意味を表す。)
を表し、但しXとYは同時に水素ではなくZは水素原
子、アルキル基または、アリ−ル基を表す。〕で表され
る化合物を含有する事を特徴とする負帯電性電子写真用
トナーである。
[Chemical 8] (In the formula, D and R 1 and R 2 have the same meanings as described above.)
However, X and Y are not hydrogen at the same time, and Z is a hydrogen atom, an alkyl group or an aryl group. ] A negatively chargeable electrophotographic toner containing a compound represented by the following.

【0012】本発明は、基本的にバインダー樹脂と着色
剤及び本発明にかかる一般式(1)に示す化合物とによ
り構成されるが、本発明のトナーを製造する方法として
は、これらの混合物を加熱混合装置によりバインダー樹
脂の溶融下、混練し、冷却後、粗粉砕、微粉砕、分級し
て得る方法、これらの混合物を溶媒に溶解し、噴霧によ
り微粒化、乾燥し、分級して得る方法や懸濁させたモノ
マー粒子中に着色剤や一般式(1)で示す化合物を分散
させ、重合法により得る方法等がある。
The present invention basically comprises a binder resin, a colorant and a compound represented by the general formula (1) according to the present invention. As a method for producing the toner of the present invention, a mixture of these is used. Method of obtaining by kneading, cooling, coarsely pulverizing, finely pulverizing, and classifying after melting the binder resin by a heating and mixing device, dissolving these mixtures in a solvent, atomizing by spraying, drying, and classifying And a method in which the colorant or the compound represented by the general formula (1) is dispersed in the suspended monomer particles to obtain it by a polymerization method.

【0013】バインダー樹脂としては、ポリスチレン、
スチレン−メタクリル酸エステル共重合体、スチレン−
プロピレン共重合体、スチレン−ブタジエン共重合体、
アクリル樹脂、スチレン−マレイン酸共重合体、オレフ
ィン樹脂、ポリエステル、エポキシ樹脂、ポリウレタン
樹脂、ポリビニルブチラール等を単独又は、混合して使
用する事が出来る。
As the binder resin, polystyrene,
Styrene-methacrylic acid ester copolymer, styrene-
Propylene copolymer, styrene-butadiene copolymer,
Acrylic resins, styrene-maleic acid copolymers, olefin resins, polyesters, epoxy resins, polyurethane resins, polyvinyl butyral, etc. can be used alone or in combination.

【0014】又、着色剤としては、黒色トナー用には一
般的にカーボンブラックが使用されており、カラートナ
ー用には次のような着色剤が使用できる。イエロー着色
剤としては、CIピグメントイエロー1、CIピグメン
トイエロー5、CIピグメントイエロー12、CIピグ
メントイエロー17等のアゾ系有機顔料や黄土のような
無機顔料又はCIソルベントイエロー2、CIソルベン
トイエロー6、CIソルベントイエロー14、CIソル
ベントイエロー19等の油溶性染料等、マゼンタ着色剤
としては、CIピグメントレッド57、CIピグメント
レッド57:1等のアゾ顔料、CIピグメントバイオレ
ット1、CIピグメントレッド81等のキサンテン顔
料、CIピグメントレッド87、CIバットレッド1、
CIピグメントバイオレット38等のチオインジゴ顔料
又はCIソルベントレッド19、CIソルベントレッド
49、CIソルベントレッド52等の油溶性染料等シア
ン着色剤としては、CIピグメントブルー1等のトリフ
ェニルメタン顔料、CIピグメントブルー15、CIピ
グメントブルー17等のフタロシアニン顔料又はCIソ
ルベントブルー25、CIソルベントブルー40、CI
ソルベントブルー70等の油溶性染料等、それぞれ公知
の着色剤を使用する事ができる。
As a colorant, carbon black is generally used for black toners, and the following colorants can be used for color toners. Examples of yellow colorants include azo organic pigments such as CI Pigment Yellow 1, CI Pigment Yellow 5, CI Pigment Yellow 12, and CI Pigment Yellow 17, and inorganic pigments such as ocher or CI Solvent Yellow 2, CI Solvent Yellow 6, CI. Magenta colorants such as oil-soluble dyes such as Solvent Yellow 14 and CI Solvent Yellow 19 are azo pigments such as CI Pigment Red 57 and CI Pigment Red 57: 1, and xanthene pigments such as CI Pigment Violet 1 and CI Pigment Red 81. , CI Pigment Red 87, CI Butt Red 1,
Examples of cyan colorants such as thioindigo pigments such as CI Pigment Violet 38 or oil-soluble dyes such as CI Solvent Red 19, CI Solvent Red 49 and CI Solvent Red 52 include triphenylmethane pigments such as CI Pigment Blue 1 and CI Pigment Blue 15 Phthalocyanine pigments such as CI Pigment Blue 17 or CI Solvent Blue 25, CI Solvent Blue 40, CI
Known colorants such as oil-soluble dyes such as Solvent Blue 70 can be used.

【0015】電荷制御剤として使用できる本発明にかか
る化合物の電子供与性基としては、アルキル基、シクロ
アルキル基、アラルキル基、ヒドロキシル基、アルコキ
シ基、アミノ基、ジアルキルアミノ基、ジアラルキルア
ミノ基、ジアリ−ルアミノ基等である。
The electron-donating group of the compound according to the present invention which can be used as a charge control agent is an alkyl group, a cycloalkyl group, an aralkyl group, a hydroxyl group, an alkoxy group, an amino group, a dialkylamino group, a diaralkylamino group, And a diallylamino group.

【0016】電荷制御剤として使用できる本発明にかか
る化合物の具体的な例としては次のようなものが挙げら
れる。
Specific examples of the compound according to the present invention that can be used as the charge control agent include the following.

【0017】化合物No(1)Compound No. (1)

【化9】 [Chemical 9]

【0018】化合物No(2)Compound No. (2)

【化10】 [Chemical 10]

【0019】化合物No(3)Compound No (3)

【化11】 [Chemical 11]

【0020】化合物No(4)Compound No (4)

【化12】 [Chemical 12]

【0021】化合物No(5)Compound No. (5)

【化13】 [Chemical 13]

【0022】化合物No(6)Compound No. (6)

【化14】 [Chemical 14]

【0023】化合物No(7)Compound No. (7)

【化15】 [Chemical 15]

【0024】化合物No(8)Compound No. (8)

【化16】 [Chemical 16]

【0025】化合物No(9)Compound No. (9)

【化17】 [Chemical 17]

【0026】化合物No(10)Compound No. (10)

【化18】 [Chemical 18]

【0027】化合物No(11)Compound No. (11)

【化19】 [Chemical 19]

【0028】化合物No(12)Compound No. (12)

【化20】 [Chemical 20]

【0029】化合物No(13)Compound No (13)

【化21】 [Chemical 21]

【0030】化合物No(14)Compound No (14)

【化22】 [Chemical formula 22]

【0031】化合物No(15)Compound No. (15)

【化23】 [Chemical formula 23]

【0032】化合物No(16)Compound No. (16)

【化24】 [Chemical formula 24]

【0033】化合物No(17)Compound No. (17)

【化25】 [Chemical 25]

【0034】又、トナーには、添加剤として、感光体・
キャリアーの保護、トナーの流動性向上、熱特性・電気
特性・物理特性の調整、抵抗調整、軟化点調整、定着性
向上等を目的として、疎水性シリカ、金属石ケン、フッ
素系界面活性剤、フタル酸ジオクチル、ワックス、酸化
スズ、導電性酸化亜鉛等が必要により使用される。
The toner may be used as an additive in the toner.
For the purpose of carrier protection, toner fluidity improvement, thermal / electrical / physical property adjustment, resistance adjustment, softening point adjustment, and fixability improvement, hydrophobic silica, metal soap, fluorine-based surfactant, Dioctyl phthalate, wax, tin oxide, conductive zinc oxide and the like are used as necessary.

【0035】二成分現像剤に本発明のトナーを用いた場
合、キャリアとしては、微小なガラスビーズ、鉄粉、フ
ェライト粉、磁性粒子を分散した樹脂粒子のバインダ型
キャリアや表面をポリエステル系樹脂、フッ素系樹脂、
アクリル系樹脂、シリコン系樹脂等で被覆した樹脂コー
トキャリア等が用いられる。又、本発明のトナーは一成
分トナーとして用いても優れた性能を示す。
When the toner of the present invention is used as a two-component developer, as a carrier, fine glass beads, iron powder, ferrite powder, a binder type carrier of resin particles in which magnetic particles are dispersed or a polyester resin on the surface, Fluorine resin,
A resin coated carrier coated with an acrylic resin, a silicone resin or the like is used. Further, the toner of the present invention exhibits excellent performance even when used as a one-component toner.

【0036】[0036]

【実施例】以下、実施例により本発明を具体的に説明す
る。実施例中の部は重量部を表わす。
EXAMPLES The present invention will be specifically described below with reference to examples. Parts in the examples represent parts by weight.

【0037】実施例1 化合物No(1)1部、カーボンブラック5部、スチレ
ン−エチルヘキシルメタクリレート共重合体94部を加
熱混合装置により混練し、冷却後、ハンマーミルで粗粉
砕した。ジェットミルで微粉砕したのち分級して10〜
12μmの黒色トナーを得た。このトナーを鉄粉キャリ
アと4対100の重量比で混合し、振盪したところトナ
ーは負に帯電し、ブローオフ粉体帯電量測定装置で測定
したところ帯電量は−38μc/gであった。本トナー
を使用し、改造市販複写機で画像を出したところ、初期
及び1万枚コピー後でも鮮明な画質の像を得る事ができ
た。
Example 1 1 part of Compound No. (1), 5 parts of carbon black, and 94 parts of styrene-ethylhexyl methacrylate copolymer were kneaded by a heating mixer, cooled, and coarsely crushed by a hammer mill. Finely pulverize with a jet mill and then classify 10
12 μm black toner was obtained. This toner was mixed with an iron powder carrier in a weight ratio of 4: 100, and when shaken, the toner was negatively charged, and the charge amount measured by a blow-off powder charge amount measuring device was −38 μc / g. When this toner was used to produce an image on a modified commercial copying machine, a clear image could be obtained even at the initial stage and after copying 10,000 sheets.

【0038】実施例2 化合物No(6)1部、カーボンブラック5部、スチレ
ン−エチルヘキシルメタクリレート共重合体94部を加
熱混合装置により混練し、冷却後、ハンマーミルで粗粉
砕した。ジェットミルで微粉砕したのち分級して10〜
12μmの黒色トナーを得た。このトナーを鉄粉キャリ
アと4対100の重量比で混合し、振盪したところトナ
ーは負に帯電し、ブローオフ粉体帯電量測定装置で測定
したところ帯電量は−22μc/gであった。本トナー
を使用し、改造市販複写機で画像を出したところ、初期
及び1万枚コピー後でも鮮明な画質の像を得る事ができ
た。
Example 2 1 part of Compound No. (6), 5 parts of carbon black, and 94 parts of styrene-ethylhexyl methacrylate copolymer were kneaded by a heating mixer, cooled, and coarsely crushed by a hammer mill. Finely pulverize with a jet mill and then classify 10
12 μm black toner was obtained. This toner was mixed with an iron powder carrier at a weight ratio of 4: 100, and when shaken, the toner was negatively charged, and the charge amount measured by a blow-off powder charge amount measuring device was −22 μc / g. When this toner was used to produce an image on a modified commercial copying machine, a clear image could be obtained even at the initial stage and after copying 10,000 sheets.

【0039】実施例3 化合物No(6)1部、銅フタロシアニン系油溶性染料
であるスピロンブルー2BNH(保土谷化学工業株式会
社製品)5部、スチレン−ブチルメタクリレート共重合
体94部を加熱混合装置により混練し、冷却後、ハンマ
ーミルで粗粉砕した。ジェットミルで微粉砕したのちに
分級して10〜12μmの青色トナーを得た。このトナ
ーを鉄粉キャリアと4対100の重量比で混合し、振盪
したところトナーは負に帯電し、ブローオフ粉体帯電量
測定装置で測定したところ帯電量は−25μc/gであ
った。本トナーを使用し、改造市販複写機で画像を出し
たところ、初期及び1万枚コピー後でも鮮明な画質の像
を得る事ができた。
Example 3 1 part of Compound No. (6), 5 parts of copper phthalocyanine oil-soluble dye, Spiron Blue 2BNH (product of Hodogaya Chemical Co., Ltd.), and 94 parts of styrene-butyl methacrylate copolymer are mixed by heating. After kneading, cooling and coarse pulverization with a hammer mill. It was finely pulverized with a jet mill and then classified to obtain a blue toner of 10 to 12 μm. This toner was mixed with an iron powder carrier in a weight ratio of 4: 100, and when shaken, the toner was negatively charged, and the charge amount measured by a blow-off powder charge amount measuring device was −25 μc / g. When this toner was used to produce an image on a modified commercial copying machine, a clear image could be obtained even at the initial stage and after copying 10,000 sheets.

【0040】実施例4 化合物No(8)1部、カーボンブラック5部、スチレ
ン−エチルヘキシルメタクリレート共重合体94部を加
熱混合装置により混練し、冷却後、ハンマーミルで粗粉
砕した。ジェットミルで微粉砕したのち分級して10〜
12μmの黒色トナーを得た。このトナーをシリコンコ
ーティングキャリアと4対100の重量比で混合し、振
盪したところトナーは負に帯電し、ブローオフ粉体帯電
量測定装置で測定したところ帯電量は−22μc/gで
あった。本トナーを使用し、改造市販複写機で画像を出
したところ、初期及び1万枚コピー後でも鮮明な画質の
像を得る事ができた。
Example 4 1 part of Compound No. (8), 5 parts of carbon black, and 94 parts of styrene-ethylhexyl methacrylate copolymer were kneaded by a heating mixer, cooled, and coarsely crushed by a hammer mill. Finely pulverize with a jet mill and then classify 10
12 μm black toner was obtained. This toner was mixed with a silicon coating carrier in a weight ratio of 4: 100, and when shaken, the toner was negatively charged, and the charge amount measured by a blow-off powder charge amount measuring device was −22 μc / g. When this toner was used to produce an image on a modified commercial copying machine, a clear image could be obtained even at the initial stage and after copying 10,000 sheets.

【0041】実施例5 化合物No(8)1部、磁性鉄粉60部、スチレン−ア
クリル系共重合体100部を加熱混合装置により混練
し、冷却後、ハンマーミルで粗粉砕した。ジェットミル
で微粉砕したのち分級して10〜12μmの黒色トナー
を得た。本一成分系トナーを使用し、改造市販複写機で
画像を出したところ、初期及び1万枚コピー後でも鮮明
な画質の像を得る事ができた。
Example 5 1 part of Compound No. (8), 60 parts of magnetic iron powder and 100 parts of styrene-acrylic copolymer were kneaded by a heating mixer, cooled, and coarsely crushed by a hammer mill. It was finely pulverized with a jet mill and then classified to obtain a black toner of 10 to 12 μm. When an image was produced by a modified commercial copying machine using this one-component toner, a clear image quality could be obtained even at the initial stage and after copying 10,000 sheets.

【0042】実施例6〜11 実施例1で使用した化合物No(1)の代わりに表1に
示した化合物を用いた他は、実施例1と同様に行なって
表1に示す結果を得た。
Examples 6 to 11 The results shown in Table 1 were obtained in the same manner as in Example 1 except that the compound shown in Table 1 was used instead of the compound No (1) used in Example 1. .

【0043】[0043]

【表1】 [Table 1]

───────────────────────────────────────────────────── フロントページの続き (72)発明者 安西 光利 茨城県つくば市御幸ケ丘45番地 保土谷化 学工業株式会社筑波研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsutoshi Anzai 45 Miyukigaoka, Tsukuba-shi, Ibaraki Hodogaya Chemical Industry Co., Ltd. Tsukuba Research Institute

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 下記一般式 【化1】 〔式中X、及びYは各々独自に水素原子、 【化2】 (式中Dは電子供与性基を表し、R1 及びR2 は各々独
立に水素原子、ハロゲン原子、アルキル基、シクロアル
キル基、アラルキル基、アリール基、アシル基、シアノ
基、または、ニトロ基を表わす。)、 【化3】 (式中、D及びR1 ,R2 は前記と同じ意味を表す。)
または、 【化4】 (式中、D及びR1 ,R2 は前記と同じ意味を表す。)
を表し、但しXとYは同時に水素ではなくZは水素原
子、アルキル基または、アリ−ル基を表す。〕で表され
る化合物を含有する事を特徴とする負帯電性電子写真用
トナー。
1. The following general formula: [Wherein X and Y are independently a hydrogen atom, (Wherein D represents an electron-donating group, R 1 and R 2 are each independently a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, an acyl group, a cyano group, or a nitro group. ), And (In the formula, D and R 1 and R 2 have the same meanings as described above.)
Or, (In the formula, D and R 1 and R 2 have the same meanings as described above.)
However, X and Y are not hydrogen at the same time, and Z is a hydrogen atom, an alkyl group or an aryl group. ] A negatively-charged electrophotographic toner containing a compound represented by the following.
JP4127953A 1992-04-22 1992-04-22 Negatively charging electrophotographic toner Pending JPH05297638A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP4127953A JPH05297638A (en) 1992-04-22 1992-04-22 Negatively charging electrophotographic toner
US08/010,574 US5378573A (en) 1992-04-22 1993-01-28 Electrophotographic toner
DE69310610T DE69310610T2 (en) 1992-04-22 1993-02-12 Electrophotographic toner
EP93102253A EP0566835B1 (en) 1992-04-22 1993-02-12 Electrophotographic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4127953A JPH05297638A (en) 1992-04-22 1992-04-22 Negatively charging electrophotographic toner

Publications (1)

Publication Number Publication Date
JPH05297638A true JPH05297638A (en) 1993-11-12

Family

ID=14972732

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4127953A Pending JPH05297638A (en) 1992-04-22 1992-04-22 Negatively charging electrophotographic toner

Country Status (1)

Country Link
JP (1) JPH05297638A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006038606A1 (en) * 2004-10-05 2006-04-13 Shionogi & Co., Ltd. Biaryl derivative
WO2011055843A1 (en) * 2009-11-09 2011-05-12 国立大学法人 岡山大学 Retinoid compound

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006038606A1 (en) * 2004-10-05 2006-04-13 Shionogi & Co., Ltd. Biaryl derivative
WO2011055843A1 (en) * 2009-11-09 2011-05-12 国立大学法人 岡山大学 Retinoid compound

Similar Documents

Publication Publication Date Title
JPS62145255A (en) Toner for developing electrostatic charge image
US5413891A (en) Electrostatic image developing toner
JP3313871B2 (en) Toner for electrostatic image development
JP3100776B2 (en) Charge control agent and positively chargeable toner for developing electrostatic images
JPS60108861A (en) Toner for electrostatic charge image development
US5413892A (en) Electrostatic image developing toner
JP2806487B2 (en) Electrophotographic toner
JPH05297638A (en) Negatively charging electrophotographic toner
EP0560080B1 (en) Electrophotographic toner
JPH06258871A (en) Electrostatic charge image developing toner
KR100291530B1 (en) Electrostatic charge phenomenon toner
JP3720092B2 (en) Toner for electrostatic image development
JPH07175269A (en) Electrostatic charge image developing toner
JP3461045B2 (en) Toner for developing electrostatic images
JPH05249746A (en) Negatively chargeable electrophotographic toner
JPH0683111A (en) Toner for electrophotography
JP3461046B2 (en) Positively chargeable toner for developing electrostatic images
EP0566835B1 (en) Electrophotographic toner
US5368971A (en) Electrophotographic toner containing a zinc benzoate compound
JPH05297637A (en) Negatively charging electrophotographic toner
JP2814510B2 (en) Electrostatic toner
JPH05297639A (en) Positively charging electrophotographic toner
JPH06118720A (en) Toner for developing electrostatic charge image
EP0463876B1 (en) Electrophotographic toner containing a zinc benzoate compound
JPH05249747A (en) Positively chargeable electrophotographic toner