JPH05188644A - Electrophotographic color toner - Google Patents

Electrophotographic color toner

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Publication number
JPH05188644A
JPH05188644A JP4001845A JP184592A JPH05188644A JP H05188644 A JPH05188644 A JP H05188644A JP 4001845 A JP4001845 A JP 4001845A JP 184592 A JP184592 A JP 184592A JP H05188644 A JPH05188644 A JP H05188644A
Authority
JP
Japan
Prior art keywords
wax
toner
organic pigment
color
resin
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.)
Withdrawn
Application number
JP4001845A
Other languages
Japanese (ja)
Inventor
Takahiro Kashiwakawa
貴弘 柏川
Katsuji Ko
勝治 胡
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4001845A priority Critical patent/JPH05188644A/en
Publication of JPH05188644A publication Critical patent/JPH05188644A/en
Withdrawn legal-status Critical Current

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Abstract

PURPOSE:To obtain a toner excellent in color mixture property when fixing, free from the welding of wax to a triboelectrified member even when continuously printing and excellent in offsetting resistance and printing stability by consisting of a binding resin, an organic pigment and the wax dispersed CONSTITUTION:The subject is used for a non-magnetic one component development and consists of the binding resin, the organic pigment and the wax subjected to high sheared predispersion treatment. An epoxy resin, a polyester resin or the like is used as the toner binding resin and when particularly the polyester resin is used, excellent color mixture property and transparency are attained. As a used benzine base organic pigment, e.g. C.I. 21090 of color index or the like, as a quinacridone base organic pigment, C.I. 73916 of color index is used, as a rhodamine base organic pigment, C.I. 45160 of color index is used. These pigments has excellent dispersibility in the binding resin and has excellent spectral reflectance characteristic.

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、電子写真に用いられる
カラートナーに関する。電子写真法としては、米国特許
第2297691号等に記載された方式が周知である
が、これは一般には光導電性を有する静電潜像担体にコ
ロナ放電などにより一様な静電荷を与え、種々の手段に
より該静電潜像担体上に光像を照射することによって電
気的潜像を形成し、次いで該潜像をトナーと呼ばれる着
色微粉末を用いて現像可視化し、必要に応じて紙等にト
ナー画像を転写した後、圧力、熱、光等より定着を行い
印刷物を得るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color toner used in electrophotography. As the electrophotographic method, the method described in US Pat. No. 2,297,691 is well known, which generally gives a uniform electrostatic charge to an electrostatic latent image carrier having photoconductivity by corona discharge or the like. An electrical latent image is formed by irradiating a light image on the electrostatic latent image carrier by various means, and then the latent image is developed and visualized using colored fine powder called toner, and if necessary, paper. After the toner image is transferred to a printer or the like, it is fixed by pressure, heat, light or the like to obtain a printed matter.

【0002】[0002]

【従来の技術と発明が解決しようとする課題】前記現像
剤としては磁性キャリアと非磁性または磁性トナーから
成る2成分現像剤、または磁性あるいは非磁性トナーか
ら成る1成分現像剤がある。この中で、2成分現像剤は
キャリアとトナーの摩擦により、トナーを帯電させてい
るため、印刷枚数に伴う磁性キャリア面へのトナーの融
着が発生し、キャリアが劣化し、現像剤の寿命が短い欠
点がある。
2. Description of the Related Art As the developer, there is a two-component developer comprising a magnetic carrier and a non-magnetic or magnetic toner, or a one-component developer comprising a magnetic or non-magnetic toner. Among these, in the two-component developer, the toner is charged by the friction between the carrier and the toner, so that the toner is fused to the magnetic carrier surface according to the number of printed sheets, the carrier is deteriorated, and the life of the developer is shortened. Has a shortcoming.

【0003】一方、1成分現像剤では、キャリアを使用
せず、トナーのみを消費するので、キャリアへのトナー
融着が発生しないため、現像剤としての寿命は長いと言
う長所がある。しかし、1成分現像剤として、磁性トナ
ーを用いる場合、磁性粉(黒色)を含有する必要がある
ため、カラー化が困難である。また、非磁性トナーを用
いた場合、カラー化が容易であり、現像剤寿命が長い。
しかし、前記現像方法を用いると、トナーには以下の問
題が生じる。
On the other hand, the one-component developer consumes only the toner without using the carrier, so that the toner is not fused to the carrier, so that the life of the developer is long. However, when the magnetic toner is used as the one-component developer, it is necessary to contain the magnetic powder (black), and thus it is difficult to color the toner. In addition, when a non-magnetic toner is used, colorization is easy and the developer life is long.
However, when the developing method is used, the toner has the following problems.

【0004】現像剤担持体上のトナーを該摩擦帯電部材
で強く摩擦帯電させた場合、良好な立ち上がり特性を持
って帯電するが、トナーバインダ樹脂に対しワックスを
添加すると連続印刷に伴い、摩擦帯電部材にワックスが
融着し、帯電不良によるかぶり等の印字不良を引き起こ
し、長期の連続印刷により印字品位を著しく低下させ
る。このため、トナーに含まれるワックスを融着しにく
する必要がある。
When the toner on the developer carrying member is strongly triboelectrified by the triboelectrification member, it is charged with good rising characteristics. However, when wax is added to the toner binder resin, triboelectrification is caused by continuous printing. Wax is fused to the member, causing printing defects such as fogging due to poor charging, and remarkably lowering the printing quality by long-term continuous printing. Therefore, it is necessary to make the wax contained in the toner difficult to fuse.

【0005】また、電子写真法により、カラーの多色像
を得る場合、一般にイエロー、マゼンタ、シアンの3色
のトナーを用い、各色のトナー像を重ね合わせ、混色す
ることにより実現している。従って、定着時、トナーど
うしの混色の善し悪しが画像品質に影響を与えるなど、
カラートナー特有の特性が必要となる。トナーの混色性
を上げるには、定着機の温度を上げ、トナーを完全に溶
融させる必要がある。しかし、定着機温度を上昇させる
ことで、定着用熱ローラに対するトナーのオフセットが
発生することがある。このため、定着時に於ける熱ロー
ラへのオフセットを防止する必要がある。オフセットを
防止するためには、トナーに対しワックスを添加するこ
とが有効な手段であることが知られている。しかし、ト
ナーに対しワックスを添加すると、逆に、前述した摩擦
帯電部材へのワックスの融着が発生し両立が難しい。
Further, in order to obtain a multicolor image by electrophotography, generally, toners of three colors of yellow, magenta and cyan are used, and toner images of respective colors are superposed and mixed. Therefore, at the time of fixing, whether the color mixture of the toners is good or bad affects the image quality.
The characteristic peculiar to color toner is required. In order to improve the color mixing property of the toner, it is necessary to raise the temperature of the fixing device to completely melt the toner. However, increasing the temperature of the fixing device may cause offset of the toner with respect to the heat roller for fixing. Therefore, it is necessary to prevent the offset to the heat roller during fixing. It is known that adding wax to the toner is an effective means for preventing offset. However, when wax is added to the toner, conversely, the wax is fused to the above-mentioned frictional charging member, which makes it difficult to achieve both at the same time.

【0006】また、カラートナーに用いる着色剤として
も下記に示す条件がある。 (1)バインダ樹脂中での分散性が良く透明性に優れる
こと。 (2)色再現域を広くするため、分光反射特性が良いこ
と。 本発明は、このような従来の問題点に鑑みてなされたも
のであって、定着時に混色性に優れ、連続印刷を行って
も、摩擦帯電部材にワックスが融着しにくく、また、対
オフセット性、印字安定性が良好である電子写真用カラ
ートナーを提供することを目的とする。
The colorant used in the color toner has the following conditions. (1) Good dispersibility in the binder resin and excellent transparency. (2) Spectral reflection characteristics are good in order to widen the color reproduction range. The present invention has been made in view of such conventional problems, is excellent in color mixing at the time of fixing, and even when continuous printing is performed, it is difficult for the wax to be fused to the triboelectrification member, and the offset resistance is high. It is an object of the present invention to provide a color toner for electrophotography, which has good properties and printing stability.

【0007】[0007]

【課題を解決するための手段】カラートナーにおける混
色性を向上するには定着機の温度を上昇させ、トナーを
完全に溶融させる必要がある。しかし、定着機の温度を
上昇とさると、定着用熱ローラに対するトナーのオフセ
ットが発生する。そこで、対オフセット性を向上させる
ためにワックスを添加する。ところが、低融点樹脂にワ
ックスを添加すると摩擦帯電部材にワックス融着が発生
する。ワックス融着はトナー表面にワックスの塊がある
ことにより発生するためワックスの分散性が悪いトナー
は発生しやすい。そこで、本発明者らは良好なワックス
分散方法を検討した結果、トナーの製造以前に基材樹脂
に対して、ワックスを30〜70wt%の比率で高シェ
アプレ分散することが有効であることを見いだした。
In order to improve the color mixing property of color toner, it is necessary to raise the temperature of the fixing device to completely melt the toner. However, when the temperature of the fixing device is raised, toner offset occurs with respect to the fixing heat roller. Therefore, wax is added to improve the offset resistance. However, when wax is added to the low melting point resin, wax fusion occurs in the triboelectric charging member. Wax fusion occurs due to the presence of lumps of wax on the surface of the toner, so toner with poor wax dispersibility is likely to occur. Therefore, as a result of studying a good wax dispersion method, the present inventors have found that it is effective to pre-disperse the wax at a high share ratio of 30 to 70 wt% with respect to the base resin before the toner is manufactured. It was

【0008】前記目的を達成するために、本発明は、非
磁性一成分カラー現像方法に用いられ、バインダ樹脂と
有機顔料と高シェアプレ分散を行ったワックスからな
る。以下、本発明をさらに詳細に説明する。トナーバイ
ンダ樹脂としてはエポキシ樹脂、スチレン−アクリル酸
エステル共重合体、ポリエステル樹脂、ポリウレタン樹
脂等が考えられるが、特にポリエステル樹脂を用いる
と、混色性と透明性を良好にできる。
In order to achieve the above object, the present invention is used in a non-magnetic one-component color developing method, and comprises a binder resin, an organic pigment and a high shear predispersed wax. Hereinafter, the present invention will be described in more detail. The toner binder resin may be an epoxy resin, a styrene-acrylic acid ester copolymer, a polyester resin, a polyurethane resin, or the like. Particularly, when the polyester resin is used, the color mixing property and the transparency can be improved.

【0009】次に、本発明に用いるベンジジン系有機顔
料としては、例えば、カラーインデックスNo.のC.I.21
090(ピグメントイエロー12, KET Yellow 406, 大日本イ
ンキ化学工業),C.I.21095(ピグメントイエロー14, KE
T Yellow 404, 大日本インキ化学工業),C.I.21100(ピ
グメントイエロー13, KET Yellow 405, 大日本インキ化
学工業)などが挙げられる。本顔料はバインダ樹脂中で
の分散性に優れ、また、分光反射特性が良好である。
Next, examples of the benzidine organic pigment used in the present invention include CI21 having a color index No.
090 (Pigment Yellow 12, KET Yellow 406, Dainippon Ink and Chemicals), CI21095 (Pigment Yellow 14, KE
T Yellow 404, Dainippon Ink and Chemicals), CI21100 (Pigment Yellow 13, KET Yellow 405, Dainippon Ink and Chemicals). The pigment has excellent dispersibility in the binder resin and good spectral reflection characteristics.

【0010】次に、本発明に用いるキナクリドン系有機
顔料としては、カラーインデックスNo.のC.I.73916(ピ
グメントレッド 122, KET Red 309, 大日本インキ化学
工業)がある。本顔料は、バインダ樹脂中での分散性に
優れ、また、分光反射特性が良好である。次に、本発明
に用いるローダミン系有機顔料としては、カラーインデ
ックスNo.のC.I.45160(ピグメントレッド 81, Ultra R
ose R, 東洋インキ製造)がある。本顔料はバインダ樹
脂中での分散性に優れ、また、分光反射特性が良好であ
る。
Next, as the quinacridone type organic pigment used in the present invention, there is CI73916 (Pigment Red 122, KET Red 309, Dainippon Ink and Chemicals) having a color index No. The pigment has excellent dispersibility in a binder resin and good spectral reflection characteristics. Next, as the rhodamine-based organic pigment used in the present invention, CI45160 (Pigment Red 81, Ultra R) having a color index No.
ose R, Toyo Ink Manufacturing). The pigment has excellent dispersibility in the binder resin and good spectral reflection characteristics.

【0011】次に、本発明に用いるフタロシアニン系有
機顔料としては、カラーインデックスNo.のC.I.74160
(ピグメントブルー15, KET Blue 102, KET Blue 103,KE
T Blue 104, KET Blue 105, KET Blue 106, KET Blue 1
11,大日本インキ化学工業),C.I.74260(ピグメントグ
リーン7, KET Green 201, 大日本インキ化学工業)など
が挙げられる。本顔料はバインダ樹脂中での分散性に優
れ、また、分光反射特性が良好である。
Next, as the phthalocyanine-based organic pigment used in the present invention, CI74160 having a color index No.
(Pigment Blue 15, KET Blue 102, KET Blue 103, KE
T Blue 104, KET Blue 105, KET Blue 106, KET Blue 1
11, Dainippon Ink and Chemicals), CI74260 (Pigment Green 7, KET Green 201, Dainippon Ink and Chemicals). The pigment has excellent dispersibility in the binder resin and good spectral reflection characteristics.

【0012】また、電荷制御剤として、含金染料、脂肪
酸エステル、アミノ基を有する化合物を加えてもよい。
本発明で用いるワックスとしては、常温個体のワックス
を利用することができる。本発明のトナーは、トナー製
造以前に、前記バインダ樹脂に対し、ワックス比30〜
70%の比率で高シェアプレ分散(以後マスターバッチ
と言う)することによりワックスのマスターバッチを作
成し、製造する。そして、トナーに含まれるワックス分
のマスターバッチをトナーに添加し、従来公知方法によ
りトナーを製造することができる。製造には、前記バイ
ンダ樹脂と前記顔料、マスターバッチワックスまた、必
要であれば、帯電制御剤等を添加して例えば、加圧ニー
ダ、エクストルーダ、などにより、溶融混練し、均一分
散させ、例えば、風力分級機などにより、分級して所望
のトナーを得ることができる。
Further, as a charge control agent, a metal-containing dye, a fatty acid ester, or a compound having an amino group may be added.
As the wax used in the present invention, a normal temperature solid wax can be used. Before the toner is manufactured, the toner of the present invention has a wax ratio of 30 to 30 with respect to the binder resin.
A high master predispersion (hereinafter referred to as a masterbatch) at a ratio of 70% is used to prepare and manufacture a wax masterbatch. Then, the master batch for the wax contained in the toner is added to the toner, and the toner can be manufactured by a conventionally known method. In the production, the binder resin and the pigment, a masterbatch wax, and if necessary, a charge control agent or the like is added, for example, a pressure kneader, an extruder, and the like, and melt-kneaded and uniformly dispersed, for example, A desired toner can be obtained by classification with an air classifier or the like.

【0013】前記ワックスとしては、その軟化点が11
0℃〜190℃であり、また、溶融熱が15cal/g
以下であり、かつ、ガラス転移温度が55〜70℃であ
るものを用いる。また、ワックスとしては、ポリオレフ
ィンからなり、高シェアプレ分散後の平均粒径が0.1
〜8μmであるものを用いる。
The wax has a softening point of 11
0 ° C to 190 ° C, and the heat of fusion is 15 cal / g
The following is used and the glass transition temperature is 55 to 70 ° C. The wax is made of polyolefin and has an average particle size of 0.1 after high shear pre-dispersion.
What is .about.8 .mu.m is used.

【0014】[0014]

【実施例】以下、実施例により本発明を説明するが、本
発明はこれよって限定されるものではない。 実施例1 バインダ樹脂:ポリエステル樹脂(軟化点100℃) 91重量部 マスターバッチワックス:前記ポリエステル樹脂,ビスコール550P 100対30wt% 3重量部 顔料:C.I.21090, KET Yellow 406 ( 大日本インキ製) 4重量部 帯電制御剤:BONTORON E84(オリエント化学製) 2重量部 上記組成物をボールミルにより混合撹拌し、140℃に
加熱したエクストルーダで溶融混練し、冷却固化したの
ち、粉砕機で粗粉砕し、さらに、ジェットミルで細粉砕
した。得られた微粉末を風力分級機で分級して5〜20
μmのトナーを得た。
EXAMPLES The present invention will be described below with reference to examples, but the present invention is not limited thereto. Example 1 Binder resin: Polyester resin (softening point 100 ° C.) 91 parts by weight Masterbatch wax: Polyester resin, Viscol 550P 100 to 30 wt% 3 parts by weight Pigment: CI21090, KET Yellow 406 (Dainippon Ink) 4 parts by weight Charge control agent: BONTORON E84 (manufactured by Orient Chemical Co., Ltd.) 2 parts by weight The above composition is mixed and stirred by a ball mill, melt-kneaded by an extruder heated to 140 ° C., cooled and solidified, then coarsely crushed by a crusher, and further jetted. Finely crushed with a mill. The obtained fine powder is classified with an air classifier for 5 to 20
A toner of μm was obtained.

【0015】次に、マスターバッチワックスを用いたカ
ラートナーについて、3色同時印刷が行え、非磁性1成
分方式と熱ロール定着機を採用しているレーザプリンタ
を用いて印刷試験を行った。なお、マゼンタ、シアンと
も着色剤のみ異なるトナーを用いた。結果、印刷画像は
混色性と透明性に優れ、OHP印刷において、良好な透
過性が確認された。また、5万枚印刷後も摩擦帯電部材
にトナー融着は発生せず、印字安定性は良好であった。 実施例2 ワックスとして(融解熱8cal/g,軟化点110
℃)のポリオレフィンワックスを用いた以外は実施例1
と同様にトナーを試作した。次に実施例1と同様に評価
した結果、実施例1と同様に良好な結果が得られた。 実施例3 ワックスとして(融解熱15cal/g,軟化点190
℃)のポリオレフィンワックスを用いた以外は実施例1
と同様にトナーを試作した。次に実施例1と同様に評価
した結果、実施例1と同様に良好な結果が得られた。 実施例4 有機顔料としてキナクリドン系顔料 KET Red 309(大日
本インキ化学工業)を用いた以外は実施例1と同様にマ
ゼンタトナーを試作した。次に、実施例1と同様に評価
した結果、実施例1と同様に良好な結果が得られる。 実施例5 有機顔料としてローダミン系顔料 Ultra Rose R (東洋
インキ製造)を用いた以外は実施例1と同様にマゼンタ
トナーを試作した。次に、実施例1と同様に評価した結
果、実施例1と同様に良好な結果が得られた。 実施例6 有機顔料としてフタロシアニン系顔料 KET Blue 111
(大日本インキ化学工業)を用いた以外は実施例1と同
様にシアントナーを試作した。次に、実施例1と同様に
評価した結果、実施例1と同様に良好な結果が得られ
た。 比較例1 マスターバッチワックスを用いない以外は実施例1と同
様にトナーを試作した。次に、実施例1と同様に評価し
た結果、約千枚印刷後から、摩擦帯電部材にワックス融
着が発生し、印字劣化が見られた。 比較例2 ワックスとして(融解熱15cal/g,軟化点200
℃)のポリオレフィンワックスを用いた以外は実施例1
と同様にトナーを試作した。次に実施例1と同様に評価
した結果、軟化点が高すぎるためワックスが溶けず、ワ
ックスの離型効果が得られずオフセットが発生した。 比較例3 ワックスとして(融解熱7cal/g,軟化点90℃)
のポリオレフィンワックスを用いた以外は実施例1と同
様にトナーを試作した。次に実施例1と同様に評価した
結果、軟化点が低く印刷時にドラムフィルミングが発生
した。 比較例4 ワックスとして(融解熱20cal/g,軟化点105
℃)のポリオレフィンワックスを用いた以外は実施例1
と同様にトナーを試作した。次に実施例1と同様に評価
した結果、融解熱が高すぎて、融解しないため離型効果
が得られず、オフセットが発生し、印字劣化が発生し
た。 比較例5 有機顔料としてキナクリドン系顔料 KET Red 309(大日
本インキ化学工業)を用いた以外は比較例1と同様にマ
ゼンタトナーを試作した。次に、実施例1と同様に評価
した結果、比較例1と同様に、印字劣化が見られた。 比較例6 有機顔料としてローダミン系顔料 Ultra Rose R (東洋
インキ製造)を用いた以外は比較例1と同様にマゼンタ
トナーを試作した。次に、実施例1と同様に評価した結
果、比較例1と同様に、印字劣化が見られた。 比較例7 有機顔料としてフタロシアン系顔料 KET Blue 111 (大
日本インキ化学工業)を用いた以外は比較例1と同様に
マゼンタトナーを試作した。次に、実施例1と同様に評
価した結果、比較例1と同様に、印字劣化が見られた。
Next, a color toner using a masterbatch wax was subjected to a printing test by using a laser printer capable of simultaneous printing of three colors and employing a non-magnetic one-component system and a heat roll fixing device. It should be noted that toners having different colorants were used for both magenta and cyan. As a result, the printed image was excellent in color mixture and transparency, and good transparency was confirmed in OHP printing. Further, even after printing 50,000 sheets, toner fusion did not occur on the triboelectric charging member, and the printing stability was good. Example 2 As a wax (heat of fusion 8 cal / g, softening point 110
Example 1 except that a polyolefin wax (° C.) Was used.
Toner was manufactured in the same manner as in. Next, as a result of evaluation as in Example 1, good results were obtained as in Example 1. Example 3 As a wax (heat of fusion 15 cal / g, softening point 190
Example 1 except that a polyolefin wax (° C.) Was used.
Toner was manufactured in the same manner as in. Next, as a result of evaluation as in Example 1, good results were obtained as in Example 1. Example 4 A magenta toner was manufactured in the same manner as in Example 1 except that the quinacridone pigment KET Red 309 (Dainippon Ink and Chemicals) was used as the organic pigment. Next, as a result of evaluation as in Example 1, good results are obtained as in Example 1. Example 5 A magenta toner was manufactured in the same manner as in Example 1 except that Rhodamine-based pigment Ultra Rose R (manufactured by Toyo Ink Co., Ltd.) was used as the organic pigment. Next, as a result of evaluation as in Example 1, good results were obtained as in Example 1. Example 6 Phthalocyanine-based pigment KET Blue 111 as an organic pigment
A cyan toner was experimentally manufactured in the same manner as in Example 1 except that (Dainippon Ink and Chemicals) was used. Next, as a result of evaluation as in Example 1, good results were obtained as in Example 1. Comparative Example 1 A toner was experimentally manufactured in the same manner as in Example 1 except that the master batch wax was not used. Next, as a result of evaluation in the same manner as in Example 1, wax fusion occurred on the triboelectric charging member after printing about 1,000 sheets, and print deterioration was observed. Comparative Example 2 As a wax (heat of fusion 15 cal / g, softening point 200
Example 1 except that a polyolefin wax (° C.) Was used.
Toner was manufactured in the same manner as in. Next, as a result of evaluation in the same manner as in Example 1, the wax was not melted because the softening point was too high, the release effect of the wax was not obtained, and offset occurred. Comparative Example 3 As a wax (heat of fusion 7 cal / g, softening point 90 ° C.)
A toner was experimentally manufactured in the same manner as in Example 1 except that the above polyolefin wax was used. Next, as a result of evaluation as in Example 1, the softening point was low and drum filming occurred during printing. Comparative Example 4 As a wax (heat of fusion 20 cal / g, softening point 105
Example 1 except that a polyolefin wax (° C.) Was used.
Toner was manufactured in the same manner as in. Next, as a result of evaluation in the same manner as in Example 1, since the heat of fusion was too high and the heat did not melt, the releasing effect was not obtained, offset occurred, and print deterioration occurred. Comparative Example 5 A magenta toner was manufactured in the same manner as in Comparative Example 1 except that the quinacridone pigment KET Red 309 (Dainippon Ink and Chemicals) was used as the organic pigment. Next, as a result of evaluation in the same manner as in Example 1, print deterioration was observed as in Comparative Example 1. Comparative Example 6 A magenta toner was manufactured in the same manner as in Comparative Example 1 except that Rhodamine pigment Ultra Rose R (manufactured by Toyo Ink Co., Ltd.) was used as the organic pigment. Next, as a result of evaluation in the same manner as in Example 1, print deterioration was observed as in Comparative Example 1. Comparative Example 7 A magenta toner was manufactured in the same manner as in Comparative Example 1 except that the phthalocyanine pigment KET Blue 111 (Dainippon Ink and Chemicals) was used as the organic pigment. Next, as a result of evaluation in the same manner as in Example 1, print deterioration was observed as in Comparative Example 1.

【0016】[0016]

【発明の効果】以上説明してきたように、本発明によれ
ば、定着時の混色性に優れ、連続印刷を行っても、摩擦
帯電部材にワックスが融着しにくく、また、対オフセッ
ト性、印字安定性が良好であった。
As described above, according to the present invention, the color mixture at the time of fixing is excellent, the wax is not easily fused to the triboelectrification member even when continuous printing is performed, and the offset resistance, The printing stability was good.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 G03G 9/08 365 381 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Internal reference number FI technical display location G03G 9/08 365 381

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】非磁性一成分カラー現像方法に用いられ、
バインダ樹脂と有機顔料と高シェアプレ分散を行ったワ
ックスからなることを特徴とする電子写真用カラートナ
ー。
1. Used in a non-magnetic one-component color developing method,
A color toner for electrophotography, which comprises a binder resin, an organic pigment, and a wax having a high shear predispersion.
【請求項2】前記ワックスの軟化点が110℃〜190
℃であることを特徴とする請求項1の電子写真用カラー
トナー。
2. The wax has a softening point of 110 ° C. to 190.
The color toner for electrophotography according to claim 1, which is at a temperature of ° C.
【請求項3】前記ワックスの融解熱が15cal/g以
下であり、かつ、ガラス転移温度が55〜70℃である
ことを特徴とする請求項1の電子写真用カラートナー。
3. The color toner for electrophotography according to claim 1, wherein the wax has a heat of fusion of 15 cal / g or less and a glass transition temperature of 55 to 70 ° C.
【請求項4】前記ワックスがポリオレフィンであること
を特徴とする請求項1の電子写真用カラートナー。
4. The color toner for electrophotography according to claim 1, wherein the wax is a polyolefin.
【請求項5】前記ワックスの高シェアプレ分散後の平均
粒径が0.1〜8μmであることを特徴とする請求項1
の電子写真用カラートナー。
5. The average particle size of the wax after high shear pre-dispersion is 0.1 to 8 μm.
Color toner for electrophotography.
【請求項6】前記バインダ樹脂としてポリエステル樹脂
を用いることを特徴とする請求項1の電子写真用カラー
トナー。
6. The color toner for electrophotography according to claim 1, wherein a polyester resin is used as the binder resin.
JP4001845A 1992-01-09 1992-01-09 Electrophotographic color toner Withdrawn JPH05188644A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4001845A JPH05188644A (en) 1992-01-09 1992-01-09 Electrophotographic color toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4001845A JPH05188644A (en) 1992-01-09 1992-01-09 Electrophotographic color toner

Publications (1)

Publication Number Publication Date
JPH05188644A true JPH05188644A (en) 1993-07-30

Family

ID=11512890

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4001845A Withdrawn JPH05188644A (en) 1992-01-09 1992-01-09 Electrophotographic color toner

Country Status (1)

Country Link
JP (1) JPH05188644A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07333901A (en) * 1994-06-13 1995-12-22 Minolta Co Ltd Electrostatic latent image developing toner
US6509129B2 (en) 2000-09-18 2003-01-21 Kao Corporation Toner for electrophotography
JP2007248531A (en) * 2006-03-13 2007-09-27 Casio Electronics Co Ltd Master batch of release agent for toner, and pulverized toner
JP2009139511A (en) * 2007-12-05 2009-06-25 Ricoh Co Ltd Electrophotographic toner, two-component developer, image forming method, image forming apparatus and process cartridge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07333901A (en) * 1994-06-13 1995-12-22 Minolta Co Ltd Electrostatic latent image developing toner
US6509129B2 (en) 2000-09-18 2003-01-21 Kao Corporation Toner for electrophotography
JP2007248531A (en) * 2006-03-13 2007-09-27 Casio Electronics Co Ltd Master batch of release agent for toner, and pulverized toner
JP4576563B2 (en) * 2006-03-13 2010-11-10 カシオ電子工業株式会社 Release agent master batch for toner and pulverized toner
JP2009139511A (en) * 2007-12-05 2009-06-25 Ricoh Co Ltd Electrophotographic toner, two-component developer, image forming method, image forming apparatus and process cartridge

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