JPS5895752A - Magnetic toner - Google Patents

Magnetic toner

Info

Publication number
JPS5895752A
JPS5895752A JP56194211A JP19421181A JPS5895752A JP S5895752 A JPS5895752 A JP S5895752A JP 56194211 A JP56194211 A JP 56194211A JP 19421181 A JP19421181 A JP 19421181A JP S5895752 A JPS5895752 A JP S5895752A
Authority
JP
Japan
Prior art keywords
toner
magnetic
resistance
powder
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.)
Pending
Application number
JP56194211A
Other languages
Japanese (ja)
Inventor
Masumi Asanae
朝苗 益実
Koji Noguchi
浩司 野口
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP56194211A priority Critical patent/JPS5895752A/en
Publication of JPS5895752A publication Critical patent/JPS5895752A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00Developers
    • G03G9/08Developers with toner particles
    • G03G9/083Magnetic toner particles
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00Developers
    • G03G9/08Developers with toner particles
    • G03G9/0821Developers with toner particles characterised by physical parameters
    • G03G9/0823Electric parameters
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00Developers
    • G03G9/08Developers with toner particles
    • G03G9/083Magnetic toner particles
    • G03G9/0831Chemical composition of the magnetic components
    • G03G9/0833Oxides
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00Developers
    • G03G9/08Developers with toner particles
    • G03G9/083Magnetic toner particles
    • G03G9/0839Treatment of the magnetic components; Combination of the magnetic components with non-magnetic materials

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE:To obtain a toner which is excellent in its fixing property and is capable of developing at a high speed, by providing specified saturated magnetic flux density, coercive force and resistance value. CONSTITUTION:A mixture consisting of magnetic powder, fixing resin component and a resistance controlling agent is heated and kneaded. After cooling, it is ground to powder, and 10-40mu powder is obtained. To this toner, 0.5wt% carbon is added, and is thermally fixed, thus a magnetic toner is obtained. As for the magnetic powder, Fe3O4 or heat-treated hematite or ferrite is used, and it is set to a range of 10-50wt% so that saturated magnetic flux density of the toner to be 15-45emu/g, and its coercive force to be 200-4,500e. As for the resin, that which has >=50 deg.C glass transition point, such as polyester, wax-type resin, etc. is used. As for the resistance controlling agent, it is adjusted so that resistance of the toner becomes 10<6>-10<15>OMEGA.cm, by adding <=20wt% carbon black.

Description

【発明の詳細な説明】 本発明は磁気潜偉を現像するのに用いられる磁性トナー
に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to magnetic toners used to develop magnetic latent particles.

一般にコピーと呼ばれているものは、静電複写方式を利
用した藍式複写装置もしくはジアゾ感光と称する静電方
式を利用したものが主流で、特にPPC方式が主流を占
めている。
Generally speaking, what is called a copy is mainly an indigo copying device that uses an electrostatic copying method or an electrostatic method called diazo-sensitivity, and the PPC method is particularly mainstream.

このPPC方式は、複写紙として普通紙を用いるため1
枚当りの単価が安く、又コピー品質も嵐好であるが、こ
の方式に411々の欠点がある。その一つは、同−画儂
のコピーを得るのにセレンZμ01Cdsの様な感光体
に荷電−露光一現偉一転写一清掃の工程を毎回繰り返す
必要がある。この時に感光体の疲労や現偉時に用いるト
ナーの感光体への強い付着が問題となり、感光体の寿命
が短かい。
This PPC method uses plain paper as copy paper, so
Although the unit price per sheet is low and the copy quality is excellent, this method has 411 drawbacks. One is that a photoreceptor such as Selenium Zμ01Cds must undergo a charging-exposure-transfer-cleaning process each time to obtain a copy of the same painting. At this time, problems arise such as fatigue of the photoreceptor and strong adhesion of toner used during printing to the photoreceptor, resulting in a short life span of the photoreceptor.

そこでこのような欠点を除くために、例えば特開昭54
−52528号公報に示される様に磁気S*&利用した
磁気印字装置が提案されている。
Therefore, in order to eliminate such drawbacks, for example, Japanese Patent Laid-Open No. 54
As shown in Japanese Patent No. 52528, a magnetic printing device using magnetic S*& has been proposed.

上記公報によれば、この磁気印字装置に用いられる磁性
トナーとしてにロウもしくは樹脂分g20〜60 ku
t 16含む丁なわち磁性粉ヲ40〜B□wt嘩含むこ
とが必要とされる。しかるに、熱定着の場合でも定着性
の点から磁性粉の含有量は少ない方が好ましく、又圧力
定着の場合でも低圧力にて定着を可能とするためには磁
性粉の含有量は少ければ少い程有利である。ところがト
ナー中の磁性粉の含有量に少なすぎると、高速での画質
が低下してしまう・ 本発明の目的は、上述の従来技術の欠点を解消し、定着
性に丁ぐれしかも高速での高品質の画一が得られる磁性
トナーV提供することである。
According to the above publication, the wax or resin content of the magnetic toner used in this magnetic printing device is 20 to 60 ku.
It is necessary to contain 40 to 40 B□wt of magnetic powder. However, even in the case of heat fixing, the content of magnetic powder should be small from the viewpoint of fixing properties, and even in the case of pressure fixing, the content of magnetic powder should be small in order to enable fixing at low pressure. The less the better. However, if the content of magnetic powder in the toner is too low, the image quality at high speeds will deteriorate.The object of the present invention is to solve the above-mentioned drawbacks of the conventional technology, and to improve the fixing performance and the image quality at high speeds. An object of the present invention is to provide a magnetic toner V that can provide uniform quality.

本発明の磁性トナーにおいては、磁気潜傷を顕。The magnetic toner of the present invention exhibits magnetic latent scratches.

儂化するための磁性粉と記鍮紙への転写及び定着のため
の樹脂分およびトナー抵抗調節のための電導度調節材を
必須成分として用いる。
The essential components are magnetic powder for conversion, resin for transfer and fixing to brass paper, and conductivity adjustment material for adjusting toner resistance.

まず磁性粉の含有量は、先に述べた様に少い方が定着性
に丁ぐれるため、トナー全量に対しsowt s以下が
良く、一方磁力による搬送性を持たせるためには101
#を嘔以上が必要であることから10S50+st%の
範囲とすることが好ましい。これらの値は使用される磁
性粉の種類によって変ってくるが、トナーの飽和磁束密
度が15ないし45■/fとなるように設定すればよい
。またこの磁性粉の磁気特性の中で保磁力Incも重畳
であり1本発明では磁性粉の含有量を低くするため比較
的高いlHcを有するものが必要で、200−4500
gの範囲が有効である。磁性粉としては、墨色を有する
磁性粉でりが高(セしてIHoが50〜6000−程度
のものであれば使用でき、単独もしく[211以上を混
合することにより所定のIBC1!を有する磁性粉が得
られる。具体的Kに、例えばFmSO4として戸田工業
製ff 520 、 EFT 500 、 MTA −
740、関東電化製ABC−100、NBA 500 
、 C7’500(1,(’150004チタン工業製
BL −100、RB−BL等が使用でき、この他にも
多数の種類がある。またへマタイトやツユライト等を熱
処理することKより上記特性を持った磁性粉は容易に得
ることが出来る。
First of all, as mentioned earlier, the smaller the content of magnetic powder, the better the fixing properties, so it is better to keep it below sowt s based on the total amount of toner.
Since # is required to be greater than or equal to 0, it is preferable to set it in the range of 10S50+st%. Although these values vary depending on the type of magnetic powder used, they may be set so that the saturation magnetic flux density of the toner is 15 to 45 cm/f. In addition, among the magnetic properties of this magnetic powder, the coercive force Inc is also superimposed, and in the present invention, in order to lower the content of magnetic powder, it is necessary to have a relatively high lHc, which is 200-4500.
A range of g is valid. The magnetic powder can be used as long as it has a black color and has a high IHo value of about 50 to 6000, and has a predetermined IBC1! by itself or by mixing 211 or more. Magnetic powder is obtained.Specifically, for example, as FmSO4, Toda Kogyo FF 520, EFT 500, MTA-
740, Kanto Denka ABC-100, NBA 500
, C7'500(1,('150004 Titanium Kogyo BL-100, RB-BL, etc.) can be used, and there are many other types.Also, by heat treating hematite, tuyulite, etc., the above characteristics can be improved. Magnetic powder can be easily obtained.

次に定着成分の樹脂としては次の樹脂が一般に用いられ
る。輻射、オーブン、熱板、赤外線等の加熱定着方式に
対しては、エポキシ樹脂、ポリエステル樹脂、アクリル
系樹脂、ワックス系樹脂等があげられる。ヒートロール
定着用樹脂としては。
Next, the following resins are generally used as the fixing component resin. For heat fixing methods such as radiation, oven, hot plate, and infrared rays, epoxy resins, polyester resins, acrylic resins, wax resins, etc. can be used. As a heat roll fixing resin.

スチレン系樹脂、ポリエステル系樹脂、ブタジェン系樹
脂、アクリル系樹脂、アレイン酸樹脂等の溶融粘度が高
い樹脂のうち単体もしくは2s以上の共重合体が用いら
れる。そして圧力定着用樹脂として框、天然もしくに合
成のワックス、各種ポリエチレンワックス、アミドワッ
クス、エポキシ樹脂な単独もしくにこれらとエチレン酢
酸ビニル共重体、ロジン系樹脂の一謹以上な組合せて使
用することかできる。これらの樹脂成分は、低融点であ
る程定着性に良いが、トナーの凝集状態が起りやすいこ
とから、SOv以上のガラス転移点tVすることが好ま
しい。この凝集性と定着性を兼ね合わせるため4CH定
着性を阻害する磁性粉の含有量を少くすることが極めて
有効となる。
Among resins with high melt viscosity such as styrene resin, polyester resin, butadiene resin, acrylic resin, and areic acid resin, a single substance or a copolymer of 2s or more is used. As a pressure fixing resin, a frame, natural or synthetic wax, various polyethylene waxes, amide waxes, epoxy resins may be used alone or in combination with one or more of these, ethylene vinyl acetate copolymer, and rosin resin. I can do it. The lower the melting point of these resin components, the better the fixing properties, but since toner agglomeration tends to occur, it is preferable that the resin component has a glass transition point tV of SOv or higher. In order to achieve both cohesion and fixing properties, it is extremely effective to reduce the content of magnetic powder that inhibits 4CH fixing properties.

そして本発明では必須成分として抵抗制御剤を用いてお
り、その現出は次の通りである。
In the present invention, a resistance control agent is used as an essential component, and its appearance is as follows.

磁気1儂方式を使うスリットとしては、高速での現像性
と転写性が良いことが挙げられるため、これらに強いこ
とが有効である。まず現像性から考えた場合、磁性粉の
含有量が少くしかもトナーの抵抗が低い程現俸性力\良
い。−1普通紙への転写を考えた場合、トナーの抵抗は
一般Kt!高い方が良い。しかし、高速になる程トナー
に低抵抗であっても転写での別の間mにない。これらの
ことt考慮して、トナーの抵抗ハ106〜1015Ω・
傷の範囲が良く、この範囲で高速においてにトナーの抵
抗を低くし、−万低速システムでにトナーの抵抗を高く
することが好ましい。そし【トナーの抵抗を制御する方
法としては、トナー中の磁性粉の材料の選択、磁性粉の
含有量の調整あるいに導電性物質の添加が知られている
。これらのうち最も一般的な方法は1通常導電性粒子と
して使用されるカーボンブラックの添加量を調整するこ
とである。カーホンブラックの含有量が増重とトナーの
抵抗は低下することから、その添加量に20Mt*未満
が良い。
As a slit using the magnetic one-element system, it is effective to have good development performance and transfer performance at high speed, so it is effective to have good resistance to these. First, when considering developability, the smaller the content of magnetic powder and the lower the resistance of the toner, the better the developing ability. -1 When considering transfer to plain paper, the resistance of toner is generally Kt! The higher the better. However, even if the resistance to the toner is low as the speed increases, there is no difference in the transfer process. Taking these things into account, the resistance of the toner is 106 to 1015 Ω.
It is preferable to have a good flaw range and to have low toner resistance at high speeds in this range and high toner resistance at low speed systems. [Methods for controlling the resistance of toner include selecting the material for magnetic powder in the toner, adjusting the content of magnetic powder, and adding conductive substances. Among these, the most common method is to adjust the amount of carbon black, which is usually used as conductive particles. Since the content of carphone black increases the weight and reduces the resistance of the toner, it is preferable that the amount added is less than 20 Mt*.

以下に寮施例にて1発明の詳細を述べる。The details of one invention will be described below using a dormitory example.

〔実施例1〕 ビス71ノール型エポキシ樹脂(エピコート1007 
)             67重量部マグネタイト
   (MTC−840)  52重量部カーボンブラ
ック (A!、4 −5oo )  1重量部上記組成
より成る混合−を2本ロールにて1201[て加熱混練
を行なった。冷却層シーツ)1ルに【粉砕し、10〜4
0μの粉を得た。このトナーにカーポ、ン0.5重量部
を添加し、熱固定を行ない、磁性トナーを得た。
[Example 1] Bis71nol epoxy resin (Epicote 1007
) 67 parts by weight magnetite (MTC-840) 52 parts by weight carbon black (A!, 4-5oo) 1 part by weight A mixture consisting of the above composition was heated and kneaded using two rolls at 120°C. Cooling layer sheet) [Crush into 1 ru, 10-4
A powder of 0μ was obtained. 0.5 parts by weight of carpon was added to this toner and heat-fixed to obtain a magnetic toner.

得られたトナーの特性はり25.’ am/y保磁力4
500g、抵抗3X10120・儂であった。
Characteristics of the obtained toner 25. ' am/y coercive force 4
It was 500g and the resistance was 3x10120.

次にCo−N1−p  から成る磁気ドラム上に磁気記
録ヘッドにて磁気潜*V形成し、このトナーにて磁気ブ
ラシ現偉機により顕儂化した。得られたトナーIHC晋
通紙を重ね、導電ローラにて転写し、その後オーブン定
着したところ定着性および画質がともに良好な画儂が得
られた。その時のシステムスピードハロ00■/zgc
であった。
Next, a magnetic latent*V was formed on a magnetic drum made of Co--N1-p using a magnetic recording head, and the toner was made visible using a magnetic brush generator. When the obtained toner was stacked on IHC Shintsu paper, transferred using a conductive roller, and then fixed in an oven, an image with good fixability and image quality was obtained. System speed at that time halo 00■/zgc
Met.

〔実施例2〕 スチレン−ブタジェン共重合体(日立化成製)70重量
部マグネタイト (g、、90ayub/l、IBc 
2800g ) 25重量部カーボングラツク (&J
、600    ) 5重量部上記組成″Y笑施例1と
同様の方法で調整して、す22.−鵬/f 、 IBc
 2sooa 、電気抵抗8X10’Ω・−のトナーを
得た。
[Example 2] Styrene-butadiene copolymer (manufactured by Hitachi Chemical) 70 parts by weight magnetite (g, 90 ayub/l, IBc
2800g) 25 parts by weight Carbon Gravity (&J
, 600) 5 parts by weight The above composition was adjusted in the same manner as in Example 1 to obtain 22.-Peng/f, IBc.
A toner with an electrical resistance of 8×10′Ω·− was obtained.

上記トナーを実施例1と同様に作像し、400■/ag
e  にて転写し、ヒートロールにて定着を行なった。
An image was formed using the above toner in the same manner as in Example 1, and 400 μ/ag was obtained.
The image was transferred using e and fixed using a heat roll.

得られたTh儂tff定着性および画質共に良好であっ
た。
The obtained Th-tff fixing properties and image quality were both good.

〔実施例3〕 ポリエチレンFAX (# iW’AX 200p) 
  44重量部エチレン酢ビ共重合体(AC401) 
 1.1  #マグネタイト(as 7 (1’n1s
b / t 、IHC250)  42重量部カーボン
ブラック(MA600)3重量部上記組成から混合物v
実施例1と同様に調整し、−\ g、 29.’awsu/l 、 −1nc 230抵
抗4X108Ω・傷のトナーを得た。
[Example 3] Polyethylene FAX (#iW'AX 200p)
44 parts by weight ethylene vinyl acetate copolymer (AC401)
1.1 #Magnetite (as 7 (1'n1s)
b/t, IHC250) 42 parts by weight Carbon black (MA600) 3 parts by weight Mixture v from the above composition
Adjust in the same manner as in Example 1, -\g, 29. 'awsu/l, -1nc 230 resistance 4X108Ω/scratch toner was obtained.

上記トナーを実施例1と同じ装置を用いて600 g/
JF # cで実機テストナ行ない、圧力定着機により
定着し、画倫を得た。得られた画gIはこすりに対する
定着性4良く、画質も良好であった。
Using the same equipment as in Example 1, the above toner was mixed at 600 g/
Tested on actual machine using JF#c, fixed using pressure fixing machine, and obtained image quality. The obtained image gI had good fixability 4 against rubbing and good image quality.

以上に記述の如く、本発明によれば定着性ならびK[l
質の丁ぐれた磁気*儂現儂用の磁性トナー−3:
As described above, according to the present invention, the fixing property and K[l
Poor quality magnetic *Magnetic toner for my current use - 3:

Claims (1)

【特許請求の範囲】[Claims] 主成分として常温において固体であり加熱することによ
り溶融状態になる性質を有する熱可脆性樹脂と、磁性粉
な含む磁性トナーにおいて、飽和磁束密度(#S)が1
5.ないし40.。−講u/l *保磁力IHaが20
0ないし4500m、抵抗が106から10150・0
の範囲内圧あることを特徴とする磁気潜像現像用磁性ト
ナー。
The saturation magnetic flux density (#S) is 1 in the magnetic toner, which contains a thermosetting resin as a main component that is solid at room temperature and becomes molten when heated, and a magnetic powder.
5. or 40. . -Lecture u/l *Coercive force IHa is 20
0 to 4500m, resistance 106 to 10150.0
A magnetic toner for developing a magnetic latent image, characterized by having a pressure within the range of .
JP56194211A 1981-12-02 1981-12-02 Magnetic toner Pending JPS5895752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56194211A JPS5895752A (en) 1981-12-02 1981-12-02 Magnetic toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56194211A JPS5895752A (en) 1981-12-02 1981-12-02 Magnetic toner

Publications (1)

Publication Number Publication Date
JPS5895752A true JPS5895752A (en) 1983-06-07

Family

ID=16320793

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56194211A Pending JPS5895752A (en) 1981-12-02 1981-12-02 Magnetic toner

Country Status (1)

Country Link
JP (1) JPS5895752A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02192655A (en) * 1989-01-20 1990-07-30 Mitsubishi Gas Chem Co Inc Secondary battery

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02192655A (en) * 1989-01-20 1990-07-30 Mitsubishi Gas Chem Co Inc Secondary battery

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