JPS60194464A - Carrier material - Google Patents
Carrier materialInfo
- Publication number
- JPS60194464A JPS60194464A JP59050712A JP5071284A JPS60194464A JP S60194464 A JPS60194464 A JP S60194464A JP 59050712 A JP59050712 A JP 59050712A JP 5071284 A JP5071284 A JP 5071284A JP S60194464 A JPS60194464 A JP S60194464A
- Authority
- JP
- Japan
- Prior art keywords
- carrier
- oxyquinoline
- resin
- toner
- metallic complex
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/10—Developers with toner particles characterised by carrier particles
- G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
- G03G9/1131—Coating methods; Structure of coatings
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
- G03G9/10—Developers with toner particles characterised by carrier particles
- G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
- G03G9/1138—Non-macromolecular organic components of coatings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、電子写真、静電記録などの静電潜像を現像す
る為の現像剤に使用されるキャリヤーに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to carriers used in developers for developing electrostatic latent images in electrophotography, electrostatography, and the like.
従来、静電潜像を現像剤によって可視化する方法として
は、例えば米国特許第2 、874 。A conventional method for visualizing an electrostatic latent image using a developer is, for example, US Pat. No. 2,874.
063号明細書に記載されている磁気ブラシ法、同第2
,618,552号明細書に記載されているカスケード
現像法、等が知られている。Magnetic brush method described in Specification No. 063, No. 2
, 618,552, etc. are known.
一般にこれらの現像法に用いられる現像剤としては、結
着剤中に染料、顔料を分散させた微粉末トナーと、適当
な手段により7子写真素材上に形成された静電潜像にこ
のトナーを搬送させる固体担体キャリヤーとの混合物が
用いられる。この固体担体キャリヤーはトナーと混合さ
れると、トナーに所望の摩擦電荷を付与するように作用
し、その結果トナーは潜像に搬送され、現像がなされる
。Generally, the developer used in these developing methods is a fine powder toner in which dyes and pigments are dispersed in a binder, and this toner is applied to an electrostatic latent image formed on a 7-year-old photographic material by an appropriate means. A mixture with a solid support carrier is used to convey the . When mixed with the toner, this solid support carrier acts to impart the desired triboelectric charge to the toner, so that the toner is transported to the latent image and developed.
一般の現像剤においてはその一成分としてのトナーは現
像により一部が失なわれ、その分を補給される。しかし
、もう一方の成分であるキャリヤーは現像によりほとん
ど失なわれることがなく何度もくり返して使用される為
、多数枚の複写を行なっていくに従って次のような表面
上の変化が起きる。In a general developer, a portion of toner, which is one of its components, is lost during development, and the amount is replenished. However, the other component, the carrier, is hardly lost during development and is used over and over again, so as a large number of copies are made, the following surface changes occur.
(1,) キャリヤー−キャリヤー間の衝突及びキャリ
ヤー現像器内の壁あるいはスクリュー等の各種部材との
衝突による表面状態の変化(2) 微細なトナーあるい
はトナーの構成成分のうちの一部がキャリヤーに付着あ
るいは吸着することによる表面状態の変化
一#シにキャリヤーのI・ナーへの摩擦帯電電首付−榮
能力は、キャリヤーの材質・形状により、大きく影響を
受けるため、上述の様なキャリヤーの表面状態の変化は
非画像部でのパかぶり“の増加、画像部での濃度低下、
広域の黒地の不均一性等の劣化現象を引起こし、現像剤
ごと交換しなければならない状態となってしまう。(1) Changes in the surface condition due to carrier-carrier collisions and collisions with various members such as walls or screws in the carrier developing device (2) Fine toner or some of the toner's constituent components are transferred to the carrier. Changes in the surface condition due to adhesion or adsorption - The triboelectric charging ability of the carrier to the I/N is greatly affected by the material and shape of the carrier. Changes in condition include an increase in "padding" in non-image areas, a decrease in density in image areas,
This causes deterioration phenomena such as non-uniformity of the black background over a wide area, and the entire developer must be replaced.
本発明の目的は、以下のとおりである。The objects of the present invention are as follows.
(1) トナーに対する摩擦帯電電荷の付与能力の高い
キャリヤー材の提供。(1) Providing a carrier material with high ability to impart triboelectric charge to toner.
(2) 現像剤としての寿命が長くなるようなキャリヤ
ー材の提供。(2) Providing a carrier material that has a long life as a developer.
(3) 再現性のすぐれた現像剤のためのキャリヤー材
の提供。(3) Providing a carrier material for a developer with excellent reproducibility.
(4) 高温高湿、低温低湿等環境安定性の高い現像剤
のためのキャリヤー材の提供。(4) Providing a carrier material for a developer with high environmental stability such as high temperature and high humidity, low temperature and low humidity.
(5)トナーに対する摩擦帯電性の適す1な制御。(5) Appropriate control of triboelectricity of toner.
その特徴とするところは、8−オキシキノリンの金属錯
体を含有するキャリヤー材にある。Its special feature lies in the carrier material containing a metal complex of 8-oxyquinoline.
本発明に用いられる8−オキシキノリンの金属錯体は下
図の様な構造をしている。The 8-oxyquinoline metal complex used in the present invention has a structure as shown in the figure below.
本発明はこの8−オキシキノリンの金属錯体をキャリヤ
ーに均一にコートすることで、先述の目的を達しようと
するものである。すなわち8−オキシキノリンの金属錯
体を表面に含有したキャリヤーを用いることで、ネガi
・ナーに対するマイナストリポ付与能力を向上させるこ
とが出来る。一方、従来そのポジ性が強すぎ、画像出し
耐久を行なうと、チャージ・アップ等の理由により、画
像濃度がダウンしてしまうようなポジトナーに対しては
、トリポの付与を調節し、適切なトリポ値にコントロー
ルすることが出きる。The present invention attempts to achieve the above-mentioned object by uniformly coating a carrier with this metal complex of 8-oxyquinoline. That is, by using a carrier containing a metal complex of 8-oxyquinoline on the surface, negative i
- Can improve the ability to apply negative tripo to Gnar. On the other hand, for conventional positive toners whose positive properties are too strong and the image density decreases due to charge-up or other reasons during image development durability, the application of tripo is adjusted and appropriate tripo is applied. You can control the value.
本発明において、8−オキシキノリンの金属錯体をギヤ
リヤーコアへ被覆する方法としては、8−オキシキノリ
ンの金属錯体単体を直接被覆する方法と、8−オキシキ
ノリンの金属錯体を樹脂中に分散して被覆する方法があ
る。直接被覆する方法としては、8−オキシキノリンの
金属錯体を溶剤中に溶解または分散させ、溶液中にキャ
リヤーを浸漬させる。或いは、粉末の8−オキシキノリ
ンの金属錯体をキャリヤーと乾式混合する等の方法があ
る。また樹脂中に□分散してキャリヤーに被覆する方法
としては、ギヤリヤーコアを槽内で樹脂溶液にどぶづけ
する、あるいはスプレーする、あるいは制御された流動
化ベッド法を使用する等、特に限定されるものではない
。In the present invention, the method of coating the gear core with the metal complex of 8-oxyquinoline includes a method of directly coating the metal complex of 8-oxyquinoline alone, and a method of coating the metal complex of 8-oxyquinoline by dispersing it in a resin. There is a way to do it. For direct coating, the metal complex of 8-oxyquinoline is dissolved or dispersed in a solvent, and the carrier is immersed in the solution. Alternatively, there is a method of dry mixing a powdered 8-oxyquinoline metal complex with a carrier. In addition, methods for dispersing □ in resin and coating it on the carrier are particularly limited, such as dousing or spraying the gear core in a resin solution in a tank, or using a controlled fluidized bed method. isn't it.
8−オキシキノリンを分散する為に用いられる樹脂とし
ては、従来より使用されているものがそのまま使用でき
る。例えば天然樹脂、ポリオレフィン樹脂・ポリビニル
、ポリビニリデン樹脂、フルオロカーボン樹脂、ポリア
ミド樹脂、ポリエステル樹脂、ポリウレタン樹脂、ポリ
カーボネート樹脂、フェノール構脂、アクリル樹脂、メ
ラミン樹脂、アミン樹脂、エポキシ樹脂等及びこれらの
混合物等である。As the resin used for dispersing 8-oxyquinoline, those conventionally used can be used as they are. For example, natural resins, polyolefin resins/polyvinyl, polyvinylidene resins, fluorocarbon resins, polyamide resins, polyester resins, polyurethane resins, polycarbonate resins, phenolic resins, acrylic resins, melamine resins, amine resins, epoxy resins, etc., and mixtures thereof. be.
これらの樹脂に対して、コー記8−オキシキノリンの金
属錯体の含有率は樹脂の固有抵抗及び樹脂中への分散状
態、及び被覆されたキャリヤーが使用される現像状態に
よって異なるが、概ね樹脂100重量部に対して0.1
〜20重量部が好ましい。For these resins, the content of the metal complex of Coke 8-oxyquinoline varies depending on the resistivity of the resin and the state of dispersion in the resin, and the development conditions in which the coated carrier is used, but is approximately 100% of the resin. 0.1 parts by weight
~20 parts by weight is preferred.
本発明に用いられるキャリヤーコアとしては鉄粉、フェ
ライト、ガラスど−ズ等、従来知られているものがその
まま使用できる。As the carrier core used in the present invention, conventionally known carrier cores such as iron powder, ferrite, glass beads, etc. can be used as they are.
(実施例1)
熱硬化型アクリル樹脂70重量部(固形分換算)、メラ
ミン樹脂20重量部、エポキシ樹脂10重量部と8−オ
キシキノリン・Co5重量部をキシレン/ブタノール=
7/3の混合溶剤にとかし適当な分散機によってよく混
合分散させ、樹脂固形分換算で1%の溶液を作成した。(Example 1) 70 parts by weight of thermosetting acrylic resin (in terms of solid content), 20 parts by weight of melamine resin, 10 parts by weight of epoxy resin, and 5 parts by weight of 8-oxyquinoline/Co were mixed into xylene/butanol =
The mixture was dissolved in a 7/3 mixed solvent and thoroughly mixed and dispersed using a suitable disperser to prepare a solution having a concentration of 1% in terms of resin solid content.
この溶液の中にキャリヤー鉄粉をどぶづけし、よぐIW
拌しながら加熱して溶剤を除去する。すべての溶剤を除
去後、被覆されたキャリヤーを得た。Dip the carrier iron powder into this solution and stir it.
Heat while stirring to remove the solvent. After removing all the solvent, a coated carrier was obtained.
この被覆されたキャリヤー88重量部とポリエステル樹
脂を主成分とするトナー12重量部とを77d合しブロ
ー・オフ法でトナーのトリポ電荷量を測定したところ−
10,5gc/gであった。88 parts by weight of this coated carrier and 12 parts by weight of toner whose main component is polyester resin were combined for 77 days and the tripo charge amount of the toner was measured by the blow-off method.
It was 10.5gc/g.
この現像剤を使って画像出しを行ったところ、広域の黒
地の再現性も良好であり実用上問題なく極めて良好の画
像が得られた。When images were produced using this developer, very good images were obtained with good reproducibility of black backgrounds over a wide range and without any practical problems.
さらに、この現像剤を使って30℃、85%の高温高湿
中で画像出しを行なったところ、2000枚目の画像も
、初期と変わらない良好なものであった・
(比較例1)
実施例1における8−オキシキノリンを除くこと以外は
、(実施例−1)と同様の方法で被覆すれたキャリヤー
を製造した。このキャリヤーをトナーと4F?、合した
際のトナーのトリポ電荷量は、−3,2μc/gであっ
た。この現像剤を(実施例−1)と同様に30°c80
%の環境で画像出しを行なったところ、1枚[]からカ
ブリがひどく、約50枚目では、実用の限度を越えた。Furthermore, when images were produced using this developer at 30°C and 85% high temperature and high humidity, the 2000th image was as good as the initial image (Comparative Example 1) A coated carrier was prepared in the same manner as in Example 1, except that the 8-oxyquinoline in Example 1 was omitted. Is this carrier 4F with toner? The tripo charge amount of the toner when combined was -3.2 μc/g. This developer was used at 30°c80 in the same manner as in (Example-1).
% environment, the fog was severe from the first image, and by about the 50th image, it exceeded the practical limit.
(実施例2)
実施例1における被覆する樹脂をホリアミド樹脂80重
量部、フェノール樹脂20重量部に、8−オキシキノリ
ン・Coの添加量を樹脂100重量部に対して10重量
部に、変更する以外はほぼ実施例1と同様に実施し、被
覆されたキャリヤーを得た。(Example 2) The coating resin in Example 1 was changed to 80 parts by weight of holamide resin and 20 parts by weight of phenol resin, and the amount of 8-oxyquinoline/Co added was changed to 10 parts by weight per 100 parts by weight of resin. A coated carrier was obtained by carrying out almost the same procedure as in Example 1 except for this.
得られたキャリヤー88重量部と、スチレンアクリル−
HMA−ジメチルアミノエチルメタクリレート樹脂を主
成分とするトナーを12重量部とを混合し、ブロー・オ
フ法でトナーのトリポ電荷量を測定したところ、+14
.5pc/gであった。88 parts by weight of the obtained carrier and styrene acrylic
When 12 parts by weight of a toner containing HMA-dimethylaminoethyl methacrylate resin as a main component was mixed and the tripo charge amount of the toner was measured using the blow-off method, it was found to be +14.
.. It was 5pc/g.
この現像剤を使って画像出しを行ったところ、文字舎広
域の黒地とも原稿に忠実に再現され、良好な状態を示し
た。When this developer was used to produce an image, it was found to be in good condition, with the wide black areas of the character building being faithfully reproduced in the manuscript.
(比較例2)
実施例2における8−オキシキノリンヲ除くこと以外は
(実施例2)と同様にして得られたキャリヤーを実施例
2と同様のトナーに混合し、同様にトナーのトリポ電荷
量を測定したところ、+55.28LC/gであった。(Comparative Example 2) A carrier obtained in the same manner as in Example 2 except that 8-oxyquinoline in Example 2 was removed was mixed with the same toner as in Example 2, and the toner's tripo charge amount was determined in the same manner. When measured, it was +55.28 LC/g.
この現像剤を使って画像出しを行なったところ、100
0枚目では、画像濃度が下がり、実用限度外であった。When I created an image using this developer, I found that it was 100%
On the 0th sheet, the image density decreased and was outside the practical limit.
(実施例3) 実施例1における、8−オキシキノリンC。(Example 3) 8-oxyquinoline C in Example 1.
のかわりに8−オキシキノリンCrにかえること以外は
、実施例1と同様に実施し、同様にトリポ電荷量を測定
したところ、−8、3#Lc/gを示した。また実施例
1と同様の評価を行なったところ、良好な結果を得た。The same procedure as in Example 1 was carried out except that 8-oxyquinoline Cr was used instead, and the tripo charge amount was measured in the same manner, and it was found to be -8.3 #Lc/g. Further, when the same evaluation as in Example 1 was performed, good results were obtained.
(実施例4)
実施例1における8−オキシキノリンCoのかわりに8
−オキシキノリン−Znを用いて、同様の評価を行なっ
たところやはり良好な結果を得た。(Example 4) In place of 8-oxyquinoline Co in Example 1, 8
A similar evaluation was performed using -oxyquinoline-Zn, and good results were also obtained.
出願人 キャノン株式会社Applicant: Canon Co., Ltd.
Claims (3)
を特徴とするキャリヤー材。(1) A carrier material containing a metal complex of 8-oxyquinoline.
れている特許請求の範囲第1項記載のキャリヤー材。(2) The carrier material according to claim 1, wherein a metal complex of 8-oxyquinoline is contained on the surface.
脂で被覆した特許請求の範囲第1項記載のキャリヤー材
。(3) The carrier material according to claim 1, which is coated with a resin in which a metal complex of 8-oxyquinoline is dispersed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59050712A JPS60194464A (en) | 1984-03-15 | 1984-03-15 | Carrier material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59050712A JPS60194464A (en) | 1984-03-15 | 1984-03-15 | Carrier material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60194464A true JPS60194464A (en) | 1985-10-02 |
JPH0576630B2 JPH0576630B2 (en) | 1993-10-25 |
Family
ID=12866502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59050712A Granted JPS60194464A (en) | 1984-03-15 | 1984-03-15 | Carrier material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60194464A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63177149A (en) * | 1987-01-19 | 1988-07-21 | Fujitsu Ltd | Carrier for magnetic development |
-
1984
- 1984-03-15 JP JP59050712A patent/JPS60194464A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63177149A (en) * | 1987-01-19 | 1988-07-21 | Fujitsu Ltd | Carrier for magnetic development |
Also Published As
Publication number | Publication date |
---|---|
JPH0576630B2 (en) | 1993-10-25 |
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