JPS6327854A - Toner for electrophotography - Google Patents
Toner for electrophotographyInfo
- Publication number
- JPS6327854A JPS6327854A JP61172441A JP17244186A JPS6327854A JP S6327854 A JPS6327854 A JP S6327854A JP 61172441 A JP61172441 A JP 61172441A JP 17244186 A JP17244186 A JP 17244186A JP S6327854 A JPS6327854 A JP S6327854A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- charge control
- control agent
- agent
- particles
- 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
Links
- 239000011347 resin Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 abstract description 41
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 3
- 239000011247 coating layer Substances 0.000 abstract description 2
- 238000007786 electrostatic charging Methods 0.000 abstract 4
- 239000003086 colorant Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011802 pulverized particle Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- G03G9/0825—Developers with toner particles characterised by their structure; characterised by non-homogenuous distribution of components
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
（ａ）産業上の利用分野
この発明は、複写機等の電子写真装置の現像剤として用
いられる電子写真用トナーに関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to an electrophotographic toner used as a developer for electrophotographic devices such as copying machines.
（ｂｌ従来の技術
複写機等に用いられるトナーは通常、樹脂１着色剤およ
び帯電調整剤を混合したものが用いられている。このト
ナーの製造方法は第４図に示すように、まず、■樹脂１
着色剤、帯電調整剤を所定の比率で計量し混合する。つ
ぎに■低温加熱をし前記樹脂を軟化状態にして樹脂中に
着色剤や帯電調整剤を均一に分散させ、混練する。これ
を自然冷却などにより冷却させた後、■力・７タミルや
ジェットミル等を用いて直径ＩＱ１１ｍ程度に粉砕する
。さらに、■粗粒径のものや微粒径のものを取り除いて
平均粒径が１０μｍ程度の製品（トナー）ができあがる
。(bl) Conventional Technology The toner used in copying machines, etc. is usually a mixture of a resin 1 colorant and a charge control agent.The method for producing this toner is as shown in Figure 4. resin 1
The coloring agent and charge control agent are measured and mixed in a predetermined ratio. Next, (1) the resin is heated at a low temperature to soften it, and the coloring agent and charge control agent are uniformly dispersed in the resin, followed by kneading. After cooling this by natural cooling etc., it is pulverized to a diameter of about IQ11m using a force 7 mill, jet mill, etc. Furthermore, (2) coarse particles and fine particles are removed to produce a product (toner) with an average particle size of about 10 μm.
（Ｃ）発明が解決しようとする問題点
上述したように従来は、帯電調整剤を樹脂中に均一に分
散させて製品（トナー）としていたため、帯電調整剤は
トナーの内部にも表面にも分散していた。しかしながら
、トナーを鉄粉との摩擦等により帯電させる場合、この
帯電現象に関与するのはトナー表面に分散している帯電
調整剤が殆どであり、トナー内部の帯電調整剤は殆どそ
の役割を果たすことがなく無意味なものである。また、
■混合工程や■混練工程で樹脂と帯電調整剤との混合・
混練を行ってもトナー表面に帯電調整剤が均一に分散さ
れない場合があり、トナーが均一に帯電されないことが
あった。(C) Problems to be Solved by the Invention As mentioned above, in the past, a product (toner) was made by uniformly dispersing a charge control agent in a resin, so the charge control agent was applied both inside and on the surface of the toner. It was dispersed. However, when toner is charged by friction with iron powder, etc., most of what is involved in this charging phenomenon is the charge control agent dispersed on the toner surface, and the charge control agent inside the toner mostly plays that role. It is meaningless and meaningless. Also,
■ Mixing and mixing of resin and charge control agent in the mixing process and ■ kneading process.
Even when kneading is performed, the charge control agent may not be uniformly dispersed on the toner surface, and the toner may not be uniformly charged.
この発明は上記の問題点に鑑み、トナーの表面部分にだ
け帯電調整剤を分散させることにより帯電調整剤の無駄
がな（、しかも均一に帯電される電子写真用トナーを提
供することを目的とする。In view of the above problems, it is an object of the present invention to provide an electrophotographic toner that does not waste the charge control agent (and is charged uniformly) by dispersing the charge control agent only on the surface portion of the toner. do.
（ｄ）問題点を解決するための手段
この発明の電子写真用トナーは、帯電調整剤を含まない
トナー母体の外面に帯電調整剤粒子または帯電調整剤を
含む樹脂を有することを特徴とする。(d) Means for Solving the Problems The electrophotographic toner of the present invention is characterized in that it has charge control agent particles or a resin containing a charge control agent on the outer surface of a toner matrix that does not contain a charge control agent.
（ｅ）作用
この発明においては、トナー母体の外面に帯電調整剤粒
子が分散、または帯電調整剤を含む樹脂層が形成される
ため、トナーが鉄粉等によって摩擦帯電されるときに均
一に帯電される。(e) Effect In this invention, charge control agent particles are dispersed on the outer surface of the toner base, or a resin layer containing the charge control agent is formed, so that when the toner is frictionally charged with iron powder etc., it is uniformly charged. be done.
（ｆ）実施例
第１図はこの発明の実施例である複写機のトナーの断面
を表した図である。トナー母体ｌの外表面に帯電調整剤
粒子２が融着されている。(f) Embodiment FIG. 1 is a cross-sectional view of a toner in a copying machine according to an embodiment of the present invention. Charge control agent particles 2 are fused to the outer surface of the toner base 1.
このトナーの製造方法を第２図に表す。以下この製造方
法を説明する。図において番号は製造工程順序を表して
いる。The method for manufacturing this toner is shown in FIG. This manufacturing method will be explained below. In the figure, the numbers represent the order of manufacturing steps.
まず、チップ状の樹脂と粉末状の着色剤とをミキサー等
で充分に混合する（第１の工程）。これを加熱ロール等
を用いて溶融または軟化状態で混練し、樹脂中に着色剤
を均一に分散させる（第２の工程）。このようにして混
練された樹脂および着色剤を自然冷却等により冷却させ
、ハンマミル等による粗粉砕やジェットミル等により微
粉砕を行い１０μｍ程度の粒子とする（第３の工程）。First, a chip-shaped resin and a powdered colorant are sufficiently mixed using a mixer or the like (first step). This is kneaded in a melted or softened state using a heating roll or the like to uniformly disperse the colorant in the resin (second step). The thus kneaded resin and colorant are cooled by natural cooling or the like, and then coarsely pulverized using a hammer mill or the like or finely pulverized using a jet mill or the like to obtain particles of approximately 10 μm (third step).
粉砕された粒子のうち粗粒子や微粒子を取り除いて平均
粒径が１０μｍ程度になるように分級を行う（第４の工
程）。こうしてできた粒子がトナー母体であり、このト
ナー母体に帯電調整剤の粉末を加えて混合しく第５の工
程）、低温加熱を行う（第６の工程）。この加熱によっ
てトナー母体の表面に帯電調整剤が融着される。これを
常温に冷却することにより製品（トナー）が出来上がる
。Coarse particles and fine particles are removed from the pulverized particles, and the particles are classified so that the average particle size is about 10 μm (fourth step). The particles thus formed are a toner matrix, and a charge control agent powder is added to the toner matrix and mixed (fifth step), followed by low-temperature heating (sixth step). This heating causes the charge control agent to be fused to the surface of the toner base. By cooling this to room temperature, a product (toner) is completed.
このようにして製造されたトナーは第１図に示したトナ
ー母体１には帯電調整剤が含まれず、表面にのみ帯電調
整剤２が融着している。In the toner manufactured in this manner, the toner matrix 1 shown in FIG. 1 does not contain a charge control agent, and the charge control agent 2 is fused only to the surface.
第３装置および（Ｂｌはこの発明の他の実施例であるト
ナーの断面を表した図である。FIG. 3 is a cross-sectional view of a third device and a toner according to another embodiment of the present invention.
の実施例と同様にして第１の工程〜第５の工程のにより
トナー母体と帯電調整剤と均一に混合させたのち粉砕機
等によりトナー母体が粉砕されない程度の弱い衝撃（圧
力）を加え、トナー母体の表面に帯電調整剤を圧着させ
る。After uniformly mixing the toner base and the charge control agent in the first to fifth steps in the same manner as in Example 1, a pulverizer or the like applies a weak impact (pressure) to the extent that the toner base is not crushed. A charge control agent is pressed onto the surface of the toner base.
また、第３図（Ｂｌはトナー母体１の表面に樹脂と帯電
調整剤とからなるコーティング層３を設けたものであり
、このトナーの製造方法は、前述の実施例と同様に第１
の工程〜第４の工程でトナー母体を形成する。こののち
、樹脂中に帯電調整剤を分散させたコーティング剤でト
ナー母体をコーティングする。In addition, FIG. 3 (Bl is a toner base body 1 with a coating layer 3 made of a resin and a charge control agent provided on the surface of the toner base 1, and the manufacturing method of this toner is the same as in the above-mentioned embodiment.
A toner matrix is formed in steps 1 to 4. Thereafter, the toner base is coated with a coating agent in which a charge control agent is dispersed in a resin.
上記のようなトナーは帯電に関与しないトナーの内部す
なわち、トナー母体ｌには帯電調整剤が含まれていない
ため無駄な帯電調整剤を使うことがなくコスト的に安価
となる。また、トナー母体１が形成されたのちにその表
面に帯電調整剤２または帯電調整剤を含むコーティング
剤３を付着させるため、帯電調整剤がトナー１１体１の
表面に均一に分散されて帯電性が不安定になるのを防止
す “ることができる。The above-mentioned toner does not contain a charge adjusting agent inside the toner that does not take part in charging, that is, the toner matrix l, so that unnecessary charge adjusting agent is not used and the cost is low. In addition, since the charge control agent 2 or the coating agent 3 containing the charge control agent is attached to the surface of the toner base 1 after the toner base 1 is formed, the charge control agent is uniformly dispersed on the surface of the toner body 1 and the chargeability is improved. It is possible to “prevent” from becoming unstable.
（ｇ１発明の効果
この発明によれば、トナー母体の表面に帯電調整剤が分
散されているためトナーの帯電性を安定させることがで
きる。また、トナーの内部に不必要な帯電調整剤を用い
ることがないため製造コストを安価にすることができる
。(g1 Effects of the Invention According to this invention, since the charge control agent is dispersed on the surface of the toner matrix, the chargeability of the toner can be stabilized. Also, an unnecessary charge control agent is not used inside the toner. Since this process does not occur, manufacturing costs can be reduced.
第１図はこの発明の実施例であるトナーの断面図、第２
図はそのトナーの製造工程を表した図、第３装置および
ｆＢｌは他の実施例であるトナーの断面図、第４図は従
来のトナーの製造工程を表した図である。
１−トナー母体、
２−帯電調整剤、
３−コーティング剤（樹脂＋帯電調整剤）。FIG. 1 is a cross-sectional view of a toner according to an embodiment of the present invention, and FIG.
The figure shows the toner manufacturing process, the third device and fB1 are cross-sectional views of another embodiment of the toner, and FIG. 4 is a diagram showing the conventional toner manufacturing process. 1 - Toner base, 2 - Charge control agent, 3 - Coating agent (resin + charge control agent).
Claims (1)
整剤粒子または帯電調整剤を含む樹脂を有する電子写真
用トナー。(1) An electrophotographic toner having charge control agent particles or a resin containing a charge control agent on the outer surface of a toner matrix that does not contain a charge control agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61172441A JPS6327854A (en) | 1986-07-21 | 1986-07-21 | Toner for electrophotography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61172441A JPS6327854A (en) | 1986-07-21 | 1986-07-21 | Toner for electrophotography |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6327854A true JPS6327854A (en) | 1988-02-05 |
Family
ID=15942041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61172441A Pending JPS6327854A (en) | 1986-07-21 | 1986-07-21 | Toner for electrophotography |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6327854A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5244768A (en) * | 1991-02-15 | 1993-09-14 | Fuji Xerox Co., Ltd. | Manufacturing process for an electrophotographic toner |
| US5484677A (en) * | 1991-11-15 | 1996-01-16 | Fuji Xerox Co., Ltd. | Microcapsule and microcapsule toner |
| EP1213620A3 (en) * | 2000-12-06 | 2002-11-06 | Seiko Epson Corporation | Toner and image forming apparatus using the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5528032A (en) * | 1978-08-18 | 1980-02-28 | Hitachi Metals Ltd | Electrostatic transfer type magnetic toner and production thereof |
| JPS5664352A (en) * | 1979-10-30 | 1981-06-01 | Canon Inc | Magnetic developer |
| JPS5754953A (en) * | 1980-08-11 | 1982-04-01 | Xerox Corp | Method of producing toner composition |
| JPS57125943A (en) * | 1981-01-30 | 1982-08-05 | Canon Inc | Method for developing electrostatic latent image |
-
1986
- 1986-07-21 JP JP61172441A patent/JPS6327854A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5528032A (en) * | 1978-08-18 | 1980-02-28 | Hitachi Metals Ltd | Electrostatic transfer type magnetic toner and production thereof |
| JPS5664352A (en) * | 1979-10-30 | 1981-06-01 | Canon Inc | Magnetic developer |
| JPS5754953A (en) * | 1980-08-11 | 1982-04-01 | Xerox Corp | Method of producing toner composition |
| JPS57125943A (en) * | 1981-01-30 | 1982-08-05 | Canon Inc | Method for developing electrostatic latent image |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5244768A (en) * | 1991-02-15 | 1993-09-14 | Fuji Xerox Co., Ltd. | Manufacturing process for an electrophotographic toner |
| US5484677A (en) * | 1991-11-15 | 1996-01-16 | Fuji Xerox Co., Ltd. | Microcapsule and microcapsule toner |
| EP1213620A3 (en) * | 2000-12-06 | 2002-11-06 | Seiko Epson Corporation | Toner and image forming apparatus using the same |
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