JPH0117580B2 - - Google Patents
Info
- Publication number
- JPH0117580B2 JPH0117580B2 JP56093330A JP9333081A JPH0117580B2 JP H0117580 B2 JPH0117580 B2 JP H0117580B2 JP 56093330 A JP56093330 A JP 56093330A JP 9333081 A JP9333081 A JP 9333081A JP H0117580 B2 JPH0117580 B2 JP H0117580B2
- Authority
- JP
- Japan
- Prior art keywords
- developer
- blade
- resin
- protrusions
- dielectric
- 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.)
- Expired
Links
- 229920005989 resin Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 9
- 239000006258 conductive agent Substances 0.000 claims description 5
- 229920001187 thermosetting polymer Polymers 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 4
- 229920005992 thermoplastic resin Polymers 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 13
- 238000004381 surface treatment Methods 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 10
- 239000003989 dielectric material Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 239000007921 spray Substances 0.000 description 7
- 239000012046 mixed solvent Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 239000004640 Melamine resin Substances 0.000 description 4
- 229920000877 Melamine resin Polymers 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229920000180 alkyd Polymers 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 238000001694 spray drying Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000019441 ethanol Nutrition 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene 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
-
- 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
- G03G9/0827—Developers with toner particles characterised by their shape, e.g. degree of sphericity
Description
【発明の詳細な説明】
本発明は、静電記録法に用いられる１成分系の
現像剤に関するものであり、さらに詳しくは、誘
電体に静電潜像を設け、現像したのち、定着せず
に誘電体上で直視またはスクリーンに像を投影
後、現像剤をブレードでクリーニングし誘電体お
よび現像剤が繰り返し使用可能な装置に用いる現
像剤に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a one-component developer used in electrostatic recording. More specifically, the present invention relates to a one-component developer used in electrostatic recording. This invention relates to a developer used in a device in which an image is projected directly onto a dielectric material or onto a screen, and then the developer is cleaned with a blade so that the dielectric material and developer can be used repeatedly.
従来のこの種の１成分系の現像剤は、熱可塑性
樹脂とマグネタイトをロールにより混練し、粉砕
後、カーボンをまぶして抵抗を低くしたものであ
る。このようにして得られる現像剤は、形状が定
まつていない角のあるものである。これを用いて
現像後、ブレードでクリーニングした場合、現像
剤がブレードと誘電体との間にかかる圧力によ
り、角ばつた部分が砕かれ、粒径の小さいものが
生じる。この砕かれた粒径の小さいものを繰り返
し使用すれば、カブリあるいは、誘電体上にフイ
ルミングを生じ、画像に悪影響を与える問題があ
つた。 A conventional one-component developer of this kind is one in which a thermoplastic resin and magnetite are kneaded with a roll, pulverized, and then sprinkled with carbon to lower the resistance. The developer thus obtained has irregular shapes and corners. When the developer is cleaned with a blade after development using this, the pressure applied between the developer blade and the dielectric material breaks up the angular parts and produces particles with small diameters. If these crushed particles with small diameters are repeatedly used, fogging or filming may occur on the dielectric material, which may adversely affect images.
本発明者らは先に、この問題を克服する現像剤
として、プレードと誘電体との間にかかる圧力で
現像剤が砕かれないような強度および角ばつたと
ころのない真球状の形状として現像剤を提案し
た。この現像剤を用いて、現像後、ブレードでク
リーニングする場合には、ブレードと誘電体の間
にかかる圧力を大きくして、クリーニングするこ
とが可能である。このような状態で繰り返し使用
を行えば、ブレードおよび誘電体の寿命を短くす
る問題がある。 The present inventors have previously developed a developer to overcome this problem, which has a strength that prevents the developer from being crushed by the pressure applied between the blade and the dielectric material, and a perfect spherical shape with no sharp edges. suggested a drug. When cleaning with a blade after development using this developer, cleaning can be performed by increasing the pressure applied between the blade and the dielectric. If the blade is used repeatedly in such a state, there is a problem that the life of the blade and the dielectric will be shortened.
本発明は、これら問題を克服する現像剤を提供
するものである。すなわち、磁性体と熱硬化性樹
脂と導電剤よりなる真球状とした現像剤本体の表
面に微小な突起を設け、誘電体にある潜像電位に
対する現像剤の静電引力を弱め、さらにはブレー
ドに対する現像剤のひつかかりを良くすることに
より、ブレードと誘電体との間にかかる圧力を小
さくし、ブレードと誘電体の繰り返し寿命を長く
すると共に、現像剤も繰り返し使用可能とするも
のである。 The present invention provides a developer that overcomes these problems. That is, minute protrusions are provided on the surface of the spherical developer body made of a magnetic material, thermosetting resin, and conductive material to weaken the electrostatic attraction of the developer to the latent image potential in the dielectric material, and furthermore, the blade By improving the grip of the developer on the blade, the pressure applied between the blade and the dielectric is reduced, the cycle life of the blade and the dielectric is extended, and the developer can be used repeatedly.
図面に本発明による現像剤の例を示す。図中の
１は磁性体と樹脂と導電剤よりなる真球状の現像
剤本体である。２は現像剤本体表面に付着してな
る突起である。磁性体は、四三酸化鉄、三二酸化
鉄のような鉄の化合物、あるいはその他金属との
複合物、または鉄、ニツケル、コバルト、マンガ
ンなどの金属もしくはそれら化合物の微粉末であ
る。現像剤本体に用いる。樹脂は、メラミン樹
脂、エポキシ樹脂、ウレタン樹脂、アルキツド樹
脂などの熱硬化性樹脂である。導電剤はカーボン
微粉末を用いる。 The drawings show examples of the developer according to the invention. 1 in the figure is a spherical developer body made of a magnetic material, resin, and conductive material. 2 is a protrusion attached to the surface of the developer body. The magnetic material is a compound of iron such as triiron tetroxide or sesquiferric oxide, or a composite with other metals, or a fine powder of a metal such as iron, nickel, cobalt, manganese, or a compound thereof. Used in the developer body. The resin is a thermosetting resin such as melamine resin, epoxy resin, urethane resin, or alkyd resin. Fine carbon powder is used as the conductive agent.
突起２は樹脂と導電剤よりなるもので、その突
起の大きさは１〜5μｍ程度のものである。この
突起に用いる樹脂としては、メラミン樹脂、エポ
キシ樹脂、アルキツド樹脂などの熱硬化性樹脂、
または、ポリエステル樹脂、ブチラール樹脂、ス
チレン−ブタジエン共重合体などの熱可塑性樹脂
がある。導電剤はカーボン微粉末を用いる。 The protrusion 2 is made of resin and a conductive agent, and the size of the protrusion is about 1 to 5 μm. The resin used for these protrusions includes thermosetting resins such as melamine resin, epoxy resin, and alkyd resin.
Alternatively, there are thermoplastic resins such as polyester resins, butyral resins, and styrene-butadiene copolymers. Fine carbon powder is used as the conductive agent.
以下、実施例を用いてさらに詳しく説明する。 The present invention will be explained in more detail below using Examples.
実施例 １
水溶性メラミン樹脂（固形分80％ 住友化学(株)製
Ｍ−３） 125ｇ
マグネタイト（戸田工業(株)製 EPT−500）80ｇ
カーボン（日本コロンビアンカーボン(株)製 コン
ダクテツクスSC） 40ｇ
水 700ｇ
上記組成物をボールミルで約２時間粉砕分散し
て得た分散液に、硬化剤（住友化学(株)製スミテツ
クスアセクレータACX）を10ｇ加え、撹拌混合
する。この分散液をスプレードライ装置（高砂熱
学工業(株)TD−10）により、造粒した結果、流動
性のよい真球状のしかも導電性のよい現像剤を得
た。Example 1 Water-soluble melamine resin (solid content 80%, M-3 manufactured by Sumitomo Chemical Co., Ltd.) 125 g Magnetite (EPT-500 manufactured by Toda Kogyo Co., Ltd.) 80 g Carbon (Conductex SC manufactured by Nippon Columbian Carbon Co., Ltd.) 40 g 700 g of water 10 g of a curing agent (Sumitex Accelerator ACX, manufactured by Sumitomo Chemical Co., Ltd.) was added to a dispersion obtained by pulverizing and dispersing the above composition in a ball mill for about 2 hours, and the mixture was stirred and mixed. This dispersion was granulated using a spray drying device (TD-10, manufactured by Takasago Thermal Engineering Co., Ltd.) to obtain a perfectly spherical developer with good fluidity and good conductivity.
次に突起を設けるための表面処理液を作製し
た。 Next, a surface treatment solution for providing protrusions was prepared.
エポキシ樹脂（シエル化学(株)エピコート828固形
分10％） 100ｇ
カーボン（日本コロンビアンカーボン(株)コンダク
テツクスSC） 10ｇ
上記組成物をボールミルで約２時間粉砕分散し
て得た分散液に硬化剤（化薬ターリー(株)SCare
661）10ｇを加え、混合撹拌し、表面処理液を得
た。Epoxy resin (Siel Kagaku Co., Ltd. Epicoat 828 solid content 10%) 100 g Carbon (Japan Columbian Carbon Co., Ltd. Conductex SC) 10 g The above composition was crushed and dispersed in a ball mill for about 2 hours, and the resulting dispersion was added with a curing agent ( Kayaku Turley Co., Ltd. SCare
661) was added and mixed and stirred to obtain a surface treatment liquid.
前述の現像剤10ｇに対し表面処理液を10ｇ加
え、さらにメチルエチルケトンとエチルアルコー
ルとの１：１混合溶媒を20ｇ加えて撹拌混合し、
スプレー圧1.2Kg／cm2でスプレードライ装置中に
噴霧して、表面に突起を設けた現像剤を得た。
160℃で３時間エージング処理後、この現像剤を
約10〜30μｍの粒径に分級し、誘電体上に得た静
電潜像を現像したところ、カブリのない画像が得
られた。その後、ブレードによるクリーニングを
行つたところ、線圧約10ｇ／cmでクリーニングで
きた。また、表面に突起を設けた現像剤を繰り返
し使用しても、ブレードで突起が取れカブりを生
じることはなかつた。 Add 10g of the surface treatment liquid to 10g of the developer described above, and further add 20g of a 1:1 mixed solvent of methyl ethyl ketone and ethyl alcohol and mix with stirring.
The developer was sprayed into a spray dryer at a spray pressure of 1.2 Kg/cm 2 to obtain a developer having projections on its surface.
After aging at 160 DEG C. for 3 hours, this developer was classified into particle sizes of about 10 to 30 .mu.m, and the electrostatic latent image obtained on the dielectric was developed, resulting in a fog-free image. Thereafter, cleaning with a blade was performed with a linear pressure of approximately 10 g/cm. Furthermore, even when a developer with protrusions on its surface was repeatedly used, the protrusions were removed by the blade and no fogging occurred.
実施例 ２
ポリエステル樹脂（東洋紡績(株)製バイロン200）
10ｇをモノクロルベンゼンとジクロルエタンとの
３：１の混合溶媒90ｇに溶解し、カーボン（日本
コロンビアンカーボン(株)製コンダクテツクスSC）
10ｇを加えて、ボールミルで２時間粉砕分散を行
い、表面処理液を得た。Example 2 Polyester resin (Vylon 200 manufactured by Toyobo Co., Ltd.)
Dissolve 10g in 90g of a 3:1 mixed solvent of monochlorobenzene and dichloroethane, and add carbon (Conductex SC manufactured by Nippon Columbian Carbon Co., Ltd.).
10 g was added and pulverized and dispersed in a ball mill for 2 hours to obtain a surface treatment liquid.
次に、実施例１の現像剤（表面処理していない
もの）10ｇに対し、上記の表面処理液を10ｇ加
え、さらに、前述の混合溶媒10ｇを加えて撹拌混
合し、スプレー圧1.2Kg／cm2でスプレードライ装
置中に噴霧し、表面に突起を設けた現像剤を得
た。60℃で２時間乾燥後、この現像剤を約10〜
30μｍの粒径に分級し、誘電体上に得た静電潜像
を現像したところ、カブリのない画像が得られ
た。その後、ブレードでクリーニングを行つたと
ころ、線圧約８ｇ／cmの圧力で、容易にクリーニ
ングできた。しかも繰り返し使用に対しても突起
が取れてカブリを生じることはなかつた。 Next, 10 g of the above surface treatment liquid was added to 10 g of the developer of Example 1 (not surface treated), and 10 g of the above mixed solvent was added and mixed with stirring, and the spray pressure was 1.2 Kg/cm. In step 2 , the developer was sprayed into a spray drying device to obtain a developer with protrusions on the surface. After drying at 60℃ for 2 hours, apply this developer to about 10~
When the particles were classified to a particle size of 30 μm and the electrostatic latent image obtained on the dielectric material was developed, a fog-free image was obtained. Thereafter, when cleaning was performed with a blade, the cleaning was easily performed with a linear pressure of about 8 g/cm. Furthermore, even after repeated use, the protrusions did not come off and no fogging occurred.
実施例 ３
実施例１と同様にして、マグネタイトの代わり
に微細鉄粉（関東電化工業(株)製）を50ｇ用いて分
散液を作製し、造粒したところ、真球状で導電性
の良い現像剤を得た。Example 3 In the same manner as in Example 1, a dispersion was prepared using 50 g of fine iron powder (manufactured by Kanto Denka Kogyo Co., Ltd.) instead of magnetite and granulated. obtained the drug.
次に突起を設けるための表面処理液を作製し
た。 Next, a surface treatment solution for providing protrusions was prepared.
アルキツド樹脂（大日本インキ(株)製、ベツコゾー
ル EZ−3020−60 固形分10％） 80ｇ
メラミン樹脂（大日本インキ(株)製 スーパーベツ
カミン Ｌ−121−60 固形分10％） 20ｇ
カーボン（日本コロンビアンカーボン(株)製コンダ
クテツクスSC） ８ｇ
上記組成物をボールミルで２時間粉砕分散し、
表面処理液を得た。Alkyd resin (Dainippon Ink Co., Ltd., Vetsukosol EZ-3020-60, solid content 10%) 80g Melamine resin (Dainippon Ink Co., Ltd., Super Betsucomin L-121-60, solid content 10%) 20g Carbon (Japan Conductex SC (manufactured by Columbia Carbon Co., Ltd.) 8 g The above composition was pulverized and dispersed in a ball mill for 2 hours,
A surface treatment solution was obtained.
ここで得た現像剤10ｇに対し、表面処理液を
13.5ｇ加え、さらにキシレンとｎ−ブタノールと
の４：１の混合溶媒10ｇを加えて撹拌混合し、ス
プレー圧1.2Kg／cm2でスプレードライ装置中に噴
霧し、表面に突起を設けた現像剤を得た。140℃
で３時間のエージング処理後、この現像剤を約10
〜30μｍの粒径に分級した。次に誘電体上に得た
静電潜像を現像し、その後、ブレードで現像剤の
クリーニングを行つたところ、線圧約10ｇ／cmの
圧力で容易にクリーニングできた。また繰り返し
使用をしても、なんら問題はなかつた。 Add surface treatment liquid to 10g of developer obtained here.
Add 13.5g and further add 10g of a 4:1 mixed solvent of xylene and n-butanol, mix with stirring, and spray into a spray drying device at a spray pressure of 1.2Kg/cm 2 to create a developer with protrusions on the surface. I got it. 140℃
After aging for 3 hours at
The particles were classified to a particle size of ~30 μm. Next, the electrostatic latent image obtained on the dielectric material was developed, and then the developer was cleaned with a blade, and the cleaning was easily performed with a linear pressure of about 10 g/cm. There were no problems even after repeated use.
実施例 ４
ブチラール樹脂（積水化学工業(株)製エスレツク
BM−２）10ｇをトルエンとエチルアルコールと
の１：１混合溶媒90ｇに溶解し、カーボン（日本
コロンビアンカーボン(株)製コンダクテツクスSC）
を８ｇ加え、ボールミルで２時間粉砕分散を行い
表面処理液を得た。Example 4 Butyral resin (Sekisui Chemical Co., Ltd.)
BM-2) 10g was dissolved in 90g of a 1:1 mixed solvent of toluene and ethyl alcohol, and carbon (Conductex SC manufactured by Nippon Columbian Carbon Co., Ltd.) was dissolved.
8g of was added and pulverized and dispersed in a ball mill for 2 hours to obtain a surface treatment liquid.
次に実施例３で得た現像剤（表面処理していな
いもの）10ｇに対し、前記表面処理液13.5ｇを加
え、さらに、前述の混合溶媒を10ｇ加え、撹拌混
合した後、スプレー圧1.2Kg／cm2でスプレードラ
イ装置中に噴霧し、表面に突起を設けた現像剤を
得た。60℃で２時間、乾燥後、この現像剤を約10
〜30μｍの粒径に分級し、誘電体上の静電潜像を
現像したところ、良好な画像を得た。その後、ブ
レードでクリーニングを行つたところ、線圧約８
ｇ／cmの圧力で容易にクリーニングできた。しか
も繰り返し使用してもカブリを生じることはなか
つた。 Next, to 10 g of the developer obtained in Example 3 (without surface treatment), 13.5 g of the surface treatment liquid was added, and then 10 g of the above mixed solvent was added, stirred and mixed, and the spray pressure was 1.2 kg. /cm 2 into a spray dryer to obtain a developer with projections on the surface. After drying at 60℃ for 2 hours, apply this developer to about 10℃.
When the particles were classified to a particle size of ~30 μm and the electrostatic latent image on the dielectric was developed, a good image was obtained. After that, when I cleaned it with a blade, the linear pressure was about 8.
It was easy to clean with a pressure of g/cm. Furthermore, no fogging occurred even after repeated use.
以上のように、本発明の突起を設けた現像剤
は、誘電体上にある潜像電位に対する現像剤の静
電引力を突起で弱め、しかも、ブレードに対する
現像剤のひつかかりを良くすることにより、ブレ
ードと誘電体との間にかかる圧力を小さくしてク
リーニングできる効果がある。従つて、ブレード
および誘電体の繰り返し寿命を長くする効果もあ
る。 As described above, the developer provided with the protrusions of the present invention weakens the electrostatic attraction of the developer to the latent image potential on the dielectric material with the protrusions, and also improves the grip of the developer on the blade. This has the effect of cleaning by reducing the pressure applied between the blade and the dielectric. Therefore, there is also the effect of lengthening the cycle life of the blade and the dielectric.
図面は本発明の現像剤の構成例を示す模式図で
ある。
１……真球状の現像剤、２……突起。
The drawings are schematic diagrams showing an example of the structure of the developer of the present invention. 1...Spherical developer, 2...Protrusions.
Claims (1)
状の現像剤本体の表面に突起を設けたことを特徴
とする現像剤。 ２ 前記突起が熱硬化性樹脂または熱可塑性樹脂
と導電剤よりなる特許請求の範囲第１項記載の現
像剤。[Scope of Claims] 1. A developer characterized in that a protrusion is provided on the surface of a spherical developer body made of a magnetic material, a thermosetting resin, and a conductive agent. 2. The developer according to claim 1, wherein the projections are made of a thermosetting resin or a thermoplastic resin and a conductive agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56093330A JPS57207259A (en) | 1981-06-16 | 1981-06-16 | Developer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56093330A JPS57207259A (en) | 1981-06-16 | 1981-06-16 | Developer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57207259A JPS57207259A (en) | 1982-12-18 |
| JPH0117580B2 true JPH0117580B2 (en) | 1989-03-31 |
Family
ID=14079250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56093330A Granted JPS57207259A (en) | 1981-06-16 | 1981-06-16 | Developer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57207259A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4794651A (en) * | 1984-12-10 | 1988-12-27 | Savin Corporation | Toner for use in compositions for developing latent electrostatic images, method of making the same, and liquid composition using the improved toner |
| US5192638A (en) * | 1984-12-10 | 1993-03-09 | Spectrum Sciences B.V. | Toner for use in compositions for developing latent electrostatic images, method of making the same, and liquid composition using the improved toner |
| SE456119B (en) * | 1985-09-20 | 1988-09-05 | Casco Nobel Ab | Toner particles for electrophotographic copying |
| JPH01500621A (en) * | 1987-03-18 | 1989-03-01 | 日本ゼオン株式会社 | Toner particles for electrophotographic reproduction and method for producing the same |
| JP6252539B2 (en) * | 2015-04-06 | 2017-12-27 | 京セラドキュメントソリューションズ株式会社 | Magnetic toner |
| JP6665808B2 (en) * | 2017-02-24 | 2020-03-13 | 京セラドキュメントソリューションズ株式会社 | Magnetic toner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5359430A (en) * | 1976-06-09 | 1978-05-29 | Konishiroku Photo Ind Co Ltd | Electrostatic latent image developer |
| JPS5453538A (en) * | 1977-10-05 | 1979-04-26 | Matsushita Electric Ind Co Ltd | Image forming particles |
| JPS54121745A (en) * | 1978-03-14 | 1979-09-21 | Minolta Camera Co Ltd | Magnetic toner |
| JPS5526518A (en) * | 1978-08-15 | 1980-02-26 | Hitachi Metals Ltd | Magnetic toner |
-
1981
- 1981-06-16 JP JP56093330A patent/JPS57207259A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5359430A (en) * | 1976-06-09 | 1978-05-29 | Konishiroku Photo Ind Co Ltd | Electrostatic latent image developer |
| JPS5453538A (en) * | 1977-10-05 | 1979-04-26 | Matsushita Electric Ind Co Ltd | Image forming particles |
| JPS54121745A (en) * | 1978-03-14 | 1979-09-21 | Minolta Camera Co Ltd | Magnetic toner |
| JPS5526518A (en) * | 1978-08-15 | 1980-02-26 | Hitachi Metals Ltd | Magnetic toner |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57207259A (en) | 1982-12-18 |
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