JPH0243564A - Toner for electrophotography - Google Patents
Toner for electrophotographyInfo
- Publication number
- JPH0243564A JPH0243564A JP63193420A JP19342088A JPH0243564A JP H0243564 A JPH0243564 A JP H0243564A JP 63193420 A JP63193420 A JP 63193420A JP 19342088 A JP19342088 A JP 19342088A JP H0243564 A JPH0243564 A JP H0243564A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- particles
- particle size
- fine silica
- average particle
- 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
- 239000002245 particle Substances 0.000 claims abstract description 53
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 36
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 8
- 239000011230 binding agent Substances 0.000 claims abstract description 6
- 239000003086 colorant Substances 0.000 claims abstract description 6
- 239000010419 fine particle Substances 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims 1
- 239000000049 pigment Substances 0.000 description 6
- 229910002012 Aerosil® Inorganic materials 0.000 description 4
- 239000000969 carrier Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- -1 ethylene, propylene, butylene Chemical group 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 235000010724 Wisteria floribunda Nutrition 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- UZKWTJUDCOPSNM-UHFFFAOYSA-N 1-ethenoxybutane Chemical compound CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- SBYMUDUGTIKLCR-UHFFFAOYSA-N 2-chloroethenylbenzene Chemical compound ClC=CC1=CC=CC=C1 SBYMUDUGTIKLCR-UHFFFAOYSA-N 0.000 description 1
- JQXYBDVZAUEPDL-UHFFFAOYSA-N 2-methylidene-5-phenylpent-4-enoic acid Chemical compound OC(=O)C(=C)CC=CC1=CC=CC=C1 JQXYBDVZAUEPDL-UHFFFAOYSA-N 0.000 description 1
- XVTXLKJBAYGTJS-UHFFFAOYSA-N 2-methylpenta-1,4-dien-3-one Chemical compound CC(=C)C(=O)C=C XVTXLKJBAYGTJS-UHFFFAOYSA-N 0.000 description 1
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000003801 Castanea crenata Nutrition 0.000 description 1
- 244000209117 Castanea crenata Species 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical class C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- XZKRXPZXQLARHH-UHFFFAOYSA-N buta-1,3-dienylbenzene Chemical compound C=CC=CC1=CC=CC=C1 XZKRXPZXQLARHH-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 1
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- PBZROIMXDZTJDF-UHFFFAOYSA-N hepta-1,6-dien-4-one Chemical compound C=CCC(=O)CC=C PBZROIMXDZTJDF-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000006233 lamp black Substances 0.000 description 1
- PBOSTUDLECTMNL-UHFFFAOYSA-N lauryl acrylate Chemical compound CCCCCCCCCCCCOC(=O)C=C PBOSTUDLECTMNL-UHFFFAOYSA-N 0.000 description 1
- MOUPNEIJQCETIW-UHFFFAOYSA-N lead chromate Chemical compound [Pb+2].[O-][Cr]([O-])(=O)=O MOUPNEIJQCETIW-UHFFFAOYSA-N 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- XJRBAMWJDBPFIM-UHFFFAOYSA-N methyl vinyl ether Chemical compound COC=C XJRBAMWJDBPFIM-UHFFFAOYSA-N 0.000 description 1
- CXKWCBBOMKCUKX-UHFFFAOYSA-M methylene blue Chemical compound [Cl-].C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 CXKWCBBOMKCUKX-UHFFFAOYSA-M 0.000 description 1
- 150000005673 monoalkenes Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- HILCQVNWWOARMT-UHFFFAOYSA-N non-1-en-3-one Chemical compound CCCCCCC(=O)C=C HILCQVNWWOARMT-UHFFFAOYSA-N 0.000 description 1
- 229940065472 octyl acrylate Drugs 0.000 description 1
- ANISOHQJBAQUQP-UHFFFAOYSA-N octyl prop-2-enoate Chemical compound CCCCCCCCOC(=O)C=C ANISOHQJBAQUQP-UHFFFAOYSA-N 0.000 description 1
- UCUUFSAXZMGPGH-UHFFFAOYSA-N penta-1,4-dien-3-one Chemical class C=CC(=O)C=C UCUUFSAXZMGPGH-UHFFFAOYSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- WRAQQYDMVSCOTE-UHFFFAOYSA-N phenyl prop-2-enoate Chemical compound C=CC(=O)OC1=CC=CC=C1 WRAQQYDMVSCOTE-UHFFFAOYSA-N 0.000 description 1
- 229920002285 poly(styrene-co-acrylonitrile) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229940051201 quinoline yellow Drugs 0.000 description 1
- 235000012752 quinoline yellow Nutrition 0.000 description 1
- IZMJMCDDWKSTTK-UHFFFAOYSA-N quinoline yellow Chemical compound C1=CC=CC2=NC(C3C(C4=CC=CC=C4C3=O)=O)=CC=C21 IZMJMCDDWKSTTK-UHFFFAOYSA-N 0.000 description 1
- 239000004172 quinoline yellow Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 235000013799 ultramarine blue Nutrition 0.000 description 1
- KOZCZZVUFDCZGG-UHFFFAOYSA-N vinyl benzoate Chemical compound C=COC(=O)C1=CC=CC=C1 KOZCZZVUFDCZGG-UHFFFAOYSA-N 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- FUSUHKVFWTUUBE-UHFFFAOYSA-N vinyl methyl ketone Natural products CC(=O)C=C FUSUHKVFWTUUBE-UHFFFAOYSA-N 0.000 description 1
- XOSXWYQMOYSSKB-LDKJGXKFSA-L water blue Chemical compound CC1=CC(/C(\C(C=C2)=CC=C2NC(C=C2)=CC=C2S([O-])(=O)=O)=C(\C=C2)/C=C/C\2=N\C(C=C2)=CC=C2S([O-])(=O)=O)=CC(S(O)(=O)=O)=C1N.[Na+].[Na+] XOSXWYQMOYSSKB-LDKJGXKFSA-L 0.000 description 1
- 239000001993 wax 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
- G03G9/097—Plasticisers; Charge controlling agents
- G03G9/09708—Inorganic compounds
- G03G9/09725—Silicon-oxides; Silicates
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、電気的な潜像を現像するための電子写真用ト
ナーに関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to electrophotographic toners for developing electrical latent images.
従来の技術
従来、電子写真感光間の上に形成された静電潜像を顕像
化するのに用いられる電子写真用現像剤としては、ポリ
スチレン、スチレン−ブタジェン共重合体、ポリエステ
ル等の樹脂類にカーボンブラック、フタロシアニンブル
ー等の顔料又は染料を着色剤として使用し、溶融混練後
、粉砕して得られたトナーよりなる一成分現像剤、或い
は、キャリアとして平均粒径がトナーの粒径とほぼ同じ
か、ないしは５００１１ｍまでのガラスピーズ、鉄、ニ
ッケル、フェライト等の粒子、おるいはこれ等に種々の
樹脂を被覆したものに、トナーを混ぜ合わせた二成分現
像剤が一般に用いられている。Conventional technology Conventionally, as an electrophotographic developer used to visualize an electrostatic latent image formed on an electrophotographic photosensitive layer, resins such as polystyrene, styrene-butadiene copolymer, and polyester have been used. A one-component developer consisting of a toner obtained by melt-kneading and pulverizing a pigment or dye such as carbon black or phthalocyanine blue as a coloring agent, or a carrier whose average particle size is approximately the same as that of the toner. A two-component developer is generally used in which toner is mixed with particles of glass beads, iron, nickel, ferrite, etc., or particles of the same or up to 50011 m, or particles coated with various resins.
しかしながら、これ等の現像剤だけでは、所望の帯電量
、帯電速度、電荷交換性、帯電の均一性、画質の環境依
存性及び現像剤の耐久性等が得られない。そのため、し
ばしば、帯電コントローラーを添加剤として加える試み
が行われている。However, with these developers alone, the desired amount of charge, charging speed, charge exchangeability, uniformity of charging, environmental dependence of image quality, durability of the developer, etc. cannot be obtained. Therefore, attempts are often made to add charge controllers as additives.
発明が解決しようとする課題
例えば、負帯電性の場合、シリカが使用されているが、
現像性やトナーの電荷交換性が悪く、逆極性トナーが生
じ易く、カブ１ノか発生しやすいという問題があった。Problems to be Solved by the Invention For example, silica is used in the case of negative chargeability, but
There were problems in that the developability and charge exchangeability of the toner were poor, toner of opposite polarity was likely to be produced, and fog was likely to be produced.
また、正帯電性トナーについて、シリカを用いることも
知られているが、その場合も逆、極性トナーによるカブ
リが生じやすい。It is also known to use silica as a positively chargeable toner, but in that case as well, fogging is likely to occur due to the oppositely polarized toner.
一方、特開昭６２−１２９８６６号公報には、シリカ微
粒子と同時に粒径０．０５Ｍ１以下のチタニア粒子を外
添剤として使用することが報告されているが、充分にカ
ブリを防止プることができない。On the other hand, JP-A-62-129866 reports the use of titania particles with a particle size of 0.05M1 or less as an external additive at the same time as fine silica particles, but it is not possible to sufficiently prevent fogging. Can not.
したがって、本発明の目的は、逆極性トナーによるカブ
リの発生しにくいトナーを提供することにある。Therefore, an object of the present invention is to provide a toner that is less likely to cause fogging due to toner of opposite polarity.
問題点を解決するための手段
本発明は、少なくとも着色剤と結着樹脂とよりなる電子
写真用トナーにおいて、ｉ〜ルナ−子表面に、平均粒径
０．０５／ｆｆｌ以下のシリカ微粉末と平均粒径０．１
Ｎ１以上のチタニア粒子とか付着してなることを特徴と
する。Means for Solving the Problems The present invention provides an electrophotographic toner comprising at least a colorant and a binder resin, in which fine silica powder with an average particle size of 0.05/ffl or less is added to the surface of the i~lunar particles. Average particle size 0.1
It is characterized by adhering to titania particles of N1 or higher.
本発明において用いるシリカ微粉末は、平均粒径０．１
ｍ＋以下のものであれば特に制限されるものではない。The silica fine powder used in the present invention has an average particle size of 0.1
There is no particular restriction as long as it is m+ or less.
好ましくは、ジメチルジクロロシラン等の公知の処理剤
により疎水化されたシリカ微粉末が使用される。具体的
には、例えば、日本エアロジル社製Ｒ９７２、Ｒ８１２
などが使用できる。シリカ微粒子の使用量は、０．１〜
３．０＠７１％、好ましくは０．２〜１．５重量％の範
囲で設定される。Preferably, fine silica powder hydrophobized with a known treatment agent such as dimethyldichlorosilane is used. Specifically, for example, R972 and R812 manufactured by Nippon Aerosil Co., Ltd.
etc. can be used. The amount of silica fine particles used is 0.1~
It is set in a range of 3.0@71%, preferably 0.2 to 1.5% by weight.
一方、チタニア粒子は、平均粒径が０．１μｍ以上の５
のであればよいが、０．１〜１．０μｍの範囲のものが
好ましく使用される。具体的には、例えばチタン工業社
製ＫＡ−１０、にＲ−４６０等があげられる。チタニア
粒子の使用量は、０．１−３．０重量％、好ましくは０
．２〜２．０重量の範囲′Ｃ設定ｄれる。On the other hand, titania particles have an average particle size of 0.1 μm or more.
It may be used as long as it is within the range of 0.1 to 1.0 μm. Specifically, examples include KA-10 and R-460 manufactured by Titan Kogyo Co., Ltd. The amount of titania particles used is 0.1-3.0% by weight, preferably 0.
．． 2 to 2.0 weight range 'C setting d.
これ等シリカ微粒子及びチタニア粒子を表面に存在させ
るトナー粒子として′は、特に制限されるものではなく
、公知の着色剤及び公λ日の結着樹脂よりなるものであ
れば、どのようなしのでも使用することができる。These toner particles having silica fine particles and titania particles present on their surfaces are not particularly limited, and any toner particles may be used as long as they are made of a known colorant and a known binder resin. can be used.
トナー粒子に使用される結着樹脂としては、スチレン、
クロロスチレン、ビニルスチレン等のスチレン類、エチ
レン、プロピレン、ブチレン、イソプレン等のモノオレ
フィン、酢酸ビニル、プロピオン酸ビニル、安息香酸ビ
ニル、酢酸ビニル等のビニルエステル、アリクル酸メチ
ル、アクリル酸エチル、アクリル酸ブチル、アクリル酸
ドデシル、アクリル酸オクチル、アクリル酸フェニル、
メタクリル酸メチル、メタクリル酸エチル、メタクリル
酸ブチル、メタクリル酸ドデシル等のα−メチレン脂肪
族モノカルホン酸エステル、ビニルメチルエーテル、ビ
ニルエチルエーテル、ビニルブチルエーテル等のビニル
エーテル、ビニルメチルケトン、ビニルへキシルケ１ヘ
ン、ビニルイソプロペニルケトン等のビニルケトン等の
単独重合体あるいは共重合体を例示することができ、特
に代表的な結着樹脂としては、ポリスチレン、スヂレン
ーアクリル酸アルキル共重合体、スチレン−メタクリル
酸アルキル共重合体、スチレン−アクリロニトリル共重
合体、スチレン−ブタジェン共重合体、スチレン−無水
マレイン酸共重合体、ポリエチレン、ポリプロピレンを
あげることができる。Binder resins used for toner particles include styrene,
Styrenes such as chlorostyrene and vinylstyrene, monoolefins such as ethylene, propylene, butylene, and isoprene, vinyl esters such as vinyl acetate, vinyl propionate, vinyl benzoate, and vinyl acetate, methyl acylate, ethyl acrylate, and acrylic acid. Butyl, dodecyl acrylate, octyl acrylate, phenyl acrylate,
α-methylene aliphatic monocarphonic acid esters such as methyl methacrylate, ethyl methacrylate, butyl methacrylate, and dodecyl methacrylate; vinyl ethers such as vinyl methyl ether, vinyl ethyl ether, and vinyl butyl ether; vinyl methyl ketone; vinyl hexyl ketone; Examples include homopolymers or copolymers of vinyl ketones such as vinyl isopropenyl ketone, and particularly representative binder resins include polystyrene, styrene-alkyl acrylate copolymers, and styrene-methacrylic acid. Examples include alkyl copolymers, styrene-acrylonitrile copolymers, styrene-butadiene copolymers, styrene-maleic anhydride copolymers, polyethylene, and polypropylene.
更に、ポリエステル、ポリウレタン、エポキシ樹脂、シ
リコン樹脂、ポリアミド、変性ロジン、パラフィン、ワ
ックス類をめげることができる。Furthermore, polyesters, polyurethanes, epoxy resins, silicone resins, polyamides, modified rosins, paraffins, and waxes can be avoided.
又、トナーの着色剤としては、カーボンブラック、ニグ
ロシン染料、アニリンブルー、カルコイルブルー、クロ
ムイエロー、ウルトラマリンブルーデュポンオイルレッ
ド、キノリンイエローメチレンブルークロリド、ノタロ
シアニンブルーマラカイ１〜グリーンオキＩＪ−レート
、ランプブラック、ローズベンガル、Ｃ，１，ピグメン
ト・レッド４８１、Ｃ，１，ピグメント・レッド１２２
、Ｃ，１，ピグメント・レッド５７７１、Ｃ，１，ピグ
メント・イエロー９７、Ｃ，１，ピグメント・イエロー
１２、Ｃ，１，ピグメント・ブルー１５；１、Ｃ，１，
ピグメント・ブルー１５；３、等を代表的なものとして
例示することができる。In addition, toner coloring agents include carbon black, nigrosine dye, aniline blue, calcoyl blue, chrome yellow, ultramarine blue DuPont oil red, quinoline yellow methylene blue chloride, notalocyanine blue Malachi 1 to Green Oki IJ-late, Lamp black, Rose Bengal, C,1, Pigment Red 481, C,1, Pigment Red 122
, C,1, Pigment Red 5771, C,1, Pigment Yellow 97, C,1, Pigment Yellow 12, C,1, Pigment Blue 15; 1, C,1,
Pigment Blue 15;3, etc. can be exemplified as representative examples.
これ等トナー粒子には、所望により公知の帯電制御剤、
定着助剤等の添加剤を同時に含有させてもよい。These toner particles may optionally contain a known charge control agent,
Additives such as fixing aids may also be included at the same time.
本発明において、トナー粒子は、約３０ｕＩｒｌより小
さく、好ましくは３〜２０μｍの平均粒径を有するもの
を用いることができる。In the present invention, toner particles can be used having an average particle size of less than about 30 uIrl, preferably from 3 to 20 μm.
本発明の電子写真用トナーは、キャリアを用いない−成
分ｌ−ナー現像剤であってもよく、また、キャリアを用
いる二成分現像剤でめってもよい。The electrophotographic toner of the present invention may be a one-component l-ner developer that does not use a carrier, or may be a two-component developer that uses a carrier.
しかしながら、二成分現像剤として用いられるのが好ま
しい。However, it is preferably used as a two-component developer.
キャリアを使用する場合には、公知のキャリアでめれば
特に制限されるものではなく、鉄粉系キャリア、フェラ
イト系キャリア、表面コートフェライトキャリア、磁性
粉末分散型キャリア等が使用できる。When using a carrier, there is no particular restriction as long as it is a known carrier, and iron powder carriers, ferrite carriers, surface coated ferrite carriers, magnetic powder dispersed carriers, etc. can be used.
本発明の電子写真用トナーにおいて、上記シリカ微粒子
及びチタニア粒子をトナー粒子表面に付着させるには、
公知の手段によって行うことができる。例えば、混合の
ために使用する混合機として、ヘンシェルミキサーや■
型ブレンダー等ｔ−Ｓげることかできる。In the electrophotographic toner of the present invention, in order to attach the silica fine particles and titania particles to the toner particle surface,
This can be done by known means. For example, a Henschel mixer or ■
You can use a mold blender etc.
実施例 以下、本発明を実施例により具体的に説明する。Example Hereinafter, the present invention will be specifically explained with reference to Examples.
実施例１
スチレン−「］−ブチルメタ ９０＠、＠％クリ
１ノート栗橋重合体
カーボンブラック １０重量％上記成分
を溶融混線後、微粉砕し、分級して平均粒径１１即のト
ナー粒子を作製した後、粒径０．０１６μｓのシリカ微
粉末（Ｒ９７２、日本エアロジル社製）０．８重量％、
及び平均粒径０．４／ｆｆｌのチタニア粒子（ＫＡ−１
０、チタン工業社製）１．０重量％を添加し、ヘンシェ
ルミキサーによって混合して、トナー粒子表面に付着さ
せてトナーを作製した。Example 1 Styrene-"]-butylmeth 90@, @% Kuri 1 note Kurihashi polymer carbon black 10% by weight The above components were melted and mixed, then finely pulverized and classified to produce toner particles with an average particle size of 11. After that, 0.8% by weight of silica fine powder (R972, manufactured by Nippon Aerosil Co., Ltd.) with a particle size of 0.016 μs,
and titania particles with an average particle size of 0.4/ffl (KA-1
0, manufactured by Titan Kogyo Co., Ltd.) was added thereto and mixed using a Henschel mixer to adhere to the surface of the toner particles to prepare a toner.
次に、スチレン−ｎ−ブチルメタクリレート共重合体３
０重量％及びマグネタイト（ＥＰ丁１０００ 、戸田工
業社製） ７０重量％を混練し、粉砕し、分級して、平
均粒径３５μｓのキャリアを得た。Next, styrene-n-butyl methacrylate copolymer 3
0% by weight and 70% by weight of magnetite (EP-1000, manufactured by Toda Kogyo Co., Ltd.) were kneaded, pulverized, and classified to obtain a carrier having an average particle size of 35 μs.
上記のトナー７重量％とギヤリア９３重碩％とを混合し
て、電子写真現像剤を作製し、電子写真複写機（ＦＸ−
７７９０改造機、富士ゼロックス■製）によってコピー
テストを行ったところ、５０万枚目まで、逆極性トナー
によるカブリは発生しなかった。An electrophotographic developer was prepared by mixing 7% by weight of the above toner and 93% by weight of Gearia.
When a copy test was conducted using a modified 7790 machine (manufactured by Fuji Xerox ■), no fogging due to reverse polarity toner occurred up to the 500,000th copy.
比較例１
チタニア粒子を使用しなかった以外は、実施例１とまっ
たく同様にしてトナー及びギヤリアを作製した１、同様
にしてコピーテストを行ったところ、２０万枚目より逆
極性トナーによるカブリが発生した。Comparative Example 1 Toner and gear were produced in exactly the same manner as in Example 1, except that titania particles were not used. When a copy test was conducted in the same manner, fogging due to toner of opposite polarity was observed from the 200,000th copy. Occurred.
比較例２
実施例１におけるチタニア粒子の代わりに、平均粒径０
．０２１躍のチタニア（Ｐ２５日本アエロジル社製）１
．０重量％を使用した以外は、実施例１におけると同様
にしてトナー及びキャリアを作製した。同様にしてコピ
ーテストを行ったところ、３０万枚目より逆極性トナー
によるカブリが発生した。Comparative Example 2 Instead of titania particles in Example 1, average particle size 0
．． 021 Titania (P25 Nippon Aerosil Co., Ltd.) 1
．． A toner and a carrier were prepared in the same manner as in Example 1 except that 0% by weight was used. When a copy test was conducted in the same manner, fogging due to toner of opposite polarity occurred after the 300,000th copy.
実施例３
スチレン−ｎ−ブチルメタ ９０重量％クリレー
ト架橋重合体
銅フタロシアニン ９重量％帯電制御剤
（ボントロン
Ｐ−５１、オリエント社製） １重量％上記成分
を溶１混練後、微粉砕し、分級して平均粒径１１Ｍのト
ナー粒子を作製した。次に、粒径０．００７／ｆｆｌの
シリカ微粉末（Ｒ８１２、日本エアロジル社製）０，３
重量％、及び平均粒径０．３Ｍ１のチタニア粒子（ＫＲ
−４６０、チタン工業社製）１．０重積％を添加し、ヘ
ンシェルミキサーによって混合して、トナー粒子表面に
付着させてトナーを作製した。Example 3 Styrene-n-butyl meth 90% by weight Acrylate crosslinked polymer Copper phthalocyanine 9% by weight Charge control agent (Bontron P-51, manufactured by Orient Co., Ltd.) 1% by weight The above components were melted and kneaded, then finely pulverized and classified. Toner particles having an average particle size of 11M were prepared. Next, silica fine powder (R812, manufactured by Nippon Aerosil Co., Ltd.) with a particle size of 0.007/ffl 0.3
Titania particles (KR
-460 (manufactured by Titanium Kogyo Co., Ltd.) at 1.0% by weight was added, mixed using a Henschel mixer, and adhered to the surface of toner particles to prepare a toner.
上記のトナー７重量％及び実施例１におけると同様にし
て製造したキャリア９３＠量％を混合して現像剤を作製
したａ電子写真複写機（ＦＸ−７７９０改造機、富士ゼ
ロックス■製〉によってコピーテストを行ったところ、
５０万枚目まで、逆極性トナーによるカブリは発生しな
かった。A developer was prepared by mixing 7% by weight of the above toner and 93% by weight of the carrier produced in the same manner as in Example 1. Copying was performed using an electrophotographic copying machine (modified FX-7790, manufactured by Fuji Xerox). When I did the test,
Up to the 500,000th sheet, no fogging due to reverse polarity toner occurred.
実施例３
実施例２において銅フタロシアニン９重量％の代わりに
Ｃ，１，ピグメントレッド４８：１９重ｆｆｉ％を使用
した以外は、実施例２におけると同様にしてトナーを作
製し、同様にしてコピーテストを行った。Example 3 A toner was prepared in the same manner as in Example 2, except that 48:19 wt. Tested.
その結果、５０万枚目まで、逆極性トナーににるカブリ
は発生しなかった。As a result, no fogging occurred on the reverse polarity toner until the 500,000th print.
発明の効果
本発明の電子写真用トナーは、上記の様にトナー粒子表
面に、平均粒径Ｏ８１朗以下のシリカ微粉末と平均粒径
０．１即以上のチタニア粒子とが付着しているから、長
期間繰り返し使用しても、逆極性トナーの発生が少なく
、したがってカブリのない安定した画質のコピー画像を
得ることができる。Effects of the Invention As described above, the electrophotographic toner of the present invention has fine silica powder with an average particle size of 0.81 mm or less and titania particles with an average particle size of 0.1 mm or more attached to the toner particle surface. Even when used repeatedly for a long period of time, there is little generation of toner of opposite polarity, so it is possible to obtain copy images of stable image quality without fogging.
特許出願人 冨士ビロツクス株式会社代理人
弁理士 洞部 剛Patent applicant Fuji Virotx Co., Ltd. Agent
Patent attorney Tsuyoshi Horabe
Claims (2)
用トナーにおいて、トナー粒子表面に、平均粒径０．０
５μｍ以下のシリカ微粉末と平均粒径０．１μｍ以上の
チタニア粒子とが付着してなることを特徴とする電子写
真用トナー。(1) In an electrophotographic toner comprising at least a colorant and a binder resin, an average particle size of 0.0
An electrophotographic toner comprising fine silica powder of 5 μm or less and titania particles having an average particle size of 0.1 μm or more.
とする請求項１記載の電子写真用トナー。(2) The electrophotographic toner according to claim 1, wherein the silica fine particles are made of hydrophobic silica.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63193420A JPH0797239B2 (en) | 1988-08-04 | 1988-08-04 | Electrophotographic toner |
| GB8917594A GB2222269A (en) | 1988-08-04 | 1989-08-01 | Electrophotographic toner |
| DE19893925928 DE3925928A1 (en) | 1988-08-04 | 1989-08-04 | ELECTROPHOTOGRAPHIC TONER |
| FR8910567A FR2635596A1 (en) | 1988-08-04 | 1989-08-04 | ELECTROPHOTOGRAPHIC TONER |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63193420A JPH0797239B2 (en) | 1988-08-04 | 1988-08-04 | Electrophotographic toner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0243564A true JPH0243564A (en) | 1990-02-14 |
| JPH0797239B2 JPH0797239B2 (en) | 1995-10-18 |
Family
ID=16307671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63193420A Expired - Lifetime JPH0797239B2 (en) | 1988-08-04 | 1988-08-04 | Electrophotographic toner |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH0797239B2 (en) |
| DE (1) | DE3925928A1 (en) |
| FR (1) | FR2635596A1 (en) |
| GB (1) | GB2222269A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018004803A (en) * | 2016-06-29 | 2018-01-11 | 京セラドキュメントソリューションズ株式会社 | Method for manufacturing toner for electrostatic latent image development |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4041358A1 (en) * | 1990-12-20 | 1992-07-02 | Mittelstaedt Mathis Christian | Prodn. of decoration on inorganic, non-metallic material - by applying coloured substance, transferring to surface of material and annealing |
| USH1577H (en) * | 1995-05-26 | 1996-08-06 | Hanzlik; Cheryl A. | Toner and developer compositions with high surface additive loadings |
| JP2002108002A (en) * | 2000-09-29 | 2002-04-10 | Brother Ind Ltd | Toner composition |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60136755A (en) * | 1983-12-26 | 1985-07-20 | Minolta Camera Co Ltd | Dry type developer for electrostatic latent image developing |
| JPS61250658A (en) * | 1985-04-30 | 1986-11-07 | Fuji Xerox Co Ltd | Developer |
| JPS62174772A (en) * | 1986-01-29 | 1987-07-31 | Konishiroku Photo Ind Co Ltd | Toner for developing electrostatic image |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US465209A (en) * | 1891-12-15 | sandt | ||
| US4652509A (en) * | 1984-05-11 | 1987-03-24 | Konishiroku Photo Industry Co., Ltd. | Toner for developing electrostatic latent image |
| JPS62129866A (en) * | 1985-12-02 | 1987-06-12 | Konishiroku Photo Ind Co Ltd | Positively electrifiable developer for developing electrostatic image |
| JP2684033B2 (en) * | 1986-03-11 | 1997-12-03 | コニカ株式会社 | Toner for developing electrostatic image and image forming method |
| JP2748366B2 (en) * | 1987-08-10 | 1998-05-06 | 富士ゼロックス株式会社 | Electrophotographic developer |
-
1988
- 1988-08-04 JP JP63193420A patent/JPH0797239B2/en not_active Expired - Lifetime
-
1989
- 1989-08-01 GB GB8917594A patent/GB2222269A/en not_active Withdrawn
- 1989-08-04 FR FR8910567A patent/FR2635596A1/en active Pending
- 1989-08-04 DE DE19893925928 patent/DE3925928A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60136755A (en) * | 1983-12-26 | 1985-07-20 | Minolta Camera Co Ltd | Dry type developer for electrostatic latent image developing |
| JPS61250658A (en) * | 1985-04-30 | 1986-11-07 | Fuji Xerox Co Ltd | Developer |
| JPS62174772A (en) * | 1986-01-29 | 1987-07-31 | Konishiroku Photo Ind Co Ltd | Toner for developing electrostatic image |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018004803A (en) * | 2016-06-29 | 2018-01-11 | 京セラドキュメントソリューションズ株式会社 | Method for manufacturing toner for electrostatic latent image development |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3925928A1 (en) | 1990-02-08 |
| FR2635596A1 (en) | 1990-02-23 |
| JPH0797239B2 (en) | 1995-10-18 |
| GB8917594D0 (en) | 1989-09-13 |
| GB2222269A (en) | 1990-02-28 |
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