JPH0483259A - Electrophotographic toner - Google Patents
Electrophotographic tonerInfo
- Publication number
- JPH0483259A JPH0483259A JP2196213A JP19621390A JPH0483259A JP H0483259 A JPH0483259 A JP H0483259A JP 2196213 A JP2196213 A JP 2196213A JP 19621390 A JP19621390 A JP 19621390A JP H0483259 A JPH0483259 A JP H0483259A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- magnesium oxide
- magnesium
- gaseous phase
- present
- 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
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 20
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 19
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 5
- 239000011777 magnesium Substances 0.000 claims abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 5
- 239000001301 oxygen Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 5
- 239000003086 colorant Substances 0.000 claims description 4
- 239000002245 particle Substances 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 10
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 2
- 239000007792 gaseous phase Substances 0.000 abstract 3
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 235000012245 magnesium oxide Nutrition 0.000 description 16
- 239000000049 pigment Substances 0.000 description 7
- 239000012071 phase Substances 0.000 description 6
- 239000000969 carrier Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010521 absorption reaction Methods 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
- 239000000975 dye Substances 0.000 description 3
- -1 ethylene, propylene, butylene Chemical group 0.000 description 3
- 108091008695 photoreceptors Proteins 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 235000010724 Wisteria floribunda Nutrition 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- UZKWTJUDCOPSNM-UHFFFAOYSA-N 1-ethenoxybutane Chemical compound CCCCOC=C UZKWTJUDCOPSNM-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
- 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
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-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
- 239000004793 Polystyrene Substances 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 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
- XZKRXPZXQLARHH-UHFFFAOYSA-N buta-1,3-dienylbenzene Chemical compound C=CC=CC1=CC=CC=C1 XZKRXPZXQLARHH-UHFFFAOYSA-N 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- TUZBYYLVVXPEMA-UHFFFAOYSA-N butyl prop-2-enoate;styrene Chemical compound C=CC1=CC=CC=C1.CCCCOC(=O)C=C TUZBYYLVVXPEMA-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001419 dependent effect Effects 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
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- MEGHWIAOTJPCHQ-UHFFFAOYSA-N ethenyl butanoate Chemical compound CCCC(=O)OC=C MEGHWIAOTJPCHQ-UHFFFAOYSA-N 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
- 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
- 239000004615 ingredient Substances 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
- 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
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 229940002712 malachite green oxalate Drugs 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 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
- 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
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000011049 pearl Substances 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
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 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
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 235000013799 ultramarine blue Nutrition 0.000 description 1
- 239000012808 vapor phase Substances 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
Landscapes
- 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、電子写真法、静電記録法において現像に使用
される静電荷像現像用トナーに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a toner for developing electrostatic images used for development in electrophotography and electrostatic recording.
〔従来の技術及び発明が解決しようとする課題〕電子写
真法では、感光体に形成された静電荷像を、通常、 顔
料などを含む樹脂粉体て現像し、得られた可視画像を転
写紙上に転写し、熱ローラー等で定着する。また、再び
静電荷像を形成する為に、感光体のクリーニングが行わ
れる。[Prior art and problems to be solved by the invention] In electrophotography, an electrostatic image formed on a photoreceptor is usually developed using resin powder containing pigment, and the resulting visible image is transferred onto transfer paper. and fix it with a heated roller, etc. Additionally, the photoreceptor is cleaned in order to form an electrostatic image again.
用いられるトナーは、プロセス適合性か優れたものであ
るためには、流動性、耐ケーキング性、定着性、帯電性
、クリーニング性に優れる必要かある。特に、流動性、
耐ケーキング性を高めるために、無機微粉末かトナー粒
子に添加される場合がある。In order to have excellent process compatibility, the toner used must have excellent fluidity, anti-caking properties, fixing properties, charging properties, and cleaning properties. In particular, liquidity,
Inorganic fine powders may be added to toner particles to improve caking resistance.
しかしながら、これらの微粉末は、帯電性に大きな影響
を与えてしまう。例えば、一般に用いられているシリカ
系微粉末の場合、負極性か強く、正帯電トナーの帯電性
を著しく低下してしまい、夏場環境と冬場環境とて帯電
性に大きな差を生じてしまうという問題がある。その結
果、背景かふり、濃度再現不良の原因となることがあっ
た。However, these fine powders have a large effect on charging properties. For example, commonly used silica-based fine powder has a strong negative polarity, which significantly reduces the chargeability of positively charged toner, resulting in a large difference in chargeability between summer and winter environments. There is. As a result, background blur and poor density reproduction may occur.
また、酸化マグネシウム微粉末を添加することも知られ
ているが（特開昭５４−１４７４２号公報等）、高湿時
での吸水性か高いという問題かあった。It is also known to add magnesium oxide fine powder (JP-A-54-14742, etc.), but this has the problem of high water absorption at high humidity.
また、無機微粉末の分散性もトナー特性に大きな影響を
与えてしまう。分散性が不均一な場合、流動性、耐ケー
キング性に所望の特性が得られなかったり、クリーニン
グ不十分になって、感光体上にトナー固着なとか発生し
、黒点状の画像欠陥発生の原因となることがあった。Further, the dispersibility of the inorganic fine powder also has a large effect on the toner properties. If the dispersion is uneven, the desired properties in terms of fluidity and caking resistance may not be obtained, or cleaning may be insufficient, resulting in toner sticking to the photoreceptor and causing image defects in the form of black dots. Sometimes it happened.
本発明は、従来の技術における上記のような不具合点の
改善を目的とする。The present invention aims to improve the above-mentioned drawbacks in the conventional technology.
すなわち、本発明の目的は、流動性、耐ケーキング性の
優れたトナーを提供することにある。本発明の他の目的
は、帯電性、環境安定性に優れたトナーを提供すること
にある。本発明のさらに他の目的は、黒点状の画質欠陥
が発生しにくいトナーを提供することにある。That is, an object of the present invention is to provide a toner with excellent fluidity and caking resistance. Another object of the present invention is to provide a toner with excellent charging properties and environmental stability. Still another object of the present invention is to provide a toner that is less likely to cause black dot-like image quality defects.
本発明の上記目的は、結着樹脂中に着色剤を含有してな
るトナーに対して、マグネシウム蒸気と酸素とを気相で
反応させることにより製造された酸化マグネシウム微粉
末を添加することによって達成される。The above object of the present invention is achieved by adding fine magnesium oxide powder produced by reacting magnesium vapor and oxygen in the gas phase to a toner containing a colorant in a binder resin. be done.
以下、本発明の電子写真用トナーについて、詳細に説明
する。Hereinafter, the electrophotographic toner of the present invention will be explained in detail.
本発明において、トナーに添加される酸化マグネシウム
微粉末は、マグネシウム蒸気と酸素とを気相で反応させ
る二とによって得られた、いわゆる、気相酸化法によっ
て製造されたものである。In the present invention, the fine magnesium oxide powder added to the toner is produced by a so-called gas phase oxidation method, which is obtained by reacting magnesium vapor and oxygen in the gas phase.
これら酸化マグネシウムは、必要に応して、疎水化等の
表面処理が施されてもよい。These magnesium oxides may be subjected to surface treatment such as hydrophobization, if necessary.
酸化マグネシウムは、通常、海水法によって製造される
。すなわち、海水より得られた水酸化マグネシウムを加
熱焼成して酸化マグネシウムとする。この方法で得られ
る酸化マグネシウム粉末は、小粒径で粒度分布が狭いも
のにすることか困難であり、高湿時での吸水性が高い。Magnesium oxide is usually produced by a seawater method. That is, magnesium hydroxide obtained from seawater is heated and calcined to produce magnesium oxide. It is difficult to make the magnesium oxide powder obtained by this method to have a small particle size and narrow particle size distribution, and it has high water absorption at high humidity.
これに対して、本発明における気相酸化法により製造さ
れる酸化マグネシウム微粉末は、−粒子か単結晶からな
り、小粒径でも粒度分布かシャープであって、吸水性が
低いという特徴を有している。On the other hand, the magnesium oxide fine powder produced by the gas phase oxidation method of the present invention is characterized by being composed of particles or single crystals, having a sharp particle size distribution even if the particle size is small, and having low water absorption. are doing.
本発明においては、この酸化マグネシウムの一次粒子径
は、１加以下、特に０．３−以下が好ましい。In the present invention, the primary particle size of the magnesium oxide is preferably 1 or less, particularly 0.3 or less.
本発明において、上記酸化マグネシウム微粉末が添加さ
れるトナーとしては、結着樹脂に着色剤か含有された公
知のものが使用できる。In the present invention, the toner to which the magnesium oxide fine powder is added may be a known toner containing a coloring agent in a binder resin.
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、酪酸ビニル等のビ
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ボン酸エステ
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、ビニルへキシルケトン、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
体を例示することかでき、特に代表的な結着樹脂として
は、ポリスチレン、スチレン−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。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、パラフィン類をあげ
ることができる。Binder resins include styrenes such as styrene, chlorostyrene, and vinylstyrene, monoolefins such as ethylene, propylene, butylene, and isoprene, vinyl esters such as vinyl acetate, vinyl propionate, vinyl benzoate, and vinyl butyrate, and alliclic acid. Methyl, ethyl acrylate,
α-methylene aliphatic monocarboxylic acid esters such as butyl acrylate, dodecyl acrylate, octyl acrylate, phenyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, dodecyl methacrylate, vinyl methyl ether, vinyl ethyl ether Examples include homopolymers and copolymers of vinyl ethers such as , vinyl butyl ether, vinyl ketones such as vinyl methyl ketone, vinyl hexyl ketone, and vinyl isopropenyl ketone. Particularly representative binder resins include polystyrene, Examples include styrene-alkyl acrylate copolymer, styrene-alkyl methacrylate copolymer, styrene-acrylonitrile copolymer, styrene-butadiene copolymer, styrene-maleic anhydride copolymer, polyethylene, and polypropylene. Further examples include polyester, polyurethane, epoxy resin, silicone resin, polyamide, modified rosin, and paraffin.
又、トナーの着色剤としては、カーボンブラック、磁性
粉、染料及び顔料、例えば、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、フタロシアニンブルー、
マラカイトグリーンオキサレート、ランプブラック、ロ
ーズベンガル、Ｃ４］、ピグメント・レッド４８１、Ｃ
，Ｉ ピグメント・レッド１２２、Ｃ，１，ピグメント
・レッド５７：１、Ｃ，１，ピグメント・イエロー９７
、Ｃ，Ｉ ピグメント拳イエロー１２、Ｃ，Ｉ ピグメ
ント・ブルー１５：１、Ｃ，！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, magnetic powder, dyes and pigments such as nigrosine dye, aniline blue, calcoyl blue, chrome yellow, ultramarine blue, DuPont oil red, quinoline yellow, methylene blue chloride, and phthalocyanine blue. ,
Malachite Green Oxalate, Lamp Black, Rose Bengal, C4], Pigment Red 481, C
,I Pigment Red 122, C,1, Pigment Red 57:1, C,1, Pigment Yellow 97
, C, I Pigment Fist Yellow 12, C, I Pigment Blue 15:1, C,! pigment blue 15
=3, etc. can be exemplified as a typical example.
これ等トナーには、所望により公知の荷電調整剤、ワッ
クス等の添加剤を含有させてもよい。These toners may contain known additives such as charge control agents and waxes, if desired.
本発明において、トナー粒子の平均粒径は、約３０虜よ
り小さく、特に３〜２０節の範囲にあるものが好ましい
。In the present invention, the average particle size of the toner particles is preferably less than about 30 particles, particularly in the range of 3 to 20 particles.
本発明の電子写真用トナーは、上記の酸化マグネシウム
微粉末を、上記トナー粒子に添加し、混合することによ
って得ることができる。酸化マグネシウムの添加量は、
トナーに対して０．１％ないし２０％、特に０．３％な
いし５％の範囲が好ましい。The electrophotographic toner of the present invention can be obtained by adding the above-mentioned magnesium oxide fine powder to the above-mentioned toner particles and mixing them. The amount of magnesium oxide added is
A range of 0.1% to 20%, particularly 0.3% to 5%, based on the toner, is preferred.
また、混合は、公知の手段、例えば、ヘンシェルミキサ
ーやＶ型ブレンダー等によって行うことができる。Further, the mixing can be performed by a known means such as a Henschel mixer or a V-type blender.
本発明の電子写真用トナーは、キャリアを用いない一成
分トナー現像剤であってもよく、また、キャリアを用い
る二成分現像剤であってもよい。The electrophotographic toner of the present invention may be a one-component toner 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、公知のキャリアであれば
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, and the like can be used.
以下、本発明を実施例により具体的に説明するか、本発
明は、これら実施例によって同等限定されるものではな
い。なお、「部」は、重量部を意味する。EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples, but the present invention is not limited to the same extent by these Examples. Note that "part" means part by weight.
実施例１
スチレン−ｎ−ブチルアクリレート８８部（７：３）樹
脂
カーボンブラック（ブラック ＩＯ部パールズ
Ｌ１キャボット社製）
ニグロシン染料（ボントロンＮ−０３） ２部上
記成分をバンバリーミキサ−で混練後、微粉砕し、分級
して平均粒径１１節のトナー粒子を作製した。Example 1 Styrene-n-butyl acrylate 88 parts (7:3) Resin carbon black (black IO part Pearls L1 manufactured by Cabot) 2 parts Nigrosine dye (Bontron N-03) After kneading the above ingredients in a Banbury mixer, The powder was crushed and classified to produce toner particles having an average particle size of 11 particles.
上記の様にして得られたトナー粒子１００部に対して、
気相酸化法により得られた酸化マグネシウム微粉末（マ
グネシア５００Ａ、宇部興産■製、平均−次粒子径：
０．０４５〜００６如）２部を添加し、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本
発明の電子写真用トナーを作製した。For 100 parts of toner particles obtained as above,
Magnesium oxide fine powder obtained by gas phase oxidation method (Magnesia 500A, manufactured by Ube Industries, Ltd., average particle size:
0.045-006) was added, mixed using a Henschel mixer, and adhered to the surface of the toner particles to prepare an electrophotographic toner of the present invention.
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（ＥＰＴｌｏｏＯ、戸田工業
社製）７０重量％を混線し、粉砕し、分級して、平均粒
径３５ｕＭのキャリアを得た。Next, styrene-n-butyl methacrylate copolymer 3
0% by weight and 70% by weight of magnetite (EPTlooO, manufactured by Toda Kogyo Co., Ltd.) were mixed, pulverized, and classified to obtain a carrier having an average particle size of 35 μM.
上記のトナー１０部とキャリア９０部とを混合して、電
子写真現像剤を作製し、電子写真複写機（ＦＸ−５０７
０、富士ゼロックス■製）によって、５万枚のランニン
グテスト及び環境テストを行った。それらの結果を後記
第１表に示す。An electrophotographic developer was prepared by mixing 10 parts of the above toner and 90 parts of carrier, and an electrophotographic developer was prepared using an electrophotographic copying machine (FX-507).
0, manufactured by Fuji Xerox ■), a running test of 50,000 sheets and an environmental test were conducted. The results are shown in Table 1 below.
比較例１
実施例１において、気相酸化法により得られた酸化マグ
ネシウム微粉末の代わりに、海水法により製造された酸
化マグネシウム微粉末（平均−次粒子径： ０．０５〜
０．１０虜） ２部を用いた以外は、実施例１と同様に
して電子写真用トナーを製造し、同様にしてテストを行
った。それらの結果を第１表に示す。Comparative Example 1 In Example 1, instead of the magnesium oxide fine powder obtained by the gas phase oxidation method, magnesium oxide fine powder manufactured by the seawater method (average primary particle size: 0.05 ~
An electrophotographic toner was produced in the same manner as in Example 1, except that 2 parts (0.10%) were used, and a test was conducted in the same manner. The results are shown in Table 1.
第１表
〔発明の効果〕
本発明の電子写真用トナーは、上記の様に気相酸化法に
よって得られた、粒度分布がシャープで凝集体も少ない
酸化マグネシウム微粉末を外添剤として添加してなるか
ら、トナー粒子との混合に際して、容易に分散させるこ
とが可能であり、そして、比較的少量の添加量で、トナ
ー粒子に優れた流動性、耐ケーキング性を付与すること
ができる。また、得られるトナーは、帯電性が良好で、
環境依存性か少ないという効果を生しる。Table 1 [Effects of the Invention] The toner for electrophotography of the present invention contains, as an external additive, fine magnesium oxide powder, which is obtained by the vapor phase oxidation method and has a sharp particle size distribution and few aggregates. Therefore, it can be easily dispersed when mixed with toner particles, and even with a relatively small amount added, excellent fluidity and caking resistance can be imparted to toner particles. In addition, the obtained toner has good charging properties,
It has the effect of being less dependent on the environment.
特許出願人 富士セコックス株式会社代理人
弁理士 製部 剛Patent applicant Fuji Secox Co., Ltd. Agent
Patent attorney Tsuyoshi Seibe
Claims (1)
て、マグネシウム蒸気と酸素とを気相で反応させること
により製造された酸化マグネシウム微粉末を添加したこ
とを特徴とする電子写真用トナー。(1) Electrophotography characterized in that fine magnesium oxide powder produced by reacting magnesium vapor and oxygen in the gas phase is added to a toner containing a colorant in a binder resin. toner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2196213A JPH0483259A (en) | 1990-07-26 | 1990-07-26 | Electrophotographic toner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2196213A JPH0483259A (en) | 1990-07-26 | 1990-07-26 | Electrophotographic toner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0483259A true JPH0483259A (en) | 1992-03-17 |
Family
ID=16354090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2196213A Pending JPH0483259A (en) | 1990-07-26 | 1990-07-26 | Electrophotographic toner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0483259A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5441839A (en) * | 1993-04-14 | 1995-08-15 | Konica Corporation | Negatively chargeable developer with carrier containing magnesium oxide |
| JP2007121754A (en) * | 2005-10-28 | 2007-05-17 | Canon Inc | Toner |
| US7740998B2 (en) | 2004-11-19 | 2010-06-22 | Canon Kabushiki Kaisha | Positively chargeable developer |
-
1990
- 1990-07-26 JP JP2196213A patent/JPH0483259A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5441839A (en) * | 1993-04-14 | 1995-08-15 | Konica Corporation | Negatively chargeable developer with carrier containing magnesium oxide |
| US7740998B2 (en) | 2004-11-19 | 2010-06-22 | Canon Kabushiki Kaisha | Positively chargeable developer |
| JP2007121754A (en) * | 2005-10-28 | 2007-05-17 | Canon Inc | Toner |
| JP4569900B2 (en) * | 2005-10-28 | 2010-10-27 | キヤノン株式会社 | toner |
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