JPS636570A - Heat fixable toner - Google Patents
Heat fixable tonerInfo
- Publication number
- JPS636570A JPS636570A JP61150000A JP15000086A JPS636570A JP S636570 A JPS636570 A JP S636570A JP 61150000 A JP61150000 A JP 61150000A JP 15000086 A JP15000086 A JP 15000086A JP S636570 A JPS636570 A JP S636570A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- styrene
- binder resin
- colorant
- dye
- 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 33
- 229920005989 resin Polymers 0.000 claims abstract description 33
- QPQKUYVSJWQSDY-UHFFFAOYSA-N 4-phenyldiazenylaniline Chemical compound C1=CC(N)=CC=C1N=NC1=CC=CC=C1 QPQKUYVSJWQSDY-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003086 colorant Substances 0.000 claims abstract description 9
- 229920001577 copolymer Polymers 0.000 claims description 19
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 18
- KAKZBPTYRLMSJV-UHFFFAOYSA-N vinyl-ethylene Natural products C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 7
- 229920003048 styrene butadiene rubber Polymers 0.000 abstract description 13
- 239000011230 binding agent Substances 0.000 abstract description 10
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000003860 storage Methods 0.000 abstract description 3
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 abstract 2
- 230000007774 longterm Effects 0.000 abstract 1
- 239000000975 dye Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 230000007613 environmental effect Effects 0.000 description 7
- -1 polyethylene Polymers 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 4
- 239000000049 pigment Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 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 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 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 2
- 239000006229 carbon black Substances 0.000 description 2
- 235000019241 carbon black Nutrition 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 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 2
- OSNILPMOSNGHLC-UHFFFAOYSA-N 1-[4-methoxy-3-(piperidin-1-ylmethyl)phenyl]ethanone Chemical compound COC1=CC=C(C(C)=O)C=C1CN1CCCCC1 OSNILPMOSNGHLC-UHFFFAOYSA-N 0.000 description 1
- KTZVZZJJVJQZHV-UHFFFAOYSA-N 1-chloro-4-ethenylbenzene Chemical compound ClC1=CC=C(C=C)C=C1 KTZVZZJJVJQZHV-UHFFFAOYSA-N 0.000 description 1
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000013032 Hydrocarbon resin Substances 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical compound N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920007962 Styrene Methyl Methacrylate Polymers 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- RWZYAGGXGHYGMB-UHFFFAOYSA-N anthranilic acid Chemical compound NC1=CC=CC=C1C(O)=O RWZYAGGXGHYGMB-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 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
- 239000008119 colloidal silica Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 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 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 229920006270 hydrocarbon resin Polymers 0.000 description 1
- 230000002209 hydrophobic effect 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
- 230000010365 information processing Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- ADFPJHOAARPYLP-UHFFFAOYSA-N methyl 2-methylprop-2-enoate;styrene Chemical compound COC(=O)C(C)=C.C=CC1=CC=CC=C1 ADFPJHOAARPYLP-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 235000019809 paraffin wax Nutrition 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001490 poly(butyl methacrylate) polymer Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002285 poly(styrene-co-acrylonitrile) Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 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
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin 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
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920002102 polyvinyl toluene Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229920005792 styrene-acrylic resin Polymers 0.000 description 1
- 229920006249 styrenic copolymer Polymers 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 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
- G03G9/087—Binders for toner particles
- G03G9/08702—Binders for toner particles comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08737—Polymers derived from conjugated dienes
-
- 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
- G03G9/087—Binders for toner particles
- G03G9/08702—Binders for toner particles comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/08706—Polymers of alkenyl-aromatic compounds
- G03G9/08708—Copolymers of styrene
Abstract
Description
【発明の詳細な説明】
本発明は画像担体表面に形成した静電荷像の現像に使用
する静電荷像現像用トナーに関するものであり、熱ロー
ラー定着時にオフセットを生じないと共に耐環境安定性
を改良した加熱定着用トナーに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrostatic image developing toner used to develop an electrostatic image formed on the surface of an image carrier, which does not cause offset during fixation with a hot roller and has improved environmental stability. This invention relates to a heat-fixing toner.
［従来の技術］
情報処理装置の出力形態として使用される電子写真方法
においては、画像担体表面に形成した静電荷像を例えば
トナーを含有する現像剤からなる磁気ブラシによって現
像後、普通紙等の記録媒体へ転写し、熱若しくは圧力手
段を介して定着するのが一般的である。熱によりトナー
を定着する方法としては、オープンやフラッシュランプ
によりトナーを加熱溶融する方法があるが、これらの方
法は高速、大型の装置に用いられており、小型の装置は
熱ローラーを用いて熱及び圧力により定着させる方法が
多い。[Prior Art] In an electrophotographic method used as an output form of an information processing device, an electrostatic image formed on the surface of an image carrier is developed with a magnetic brush made of a developer containing toner, and then developed on a sheet of plain paper or the like. Generally, the image is transferred to a recording medium and fixed using heat or pressure means. Methods of fixing toner using heat include heating and melting the toner using an open or flash lamp, but these methods are used for high-speed, large-scale equipment, while small equipment uses heat rollers to heat and melt the toner. There are also many methods of fixing using pressure.
この熱ローラーによる定着法はトナー像が直接熱部に接
触するために、効率が良く、電力の省力化、火災の防止
などの多くの利点を有しているが、反面、トナー像の一
部が熱ローラー側へ融着するいわゆるオフセットと呼ば
れる現象が起こり、画質の低下や熱ローラー定着機の寿
命を縮減するなどの不合理を生ずる。しかして、上記電
子写真方式において使用する熱ローラー定着用加熱定着
トナーとしては、このオフセット現象の起こりにくいと
いう特性が要求される。更に、トナーとして最も重要で
ある画質が良好であり、特に温度や湿度の外部環境の如
何によらず安定な画像が１１られることが要求される。This fixing method using a heat roller is highly efficient because the toner image comes into direct contact with the heated area, and has many advantages such as saving power and preventing fires. A phenomenon called offset occurs in which the heat roller fuses to the heat roller side, resulting in unreasonable problems such as deterioration of image quality and shortening the life of the heat roller fixing device. Therefore, the heat-fixing toner for heat roller fixing used in the electrophotographic method is required to have a property that this offset phenomenon does not easily occur. Furthermore, the toner is required to have good image quality, which is the most important aspect, and in particular, to produce stable images regardless of the external environment such as temperature and humidity.
［発明が解決しようとする問題点１
上記乾式現像剤として使用される、オフセット現象を生
じにくいトナーとしては、例えば低分子量ポリオレフィ
ンを加える方法があるが、この方法によりトナーは、流
動性、耐フィルミング性の点で必ずしも満足できる特性
とはならないという欠点があった。また、日本特許第１
，００５，０３１号に知られているごとくスチレン−ブ
タジエン共重合体に塩素化パラフィンを加える方法や、
特開昭５７−１７２３．１８号公報に記載のある特定の
スチレンブタジェン共不合体を用いる方法があるがこれ
らの方法によりオフセット現象の起こりにくにトナーは
得られるものの、トナーに要求される総合的な特性、す
なわち画質、帯電性が外部１１ｊｆ境によらず安定であ
るという特性を同時に満足させることは困難であった。[Problem to be Solved by the Invention 1] There is a method of adding, for example, a low molecular weight polyolefin to the toner that is used as the above-mentioned dry developer and is less likely to cause the offset phenomenon. It has the disadvantage that it does not necessarily have satisfactory properties in terms of ease of processing. Also, the first Japanese patent
, a method of adding chlorinated paraffin to a styrene-butadiene copolymer as known in No. 005,031;
There is a method using a specific styrene-butadiene copolymer described in JP-A-57-1723.18, but although these methods produce toners that are less likely to cause the offset phenomenon, they do not meet the overall requirements of toners. It has been difficult to simultaneously satisfy the following characteristics, that is, the image quality and chargeability are stable regardless of the external 11jf boundary.
またトナーに供けられる着色剤、荷電制御剤としての染
料、含量は、例えば特開昭５９−７８３６１号公報に知
られているごとく、ある種のアゾ系２：１型含金属染料
等がある。この様な染料を用いることにより帯電性が安
定なトナーが得られることは公知であるが、必ずしも耐
環境性が十分ではなかった。また、どの様な樹脂と組み
合わせても、特性の優れたトナーが１ｑられるわけでは
なく、この場合、樹脂と染料との特定の組み合わせが要
求される。In addition, the colorant and the content of the dye as a charge control agent used in the toner include certain azo type 2:1 type metal-containing dyes, as known from, for example, Japanese Patent Application Laid-Open No. 78361/1983. . Although it is known that toners with stable chargeability can be obtained by using such dyes, environmental resistance has not always been sufficient. Furthermore, no matter what kind of resin is used in combination, a toner with excellent characteristics cannot be obtained; in this case, a specific combination of resin and dye is required.
［問題点を解決するための手段］
上記問題点を解決するために、本発明においては、少く
とも結着用樹脂および着色剤を含み熱ローラーにより定
着可能な静電潜像現像用トナーであって、結着用樹脂が
スチレン成分を７０〜９５モル％含むスチレン−ブタジ
エン共重合体であり、該着色剤としてＣ．Ｉ．Ｎｏ．ソ
ルベントイエロー２１に分類される染料を含むという技
術的手段を採用したのである。[Means for Solving the Problems] In order to solve the above problems, the present invention provides a toner for developing electrostatic latent images, which contains at least a binding resin and a colorant and can be fixed with a heated roller. , the binding resin is a styrene-butadiene copolymer containing 70 to 95 mol % of a styrene component, and the colorant is C.I. I. No. They adopted the technical means of containing a dye classified as Solvent Yellow 21.
［作 用］
トナーの定着性、耐オフセット性および耐熱ブロッキン
グ性は、トナー中に含まれる結着用樹脂の性質に大きく
依存し、これらのトナーの特性は互いに相反する性質を
結着用樹脂に要求している。[Function] The fixing properties, anti-offset properties, and heat blocking properties of a toner largely depend on the properties of the binder resin contained in the toner, and these toner properties require the binder resin to have contradictory properties. ing.
すなわち、トナーの特性としては、より低い温度で良好
な定着性を持つことが、高速化、消費電力の省力化の点
で望ましく、従って結着用樹脂は分子量が比較的小さく
、低軟化温度を有することが要求される。これに対し、
トナーの耐オフセット性は十分高い温度まで保証される
ことが望ましく、結着用樹脂の性質としては、分子量が
ある程度大きくトナーの凝集力が大きいことが必要であ
る。In other words, it is desirable for the toner to have good fixing properties at lower temperatures in terms of speeding up and saving on power consumption. Therefore, the binder resin has a relatively small molecular weight and a low softening temperature. This is required. In contrast,
It is desirable that the offset resistance of the toner is guaranteed up to a sufficiently high temperature, and the properties of the binder resin are such that the molecular weight is relatively large and the cohesive force of the toner is large.
また、トナーの耐熱ブロッキング性は、トナーの表面形
状にもある程度左右されるが、結着用樹脂の性質として
は樹脂の第２次転移温度（ガラス転移温度：Ｔｇ）に大
きく依存している。スチレン−ブタジエン共重合体はト
ナーの結着用樹脂の中でこれらの要求特性をほぼ満足す
る特性を有しているが、本発明で示した範囲の樹脂を用
いることにより、トナーとしての基本的な要求特性を満
たすことが可能である。すなわち、スチレン成分の含有
率が７０〜９５モル％であること、さらに好ましくは、
８０〜９２モル％であるスチレン−ブタジエン共重合体
を用いることが望ましい。ここで、スチレン含量が、７
０モル％未満であると、樹脂のガラス転移温度が低下し
、十分な耐熱ブロッキング性を保てなくなる。逆にスチ
レン含量が９５モル％を越えるとオフセットを起こしや
すくなるという問題が生じる。また、該樹脂の分子量と
しては、重量平均分子ｍ ｓｏ、ｏｏｏ〜２００，００
０の範囲にあることが望ましく、重ω平均分子ｆｆｉ
（Ｍｗ ）と数平均分子ｆｆｉ（Ｍｎ）の比は３．５以
上であるのが良い。Further, the heat blocking property of the toner depends to some extent on the surface shape of the toner, but the properties of the binding resin largely depend on the second-order transition temperature (glass transition temperature: Tg) of the resin. Styrene-butadiene copolymer has properties that almost satisfy these required properties among toner binding resins, but by using a resin within the range shown in the present invention, the basic properties as a toner It is possible to satisfy the required characteristics. That is, the content of the styrene component is 70 to 95 mol%, more preferably,
It is desirable to use a styrene-butadiene copolymer having a content of 80 to 92 mole percent. Here, the styrene content is 7
If it is less than 0 mol %, the glass transition temperature of the resin decreases, making it impossible to maintain sufficient heat blocking properties. On the other hand, if the styrene content exceeds 95 mol %, a problem arises in that offset tends to occur. In addition, the molecular weight of the resin is weight average molecular m so, ooo ~ 200,00
It is desirable that it is in the range of 0, and the heavy ω average molecule ffi
(Mw) and the number average molecule ffi (Mn) is preferably 3.5 or more.
−方、トナーに要求される帯電性としては、帯電が摩擦
によってすみやかに起こることと、生じた帯電が、温度
、湿反等の影響を受けにくく、安定であることが要求さ
れる。物質が帯電する殿構については金属の接触帯電等
については、研究され有用な知見が得られているが、ト
ナーの様な粉体の摩擦帯電については、系が複雑であり
、不明な点が多い。しかしながら、このトナーの帯電に
ついて研究を重ねた結果、樹脂としてスチレン−ブタジ
エン共重合体を用い、着色剤として公知であるＣ、１．
Ｎｏ、ソルベントイエロー２１に分類される染料を同時
に含むトナーにより、帯電性が長期に亘って安定であり
、温度湿度の変化に対しても、帯電量の変化が極めて少
ないことを見出した。On the other hand, the charging properties required of the toner include that charging occurs quickly due to friction, and that the generated charging is stable and not easily affected by temperature, humidity, etc. Regarding the structure in which substances are charged, research has been conducted and useful knowledge has been obtained regarding contact charging of metals, etc. However, regarding frictional charging of powders such as toner, the system is complex and there are many unknown points. many. However, as a result of repeated research on the charging of this toner, it was found that a styrene-butadiene copolymer was used as the resin, and a well-known C, 1.
It has been found that a toner containing dyes classified as No. 2 and Solvent Yellow 21 has stable charging properties over a long period of time, and that the amount of charging does not change significantly even with changes in temperature and humidity.
スチレンーブクジエン共重合体の帯電が、安定である理
由としては、酸素、窒素等の極性を有する元素を含まな
いことが１つはその理由として考えられる。また、Ｃ，
１，ＮＯ，ソルベントイエロー２１に分類される染料は
、スチレン−ブタジエン共重合体との分散性が良好であ
り、このことにより帯電性が安定になると考えられる。One possible reason why the styrene-buccadiene copolymer is stable is that it does not contain polar elements such as oxygen and nitrogen. Also, C,
Dyes classified as No. 1, NO, and Solvent Yellow 21 have good dispersibility with the styrene-butadiene copolymer, and this is thought to result in stable charging properties.
なお、本発明によればＣ．Ｉ．Ｎｏ．ソルベントイエロ
ー２１に分散される染料がスチレン−ブタジエン共重合
体を結着用樹脂とするトナーに含まれる割合としては、
樹脂１００重量部に対して。０．１重量部から１０重優
品の範囲であることが望ましい。なぜなら、０．１重合
部より少ない割合では、帯電を十分に制御することがで
きず、帯電量変化の増大をもたらす。In addition, according to the present invention, C. I. No. The proportion of the dye dispersed in Solvent Yellow 21 in the toner using styrene-butadiene copolymer as the binding resin is as follows:
Based on 100 parts by weight of resin. It is desirable that the amount ranges from 0.1 parts by weight to 10 parts by weight. This is because, if the ratio is less than 0.1 polymerization part, charging cannot be sufficiently controlled, resulting in an increase in changes in the amount of charging.
逆に１０重量部を越えると、トナーの帯電凝集を生ずる
など、不都合である。On the other hand, if the amount exceeds 10 parts by weight, there are disadvantages such as charging and agglomeration of the toner.
本発明によるトナーには、上記のスチレンーブダジエン
共重合体の他に結着用樹脂として、本発明の目的である
耐オフセット性、Ｉｖ４１Ｍｍ性を損わない範囲で画質
、粉砕性等の向上のために公知の樹脂を添加することは
可能である。すなわち、ポリスチレン、ポリｐ−クロル
スチレン、ポリビニルトルエンなどのスチレン及びその
置換体の単重合体；スチレン−ｐ−クロルスチレン共重
合体。In addition to the above-mentioned styrene-butadiene copolymer, the toner according to the present invention may contain a binder resin for improving image quality, crushability, etc. within a range that does not impair offset resistance and Iv41Mm properties, which are the objectives of the present invention. It is possible to add known resins. That is, homopolymers of styrene and substituted products thereof such as polystyrene, poly p-chlorostyrene, and polyvinyltoluene; styrene-p-chlorostyrene copolymers.
スチレン−ビニルトルエン共重合体、スチレン−ビニル
ナフタリン共重合体、スチレン−アクリル酸メチル共重
合体、スヂレンーアクリル酸エチル共重合体、スチレン
−アクリル酸オクチル共重合体、スチレン−メタクリル
酸メチル共重合体、スチレン−メタクリル酸エチル共重
合体、スチレン−メタクリル酸ブチル共重合体、スヂレ
ンーアクリルーアミノアクリル系共重合体、スチレン−
アミノアクリル系共重合体、スチレン−アクリロニトリ
ル共重合体、スチレン−ビニルメチルエーテル共重合体
、スチレン−ビニルエチルエーテル共重合体、スチレン
−ごニルメチルケトン共重合体。Styrene-vinyltoluene copolymer, styrene-vinylnaphthalene copolymer, styrene-methyl acrylate copolymer, styrene-ethyl acrylate copolymer, styrene-octyl acrylate copolymer, styrene-methyl methacrylate copolymer, styrene-ethyl methacrylate copolymer, styrene-butyl methacrylate copolymer, styrene-acrylic-aminoacrylic copolymer, styrene-
Aminoacrylic copolymer, styrene-acrylonitrile copolymer, styrene-vinyl methyl ether copolymer, styrene-vinyl ethyl ether copolymer, styrene-vinyl methyl ketone copolymer.
スチレン−イソプレン共重合体、スヂレンーアクリロニ
トリルーインデン共重合体、スチレン−マレイン酸共重
合体、スチレン−マイレン酸エステル共重合体などのス
チレン系共重合体；ポリメチルメタクリレート、ポリブ
チルメタクリレート。Styrenic copolymers such as styrene-isoprene copolymer, styrene-acrylonitrile-indene copolymer, styrene-maleic acid copolymer, and styrene-maleic acid ester copolymer; polymethyl methacrylate, polybutyl methacrylate.
ポリ塩化ビニル、ポリ酢酸ビニル、ポリエチレン。Polyvinyl chloride, polyvinyl acetate, polyethylene.
ポリプロピレン、ポリエステル、ポリウレタン。Polypropylene, polyester, polyurethane.
ポリアミド、エポキシ樹脂、ポリビニルブチラール、ポ
リアクリル酸樹脂、ロジン、変性ロジン。Polyamide, epoxy resin, polyvinyl butyral, polyacrylic acid resin, rosin, modified rosin.
テルペン樹脂、フェノール樹脂、脂肪族又は脂環族炭化
水素樹脂、芳香族系石油樹脂、塩素化パラフィン、パラ
フィンワックスなどが単独或いは混合して使用できる。Terpene resins, phenolic resins, aliphatic or alicyclic hydrocarbon resins, aromatic petroleum resins, chlorinated paraffins, paraffin waxes, etc. can be used alone or in combination.
また、トナーにおいては任意の適当な顔料や染料が、本
発明の目的である耐オフセット性、耐環境性を損わない
範囲で、着色剤として使用可能である。例えば、カーボ
ン−ブラック、鉄黒、フタロシアニンブルー、ｌ！￥青
、キナクリドン、ベンジジンイエローなどの公知の染顔
料がある。Further, in the toner, any suitable pigment or dye can be used as a coloring agent as long as it does not impair the offset resistance and environmental resistance, which are the objects of the present invention. For example, carbon-black, iron black, phthalocyanine blue, l! There are known dyes and pigments such as ￥ blue, quinacridone, and benzidine yellow.
さらに本発明のトナーは、磁性粉を添加することにより
、−成分現像用、磁性トナーとして用いても良い。Furthermore, the toner of the present invention may be used as a magnetic toner for -component development by adding magnetic powder.
一方、本発明によるトナーと組み合わせて使用されるキ
ャリアとしては、例えば、表面酸化または未酸化の鉄、
ニッケル、コバルト、マンガン。On the other hand, carriers used in combination with the toner according to the present invention include, for example, surface oxidized or unoxidized iron,
Nickel, cobalt, manganese.
クロム、銅、バリウム、希土類等の金属およびそれらに
合金または酸化物であるフェライトなどが使用できる。Metals such as chromium, copper, barium, and rare earths, as well as alloys or oxides of these metals, such as ferrite, can be used.
また、これらキャリアの表面に樹脂。There is also resin on the surface of these carriers.
染顔料、荷電制御剤、フィラー等を単独或いは複数で固
定させた、いわゆるコーティングキャリアとして使用し
ても良い。It may also be used as a so-called coating carrier in which dyes and pigments, charge control agents, fillers, etc. are fixed singly or in combination.
［実施例１
以下実施例により本発明をさらに詳しく説明するが、本
発明はこれらの例によって限定されるものではない。[Example 1] The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited to these Examples.
実施例１
エマルション重合により合成されたスヂレンーブタジエ
ン共重合体（スチレン：ブタジェン＝８５：１５、重合
平均分子Ｂ ｉｓｏ、ｏｏｏ、数平均分子ｄ１２．５０
０） ８４重量部Ｃ，１
，ＮＯ，ソルベントイエロー２１に分類されるアントラ
ニル酸−３メチル−１フェニル−５ビラゾロンのクロム
錯塩 ２重量部ポリエチレンワックス
４重Ｒ部（三井石油化学工業製Ｈｉｗ
ａｘ ２００ｐ ）カーボンブラック
１０重置部（三菱化成製 ＃４４）
上記のものを乾式混合し、ニーダ−で１５０℃の温度で
溶融混練した。生成した混合物を冷却固化後、ジェット
ミルにより２０μｍ以下の粒子に粉砕した。次にこの粉
砕粉を風力分級機を介して分級し５〜２０μｍの粒度分
布を有するトナーとした。Example 1 Styrene-butadiene copolymer synthesized by emulsion polymerization (styrene:butadiene = 85:15, polymerization average molecule B iso, ooo, number average molecule d12.50
0) 84 parts by weight C,1
, NO, chromium complex salt of 3-methyl-1-phenyl-5-vilazolone anthranilate classified as Solvent Yellow 21 2 parts by weight Polyethylene wax 4 parts R (Hiw manufactured by Mitsui Petrochemical Industries, Ltd.)
ax 200p) carbon black
10 stacked parts (Mitsubishi Kasei #44) The above materials were dry mixed and melt-kneaded at a temperature of 150°C in a kneader. The resulting mixture was cooled and solidified, and then ground into particles of 20 μm or less using a jet mill. Next, this pulverized powder was classified using an air classifier to obtain a toner having a particle size distribution of 5 to 20 μm.
さらに上記トナーに疎水性コロイダルシリカ（日本アエ
ロジル（株）製Ｒ９７２） ０．５１ｆｉ部を外添し
、ヘンシェルミキサーで混合しトナー表面に付着させト
ナー１を作成した。Furthermore, 0.51 fi part of hydrophobic colloidal silica (R972, manufactured by Nippon Aerosil Co., Ltd.) was externally added to the above toner, mixed with a Henschel mixer, and adhered to the toner surface to prepare Toner 1.
実施例２
前記トナー１における染料に代えて、同じくＣ．Ｉ．Ｎ
ｏ．ソルベントイエロー２１に分類されるオリエント化
学（株）製バリファストイエロー＃３１２０を４１部加
えた以外は前記トナー１と同一条件でトナー２を作成し
た。また、同じくバリファストイエロ＃ ３１２０をそ
れぞれ、０，１重ｆｆｉ部、 ５重量部、８重量部加え
たトナーをそれぞれトナー３、 ４． Ｓとした。Example 2 In place of the dye in Toner 1, C.I. I. N
o. Toner 2 was prepared under the same conditions as Toner 1 except that 41 parts of Varifast Yellow #3120 manufactured by Orient Kagaku Co., Ltd., which is classified as Solvent Yellow 21, was added. Toners 3 and 4 were prepared by adding 0, 1 parts by weight, 5 parts by weight, and 8 parts by weight of Varifast Yellow #3120, respectively. It was set as S.
［比較例］
下記以外は前記トナー１および２と同一条件で作成した
トナーをトナー６〜８とした。[Comparative Example] Toners 6 to 8 were prepared under the same conditions as Toners 1 and 2 except for the following.
（トナー６）
結着用樹脂としてスチレン含有比が、スチレン：ブタジ
ェン＝ ６５ ： ３５であるスチレン−ブタジエン共
重合体を用いたもの。(Toner 6) A styrene-butadiene copolymer with a styrene content ratio of styrene:butadiene=65:35 is used as the binding resin.
（トナー７）
結着用樹脂として、ポリ（スチレン−ｎブチルアクリレ
ート）（原素化成（株）製ＨＴＲ−０３）を用いたもの
。(Toner 7) Poly(styrene-n-butyl acrylate) (HTR-03 manufactured by Genkasei Co., Ltd.) was used as the binding resin.
（トナー８）
染料として、含金ｆｆｌ染料（オリエント化学工業（株
）製Ｅ−８１）を用いたもの。(Toner 8) A metal-containing FFL dye (E-81 manufactured by Orient Chemical Industry Co., Ltd.) was used as the dye.
上記トナー１〜５とキャリア（日立金属製ＫＢＮ−１０
０＞とを混合してトナー濃度５％の現像剤とし、市販の
複写礪（小西六写真工業製ＩＪｂｉｘ −３０００）を
使用して画像評価を行った結果を第１表に示す。The above toners 1 to 5 and carrier (KBN-10 manufactured by Hitachi Metals)
Table 1 shows the results of image evaluation using a commercially available copying machine (IJbix-3000 manufactured by Konishiroku Photo Industries) using a developer having a toner concentration of 5%.
なお、表中における帯電ｍ変化は、初期と２万枚コピー
時のブローオフ帯電量を粉体帯電量測定装置（（株）東
芝ケミカル製ＴＢ−２００）により測定した値の差を示
したものである。この差は、トナーの寿命の点からでき
るだけ小さいことが望ましい。The change in charge m in the table indicates the difference between the blow-off charge amount measured at the initial stage and at the time of copying 20,000 sheets using a powder charge amount measuring device (TB-200 manufactured by Toshiba Chemical Corporation). be. It is desirable that this difference be as small as possible from the viewpoint of toner life.
表から明らかなように、比較例におけるトナー６は、耐
環境性は良いが、ブタジェン成分の割合が多いために、
保存性が劣る結果となっている。As is clear from the table, Toner 6 in Comparative Example has good environmental resistance, but due to the high proportion of butadiene components,
This results in poor storage stability.
トナー７は、スチレン−アクリル系樹脂を用いているが
、この場合やや耐環境性に劣る結果となっている。トナ
ー８は、他の種類の染料を用いているが、やはり、耐環
境性にやや問題があり、帯電量の変化も大きくなってい
る。これに対し、実施例におけるトナー１．２．および
３〜５は何れの特性も良好であり、多数枚のコピーに亘
って帯電性も安定なトナーであることがわかる。Toner 7 uses styrene-acrylic resin, but in this case, the environmental resistance is slightly inferior. Toner 8 uses a different type of dye, but it still has some problems in environmental resistance and has a large change in the amount of charge. On the other hand, toner 1.2 in Example. It can be seen that toners No. 3 to No. 5 have good characteristics and are stable in chargeability over a large number of copies.
第 １ 表
［発明の効果］
本発明の加熱定着用トナーは、以上記述のような構成お
よび作用であり、耐オフセット性、保存性、定着性が同
時に良好であり、さらに耐環境性が良好な長寿命の現像
剤を提供できるという効果がある。Table 1 [Effects of the Invention] The heat fixing toner of the present invention has the structure and function as described above, and has good offset resistance, storage stability, and fixing properties, and also has good environmental resistance. This has the effect of providing a long-life developer.
Claims (1)
より定着可能な静電潜像現像用トナーであって、結着用
樹脂がスチレン成分を７０〜９５モル％含むスチレン−
ブタジエン共重合体であり、該着色剤としてＣ．Ｉ．Ｎ
ｏ．ソルベントイエロー２１に分類される染料を含むこ
とを特徴とする負帯電型の加熱定着トナー。A toner for developing an electrostatic latent image that contains at least a binding resin and a colorant and can be fixed with a hot roller, the binding resin containing 70 to 95 mol% of a styrene component.
butadiene copolymer, and the colorant is C.I. I. N
o. A negatively charged heat fixing toner characterized by containing a dye classified as Solvent Yellow 21.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61150000A JPS636570A (en) | 1986-06-26 | 1986-06-26 | Heat fixable toner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61150000A JPS636570A (en) | 1986-06-26 | 1986-06-26 | Heat fixable toner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS636570A true JPS636570A (en) | 1988-01-12 |
Family
ID=15487276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61150000A Pending JPS636570A (en) | 1986-06-26 | 1986-06-26 | Heat fixable toner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS636570A (en) |
-
1986
- 1986-06-26 JP JP61150000A patent/JPS636570A/en active Pending
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