JPH0210375A - Positively chargeable yellow developing agent - Google Patents
Positively chargeable yellow developing agentInfo
- Publication number
- JPH0210375A JPH0210375A JP63159325A JP15932588A JPH0210375A JP H0210375 A JPH0210375 A JP H0210375A JP 63159325 A JP63159325 A JP 63159325A JP 15932588 A JP15932588 A JP 15932588A JP H0210375 A JPH0210375 A JP H0210375A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- developing agent
- positively chargeable
- yellow
- yellow developing
- 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
- 239000011347 resin Substances 0.000 claims abstract description 22
- 229920005989 resin Polymers 0.000 claims abstract description 22
- 239000002245 particle Substances 0.000 claims abstract description 15
- 239000000049 pigment Substances 0.000 claims abstract description 11
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 claims abstract description 10
- 239000011230 binding agent Substances 0.000 claims abstract description 6
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 abstract description 11
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003822 epoxy resin Substances 0.000 abstract description 2
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 229920001225 polyester resin Polymers 0.000 abstract description 2
- 239000004645 polyester resin Substances 0.000 abstract description 2
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 abstract 2
- 229920006243 acrylic copolymer Polymers 0.000 abstract 1
- 239000012943 hotmelt Substances 0.000 abstract 1
- 230000003252 repetitive effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- -1 silver halide Chemical class 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 108091008695 photoreceptors Proteins 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 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
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical group 0.000 description 1
- CJPQIRJHIZUAQP-MRXNPFEDSA-N benalaxyl-M Chemical compound CC=1C=CC=C(C)C=1N([C@H](C)C(=O)OC)C(=O)CC1=CC=CC=C1 CJPQIRJHIZUAQP-MRXNPFEDSA-N 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 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
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000011817 metal compound particle Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 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
- G03G9/09—Colouring agents for toner particles
- G03G9/0906—Organic dyes
- G03G9/091—Azo dyes
-
- 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
- G03G9/10—Developers with toner particles characterised by carrier particles
- G03G9/113—Developers with toner particles characterised by carrier particles having coatings applied thereto
- G03G9/1132—Macromolecular components of coatings
- G03G9/1133—Macromolecular components of coatings obtained by reactions only involving carbon-to-carbon unsaturated bonds
- G03G9/1134—Macromolecular components of coatings obtained by reactions only involving carbon-to-carbon unsaturated bonds containing fluorine atoms
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、電子写真法又は静電記録法において使用され
る乾式二成分系正帯電性イエロー現像剤に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a dry two-component positive charging yellow developer used in electrophotography or electrostatic recording.
〈従来の技術〉
最近、フルカラー複写が注目され既に乾式フルカラー複
写機が数機種市販されている。これらの複写機ではプラ
ス極性の静電荷像を形成する感光体が使用されており、
従って現像剤はマイナス極性のものが使用されている。<Prior Art> Recently, full-color copying has attracted attention, and several types of dry-type full-color copying machines are already on the market. These copying machines use photoreceptors that form electrostatically charged images with positive polarity.
Therefore, a negative polarity developer is used.
しかし、近年ＯＰＣ（有機半導体）が、その変性の容易
さ、無公害性、実用上十分な耐刷特性等の点から注目を
あび、−１ｃの黒色画像用複写機への搭載が進んでおり
、乾式フルカラー複写機への応用も検討が進められてい
る。現状のＯＰＣ感光体はプラス帯電のものは技術的に
困難で通常負帯電性のものが使用されており、従って正
帯電性のフルカラー用トナーが要望されている。However, in recent years, OPC (organic semiconductor) has attracted attention due to its ease of modification, non-polluting properties, and sufficient printing durability for practical use, and its use in -1c black image copying machines is progressing. , and application to dry-type full-color copying machines is also being considered. Currently, positively charged OPC photoreceptors are technically difficult to use, and negatively charged ones are usually used.Therefore, there is a demand for positively charged full-color toners.
ところで、フルカラー複写は通常のモノカラー複写と異
なり、ビクトリアルなカラー原稿を鮮明、かつ忠実に再
現できることが重要である。フルカラー複写の原稿は、
色文字、黒文字などの文字原稿、印刷等の網点原稿、銀
塩写真の原稿など、並びにこれらが混在して１枚の原稿
になることもあり、原稿と複写画像が並置されるため、
特に色彩を忠実に再現することが要望される。色再現性
は、フルカラー画像のなかでも特に重要であり、定着画
像の色調、透明性、光沢度、階調性などが影響する。色
再現はイエロー、マゼンタ及びシアンの三原色トナーに
よる減法混色あるいは並置加法混色より成り立っている
。減法混色においては光を透過する透明性トナーを用い
ることが必要である。Incidentally, unlike ordinary monochrome copying, full-color copying is important in being able to clearly and faithfully reproduce Victorian color originals. For full-color copies of manuscripts,
Text manuscripts such as color text and black text, halftone manuscripts such as printing, manuscripts of silver halide photographs, etc., and these may be mixed together on a single manuscript, and the manuscript and copy image are juxtaposed,
In particular, it is desired to faithfully reproduce colors. Color reproducibility is particularly important among full-color images, and is influenced by the color tone, transparency, gloss, gradation, etc. of the fixed image. Color reproduction consists of subtractive color mixing or juxtaposed additive color mixing using three primary color toners: yellow, magenta, and cyan. Subtractive color mixing requires the use of transparent toners that transmit light.
また、オーバーヘッドプロジェクタ−等に使用する透明
フィルムに定着した画像も光透過性でないと色再現がで
きない。Furthermore, images fixed on transparent films used in overhead projectors and the like cannot be reproduced in color unless they are transparent to light.
フルカラー用トナーの電荷制御剤は無色又は実質的に無
色に近い淡色でなければならない。従来から黒色トナー
用電荷制御剤として知られている塩基性ニグロシン染料
は、それ自体が黒色状であるため、フルカラー用トナー
には使用できない。The charge control agent for full-color toners must be colorless or substantially colorless and light-colored. Basic nigrosine dye, which has been conventionally known as a charge control agent for black toners, cannot be used in full-color toners because it is black in color.
現在、フルカラー用トナーの電荷制御剤としては、第４
級アンモニウム塩及びポリアミンが知られている（特開
昭６２−９６６号公報参照）。しかし電荷制御剤として
第４級アンモニウム塩、キャリアー粒子として例えば、
酸化鉄粉、アクリル系やシリコーン系等の樹脂コートキ
ャリアーを用いたカラー１〜ナーば、繰り返し複写にお
いて帯電量及び画像濃度が不安定であり、かつカブリが
生しるという問題点がある。また電荷制御剤としてポリ
アミンを用いた場合は、帯電量が高く、カブリはみられ
なかったが、縁り返し複写において帯電量が急」二昇し
、画像濃度が低下するという問題点がある。Currently, the fourth charge control agent for full color toner is
Ammonium salts and polyamines are known (see JP-A-62-966). However, quaternary ammonium salt as a charge control agent, e.g. as a carrier particle,
Colors 1 to 3 using resin-coated carriers such as iron oxide powder, acrylic, silicone, etc. have the problem that the amount of charge and image density are unstable and fog occurs during repeated copying. Furthermore, when polyamine was used as the charge control agent, the amount of charge was high and no fogging was observed, but there was a problem in that the amount of charge increased rapidly in edge copying, resulting in a decrease in image density.
〈発明が解決しようとする課題〉
本発明は、上記の事情に鑑み、透明性のある良好な画像
を得ることができ、電荷制御特性に優れた耐久性の良好
な正帯電性イエロー現像剤を提供するものである。<Problems to be Solved by the Invention> In view of the above circumstances, the present invention provides a positively chargeable yellow developer that can obtain transparent and good images, has excellent charge control characteristics, and has good durability. This is what we provide.
く課題を解決するだめの手段〉
本発明は、少なくとも結着樹脂及び次式（Ｉ）で表わさ
れるジスアゾ系顔料よりなるイエロートーナーと、フッ
化ビニリデン系樹脂を主成分とする被ｒｉｉ層を有する
キャリアー粒子とからなる正帯電性イエロー現像剤であ
る。Means for Solving the Problems The present invention provides a yellow toner comprising at least a binder resin and a disazo pigment represented by the following formula (I), and a toner layer comprising a vinylidene fluoride resin as a main component. This is a positively charging yellow developer consisting of carrier particles.
本発明に用いられるイエロートナーに含有される結着樹
脂としては、通常の熱ロール定着用樹脂よりも溶融粘度
の低いシャープメルト樹脂、特にポリエステル樹脂、エ
ポキシ樹脂、スチレン−アクリル共重合体樹脂等が好ま
しいが、これらに限定されるものではない。また式（Ｉ
）で表わされるジスアゾ系顔料としては、市販の製品を
用いることができる。As the binder resin contained in the yellow toner used in the present invention, sharp melt resins having a lower melt viscosity than ordinary hot roll fixing resins, especially polyester resins, epoxy resins, styrene-acrylic copolymer resins, etc. are used. These are preferred, but not limited to. Also, the formula (I
) Commercially available products can be used as the disazo pigment represented by.
本発明におけるイエロートナーは、上記のジスアゾ系顔
料自体がトナーに正帯電性を付与するので、例えば染料
系の電荷制御剤を併用しなくても十分な正帯電特性が得
られるが、ロングライフにおいて十分に安定した帯電特
性を得るためには、例えば第４級アンモニウム塩の如き
無色又は淡色の正帯電用電荷制御剤を補助的に併用する
ことが好ましい。In the yellow toner of the present invention, the above-mentioned disazo pigment itself imparts positive chargeability to the toner, so sufficient positive chargeability can be obtained even without the use of a dye-based charge control agent, for example. In order to obtain sufficiently stable charging characteristics, it is preferable to additionally use a colorless or light-colored charge control agent for positive charging, such as a quaternary ammonium salt.
本発明におけるイエロートナーは、必要に応じてポリプ
ロピレン、ポリエチレン、合成ワックス、天然ワックス
などの内添剤を含有していてもよい。The yellow toner in the present invention may contain internal additives such as polypropylene, polyethylene, synthetic wax, natural wax, etc., if necessary.
また疎水性シリカ、アルミナ、ポリ弗化ビニリデン、ポ
リスチレン、ポリメチルメタクリレート等の微粉末で後
処理されていてもよい。It may also be post-treated with a fine powder of hydrophobic silica, alumina, polyvinylidene fluoride, polystyrene, polymethyl methacrylate, or the like.
本発明におけるイエロー１−ナーは、常法により結着樹
脂及び式（Ｉ）のジスアゾ系顔料、更に必要に応じて用
いられる添加剤等を混線分散し、粉砕したのち分級する
ことにより得られる。The yellow 1-ner in the present invention can be obtained by cross-dispersing the binder resin, the disazo pigment of formula (I), and additives used as necessary, pulverizing, and then classifying in a conventional manner.
次に、本発明に用いられる−１−ヤリアー粒子は、フッ
化ビニリデン系樹脂を主成分とする被覆層を有するもの
である。そのコア材としては、一般に用いられている多
孔質鉄粉、酸化鉄粉、フェライト粒子等、更に、四三酸
化鉄を含有する樹脂粒子、その他各種の金属又は金属化
合物粒子等の磁性を有するものであれば材質、形状等は
特に限定されることなく使用することができる。また、
フッ化ビニリデン系樹脂としては、フッ化ビニリデンの
単独重合体及び四フッ化エチレン、酢酸ビニル、アクリ
ル系等の七ツマ−との共重合体が挙げられる。被覆層は
上記の如きフン化ビニリデン系樹脂を主成分とするもの
で、必要に応じて一般にコーティングキャリアーに用い
られている樹脂や、帯電性や機械的強度等の調整のため
の添加剤等を含有することもできる。なお、被覆層には
全被覆成分に対してフッ化ビニリデン成分が５０％以上
含有することが好ましい。また、この様な被覆層を前記
コア材の表面に形成するには、フローコーター法、スプ
レードライヤー法等の従来公知の方法を適宜用いて形成
することができる。被覆層の厚さは単分子層レベルから
約５μ位までの薄層が好ましい。Next, the -1-Yaria particles used in the present invention have a coating layer containing vinylidene fluoride resin as a main component. The core materials include generally used porous iron powder, iron oxide powder, ferrite particles, etc., as well as resin particles containing triiron tetroxide, and other magnetic materials such as various metal or metal compound particles. If so, the material, shape, etc. can be used without any particular limitations. Also,
Examples of vinylidene fluoride-based resins include homopolymers of vinylidene fluoride and copolymers with heptamers such as tetrafluoroethylene, vinyl acetate, and acrylic resins. The coating layer is mainly composed of vinylidene fluoride resin as mentioned above, and if necessary, it may contain resins commonly used for coating carriers and additives for adjusting chargeability, mechanical strength, etc. It can also contain. The coating layer preferably contains 50% or more of the vinylidene fluoride component based on the total coating components. Further, such a coating layer can be formed on the surface of the core material by appropriately using conventionally known methods such as a flow coater method and a spray dryer method. The thickness of the coating layer is preferably as thin as a monomolecular layer to about 5 μm.
本発明の正帯電性イエロー現像剤は、前記イエロートナ
ーとキャリアー粒子とを常法により混合することによっ
て得られるものである。ここで混合割合は、用いられる
イエロートナー及びキャリアー粒子の粒度分布や形態等
によって適宜決定されるものであるが、イエロートナー
の割合が通常２〜１０重量％程度が好ましい。The positively chargeable yellow developer of the present invention is obtained by mixing the yellow toner and carrier particles in a conventional manner. The mixing ratio here is appropriately determined depending on the particle size distribution and morphology of the yellow toner and carrier particles used, but it is preferable that the ratio of the yellow toner is usually about 2 to 10% by weight.
〈実施例〉
次に実施例により本発明を説明する。なお、ここで配合
を表わす部数はすべて重量部である。<Examples> Next, the present invention will be explained by examples. It should be noted that all parts expressed herein are parts by weight.
実施例１
下記組成にて混合し、エクストルーダーにて熱混練して
冷却後、粉砕・分級して平均粒径（体積５０％径、コー
ルタ−カウンター使用）約１０μのイエロートナーを得
た。Example 1 The following composition was mixed, heat-kneaded using an extruder, cooled, and then crushed and classified to obtain a yellow toner having an average particle size (50% diameter by volume, using Coulter Counter) of about 10 μm.
次に粒度１５０／３２５メツシユのポリフッ化ビニリデ
ンコートキャリアー（関東電化工業社製、Ｂ２９）９３
．５部に上記イエローＩ−ナー６．５部を加え、■プレ
ンダーで１時間攪拌して本発明の正帯電性イエロー現像
剤を作製した。なお、ブローオフ帯電量測定装置（来遊
ケミカル社製）による該イエロートナーの摩擦帯電量は
１６．２μｃ／ｇであった。Next, a polyvinylidene fluoride coated carrier with a particle size of 150/325 mesh (manufactured by Kanto Denka Kogyo Co., Ltd., B29) 93
．． 6.5 parts of the Yellow I-ner described above was added to 5 parts of the yellow I-ner, and the mixture was stirred in a blender for 1 hour to prepare a positively chargeable yellow developer of the present invention. The triboelectric charge amount of the yellow toner measured by a blow-off charge measuring device (manufactured by Raiyu Chemical Co., Ltd.) was 16.2 μc/g.
上記の正帯電性イエロー現像剤を用いて、ＯＰＣ感光体
使用の複写機（シャープ社製、５ｐ＝８２６０ ）によ
りコピーしたところ、画像濃度、カプリ、階調性、刷毛
筋等画質は良好であった。また、透明フィルムにコピー
してオーバーヘッドプロジェクタ−により画質を確認し
たところ、スクリーン上に美しいイエロー色の映像が得
られ、透明性も優れていることがわかった。更に、繰り
返し複写試験を行ったところ、３万枚後も帯電量、画質
等初期とほとんど変わらず良好な耐久性が確認された。When copies were made using a copier using an OPC photoreceptor (manufactured by Sharp Corporation, 5p=8260) using the above positively charged yellow developer, the image quality such as image density, capri, gradation, and brush strokes was good. Ta. Furthermore, when the image was copied onto a transparent film and the image quality was checked using an overhead projector, a beautiful yellow image was obtained on the screen, and the transparency was also found to be excellent. Furthermore, when repeated copying tests were conducted, it was confirmed that even after 30,000 copies, good durability was confirmed with almost no change in charge amount, image quality, etc. from the initial stage.
実施例２
イエロートナーの組成を下記のように変えた以外は実施
例１と全く同様にして本発明の正帯電性イエロー現像剤
を作製した。なお、該イエロートナーの摩擦帯電量は１
９．６μｃ／ｇであった。Example 2 A positively chargeable yellow developer of the present invention was prepared in exactly the same manner as in Example 1, except that the composition of the yellow toner was changed as shown below. The yellow toner has a triboelectric charge amount of 1
It was 9.6 μc/g.
次にこの現像剤を用いて実施例１と同様にして、画質、
透明性、耐久性を評価したところ、いずれも良好で優れ
た現像剤であることが確認された。Next, using this developer, the image quality was improved in the same manner as in Example 1.
When transparency and durability were evaluated, it was confirmed that both were good and an excellent developer.
実施例３
イエロートナーの組成を下記の様に変えた以外は実施例
１と全く同様にして本発明の正帯電性イエロー現像剤を
作製した。なお、該イエロートナーの摩擦帯電量は１６
．８μｃ／ｇであった。Example 3 A positively chargeable yellow developer of the present invention was prepared in exactly the same manner as in Example 1 except that the composition of the yellow toner was changed as shown below. The yellow toner has a triboelectric charge amount of 16
．． It was 8 μc/g.
次にこの現像剤を用いて実施例１と同様にして、画質、
透明性、耐久性を評価したところ、いずれも良好で優れ
た現像剤であることが確認された。Next, using this developer, the image quality was improved in the same manner as in Example 1.
When transparency and durability were evaluated, it was confirmed that both were good and an excellent developer.
比較例１
キャリアー粒子を１５０／３２５メツシユのポリテトラ
フルオロエチレンコートキャリアーに変えた以外は実施
例１と全く同様にして比較用の正帯電性イエロー現像剤
を作製した。なお、この場合におけるイエロートナーの
摩擦帯電量は２５．４μｃ／ｇであった。Comparative Example 1 A positively chargeable yellow developer for comparison was prepared in exactly the same manner as in Example 1 except that the carrier particles were changed to a polytetrafluoroethylene coated carrier of 150/325 mesh. Note that the triboelectric charge amount of the yellow toner in this case was 25.4 μc/g.
次にこの現像剤を用いて実施例１と同様にして、画質、
透明性、耐久性を評価したところ、繰り返し複写時の帯
電量の上昇が大きいため、画像濃度が大幅に低下してし
まうという問題があり、６ナ枚で評価を中止した。Next, using this developer, the image quality was improved in the same manner as in Example 1.
When the transparency and durability were evaluated, there was a problem in that the image density significantly decreased due to a large increase in the amount of charge during repeated copying, and the evaluation was discontinued after 6 copies.
比較例２
キャリアー粒子を１５０／３２５メツシユのスチレンｎ
−ブチルメタクリレート共重合体コートキャリアーに変
えた以外は実施例１と全く同様にして比較用の正帯電性
イエロー現像剤を作製した。なお、この場合におけるイ
エロートナーの摩擦帯電量は８．９μｃｏｇであった。Comparative Example 2 Carrier particles were 150/325 mesh styrene n
A positively chargeable yellow developer for comparison was prepared in exactly the same manner as in Example 1 except that the carrier was coated with a -butyl methacrylate copolymer. Note that the triboelectric charge amount of the yellow toner in this case was 8.9 μcog.
次にこの現像剤を用いて実施例１と同様にして、画質、
透明性、耐久性を評価したところ、初期画質においてカ
ブリ、刷毛筋が不良で、更にトナー飛散も多いという問
題を有するため、耐久性テスＩへは実施しなかった。Next, using this developer, the image quality was improved in the same manner as in Example 1.
When transparency and durability were evaluated, durability test I was not conducted because the initial image quality was poor in terms of fogging and brush strokes, and there was also a lot of toner scattering.
比較例３
イエロートナーの組成において不溶性ジスアゾ系顔料に
変えてベンズイミダシロン系顔料（大日本インキ化学社
裂、ＫＥＴ Ｙｅｌｌｏｗ ４０２）を用いた以外は実
施例１と全く同様にして比較用の正帯電性イエロー現像
剤を作製したつなお、この場合におけるイエロートナー
のＪｒ擦帯電量は９．５μｃ／ｇであ っ ｌこ。Comparative Example 3 A comparative positive was prepared in the same manner as in Example 1, except that a benzimidacylon pigment (KET Yellow 402, manufactured by Dainippon Ink Chemical Co., Ltd.) was used instead of an insoluble disazo pigment in the composition of the yellow toner. While the chargeable yellow developer was prepared, the amount of triboelectric charge of the yellow toner in this case was 9.5 μc/g.
次にこの現像剤を用いて実施例１と同様にして、画質、
透明性、耐久性を評価したところ、初期画質においてカ
ブリ、刷毛筋が不良で、更にトナー飛敗も多いとい・う
問題を有するため、耐久性テストは実施しなかった。Next, using this developer, the image quality was improved in the same manner as in Example 1.
When evaluating transparency and durability, durability tests were not conducted because the initial image quality was poor in terms of fogging and brush streaks, and there was also a lot of toner scattering.
比較例４
イエロートナーのＮ１３成において不溶性ジスアゾ系顔
料として東洋インキ製造社製、ｋ １２０１Ｌｉｏｎｏ
ｌ Ｙｅｌｌｏｗを用いた以外は実施例１と全く同様に
して比較用の正帯電性イエロー現像剤を作製した。なお
、この場合におけるイエ０−１ナーの摩擦帯電量は２４
ｏ２μｃ／ｇであった。Comparative Example 4 K 1201Liono manufactured by Toyo Ink Manufacturing Co., Ltd. as an insoluble disazo pigment in N13 composition of yellow toner
A positively chargeable yellow developer for comparison was prepared in exactly the same manner as in Example 1 except that 1 Yellow was used. In addition, in this case, the amount of triboelectric charge of Ye 0-1 toner is 24
o2μc/g.
次にこの現像剤を用いて実施例１と同様にして、画質、
透明性、耐久性を評価したところ、繰り返し複写時の帯
ＴＬ鼠の上昇が大きいため、画像濃度が大幅に低下して
しまうという問題があり、６ナ枚で評価を中止した。Next, using this developer, the image quality was improved in the same manner as in Example 1.
When the transparency and durability were evaluated, there was a problem that the band TL increased significantly during repeated copying, resulting in a significant decrease in image density, so the evaluation was discontinued after 6 copies.
以上の実施例１〜３及び比較例１〜４の結果をまとめる
と表−１の通りである。なお、帯電量はブローオフ粉体
帯電量測定装置（来遊ケミカル社製）、画像濃度はマク
ベス濃度計を用いて測定した。またカブリ、階調性及び
刷毛筋は目視判定であり、◎は全く問題なく優れている
こと、Ｏは良好、Δは実用上の限度レベル、×は問題あ
りを意味するものである。The results of Examples 1 to 3 and Comparative Examples 1 to 4 are summarized in Table 1. The charge amount was measured using a blow-off powder charge amount measuring device (manufactured by Raiyu Chemical Co., Ltd.), and the image density was measured using a Macbeth densitometer. Further, fogging, gradation, and brush strokes are visually judged, and ◎ means excellent without any problems, O means good, Δ means practical limit level, and × means problems.
表１の結果から明らかな様に、本発明の正帯電性イエロ
ー現像剤は特定のジスアゾ系顔料を用いたイエロートナ
ーとフン化ビニリデン系樹脂コートキャリアーとを組合
わせたことによって優れた特性が得られたことが確認で
きた。As is clear from the results in Table 1, the positively chargeable yellow developer of the present invention has excellent characteristics due to the combination of a yellow toner using a specific disazo pigment and a vinylidene fluoride resin coated carrier. I was able to confirm that it was done.
〈発明の効果〉
本発明の正帯電性イエロー現像剤は、画像濃度、カブリ
、階調性等の画質が良好な、しかも繰り返しコピーにお
いて画質や帯電量が安定している優れた耐久性を有する
ものである。また画像の透明性も良好なため、オーバー
ヘッドプロジェクタ−用の透明シートへのコピーや、フ
ルカラーコピーにも良好に使用できるものである。<Effects of the Invention> The positively chargeable yellow developer of the present invention has good image quality such as image density, fog, and gradation, and has excellent durability with stable image quality and charge amount even after repeated copying. It is something. Furthermore, since the image has good transparency, it can be used satisfactorily for copying onto transparent sheets for overhead projectors and for full-color copying.
Claims (1)
スアゾ系顔料よりなるイエロートナーと、フッ化ビニリ
デン系樹脂を主成分とする被覆層を有するキャリアー粒
子とからなることを特徴とする正帯電性イエロー現像剤
。 ▲数式、化学式、表等があります▼（ I ）[Scope of Claims] A yellow toner comprising at least a binder resin and a disazo pigment represented by the following formula (I), and carrier particles having a coating layer containing vinylidene fluoride resin as a main component. Positively charging yellow developer. ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63159325A JPH0210375A (en) | 1988-06-29 | 1988-06-29 | Positively chargeable yellow developing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63159325A JPH0210375A (en) | 1988-06-29 | 1988-06-29 | Positively chargeable yellow developing agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0210375A true JPH0210375A (en) | 1990-01-16 |
| JPH0571947B2 JPH0571947B2 (en) | 1993-10-08 |
Family
ID=15691342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63159325A Granted JPH0210375A (en) | 1988-06-29 | 1988-06-29 | Positively chargeable yellow developing agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0210375A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029058A (en) * | 2010-12-08 | 2011-04-27 | 郭敏英 | Pedal skateboard |
| CN102274625A (en) * | 2011-06-13 | 2011-12-14 | 路海燕 | Pressure-operated scooter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4951950A (en) * | 1972-05-30 | 1974-05-20 | ||
| JPS55118047A (en) * | 1979-03-05 | 1980-09-10 | Xerox Corp | Carrier powder coating method |
| JPS55163544A (en) * | 1979-06-04 | 1980-12-19 | Xerox Corp | Production of conductorrcovered carrier particles |
| JPS61126564A (en) * | 1984-11-26 | 1986-06-14 | Konishiroku Photo Ind Co Ltd | Color developer for developing electrostatic charge image |
| JPS62106475A (en) * | 1985-10-30 | 1987-05-16 | ゼロツクス コ−ポレ−シヨン | Developing agent composition containing coating carrier particle |
| JPS6336265A (en) * | 1986-07-31 | 1988-02-16 | Konica Corp | Electrostatic image developing toner for heat roller fixing |
-
1988
- 1988-06-29 JP JP63159325A patent/JPH0210375A/en active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4951950A (en) * | 1972-05-30 | 1974-05-20 | ||
| JPS55118047A (en) * | 1979-03-05 | 1980-09-10 | Xerox Corp | Carrier powder coating method |
| JPS55163544A (en) * | 1979-06-04 | 1980-12-19 | Xerox Corp | Production of conductorrcovered carrier particles |
| JPS61126564A (en) * | 1984-11-26 | 1986-06-14 | Konishiroku Photo Ind Co Ltd | Color developer for developing electrostatic charge image |
| JPS62106475A (en) * | 1985-10-30 | 1987-05-16 | ゼロツクス コ−ポレ−シヨン | Developing agent composition containing coating carrier particle |
| JPS6336265A (en) * | 1986-07-31 | 1988-02-16 | Konica Corp | Electrostatic image developing toner for heat roller fixing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029058A (en) * | 2010-12-08 | 2011-04-27 | 郭敏英 | Pedal skateboard |
| CN102274625A (en) * | 2011-06-13 | 2011-12-14 | 路海燕 | Pressure-operated scooter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0571947B2 (en) | 1993-10-08 |
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