JPH01101558A - Toner for developing electrostatic charge image - Google Patents
Toner for developing electrostatic charge imageInfo
- Publication number
- JPH01101558A JPH01101558A JP62258721A JP25872187A JPH01101558A JP H01101558 A JPH01101558 A JP H01101558A JP 62258721 A JP62258721 A JP 62258721A JP 25872187 A JP25872187 A JP 25872187A JP H01101558 A JPH01101558 A JP H01101558A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- under
- color
- coloring agent
- white
- 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
- 239000003086 colorant Substances 0.000 claims abstract description 16
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 239000007850 fluorescent dye Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000012463 white pigment Substances 0.000 claims abstract description 6
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 abstract description 4
- 229910001887 tin oxide Inorganic materials 0.000 abstract description 4
- 239000002223 garnet Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 239000000975 dye Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 239000000049 pigment Substances 0.000 description 5
- QPQKUYVSJWQSDY-UHFFFAOYSA-N 4-phenyldiazenylaniline Chemical compound C1=CC(N)=CC=C1N=NC1=CC=CC=C1 QPQKUYVSJWQSDY-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 235000010215 titanium dioxide Nutrition 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 108091008695 photoreceptors Proteins 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 235000014692 zinc oxide Nutrition 0.000 description 2
- VFPLSXYJYAKZCT-VOTSOKGWSA-N 4-[(e)-2-phenylethenyl]aniline Chemical compound C1=CC(N)=CC=C1\C=C\C1=CC=CC=C1 VFPLSXYJYAKZCT-VOTSOKGWSA-N 0.000 description 1
- IJCLOOKYCQWSJA-UHFFFAOYSA-N 7-amino-3-phenylchromen-2-one Chemical compound O=C1OC2=CC(N)=CC=C2C=C1C1=CC=CC=C1 IJCLOOKYCQWSJA-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 description 1
- 229960000956 coumarin Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin 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
- 230000001678 irradiating effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- YLGXILFCIXHCMC-JHGZEJCSSA-N methyl cellulose Chemical compound COC1C(OC)C(OC)C(COC)O[C@H]1O[C@H]1C(OC)C(OC)C(OC)OC1COC YLGXILFCIXHCMC-JHGZEJCSSA-N 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 239000001007 phthalocyanine dye Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- 239000001022 rhodamine dye Substances 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000010558 suspension polymerization method Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-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
- G03G9/0926—Colouring agents for toner particles characterised by physical or chemical properties
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印刷法等において静電荷
像を現像するのに用いられるトナーに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a toner used for developing an electrostatic image in electrophotography, electrostatic printing, or the like.
感光体又は誘電体を用いた画像形成法としては、電子写
真法、静電印刷法あるいは静電記録法が一般的であるが
、その現像原理はいずれの方法においても本質的に同じ
である。As an image forming method using a photoreceptor or dielectric, electrophotography, electrostatic printing, or electrostatic recording are generally used, and the development principle is essentially the same for all methods.
例えば電子写真法においては、感光体の表面を一様帯電
し次いで露光を行なって静電荷像を形成し、この静電荷
像を乾式現像剤にて現像し、得られたトナー像をそのま
ま定着するか、もしくは普通紙等の記録シートに転写し
てから定着することにより最終画像が得られる。For example, in electrophotography, the surface of a photoreceptor is uniformly charged, then exposed to light to form an electrostatic charge image, this electrostatic charge image is developed with a dry developer, and the resulting toner image is fixed as is. Alternatively, the final image can be obtained by transferring the image to a recording sheet such as plain paper and then fixing it.
上記の乾式現像剤としては、トナーのみからなる１成分
系現像剤又はキャリアとトナーの混合粉体である２成分
現像剤が通常使用されている。トナーにも種々の組成、
構造があるが、少なくとも定着用樹脂と顔料又は染料等
の着色剤を含有している点ではいずれのトナーも同じで
ある。そのため得られた複写画像は可視光のもとて判読
できるようになっている。従って機密文書等の限られた
範囲で使用されるべき書類をこのようなトナーを用いて
複写することは、複写物の紛失等による機密の漏洩に繋
がる。As the above-mentioned dry developer, a one-component developer consisting only of toner or a two-component developer consisting of a mixed powder of carrier and toner is usually used. Toner also has various compositions,
Although they have different structures, all toners are the same in that they contain at least a fixing resin and a coloring agent such as a pigment or dye. Therefore, the resulting copy image can be read under visible light. Therefore, using such toner to copy documents that are to be used within a limited range, such as confidential documents, may lead to leakage of confidentiality due to loss of copies, etc.
そこで従来は、特定色の機密文書作成の用紙を用いて再
複写したものの判読をできないようにすること、あるい
はトナーに螢光成分を含ませて再複写したものの画像濃
度を低くすることが提案されている。また、通常は無色
あるいは淡色であるが、特定の温度で発色する組成の着
色剤を含むトナーで画像を形成することも提案されてい
る。Conventionally, it has been proposed to use a specific color of confidential document paper to make the recopies unreadable, or to reduce the image density of the recopies by adding a fluorescent component to the toner. ing. It has also been proposed to form an image using a toner containing a colorant that is normally colorless or light-colored but has a composition that develops color at a specific temperature.
（特開昭６２−１４１６３号）
〔発明が解決しようとする問題点〕
しかしながら、上述した従来の提案には次のような問題
点がある。(Unexamined Japanese Patent Publication No. 62-14163) [Problems to be Solved by the Invention] However, the above-mentioned conventional proposal has the following problems.
特定色の機密文書作成用紙を用いた場合は、書類として
は極めて読みずらく、実用的ではない。When confidential document preparation paper of a specific color is used, it is extremely difficult to read as a document and is not practical.
従来の螢光成分を含むトナーを用いた場合は、書類が極
めて読みずらく、又再複写時の画像濃度もそれほど低い
ものではない。特定の温度で発色する組成の着色剤を含
むトナーを用いる場合は、再複写は不可能であるが、書
類を判読するためには書類の加熱が必要である。When a conventional toner containing a fluorescent component is used, the document is extremely difficult to read, and the image density upon re-copying is not so low. If a toner containing a coloring agent that develops color at a specific temperature is used, recopying is not possible, but the document must be heated in order to be readable.
更に、重要なことはトナーに特定色を持たせるため使用
材料が非常に限定され、良好な現像特性を安定して保持
する静電気及び電気的特性が得られにくいという問題が
ある。初期的には良好な画像が得られても、連続コピー
を行なうと、すぐに画像品質が低下し実用的でなくなる
。Furthermore, what is important is that the materials used are very limited in order to give the toner a specific color, and it is difficult to obtain electrostatic and electrical properties that stably maintain good development properties. Even if a good image is obtained initially, when continuous copying is performed, the image quality quickly deteriorates and becomes impractical.
したがって本発明の目的は、可視光線の下では判読でき
ないが、必要な場合には容易に判読できしかも、良好な
画像が長寿命で安定して得られる静電荷像現像用トナー
を提供することである。Therefore, an object of the present invention is to provide a toner for developing an electrostatic image which is not legible under visible light but is easily legible when necessary and which can stably produce good images over a long life. be.
これは、白色顔料を加えることにより、分散性を向上し
、トナー品質の安定化を計り、かつ、導電性白色粉末は
現像性を向上させ画像品質の改善に寄与するという効果
による。This is due to the effect that the addition of white pigment improves dispersibility and stabilizes toner quality, and the conductive white powder improves developability and contributes to improvement of image quality.
本発明の静電荷像現像用トナーは、定着用樹脂と、紫外
線下のみで発色する螢光染料と、荷電制御性を有する着
色剤と、白色顔料と、更に必要に応じ白色導電粉末とを
含有することを特徴とする。The toner for developing electrostatic images of the present invention contains a fixing resin, a fluorescent dye that develops color only under ultraviolet light, a colorant having charge control properties, a white pigment, and, if necessary, a white conductive powder. It is characterized by
本発明のトナーは、樹脂成分と共に、上記３ないし４種
類の染料又は顔料を有するので、通常の電子写真装置に
より、可視光の下では判読不能であるが、紫外線を照射
すると十分に判読可能となる複写画像を得ることができ
る。Since the toner of the present invention contains the three or four types of dyes or pigments mentioned above together with the resin component, it is unreadable under visible light using a normal electrophotographic device, but becomes fully legible when irradiated with ultraviolet light. A copy image can be obtained.
以下本発明の詳細を述べる。The details of the present invention will be described below.
本発明のトナーの必須成分の一つである定着用樹脂とし
ては、トナー用樹脂として通常用いられている樹脂を使
用することができ、定着方式に応じて適宜選定すればよ
い。例えばヒートロール定着方式の場合は、ポリスチレ
ン、スチレン−アクリル系共重合体、スチレン−ブタジ
ェン共重合体等のスチレン系樹脂、エポキシ樹脂、ポリ
エステル樹脂等の一種又は二種以上が使用できる。As the fixing resin, which is one of the essential components of the toner of the present invention, resins commonly used as toner resins can be used, and may be appropriately selected depending on the fixing method. For example, in the case of a heat roll fixing method, one or more of styrene resins such as polystyrene, styrene-acrylic copolymers, and styrene-butadiene copolymers, epoxy resins, and polyester resins can be used.
螢光染料は、トナー像を紫外線をあてると判読できるも
のとするために添加される。すなわち本発明において使
用される螢光染料は、一般に波長領域が４〜４００ｎｍ
程度の電磁波と定義されている紫外線を強く吸収する性
質を有することが必要である。このような螢光染料とし
ては、例えば、３−フェニル−７−アミノ−クマリン、
４−アミノステイルベン、Ｎ−アルキル−４−アミノナ
ファリミド等が挙げられる。Fluorescent dyes are added to make the toner image legible when exposed to ultraviolet light. That is, the fluorescent dye used in the present invention generally has a wavelength range of 4 to 400 nm.
It is necessary to have the property of strongly absorbing ultraviolet rays, which are defined as electromagnetic waves of a certain degree. Examples of such fluorescent dyes include 3-phenyl-7-amino-coumarin,
Examples include 4-aminostilbene, N-alkyl-4-aminonafarimide, and the like.
荷電制御性を有する着色剤は、トナー像を記録シートと
同色とし、可視光の下では判読できないようにすること
と、トナーに電荷を付与させることを目的として添加さ
れる。このような電子吸引性又は電子供与性のある着色
剤としては、Ｃ，１，ベーシック バイオレット １０
のようなローダミン系染料、Ｃ，１，ソルベント イエ
ロー１６２、Ｃ，！。The colorant having charge control properties is added for the purpose of making the toner image the same color as the recording sheet and making it unreadable under visible light, and for imparting charge to the toner. Examples of such a coloring agent having electron-withdrawing or electron-donating properties include C,1, Basic Violet 10
Rhodamine dyes such as C,1, Solvent Yellow 162, C,! .
ソルベント イエロー ７９のようなアゾメチン系油溶
性染料、Ｃ，１，ソルベントブルー ２５．Ｃ，Ｉ。Azomethine oil-soluble dyes such as Solvent Yellow 79, C,1, Solvent Blue 25. C.I.
ダイレクト ブルー ８６のような銅フタロシアン系染
料、含金属錯体染料、フタロシアニングリーン等が挙げ
られる。着色剤は、可視光を透光し易くする点から、顔
料より染料の方が好ましいが両方使用できる。Examples include copper phthalocyanine dyes such as Direct Blue 86, metal-containing complex dyes, and phthalocyanine green. As the coloring agent, dyes are preferred over pigments because they allow visible light to pass through easily, but both can be used.
また、一般に上記の螢光染料および着色剤は樹脂との濡
れ性が悪いので樹脂中に均一に分散されにくい、そこで
本発明においては、上記染料の分散性を向上し、もって
トナー画像の色安定化及び長寿命化をはかるために、ア
ルミナ、亜鉛華、チタン白、アンチモン白、硫化亜鉛等
の白色顔料を添加する。In addition, in general, the above-mentioned fluorescent dyes and colorants have poor wettability with resins, so it is difficult to disperse them uniformly in the resin. Therefore, in the present invention, the dispersibility of the above-mentioned dyes is improved, thereby stabilizing the color of toner images. White pigments such as alumina, zinc white, titanium white, antimony white, and zinc sulfide are added in order to increase the temperature and longevity of the product.
更に、上記の着色剤のみでは、トナーに現像に必要な電
荷を与えられない場合は、酸化スズ、イツトリウム・鉄
・ガーネット、希土類・鉄・ガーネットのような白色導
電粉末を添加してもよい。Furthermore, if the above-mentioned colorant alone cannot provide the toner with the charge necessary for development, a white conductive powder such as tin oxide, yttrium/iron/garnet, or rare earth/iron/garnet may be added.
これらは、現像性の向上等には特に有効である。These are particularly effective for improving developability.
なおこれ以外にも離型剤、流動化剤等の通常のトナー用
添加剤を含んでいてもよい。In addition to these, the toner composition may also contain conventional toner additives such as a release agent and a fluidizing agent.
上記の各材料の添加量は、記録シートの色調、複写条件
などに応じて適宜定めればよいが、一般には、螢光染料
、着色剤、白色顔料および白色導電粉末、更に他の添加
物は単独で０．１〜−１０重量％の範囲とし、これら全
体では２０重量％以下がよい。The amount of each of the above materials to be added may be determined as appropriate depending on the color tone of the recording sheet, copying conditions, etc., but in general, fluorescent dyes, colorants, white pigments, white conductive powder, and other additives are The range is 0.1 to -10% by weight individually, and the total amount is preferably 20% by weight or less.
本発明のトナーは、通常のトナーと同様に、粉砕法、ス
プレードライ法、懸濁重合法等の公知の手法により製造
することができる。The toner of the present invention can be manufactured by a known method such as a pulverization method, a spray drying method, a suspension polymerization method, etc. in the same way as a normal toner.
本発明のトナーによれば、電子写真複写機のような通常
の電子写真装置で複写物を得ることができる。この複写
物は、水銀ランプのような紫外線ランプを照射すること
により容易に判読することができる。According to the toner of the present invention, copies can be obtained using a conventional electrophotographic apparatus such as an electrophotographic copying machine. This copy can be easily read by irradiating it with an ultraviolet lamp such as a mercury lamp.
以下の例により本発明を更に説明する。 The invention is further illustrated by the following examples.
叉施班上
スチレン−アクリル共重合体（三洋化成製ハイマーＳＢ
Ｍ ７０） ９０．５重量部、３−フェニル−７−アミ
ド−クマリン０．５重量部、４級アンモニウム塩、１重
量部、チタン白５重量部、低分子量ポリプロピレン（三
洋化成製ビスコール５５０Ｐ） ３ｆＥｉ１部を乾式
予備混合し、加熱混練し、冷却固化後粉砕し、次いで分
級して平均粒径１２μｍの正帯電トナーを得た。Styrene-acrylic copolymer (Himer SB manufactured by Sanyo Chemical Co., Ltd.)
M70) 90.5 parts by weight, 0.5 parts by weight of 3-phenyl-7-amide-coumarin, 1 part by weight of quaternary ammonium salt, 5 parts by weight of titanium white, low molecular weight polypropylene (Viscol 550P manufactured by Sanyo Chemical Co., Ltd.) 3fEi1 The mixture was dry premixed, heated, kneaded, cooled and solidified, pulverized, and then classified to obtain a positively charged toner having an average particle size of 12 μm.
このトナーをフェライトキャリア（日立金属製ＫＢＮ−
１２０）と混合してトナー濃度５％の現像剤を得た。こ
の現像剤を用いて市販の複写機（小西大製ＵＢｉＸ−３
０００機、但し現像ギ＋ｙブは１．５ｆｌ、ドクターギ
ャップは１．２ｆｉに変更）にて、白色の紙に複写（反
転現像）を行なった。得られた画像は可視光の下では判
読できなかったが、水銀ランプの下では判読できた。又
２万枚の連続コピーを行なったのちも良好な画像が得ら
れることを確認した。This toner was transferred to a ferrite carrier (Hitachi Metals KBN-
120) to obtain a developer with a toner concentration of 5%. Using this developer, a commercially available copying machine (UBiX-3 manufactured by Konishi University)
Copying (reversal development) was performed on white paper using a 000 machine (however, the developing feed was changed to 1.5 fl and the doctor gap was changed to 1.2 fi). The resulting image was unreadable under visible light, but was readable under a mercury lamp. It was also confirmed that good images could be obtained even after continuous copying of 20,000 sheets.
尖血医主
Ｃ，１，ソルベントブルー２５と、チタン白の代りに亜
鉛華を用いた以外は実施例１と同様の条件でトナーを作
成し、そしてブルーの紙を用いた以外は実施例１と同様
の条件で複写（正規現像）を行ない、実施例１と同様の
良好な結果が得られた。Example 1 A toner was prepared under the same conditions as in Example 1, except that Senketsu C, 1, Solvent Blue 25 and zinc white were used instead of titanium white, and Example 1 except that blue paper was used. Copying (regular development) was carried out under the same conditions as in Example 1, and the same good results as in Example 1 were obtained.
大施遣ユ
スチレン−アクリル共重合体（実施例１と同様）８５．
５重量部、３−フェニル−７−イミド−クマリン０．５
重量部、Ｃ，１，ソルベント イエロー１６２１重量部
、アルミナ５重量部、酸化スズ５重量部、低分子量ポリ
プロピレン（実施例１と同様）３重量部を用いて、実施
例１と同様のトナーを作成した。このトナーを用いて、
実施例１と同様の条件でイエローの紙に複写（正規現像
）を行なったところ、実施例１と同様の良好な結果が得
られた。Large application of justustyrene-acrylic copolymer (same as Example 1) 85.
5 parts by weight, 3-phenyl-7-imido-coumarin 0.5
A toner similar to Example 1 was prepared using 3 parts by weight of C,1, Solvent Yellow 1621 parts by weight, 5 parts by weight of alumina, 5 parts by weight of tin oxide, and 3 parts by weight of low molecular weight polypropylene (same as in Example 1). did. Using this toner,
When copying (regular development) was performed on yellow paper under the same conditions as in Example 1, good results similar to those in Example 1 were obtained.
なお以上の例では２成分系トナーについて説明したが、
本発明のトナーは１成分系のトナーであってもよいこと
はもちろんである。Note that in the above example, two-component toner was explained.
Of course, the toner of the present invention may be a one-component toner.
１較■１
実施例１においてチタン白を含まない、スチレン−アク
リル共重合体９５．５重量部、３−フェニル−７−アミ
ド−クマリン０．５重量部、４級アンモニウム塩１重量
部、低分子量ポリプロピレン３重量部の組成とし同様に
トナーを試作した。Comparison 1 In Example 1, 95.5 parts by weight of styrene-acrylic copolymer, 0.5 parts by weight of 3-phenyl-7-amide-coumarin, 1 part by weight of quaternary ammonium salt, and low A toner was similarly produced as a trial product with a composition of 3 parts by weight of molecular weight polypropylene.
この結果、初期的には紫外線下で判読できる良好な画像
を得たが、３０００枚複写後には地かぶりがふえ判読の
むずかしい画像となった。As a result, initially a good image was obtained that was readable under ultraviolet light, but after 3,000 copies were made, the background fog increased and the image became difficult to read.
五較■１
実施例３において酸化スズを含まない、スチレン−アク
リル共重合体９０．５重量部、３−フェニル−７−イミ
ド−クマリン０．５重量部、Ｃ，１，ソルベントイエロ
ー１６２１重量部、アルミナ５重量部、低分子量ポリプ
ロピレン３重量部の組成とし、同様にトナーを試作した
。Five comparisons 1 In Example 3, 90.5 parts by weight of styrene-acrylic copolymer, 0.5 parts by weight of 3-phenyl-7-imido-coumarin, and 1621 parts by weight of C,1, solvent yellow, which did not contain tin oxide. , 5 parts by weight of alumina, and 3 parts by weight of low molecular weight polypropylene, and a toner was similarly produced.
この結果、初期において、現像性が不十分なため判読の
むずかしい画像しか得られなかった。As a result, in the initial stage, only images that were difficult to read were obtained due to insufficient developability.
以上の通り、本発明のトナーは、少なくとも紫外線下の
みで発色する螢光染料と荷電制御剤を兼ねた着色剤と白
色顔料及び必要に応じ白色導電粉末とを含むので、これ
を用いて複写を行なうことにより可視光の下では判読不
能であっても、紫外線の下では容易に判読可能となる画
像が得られる。As described above, the toner of the present invention contains at least a fluorescent dye that develops color only under ultraviolet light, a colorant that also serves as a charge control agent, a white pigment, and, if necessary, a white conductive powder. By doing so, an image can be obtained that is illegible under visible light but easily readable under ultraviolet light.
したがって本発明のトナーは、機密文書の複写に適した
トナーであって、極めて実用性の高いものである。Therefore, the toner of the present invention is a toner suitable for copying confidential documents and is extremely practical.
Claims (2)
と、荷電制御性を有する着色剤と、白色顔料とを含有す
ることを特徴とする静電荷像現像用トナー。(1) A toner for developing an electrostatic image, comprising a fixing resin, a fluorescent dye that develops color only under ultraviolet light, a colorant having charge control properties, and a white pigment.
許請求の範囲第１項記載の静電荷像現像用トナー。(2) The toner for developing an electrostatic image according to claim 1, further comprising a white conductive powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62258721A JPH01101558A (en) | 1987-10-14 | 1987-10-14 | Toner for developing electrostatic charge image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62258721A JPH01101558A (en) | 1987-10-14 | 1987-10-14 | Toner for developing electrostatic charge image |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01101558A true JPH01101558A (en) | 1989-04-19 |
Family
ID=17324168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62258721A Pending JPH01101558A (en) | 1987-10-14 | 1987-10-14 | Toner for developing electrostatic charge image |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01101558A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0658146A1 (en) * | 1993-06-10 | 1995-06-21 | Moore Business Forms, Inc. | Variable data clear mark imagin |
| US20210294231A1 (en) * | 2020-03-18 | 2021-09-23 | Xerox Corporation | Fluorescent white toners and related methods |
| US11199787B2 (en) | 2020-03-18 | 2021-12-14 | Xerox Corporation | Fluorescent metallic toners and related methods |
| US11204562B2 (en) | 2020-03-18 | 2021-12-21 | Xerox Corporation | Fluorescent pink toners and related methods |
| US11209741B2 (en) | 2020-03-18 | 2021-12-28 | Xerox Corporation | Fluorescent green toners with enhanced brightness |
| US11448981B2 (en) | 2020-03-18 | 2022-09-20 | Xerox Corporation | Fluorescent latexes with enhanced brightness |
| US11453760B2 (en) | 2020-03-18 | 2022-09-27 | Xerox Corporation | Fluorescent orange latex with enhanced brightness and toners made therefrom |
| US11453759B2 (en) | 2020-03-18 | 2022-09-27 | Xerox Corporation | Fluorescent magenta latex with enhanced brightness and toners made therefrom |
-
1987
- 1987-10-14 JP JP62258721A patent/JPH01101558A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0658146A1 (en) * | 1993-06-10 | 1995-06-21 | Moore Business Forms, Inc. | Variable data clear mark imagin |
| AU676344B2 (en) * | 1993-06-10 | 1997-03-06 | Moore North America, Inc. | Variable data clear mark imagin |
| US20210294231A1 (en) * | 2020-03-18 | 2021-09-23 | Xerox Corporation | Fluorescent white toners and related methods |
| US11199786B2 (en) * | 2020-03-18 | 2021-12-14 | Xerox Corporation | Fluorescent white toners and related methods |
| US11199787B2 (en) | 2020-03-18 | 2021-12-14 | Xerox Corporation | Fluorescent metallic toners and related methods |
| US11204562B2 (en) | 2020-03-18 | 2021-12-21 | Xerox Corporation | Fluorescent pink toners and related methods |
| US11209741B2 (en) | 2020-03-18 | 2021-12-28 | Xerox Corporation | Fluorescent green toners with enhanced brightness |
| US11448981B2 (en) | 2020-03-18 | 2022-09-20 | Xerox Corporation | Fluorescent latexes with enhanced brightness |
| US11453760B2 (en) | 2020-03-18 | 2022-09-27 | Xerox Corporation | Fluorescent orange latex with enhanced brightness and toners made therefrom |
| US11453759B2 (en) | 2020-03-18 | 2022-09-27 | Xerox Corporation | Fluorescent magenta latex with enhanced brightness and toners made therefrom |
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