JPH02240662A - One component developing method - Google Patents
One component developing methodInfo
- Publication number
- JPH02240662A JPH02240662A JP1060642A JP6064289A JPH02240662A JP H02240662 A JPH02240662 A JP H02240662A JP 1060642 A JP1060642 A JP 1060642A JP 6064289 A JP6064289 A JP 6064289A JP H02240662 A JPH02240662 A JP H02240662A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- image
- latent image
- acid ester
- polyoxypropylene glycol
- 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
- 238000000034 method Methods 0.000 title claims description 16
- 229920001451 polypropylene glycol Polymers 0.000 claims abstract description 9
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 239000003086 colorant Substances 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims abstract description 8
- -1 fatty acid ester Chemical class 0.000 claims description 11
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 7
- 239000000194 fatty acid Substances 0.000 claims description 7
- 229930195729 fatty acid Natural products 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 150000002430 hydrocarbons Chemical group 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 1
- 239000002253 acid Substances 0.000 abstract 2
- 125000001931 aliphatic group Chemical group 0.000 abstract 2
- 150000002148 esters Chemical class 0.000 abstract 2
- 125000001183 hydrocarbyl group Chemical group 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 18
- 239000000203 mixture Substances 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000006082 mold release agent Substances 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 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 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 239000004952 Polyamide 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
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000001000 anthraquinone dye Substances 0.000 description 1
- 239000000987 azo dye Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- COHYTHOBJLSHDF-BUHFOSPRSA-N indigo dye Chemical compound N\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-BUHFOSPRSA-N 0.000 description 1
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000000049 pigment 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
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000001022 rhodamine dye Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電子写真における一成分現像方式に関し、詳
しくは、潜像担持体と隣接するトナー搬送部材上に特定
の一成分系現像剤を；ｆＪＮで形成し、この薄層化され
たトナーを潜像担持体に供給して現像を行なうようにし
た新規な現像方式である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a one-component developing system in electrophotography. ; fJN is formed, and this is a new developing method in which the thinned toner is supplied to a latent image carrier for development.
〔従来の技術］
電子写真法や静電記録等で採用される乾式現像方式には
、トナーおよびキャリアからなる二成分系現像剤を用い
る方式と、キャリアを含まない一成分系現像剤を用いる
方式とがある。前者の方式は、比較的安定して良好な画
像が得られるが、キャリアの劣化並びにトナーとキャリ
アとの混合比の変動等が発生しやすいことから長期間に
わたっての一定品質の画像は得られに（く、また、装置
の維持管理性やコンパクト化に難点がある。[Prior Art] Dry development methods used in electrophotography, electrostatic recording, etc. include two-component developers consisting of toner and carrier, and one using a one-component developer that does not contain carrier. There is. The former method allows relatively stable and good images to be obtained, but it is not possible to obtain images of constant quality over a long period of time because carrier deterioration and fluctuations in the mixture ratio of toner and carrier tend to occur. (Also, there are difficulties in maintaining the equipment and making it more compact.
そこで、こうした欠点を有しない後者の一成分系現像剤
を用いる方式が注目されるようになってきた。Therefore, the latter method using a one-component developer, which does not have these drawbacks, has been attracting attention.
ところで、この方式においては、通常少なくとも一つの
トナー搬送部材によってトナー（現像剤）を搬送し、か
つ、搬送されたトナーによって製造担持体に形成された
静電潜像を可視像化する手段が取られているが、その際
、トナー搬送部材表面を搬送するトナーの層厚は極力薄
くしなければならないとされている。このことは、二成
分系現像剤であってキャリアが非常に小さな径を有する
場合にも当てはまることであり、また、特に−成分系現
像剤を使用し、そのトナーとして電気抵抗の高いものを
用いたときには、現像装置によってこのトナーを帯電さ
せる必要があるため、トナーの層厚は著しく薄くされね
ばならない。このトナー層が厚いとトナー層の表面近傍
のみが帯電し、トナー層全体が均一に帯電しにくくなる
。By the way, in this method, the toner (developer) is usually conveyed by at least one toner conveying member, and means for visualizing the electrostatic latent image formed on the manufacturing carrier by the conveyed toner is provided. However, in this case, the layer thickness of the toner conveyed on the surface of the toner conveying member must be made as thin as possible. This applies even when a two-component developer is used and the carrier has a very small diameter, and especially when a two-component developer is used and the toner used is a toner with high electrical resistance. When this happens, the toner needs to be charged by a developing device, so the layer thickness of the toner must be made extremely thin. If this toner layer is thick, only the vicinity of the surface of the toner layer will be charged, making it difficult to charge the entire toner layer uniformly.
また、トナー搬送部材上のトナー層厚を規制する手段（
トナー層厚規制手段）には色々な方法が提案されている
。代表的な例としては、ドクターブレードをトナー搬送
部材に対置させ、これによりトナー搬送部材表面の搬送
されるトナーを押圧部材（ドクターブレード）で押さえ
付けてトナー層厚を制御するものである。In addition, means for regulating the toner layer thickness on the toner transport member (
Various methods have been proposed for toner layer thickness regulating means. A typical example is to control the toner layer thickness by placing a doctor blade opposite to a toner conveying member, and thereby pressing down the toner conveyed on the surface of the toner conveying member with a pressing member (doctor blade).
また、近年、電子写真プロセスを用いる複写機、プリン
ター等の分野では、更なる高速化、より高い環境安定性
が求められるようになってきた。このような状況のなか
、従来の現像剤として用いられているトナーは、高速機
に用いたり、低温、低湿下で用いたりする場合、その帯
電量を適正な値に維持するのが困難である。このとき磁
性トナーの帯電量は、適正値から、より増大する方向へ
変動するものであり、帯電量が適正値から、異常に増大
するとスリーブ上でのトナーのコート層厚みが不均一化
したり、画像濃度が低下したりして、画像の品質を低下
させる原因となる。Furthermore, in recent years, in the field of copying machines, printers, and the like that use electrophotographic processes, even higher speeds and higher environmental stability have been required. Under these circumstances, it is difficult to maintain the amount of charge of toner used as a conventional developer at an appropriate value when used in high-speed machines or in low temperature and low humidity environments. . At this time, the amount of charge of the magnetic toner fluctuates from an appropriate value in the direction of increasing. If the amount of charge increases abnormally from the appropriate value, the thickness of the toner coating layer on the sleeve may become uneven, or This may cause the image density to decrease, resulting in a deterioration in image quality.
〔発明が解決しようとする課題］
本発明の目的は、上記課題を解決した、特定組成のトナ
ーをトナー搬送部材上に薄層化させて存在せしめ、その
トナーで潜像を現像することによって低温低湿環境下に
おいても良質の画像を得るようにした電子写真における
一成分現像方式を提供することにある。[Problems to be Solved by the Invention] An object of the present invention is to solve the above-mentioned problems by making a toner of a specific composition exist in a thin layer on a toner conveying member, and developing a latent image with the toner, thereby reducing the temperature at low temperatures. It is an object of the present invention to provide a one-component developing system for electrophotography that allows high-quality images to be obtained even in a low-humidity environment.
〔課題を解決するための手段１
即ち本発明は、トナー搬送部材、トナー層厚規制部材お
よびトナー補給補助部材を備え、かつ、それらトナー補
給補助部材とトナー搬送部材並びにトナー層厚規制部材
とトナー搬送部材とがそれぞれ当接している現像装置を
用いて薄層化させたｌ・ナーを潜像担持体に供給して潜
像を現像するに際して、着色剤と結着樹脂と、一般式（
Ｉ）（但し、Ｒは炭素数１〜５の炭化水素残基、ｎは１
以上の整数である。）で示されるポリオキシプロピレン
グリコール脂肪酸エステルとを主成分とするトナーを用
いることを特徴とする一成分現像方式である。[Means for Solving the Problems 1] That is, the present invention includes a toner transporting member, a toner layer thickness regulating member, and a toner replenishment auxiliary member, and the toner replenishing auxiliary member, the toner transporting member, the toner layer thickness regulating member, and the toner replenishment auxiliary member. When developing a latent image by supplying a thin layer of l-toner to a latent image carrier using a developing device in which the conveying members are in contact with each other, a coloring agent, a binder resin, and a general formula (
I) (However, R is a hydrocarbon residue having 1 to 5 carbon atoms, n is 1
is an integer greater than or equal to ) This is a one-component development method characterized by using a toner containing polyoxypropylene glycol fatty acid ester as a main component.
ちなみに、本発明者らは前記の目的を達成するために種
々検討した結果、従来のトナーに前記ポリオキシプロピ
レングリコール脂肪酸エステル等を含有させ、望ましく
は更に特別のトナー搬送部材を用いれば良好な複写物が
得らることを確認しており、本発明はこのような知見に
基いて完成されたものである。Incidentally, as a result of various studies to achieve the above object, the inventors of the present invention have found that good copying can be achieved by incorporating the polyoxypropylene glycol fatty acid ester, etc. into a conventional toner, and desirably using a special toner conveying member. It has been confirmed that a product can be obtained, and the present invention was completed based on such knowledge.
本発明において用いられる一成分系現像剤（トナー）は
、前記のとおり少なくとも着色剤と結着樹脂と、前記の
ポリオキシプロピレングリコール脂肪酸エステルとを主
成分としたものである。ここで前記のポリオキシプロピ
レングリコール脂肪酸エステルのトナー中に占める量は
０．１〜ＩＯ重量％、好ましくは０．５〜５重量％であ
り、０．１重量％未満ではトナーの融着防止効果が発揮
できず、逆に１０重量％より多いとトナー製造時の混線
が不十分となって均質なトナーが得られないようになる
。As described above, the one-component developer (toner) used in the present invention contains at least a colorant, a binder resin, and the polyoxypropylene glycol fatty acid ester as main components. Here, the amount of the polyoxypropylene glycol fatty acid ester in the toner is 0.1 to IO% by weight, preferably 0.5 to 5% by weight, and less than 0.1% by weight has an effect of preventing toner adhesion. On the other hand, if the amount is more than 10% by weight, there will be insufficient crosstalk during toner production, making it impossible to obtain a homogeneous toner.
本発明に用いられるポリオキシプロピレングリコール脂
肪酸エステルとしては、前記一般式（Ｉ）で示される化
合物であり、具体的には以下の化合物が挙げらる。The polyoxypropylene glycol fatty acid ester used in the present invention is a compound represented by the above general formula (I), and specific examples include the following compounds.
０９Ｈ５
ＣＨｓ−Ｃ−０ＩＣＬＣＨＯ汁「Ｈ
Ｃ４Ｈｅ−Ｃ−０−（ＣＬＣｆｌＯ）−丁１着色剤およ
び結着樹脂には電子写真トナーで用いられているものが
いずれも使用できる。例えば、着色剤の代表例としては
、銅フタロシアニン、アントラキノン染料、キナクリド
ン、ローダミン系染料、アゾ系染料、インジゴ系染料、
ニグロシン系染料などが挙げられる。また、結着樹脂の
代表例としては、塩素化パラフィン、ポリ塩素化パラフ
ィン、ポリ塩化ビニル、フェノール樹脂、エポキシ樹脂
、ポリエステル、ポリアマイド、ポリアクリル酸樹脂、
ポリスチレン、ポリプロピレン等の重合体およびこれら
の千ツマ−を含む共重合体などが挙げられる。09H5 CHs-C-0ICLCHO Juice "H C4He-C-0-(CLCflO)-1" Any colorant and binder resin used in electrophotographic toners can be used. For example, representative colorants Examples include copper phthalocyanine, anthraquinone dye, quinacridone, rhodamine dye, azo dye, indigo dye,
Examples include nigrosine dyes. Typical examples of binder resins include chlorinated paraffin, polychlorinated paraffin, polyvinyl chloride, phenol resin, epoxy resin, polyester, polyamide, polyacrylic resin,
Examples include polymers such as polystyrene and polypropylene, and copolymers containing 100% of these polymers.
トナーの製造はこれら着色剤、結着樹脂およびポリオキ
シプロピレングリコール脂肪酸エステル等を所定の割合
で加え、ロールミルで溶融混練したのち、ハンマーミル
で粗粉砕し、更にジェットミル微粉砕して粒度５〜２０
μの一成分系磁性トナーとすれば良い。また−成分系磁
性トナーの製造であれば、上記混練物中に更に適当量（
１０〜６０重量％）の磁性体を添加させておけば良い。The toner is manufactured by adding these colorants, binder resin, polyoxypropylene glycol fatty acid ester, etc. in predetermined proportions, melting and kneading them in a roll mill, then coarsely pulverizing them in a hammer mill, and then finely pulverizing them in a jet mill to obtain particles with a particle size of 5 to 5. 20
A one-component magnetic toner of μ may be used. In addition, in the case of manufacturing a -component magnetic toner, an appropriate amount (
10 to 60% by weight) of magnetic material may be added.
次に図面を用いて本発明を説明する。第１図は本発明の
方式の実施に有用な非磁性−成分系トナーを使用した現
像装置の一例の模式的断面図である。第１図に示すよう
に、トナータンク７に内蔵されているトナー６は攪拌羽
根（トナー補給補助部材）５によりスポンジローラー（
トナー補給補助部材）４に強制的に寄せられ、トナーは
スポンジローラー４に供給される。そして、スポンジロ
ーラー４に取り込まれたトナーは、スポンジローラー４
が矢印方向に回転することにより、トナー搬送部材２に
運ばれ、摩擦され、静電的あるいは物理的に吸着し、ト
ナー搬送部材２が矢印方向に強く回転し、スチール性弾
性ブレード（トナー層厚規制部材）３により均一なトナ
ー薄層が形成されるとともに摩擦帯電する。その後、ト
ナー搬送部材２と接触もしくは近接している静電潜像担
持体１の表面に運ばれ潜像が現像される。Next, the present invention will be explained using the drawings. FIG. 1 is a schematic cross-sectional view of an example of a developing device using a non-magnetic component toner useful for carrying out the method of the present invention. As shown in FIG. 1, the toner 6 contained in the toner tank 7 is moved by a sponge roller (
The toner is forcibly brought to the sponge roller 4 (toner replenishment auxiliary member) 4, and the toner is supplied to the sponge roller 4. Then, the toner taken into the sponge roller 4 is transferred to the sponge roller 4.
As it rotates in the direction of the arrow, it is carried to the toner transport member 2, rubbed, and electrostatically or physically adsorbed, and the toner transport member 2 rotates strongly in the direction of the arrow, and the steel elastic blade (toner layer thickness A uniform thin layer of toner is formed by the regulating member) 3 and frictionally charged. Thereafter, the toner is transported to the surface of the electrostatic latent image carrier 1 that is in contact with or in close proximity to the toner transport member 2, and the latent image is developed.
尚、この発明のトナーに適した現像装置は上記のものに
限定されるものではない。Note that developing devices suitable for the toner of the present invention are not limited to those described above.
本発明の一成分現像方式は、しかし、そうした現像装置
で先に説明した特定のトナーを用いて画像形成を行なっ
た場合に特に効果的である。However, the one-component development method of the present invention is particularly effective when an image is formed using the above-described specific toner in such a developing device.
以下、実施例により本発明を具体的に説明する。 Hereinafter, the present invention will be specifically explained with reference to Examples.
去ｍよ
スチレン−２−エチルへキシルアクリレート−ジメチル
アミノエチルメタクリレート共重合体（モノマー組成比
＝８０：１５：５） １００重量部、銅フタロシアニン
顔料４重量部、離型剤としてポリプロピレン６重量部、
下記式（Ｉ Ｉ）の化合物３重量部を混合し、混合物を
熱ロールミルで１２０〜！３０℃で約３０分間加熱溶解
混練し、室温まで冷却した後、スピードミルで粗粉砕す
る。その後、ジェットミルで微粉砕し、ジグザグ分級機
にて分級し１１μｍの粉体を製造し、更に正帯電コロイ
ダルシリカを０８ｗｔ％添加し、ヘンシェルミキサーで
混合しトナーを得た。100 parts by weight of styrene-2-ethylhexyl acrylate-dimethylaminoethyl methacrylate copolymer (monomer composition ratio = 80:15:5), 4 parts by weight of copper phthalocyanine pigment, 6 parts by weight of polypropylene as a mold release agent,
3 parts by weight of the compound of the following formula (II) are mixed, and the mixture is heated on a hot roll mill to 120~! The mixture is melted and kneaded by heating at 30° C. for about 30 minutes, cooled to room temperature, and then coarsely ground using a speed mill. Thereafter, the powder was finely pulverized with a jet mill and classified with a zigzag classifier to produce a powder of 11 μm. Further, 08 wt % of positively charged colloidal silica was added and mixed with a Henschel mixer to obtain a toner.
この］〜ナーを用いて第１図に示した現像装置で低温低
湿下において連続複写を行なったところ、画像は良好で
、特に初期画像と、３０００枚連続複写後の画像との品
質の差は認められず、画像濃度も初期濃度１．３８に対
して１．３６と殆ど差がなく、またトナーの帯電量の変
化も比較的安定しており、トナー搬送部材、トナー層厚
規制部材、トナー補給補助部材等へのトナーの融着も認
められず、トナー搬送部材上に均一なトナーｉｌ′ｊＪ
Ｎを形成していた。When continuous copying was carried out at low temperature and low humidity using the developing device shown in Figure 1 using this]~ner, the images were good, especially the difference in quality between the initial image and the image after 3000 sheets were continuously copied. The image density was 1.36 compared to the initial density of 1.38, and there was almost no difference, and the change in the amount of charge on the toner was relatively stable. No toner adhesion was observed on the replenishment auxiliary member, etc., and the toner was uniformly distributed on the toner conveying member.
It formed an N.
比１引±
実施例１における式（Ｉ りの化合物を含有させていな
い以外は実施例１と同様にしてトナーを製造した。この
トナーを用いて実施例１同様に複写試験を行なったとこ
ろ、初期に良好なトナー薄層を形成し、画像に異常は見
られなかったが、１１１１００孜の連続複写では画像濃
度が低くなり、初期１．３４であったものが、０．８３
と著しく低下し、実用に適さない画像となった。A toner was produced in the same manner as in Example 1 except that the compound of formula (I) in Example 1 was not contained. Using this toner, a copying test was conducted in the same manner as in Example 1. Initially, a good toner thin layer was formed and no abnormality was observed in the image, but the image density became low during continuous copying of 111,100 pages, and the initial density was 1.34, but it became 0.83.
This resulted in an image that was not suitable for practical use.
Ｘ置皿上
ポリスチレン５０重量部、離型剤としてポリプロピレン
５重量部、四三酸化鉄４０重量部、ニグロシン系染料３
重量部、下記式（ＩＩＩ）の化合物２重量部を混合し、
混合物を実施例１と同様の操作により平均粒径１２μｍ
のトナーを得た。X Placement plate 50 parts by weight of polystyrene, 5 parts by weight of polypropylene as a mold release agent, 40 parts by weight of triiron tetroxide, 3 parts by weight of nigrosine dye
parts by weight, and 2 parts by weight of a compound of the following formula (III),
The mixture was treated in the same manner as in Example 1 to obtain an average particle size of 12 μm.
I got the toner.
このトナーを用いて実施例１同様に複写試験を行なった
ところ、初期濃度１．３９に対し、連続３０００枚複写
した後も１．３８の画像濃度を有し、実施例１同様良好
な結果が得られた。When a copying test was conducted using this toner in the same manner as in Example 1, the initial density was 1.39, and even after 3000 copies were made, the image density was 1.38, showing good results as in Example 1. Obtained.
Ｘ胤亘ユ
スチレンアクリル酸共重合体７０重量部、離型剤として
ポリプロピレン５重量部、カーボンブラック２０重量部
、ニグロシン系染料３重量部、下記式（１ｖ）の化合物
２重量部を混合し、混合物を実施例１と同様の操作によ
り平均粒径１１．５μｍのトナーを得た。Mix 70 parts by weight of X-Tane Wataru styrene acrylic acid copolymer, 5 parts by weight of polypropylene as a mold release agent, 20 parts by weight of carbon black, 3 parts by weight of nigrosine dye, and 2 parts by weight of the compound of the following formula (1v), The mixture was subjected to the same operation as in Example 1 to obtain a toner having an average particle size of 11.5 μm.
このトナーを用いて実施例１同様に複写試験を行なった
ところ、初期濃度１．３６に対し、連続３０００枚複写
し、た後も１．３６の画像濃度を有し、実施例１同様良
好な結果が得られた。When a copying test was conducted using this toner in the same manner as in Example 1, the initial density was 1.36, and even after 3000 copies were made, the image density was 1.36, which was good as in Example 1. The results were obtained.
匿較■孟
実施例３における式（ＩＶ）の化合物を含有させていな
い以外は実施例３と同様にしてトナーを製造し、た。こ
のトナーを用いて実施例１同様に複写試験を行なったと
ころ、初期に良好なトナー薄層を形成し、画像に異常は
見られなかったが、１０００枚の連続複写では画像濃度
が低くなり、初期１，３７であったものが、０．８１と
著しく低下し、ベタ黒部のがさついた実用に適さない画
像となった。Comparison ■ A toner was produced in the same manner as in Example 3 except that the compound of formula (IV) in Example 3 was not contained. When a copying test was conducted using this toner in the same manner as in Example 1, a good toner thin layer was initially formed and no abnormality was observed in the image, but after 1000 sheets were continuously copied, the image density became low. The initial value was 1.37, but it dropped significantly to 0.81, resulting in an image that was unsuitable for practical use with solid black areas.
（発明の効果）
以上説明したように、本発明の現像方式によれば、連続
複写後も初期画像と同等の品質のものが得られる。また
本発明の方式は環境による変動が少なく、低温低湿下に
おいても良好な均一トナー薄層を形成することができ、
特に、−成分薄層現像方式で、低温低湿環境下における
現像剤のチャージアップを防止することが可能となった
。(Effects of the Invention) As explained above, according to the developing method of the present invention, an image of the same quality as the initial image can be obtained even after continuous copying. In addition, the method of the present invention has little environmental variation and can form a uniform toner thin layer even under low temperature and low humidity conditions.
In particular, with the -component thin layer development method, it has become possible to prevent developer charge-up in a low-temperature, low-humidity environment.
第１図は本発明の現像方式の実施に好適に用いられる装
置の１例を示す模式図である。
Ｉ・・・静電潜像担持体 ２・・・トナー搬送部材３・
・・弾性ブレード ４・・・スポンジローラー５・・
・攪拌羽根 ６・・・トナー７・・・トナータン
クFIG. 1 is a schematic diagram showing an example of an apparatus suitably used for carrying out the developing method of the present invention. I... Electrostatic latent image carrier 2... Toner transport member 3.
...Elastic blade 4...Sponge roller 5...
・Agitation blade 6...Toner 7...Toner tank
Claims (1)
補助部材を備え、かつ、それらトナー補給補助部材とト
ナー搬送部材並びにトナー層厚規制部材とトナー搬送部
材とがそれぞれ当接している現像装置を用いて薄層化さ
せたトナーを潜像担持体に供給して潜像を現像するに際
して、着色剤と結着樹脂と、一般式（ I ） ▲数式、化学式、表等があります▼（ I ） （但し、Ｒは炭素数１〜５の炭化水素残基、ｎは１以上
の整数である。）で示されるポリオキシプロピレングリ
コール脂肪酸エステルとを主成分とするトナーを用いる
ことを特徴とする一成分現像方式。[Scope of Claims] A toner transporting member, a toner layer thickness regulating member, and a toner replenishment auxiliary member are provided, and the toner replenishing auxiliary member and the toner transporting member are in contact with each other, and the toner layer thickness regulating member and the toner transporting member are in contact with each other. When developing a latent image by supplying a thin layer of toner to a latent image carrier using a developing device, there are colorants, binder resins, and general formulas (I) ▲mathematical formulas, chemical formulas, tables, etc. ▼ (I) (However, R is a hydrocarbon residue having 1 to 5 carbon atoms, and n is an integer of 1 or more.) Using a toner whose main component is polyoxypropylene glycol fatty acid ester Features a one-component development method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1060642A JPH02240662A (en) | 1989-03-15 | 1989-03-15 | One component developing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1060642A JPH02240662A (en) | 1989-03-15 | 1989-03-15 | One component developing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02240662A true JPH02240662A (en) | 1990-09-25 |
Family
ID=13148182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1060642A Pending JPH02240662A (en) | 1989-03-15 | 1989-03-15 | One component developing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02240662A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105592697A (en) * | 2013-10-03 | 2016-05-18 | 陶氏环球技术有限责任公司 | Microbicidal composition comprising phenoxyethanol |
-
1989
- 1989-03-15 JP JP1060642A patent/JPH02240662A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105592697A (en) * | 2013-10-03 | 2016-05-18 | 陶氏环球技术有限责任公司 | Microbicidal composition comprising phenoxyethanol |
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