JPS6286381A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS6286381A JPS6286381A JP22743085A JP22743085A JPS6286381A JP S6286381 A JPS6286381 A JP S6286381A JP 22743085 A JP22743085 A JP 22743085A JP 22743085 A JP22743085 A JP 22743085A JP S6286381 A JPS6286381 A JP S6286381A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- regulating member
- layer thickness
- thickness regulating
- contact part
- 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
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
且1しと野一
本発明は、トナー層厚規制部材によって層厚を規制され
たトナー担持体上のトナーによって、潜像担持体に形成
された潜像を可視像化する現像装置に関する。DETAILED DESCRIPTION OF THE INVENTION [1] Hajime Shitono The present invention provides a method for making visible a latent image formed on a latent image carrier by toner on a toner carrier whose layer thickness is regulated by a toner layer thickness regulating member. The present invention relates to a developing device for imaging.
従−末技術
電子複写機、プリンタ、ファクシミリ等の作像装置に採
用されるに記形式の現像装置は従来より周知である。BACKGROUND OF THE INVENTION 2. Description of the Related Art Development devices of the type described below, which are employed in image forming apparatuses such as electronic copying machines, printers, and facsimile machines, are well known.
トナー粒子のみ、あるいはこれに補助成分を含有するト
ナー(すなわち−成分系現像剤)を用いる現像方式とし
ては、導電性磁性トナーを使用し、潜像の電荷によって
トナー粒子に電荷を誘導せしめ、これによりトナーを潜
像に付着させる誘導現像法、絶縁性磁性または非磁性ト
ナーの一方または両者を使用し、このトナーを摩擦帯電
させて潜像を可視像化する摩擦帯電方式等が従来より公
知であるが、いずれの方式においてもトナーがトナー層
厚規制部材によって薄層化され、このトナー層がトナー
担持体に担持されつつ現像領域へ運ばれ現像に供せられ
る。Development methods that use toner particles alone or toners containing auxiliary components (i.e., -component developers) use conductive magnetic toner, and the charge of the latent image induces charge in the toner particles. Conventionally, the induction development method, in which toner is attached to the latent image using insulating magnetic or non-magnetic toner, and the triboelectric charging method, in which the toner is tribo-electrified to visualize the latent image, are used. However, in either method, the toner layer is made into a thin layer by a toner layer thickness regulating member, and this toner layer is carried to a developing area while being carried on a toner carrier and subjected to development.
ところが−1−述の如き現像方式を採用した現像装置を
長時間使用すると、トナー層厚JJI制部(1にトナー
が融着しこれが固nする結果、トナー担持体上に安定し
たトナーの薄層を形成できなくなり、トナーの固着した
部分を通過した1ヘナーの11が不足し、可視像に自ず
しゃ地汚れを発生させる恐れがある。However, if a developing device employing the developing method described in -1- is used for a long time, the toner will fuse to the toner layer thickness control section (1) and harden, resulting in a stable thin layer of toner on the toner carrier. It becomes impossible to form a layer, and there is a risk that 11 of 1 hener that has passed through the part where the toner is fixed is insufficient, and that background smearing occurs on the visible image.
このため1−ナーの固着を防11−する構成が従来より
各種提案さ扛、かつ実用化されている。たとえばトナー
担持体に対するトナー層厚規制部(■の抑圧力を低減す
る構成、あるいは規制部))の形状を工夫する構成、ま
たはトナー層厚規制部材の表面をトナーの融着し姉い低
表面エネルギー物1frで被覆する構成等が代表的なも
のである。For this reason, various structures for preventing the fixation of the 1-ner have been proposed and put into practical use. For example, a structure that devises the shape of the toner layer thickness regulating part (a structure that reduces the suppressing force of ■, or a regulating part) with respect to the toner carrier, or a structure in which the surface of the toner layer thickness regulating member is fused to a lower surface of the toner layer. A typical example is a structure in which the energy substance is coated with 1fr.
しかしながら1ヘナ一層厚規制部材の抑圧力を減らした
り、その形状を工夫する方法ではトナーの固着を大幅に
改善することけできない。またi〜す・一層厚規制部材
表面杏低表面エネルギー物質で被覆する方法は、1−ナ
ーの融着を効果的に防11.できるが、トナー担持体に
接触する部分の低表面エネルギー物質が経時的に削ら汎
るため、トナー担持体に対するトナー層厚規制部材の押
圧力が変化し、これによって1〜ナ一担持体1−の1〜
ナ一層の厚みが徐々に変化してしまい、厚みの安定した
トナー層を長期間紹持することが困難であった。However, it is not possible to significantly improve toner adhesion by reducing the suppressing force of the thickness regulating member or by devising its shape. In addition, a method of coating the surface of the thickness regulating member with a low surface energy substance effectively prevents the fusion of 1-ner.11. However, as the low surface energy material in the portion that contacts the toner carrier is abraded and spread over time, the pressing force of the toner layer thickness regulating member against the toner carrier changes, and as a result, 1~
The thickness of each layer changes gradually, making it difficult to maintain a toner layer with a stable thickness for a long period of time.
目的
本発明の目的は、トナー層厚規制部材へのトナーの固着
を防止できるとともに、1−ナー担持体に対する1〜ナ
一層厚規制部材の抑圧力の経時的な変化を従来よりも低
減できる冒頭に記載した形式の現像装着を提供すること
である。Purpose An object of the present invention is to prevent toner from sticking to the toner layer thickness regulating member, and to reduce changes over time in the suppressing force of the 1 to 1 layer thickness regulating member against the 1 toner carrier compared to conventional methods. It is an object of the present invention to provide a developer mounting of the type described in .
構成
本発明は上記目的を達成するため、トナー担持体に1−
ナーを介して接触したトナー層厚規制部材部分以外の規
制部材部分、すなわちその非接触部に、低表面エネルギ
ー物質を被覆した構成を提案する。Structure In order to achieve the above object, the present invention includes a toner carrier having 1-
We propose a configuration in which a portion of the regulating member other than the toner layer thickness regulating member portion that is in contact with the toner layer through the toner, that is, a non-contact portion thereof, is coated with a low surface energy material.
以下、本発明の実施例を図面に従って説明する。Embodiments of the present invention will be described below with reference to the drawings.
第1図は本発明に係る現像装置1を有する電子複写機の
一部を示し、そのタンク2にはトナー(−成分系現像剤
)3が収容されている。このト〜3−
ナー3は磁性1ヘナーであ−っても非磁性1ヘナーであ
−〕てもよいが、第1図の例では磁性1−ナーであると
する。FIG. 1 shows a part of an electronic copying machine having a developing device 1 according to the present invention, a tank 2 of which contains toner (-component developer) 3. As shown in FIG. The toner 3 may be either magnetic 1-hener or non-magnetic 1-hener, but in the example shown in FIG. 1, it is assumed that it is magnetic 1-hener.
また本例ではトナー担持体が反時H1方向に駆動される
円筒状の現像ローラ4とし、で構成され、その内部にS
極とN極が周方向に交互に着磁されたマグネット5が不
動に配置さオしている。1−ナー3はマグネット5の磁
力で現像ローラ4の表面に引かれ、該ローラ4の回転に
よりローラ4の表面に担持されながらその回転方向に搬
送される。その際現像ローラ4にはトナー層厚規制部材
6(第2図も参照)の先端部領1或が1ヘナーを介して
接触しており、トナーがこの規制部材6を通過すること
によりその層厚が規制される。トナー層厚規制部材通過
後のトナーは薄いトナー層3 aをなして現像ローラ4
に担持されながら搬送され、時計方向に回転駆動される
1へラム状の感)16体7として構成された潜像担持体
と現像ローラ4との対向領域、すなわち現像領域Y)へ
運ばれる。ここでトナーは感光体7に形成された静電潜
像に静電的に移行し、潜像力録丁視像化される。感光体
に移行せずに現像領域りを通過したトナーは再びタンク
2の側に戻される。Further, in this example, the toner carrier is a cylindrical developing roller 4 driven in the counterclockwise H1 direction.
A magnet 5 in which poles and north poles are alternately magnetized in the circumferential direction is immovably arranged. The 1-ner 3 is attracted to the surface of the developing roller 4 by the magnetic force of the magnet 5, and is conveyed in the direction of rotation while being supported on the surface of the roller 4 as the roller 4 rotates. At this time, the tip region 1 of a toner layer thickness regulating member 6 (see also FIG. 2) is in contact with the developing roller 4 through a thickness of the toner layer. Thickness is regulated. After passing through the toner layer thickness regulating member, the toner forms a thin toner layer 3a and is transferred to the developing roller 4.
The developing roller 4 is conveyed while being supported by the latent image bearing member 7, which is configured as a 16-ram-shaped member 7 rotated in a clockwise direction, that is, the developing area Y). Here, the toner electrostatically transfers to the electrostatic latent image formed on the photoreceptor 7, and the latent image becomes a visible image. The toner that has passed through the development area without being transferred to the photoreceptor is returned to the tank 2 side again.
トナーとして導電性トナー(低抵抗トナー)を用いたと
きは、トナーが感光体7に対向したとき、その潜像の電
荷によりトナーに逆極性の電荷が誘起され、これにより
トナーが潜像に付着し、また絶縁性トナー(高抵抗トナ
ー)を用いたときは、このトナーとトナー層厚規制部材
6ないしは現像ローラ4との摩擦によってトナーが所定
の極性に帯電される。その際トナー層厚規制部材6によ
ってトナーが薄層化されるため、その全体が均一に帯電
される。現像ローラ4を不動に固定し、マグネット5を
時Mi力方向回転駆動し、あるいは両者を共に回転駆動
することによって1−ナーを搬送してもJ:いし、非磁
性トナーを用いたときはマグネット5を省帖できること
も周知の通りである。When a conductive toner (low resistance toner) is used as the toner, when the toner faces the photoreceptor 7, the charges of the latent image induce charges of opposite polarity in the toner, and this causes the toner to adhere to the latent image. However, when an insulating toner (high resistance toner) is used, the toner is charged to a predetermined polarity by friction between the toner and the toner layer thickness regulating member 6 or the developing roller 4. At this time, since the toner is made into a thin layer by the toner layer thickness regulating member 6, the entire toner is uniformly charged. It is also possible to transport the 1-toner by fixing the developing roller 4 immovably and driving the magnet 5 to rotate in the direction of the force, or by driving both to rotate.Also, when non-magnetic toner is used, the magnet It is also well known that you can save 5.
現像動作は−1−述の如く行われるが、この動作が長時
間行われると、特別な処理を施していない従来のトナー
層厚規制部材には経時的にトナーが融着して固着し、こ
れにより可視像の画質か劣化する恐れのあることは先に
説明した通りである。1ヘナ一層厚tl’M制部ト11
−にトナーが融着するのは、Ijl像ローラ、1ヘナ一
層厚規制部+1およびトナーの一士者間に生ずる摩擦熱
によって1へ→−一層ll/規制部材の温度が−1−昇
することが1:、な原因と考え!7.れているが、本発
明−hがトナーの融着状態について詳細に検討したとこ
ろ、)ヘナーを介して現像「」−ラに接触しているトナ
ー層厚規制部(4部分(’+a(第1図)にはむしろ1
−ナーの融着けJ、Hらず、この接触部6a以外の非I
K触部、より詳【7くは接触部〔;、Iの近傍の周囲部
に1ヘナーの融着が発生していることが判った。これは
、接触部6 aの近傍の−Jl接触部の温度は接触部6
aどほとんど同じであるが、非接触部に存するトナーは
その動きが遅いか、または停止しているため融着が加速
さオしるのに対し。The developing operation is carried out as described in -1-, but if this operation is carried out for a long time, the toner will fuse and adhere to the conventional toner layer thickness regulating member that has not been specially treated over time. As described above, this may deteriorate the quality of the visible image. 1 henna thicker tl'M part 11
The reason why the toner fuses to - is due to the frictional heat generated between the Ijl image roller, 1 henna thicker regulating part +1 and the toner, and the temperature of the regulating member increases by -1. Thing 1: What are the causes and thoughts? 7. However, when the present invention-h examined the toner fusion state in detail, it was found that the toner layer thickness regulating portion (4 portions ('+a 1) rather than 1
- There is no fusion J, H of the
It was found that fusion of 1 hener occurred in the K contact area, more specifically in the contact area [;, and in the surrounding area near I. This means that the temperature of the -Jl contact part near the contact part 6a is the same as that of the contact part 6a.
A and A are almost the same, but the toner existing in the non-contact area moves slowly or stops, so the fusion is accelerated.
接触部6aではトナーの動きが激しく、むしろ1ヘナー
が融着し難くい状態にあるためと考えられる。This is thought to be due to the fact that the toner moves rapidly in the contact portion 6a, making it difficult for 1 hener to fuse.
本発明は−1−述した新規な認識に基き構成されでおり
、図示した実施例でけトナーを介して現像ローラ4に接
触した1ヘナ一層厚規制部材の接触部6a以外の非接触
部61)(第2図)に、トナーの融着し難い低表面エネ
ルギー物質が被覆されている。The present invention is constructed based on the novel recognition described in -1-, and in the illustrated embodiment, the non-contact portion 61 other than the contact portion 6a of the 1 henna thicker thickness regulating member that contacts the developing roller 4 through the toner. ) (FIG. 2) is coated with a low surface energy material to which toner is difficult to fuse.
すなわち、トナーの固着が発生しやすい非接触部〔(1
)、特に接触部6a近傍の非接触部にトナーの融着を叩
上できる物質を被覆し、元々1−ナーの固着が生じ難い
接触部6aにはこの物質製被覆しない。このようにすれ
ば非接触部6bへの1−ナーの融着を防11−できるだ
けでなく、接触部6aに一]二記物質が被覆されていな
いため、その削れを防止でき、現像装置を長時間使用し
ても現像ローラ4に対する層厚規制部材の押圧力の変化
を防止でき、よって常に安定した厚みのトナー層3aを
維持でき、現像後の可視像にすしを生ぜしぬたり、地汚
れが発生する欠点を抑制でき、安定した濃度の可視像を
得ることが可能となる。In other words, the non-contact area [(1
), in particular, the non-contact areas near the contact area 6a are coated with a substance that can knock up the fusion of toner, and the contact area 6a, where 1-ner adhesion is originally difficult to occur, is not coated with this material. By doing this, it is possible not only to prevent the 1-ner from being fused to the non-contact portion 6b, but also to prevent the contact portion 6a from being scratched since it is not coated with the substances listed in 1) and 2), thereby preventing the development device from being damaged. It is possible to prevent changes in the pressing force of the layer thickness regulating member against the developing roller 4 even when used for a long time, so that the toner layer 3a with a stable thickness can be maintained at all times, and no smudges are produced in the visible image after development. It is possible to suppress defects such as background smearing, and to obtain visible images with stable density.
1ヘナ一層厚規制j′f1;材6の先端を第1図の状態
よりも延長し、先端部が現像ローラ4に接触しないよう
にし、規制部材6の腹部がl・ナーを介して現像ローラ
4に接触するようにしたときも、この腹−7=
部の接触部には低表面エネルギー物質を披I’l!ぜす
、その他の非接触部、特に接触部近傍の部分にこの物質
を被覆すればよい。1 henna thicker regulation j'f1; The tip of the material 6 is extended beyond the state shown in FIG. 4, we also applied a low surface energy material to the contact area at the antinode 7. All other non-contact parts, especially the parts near the contact parts, may be coated with this substance.
低表面エネルギー物質としでは、シリコーン樹脂、ある
いはフルオロポリマー等を有利に用いることができる。As the low surface energy substance, silicone resin, fluoropolymer, etc. can be advantageously used.
またシリコーン樹脂としては、たとえば焼付型、常温硬
化型のスレートシリコーン等を適宜使用できるが、常温
硬化型のシリ:1−ン樹脂であっても強制的に200〜
300’([度で焼成して使用すると、その硬度を高め
ることができ、トナーとの摩擦による摩耗を抑制できる
。市販品としては、信越化学製のK R27+、K R
255、KR152や、東しシリコーン製(7) S
R2400、S H840、SR2/106等を有利に
用いることができる。Further, as the silicone resin, for example, baking type or room temperature curing type slate silicone can be used as appropriate, but even if it is a room temperature curing type silicone resin, it is forced to
When used after firing at 300' (degrees), its hardness can be increased and wear caused by friction with toner can be suppressed. Commercially available products include Shin-Etsu Chemical's K R27+ and K R
255, KR152, and Toshi silicone (7) S
R2400, SH840, SR2/106, etc. can be advantageously used.
次に、より具体的な実験例を1卜げて説明する。Next, a more specific experimental example will be explained.
実験例−!−
トナー層厚規制部材6の基材どしてステンjノス鋼の板
を用い、規制部材6を第1図のようにセットしたときに
現像ローラ4に接触しない部分、ずなわち第2図に示し
た非接触部6bにのみ、次に示すシリコーン樹脂を塗布
した(接触部6aには塗布しない)。Experimental example-! - A stainless steel plate is used as the base material of the toner layer thickness regulating member 6, and the portion that does not come into contact with the developing roller 4 when the regulating member 6 is set as shown in Fig. 1, that is, Fig. 2 The following silicone resin was applied only to the non-contact area 6b shown in (not applied to the contact area 6a).
シリコーン樹脂
(東1ノシリコーン製5R2400) 100重
量部トルエン 700重量部次い
でこれを250℃で1時間加熱してシリコーン膜の焼成
を行い、トナー層厚規制部材6を得た。Silicone resin (5R2400, manufactured by Higashi Ichino Silicone Co., Ltd.) 100 parts by weight Toluene 700 parts by weight This was then heated at 250° C. for 1 hour to bake a silicone film to obtain a toner layer thickness regulating member 6.
焼成の終ったトナー層厚規制部材を第1図に示した現像
装置にセットし、この電子複写機により次に示す1〜ナ
一粒子のトナーを用いて、先に説明した態様で連続コピ
ーテストを行った。The toner layer thickness regulating member that has been fired is set in the developing device shown in Fig. 1, and the electronic copying machine performs a continuous copy test in the manner described above using the following 1 to 1 particle toner. I did it.
スチレン樹脂 100重量部マグネタ
イ1へ(0,1μ)60重量部ニグロシンベースEX
(オリエント化学展) 2重量部その結果
、2万枚コピー後もその画像に白すしや、地汚れは発生
せず、画像濃度の変動もほとんどなく、実験後トナー層
厚規制部材を取り外して観察してみたが、トナーの固着
は全く見られず、シリコーン樹脂の非塗布部、すなオ)
ち第2図に示した接触部6aの削れもほとんどなかった
。Styrene resin 100 parts by weight To magnetite 1 (0.1μ) 60 parts by weight Nigrosine base EX (Orient Chemical Exhibition) 2 parts by weight As a result, even after copying 20,000 copies, there was no white smudge or background stain on the image. There was almost no change in image density, and after the experiment, I removed the toner layer thickness regulating member and observed it, but there was no toner sticking at all.
In addition, there was almost no scraping of the contact portion 6a shown in FIG.
実J!1ffl12
第3図に示すように非接触部Fi bのうち、接触部6
aの近傍部分6Cだけに下δ11処理のシリコーン樹脂
溶液を塗布し、これを200℃で1時間焼成して1〜ナ
一層厚規制部材6を1)だ。Real J! 1ffl12 As shown in FIG. 3, among the non-contact parts Fi b, the contact part 6
A silicone resin solution treated with lower δ11 is applied only to the portion 6C near a, and this is baked at 200° C. for 1 hour to form the thickness regulating member 6 from 1 to 1).
シリコーン樹脂(信越化学KR27]) 100重敗
部トルエン 700重鼠部炭化ケ
イ素 5重社部この規制部材6を
第1回に示す電−r複写機の現像装置にセットし、実験
例1と同じ1−ナーを用い、て2万枚の連続コピーテス
トを行−ノだ。その結果、2万枚コピー後もその画像に
白ずじや地汚れが発生せず、画像濃度は初期と同じであ
った。実験後トナー層厚規制部材を観察したがトナーの
固着、削れは共に認められなかった。Silicone resin (Shin-Etsu Chemical KR27]) 100 heavy parts Toluene 700 heavy parts Silicon carbide 5 heavy parts This regulating member 6 was set in the developing device of the electric copying machine shown in Part 1, and the same as in Experimental Example 1. We conducted a continuous copy test of 20,000 sheets using a 1-ner. As a result, even after copying 20,000 copies, no white streaks or background stains occurred in the images, and the image density remained the same as at the initial stage. After the experiment, the toner layer thickness regulating member was observed, and neither toner sticking nor scraping was observed.
几11粍験−例±
ステンレス鋼製のトナー層厚規制部材の部材に対し、そ
の全面(接触部と非接触部)に実験例1と同じシリコー
ン樹脂を塗布し250℃で1時間加熱し、シリコーン膜
の焼成を行った。このようにして得たトナー層厚規制部
材を第1図のようにセットして連続コピーテストを行っ
たところ、約1万枚のコピー後から画像濃度が1m昇し
、地汚れが発生した。+ 5000枚のコピー後、トナ
ー層厚規制部材を取り外して[察したところ、トナーの
固着は発生していなかったが、第4図に示すように現像
ローラに接触していたトナー層厚規制部材部分6aが削
られてシリコーン樹脂の塗布層が薄くなっていた。この
削れにより現像ローラに対するトナー層厚規制部材の押
圧力が変化し、画質劣化の原因となったものと考えられ
る。几11 Experiment - Example ± The same silicone resin as in Experimental Example 1 was applied to the entire surface (contact and non-contact areas) of a stainless steel toner layer thickness regulating member, and heated at 250°C for 1 hour. The silicone film was fired. When the thus obtained toner layer thickness regulating member was set as shown in FIG. 1 and a continuous copying test was conducted, the image density increased by 1 m after copying approximately 10,000 sheets, and background smear occurred. + After copying 5,000 sheets, the toner layer thickness regulating member was removed and [as it turned out, no toner sticking occurred, but as shown in Figure 4, the toner layer thickness regulating member was in contact with the developing roller. The portion 6a was scraped and the silicone resin coating layer became thin. It is thought that this scraping changed the pressing force of the toner layer thickness regulating member against the developing roller, causing image quality deterioration.
−実−験例−支
実験例1と同じくトナー層厚規制部材6の基材としてス
テンレス鋼の板を用い、規制部材6を第1図のようにセ
ラ1〜したとき現像ローラに接触しない第2図に示す非
接触部6bに、ポリテトラフルオロエチレンのエナメル
(Dupont社製852−201クリアーテフロンエ
ナメル、固形分48重量バーセント)を塗布し、次いで
これを350°Cの温度で30分間焼成して1ヘナ一層
厚規制部材6を得た。- Experimental Example - Similar to Experimental Example 1, a stainless steel plate was used as the base material of the toner layer thickness regulating member 6, and when the regulating member 6 was moved from 1 to 1 as shown in FIG. Polytetrafluoroethylene enamel (Dupont 852-201 Clear Teflon Enamel, solid content 48% by weight) was applied to the non-contact area 6b shown in Figure 2, and then baked at a temperature of 350°C for 30 minutes. Thus, a henna thickness regulating member 6 was obtained.
これを第1図に示した電子複写機の現像装置にセットし
て、実験例1と同じ1ヘナーを用いて連続コピーテスト
を実施した。その結果、実験例1と同様に2万枚のコピ
ー後もその画像に白すし、地汚れは発生せず、画像濃度
の変化もなかった。実験後トナー層厚規制部材6を取り
外して観察したが、この場合もl−ナーの固着は見られ
ず、非塗布部(接触部6a)の削れもほとんど詔めI″
−)れなかった。This was set in the developing device of the electronic copying machine shown in FIG. 1, and a continuous copy test was carried out using the same 1 hener as in Experimental Example 1. As a result, as in Experimental Example 1, even after copying 20,000 sheets, there was no white smudge, no background smudge, and no change in image density. After the experiment, the toner layer thickness regulating member 6 was removed and observed, but in this case as well, no adhesion of l-toner was observed, and there was almost no scraping of the non-applied area (contact area 6a).
−) It was not possible.
実−験−例ノL
トナー層厚規制部材の基材に対し、第3図に示した非接
触部6bのうち、現像ローラに接触する接触部6aの近
傍の部分6Cだけに、ポリテトラフルオロエチレン混合
液(固形分30パーセンl−)に対して疎水性シリカ0
.1重量部を混合したコート液を塗布し、400℃で7
30分間焼成して1〜ナ一層厚規制部材6を得た。これ
を第1図のようにセットして実験例1と同じトナーによ
って2万枚の連続コピーを行った結果、2万枚コピー後
も白すし、地汚れは発生せず、画像濃度は初期と同じで
あった。実験後I−ナ一層厚規制部材を観察したがトナ
ーの固着、削れはなかった。Experimental Example No. L Polytetrafluorocarbon was applied to the base material of the toner layer thickness regulating member only in a portion 6C of the non-contact portion 6b shown in FIG. 3 near the contact portion 6a that contacts the developing roller. 0 hydrophobic silica in ethylene mixture (solid content 30% l-)
.. A coating solution containing 1 part by weight was applied and heated at 400℃ for 7
After baking for 30 minutes, 1 to 4 thick regulating members 6 were obtained. When this was set up as shown in Figure 1 and 20,000 copies were made continuously using the same toner as in Experimental Example 1, the result was that even after copying 20,000 copies, there was no background smudge, and the image density was the same as the initial one. It was the same. After the experiment, the I-na layer thickness regulating member was observed, and there was no toner sticking or scraping.
1敷較夫験−例メ−
ステンレス鋼の基材に全面に実験例3で用いたものと同
じポリテトラフルオロエチレンのエナメルを塗布し、3
50℃で30分間焼成して得たトナー層厚規制部材を第
1図のようにセットし、実験例1と同じ!・ナーを用い
て連続コピーテストを行った。その結果、約1万枚のコ
ピー後から画像濃度が上昇し、地汚れが発生した。15
000枚のコピー後、1ヘナ一層厚規制部材を取り外し
て観察したところ、1−ナーの固着はなかったが、この
場合も第4図に示す如く現像ローラとの接触部6aが削
られて塗布層が薄くなっていた。1-bed comparison experiment - Example - Apply polytetrafluoroethylene enamel, the same as that used in Experimental Example 3, to the entire surface of a stainless steel base material.
The toner layer thickness regulating member obtained by baking at 50°C for 30 minutes was set as shown in Figure 1, the same as in Experimental Example 1!・Continuous copy test was conducted using Gner. As a result, after approximately 10,000 copies were made, the image density increased and background smear occurred. 15
After copying 1,000 sheets, the 1-henner thickness regulating member was removed and observed, and there was no adhesion of the 1-henner. However, as shown in Fig. 4, the contact area 6a with the developing roller was scraped and the coating was poor. The layers were thin.
本発明は1ヘナ一担持体が現像スリーブではなくベルト
から成るときも適用でき、また潜像担持体がドラム状の
感光体ではなくベルト状の感光体、誘電体ドラム、ある
いは誘電体ベルトから成るときも同様であり、電子複写
機以外の各種作像装置における現像装置にも適用できろ
。The present invention can also be applied when the henna carrier is composed of a belt instead of a developing sleeve, and the latent image carrier is composed of a belt-shaped photoreceptor, a dielectric drum, or a dielectric belt instead of a drum-shaped photoreceptor. The same can be said of the present invention, and it can also be applied to developing devices in various image forming apparatuses other than electronic copying machines.
またトナー担持体に対するI・ナ一層厚規制部材の非接
触部6b全体に低表面エネルギー物質を被覆しなくとも
、従来1−ナーが固着しやすかった部分、すなわち接触
部6dの近傍を被覆するた(Jであってもよいことは第
3図の例からも明らかである。トナー層厚規制部材の基
材としてはステンレス鋼に限らず、他の金属、または合
成樹脂等を適宜用いることができることも当然である。In addition, without coating the entire non-contact portion 6b of the I/N layer thickness regulating member with respect to the toner carrier, the low surface energy material can be coated on the portion where the 1-toner was conventionally likely to adhere, that is, the vicinity of the contact portion 6d. (It is clear from the example in FIG. 3 that J may also be used.The base material of the toner layer thickness regulating member is not limited to stainless steel, but other metals, synthetic resins, etc. can be used as appropriate. Of course.
勺(
本発明によれば、1ヘナ一層厚規制部材への1ヘナーの
固着を防止でき、しかもその接触部の削れを抑制できる
ので1−ナー担持体に対する1ヘナ一層厚規制部材の接
触状態の変化髪低減でき、現像された画像にすしや地汚
れが発生することを抑制し、安定した画像濃度を維持す
ることが11能とな−〕だ。(According to the present invention, it is possible to prevent the adhesion of the 1-hener to the 1-hener thicker regulating member, and also to suppress the abrasion of the contact portion, so that the contact state of the 1-hener thicker regulating member to the 1-ner carrier can be prevented. It has the ability to reduce hair loss, suppress the occurrence of smudges and background stains on developed images, and maintain stable image density.
第1図は、本発明に係る現像装置を有する電子複写機の
一部を示す断面図、第2図および第3図はトナー層厚規
制部材をそれぞれ示す斜視図、第4図は削れが発生した
トナー層厚規制部材を示す斜視図である。
1・現像装置
3・・・トナー
6・・・トナー層厚規制部材
第2図FIG. 1 is a sectional view showing a part of an electronic copying machine having a developing device according to the present invention, FIGS. 2 and 3 are perspective views showing a toner layer thickness regulating member, and FIG. 4 is a diagram showing scratches. FIG. 3 is a perspective view showing a toner layer thickness regulating member. 1.Developing device 3...Toner 6...Toner layer thickness regulating member Fig. 2
Claims (3)
ナー担持体上のトナーによって、潜像担持体に形成され
た潜像を可視像化する現像装置において、 トナー担持体にトナーを介して接触するトナー層厚規制
部材部分以外の層厚規制部材部分に、低表面エネルギー
物質を被覆したことを特徴とする前記現像装置。(1) In a developing device that visualizes a latent image formed on a latent image carrier by toner on a toner carrier whose layer thickness is regulated by a toner layer thickness regulating member, the toner is passed through the toner carrier. The developing device as described above, wherein a portion of the layer thickness regulating member other than a portion of the toner layer thickness regulating member that comes into contact with the toner layer is coated with a low surface energy substance.
る特許請求の範囲第1項に記載の現像装置。(2) The developing device according to claim 1, wherein the low surface energy substance is a silicone resin.
ある特許請求の範囲第1項に記載の現像装置。(3) The developing device according to claim 1, wherein the low surface energy substance is a fluoropolymer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22743085A JPH0661013B2 (en) | 1985-10-12 | 1985-10-12 | Development device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22743085A JPH0661013B2 (en) | 1985-10-12 | 1985-10-12 | Development device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6286381A true JPS6286381A (en) | 1987-04-20 |
JPH0661013B2 JPH0661013B2 (en) | 1994-08-10 |
Family
ID=16860728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22743085A Expired - Fee Related JPH0661013B2 (en) | 1985-10-12 | 1985-10-12 | Development device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0661013B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63199261U (en) * | 1987-06-05 | 1988-12-22 | ||
US5060021A (en) * | 1989-12-26 | 1991-10-22 | Minolta Camera Kabushiki Kaisha | Monocomponent developing device |
US7546071B2 (en) | 2006-03-03 | 2009-06-09 | Sharp Kabushiki Kaisha | Developing device for prevention of coagulate toner adherence and image forming apparatus using the developing device |
-
1985
- 1985-10-12 JP JP22743085A patent/JPH0661013B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63199261U (en) * | 1987-06-05 | 1988-12-22 | ||
JPH0546030Y2 (en) * | 1987-06-05 | 1993-12-01 | ||
US5060021A (en) * | 1989-12-26 | 1991-10-22 | Minolta Camera Kabushiki Kaisha | Monocomponent developing device |
US7546071B2 (en) | 2006-03-03 | 2009-06-09 | Sharp Kabushiki Kaisha | Developing device for prevention of coagulate toner adherence and image forming apparatus using the developing device |
Also Published As
Publication number | Publication date |
---|---|
JPH0661013B2 (en) | 1994-08-10 |
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