JPH048792B2 - - Google Patents
Info
- Publication number
- JPH048792B2 JPH048792B2 JP59153437A JP15343784A JPH048792B2 JP H048792 B2 JPH048792 B2 JP H048792B2 JP 59153437 A JP59153437 A JP 59153437A JP 15343784 A JP15343784 A JP 15343784A JP H048792 B2 JPH048792 B2 JP H048792B2
- Authority
- JP
- Japan
- Prior art keywords
- developer
- carrier
- latent image
- magnetic
- image
- 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.)
- Expired - Lifetime
Links
- 230000003746 surface roughness Effects 0.000 claims description 7
- 239000007787 solid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229920005792 styrene-acrylic resin Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
- G03G15/0818—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the structure of the donor member, e.g. surface properties
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/06—Developing structures, details
- G03G2215/0602—Developer
- G03G2215/0604—Developer solid type
- G03G2215/0614—Developer solid type one-component
- G03G2215/0619—Developer solid type one-component non-contact (flying development)
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/06—Developing structures, details
- G03G2215/0634—Developing device
- G03G2215/0636—Specific type of dry developer device
- G03G2215/0641—Without separate supplying member (i.e. with developing housing sliding on donor member)
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、電子写真複写機の分野に関し、詳述
すれば、非磁性一成分現像剤を用いる現像装置の
改良に関する。DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to the field of electrophotographic copying machines, and more particularly to improvements in developing devices using non-magnetic one-component developers.
従来の技術とその問題点
電子写真複写機において非磁性一成分現像剤を
用いて潜像の現像を行なうには、一般に、現像剤
は、回転しながら圧接している現像剤供給部材と
現像剤担持体との間で摺擦されて所定の電荷が付
与されながら、逐次、現像剤供給部材から現像剤
担持体に供給される。そして、現像剤担持体に供
給された現像剤は適当な像形成部材によつて薄い
層状に形成されながら、該像形成部材に隣接して
回転している静電潜像保持体に静電気力により吸
着されて該潜像を可視下する。Conventional technology and its problems When developing a latent image using a non-magnetic one-component developer in an electrophotographic copying machine, the developer is generally placed between a developer supply member and a developer supplying member that are in pressure contact with each other while rotating. The developer is sequentially supplied from the developer supply member to the developer carrier while being rubbed with the carrier and given a predetermined electric charge. The developer supplied to the developer carrier is formed into a thin layer by an appropriate image forming member, and is applied to an electrostatic latent image carrier rotating adjacent to the image forming member by electrostatic force. The latent image is made visible by adsorption.
このような電子写真複写機における従来の非磁
性一成分現像装置は、広面積のベタ黒部を現像し
た場合、保持体上の画像の濃度（具体的には、現
像剤担持体の周長以上の部所に相当する画像の濃
度）が薄くなるという問題があつた。 Conventional non-magnetic one-component developing devices in such electrophotographic copying machines, when developing a solid black area over a wide area, develop the density of the image on the carrier (specifically, the density of the image on the carrier (specifically, the There was a problem that the density of the image corresponding to the part became thinner.
そこで、本発明は、このような問題を解決して
広面積のベタ黒部を現像した場合においても濃度
の均一な良好な可視像を与えることができる非磁
性一成分現像装置を提供することを目的とするも
のである。 SUMMARY OF THE INVENTION Therefore, the present invention aims to provide a non-magnetic one-component developing device that can solve these problems and provide a good visible image with uniform density even when developing a solid black area over a wide area. This is the purpose.
問題点を解決するための手段とその作用
本発明は、前述したような非磁性一成分現像装
置において画像の濃度を支配する因子について検
討を重ねた結果、現像剤供給部材の表面を特定の
値以上に粗くすることによつて上述の問題が解決
されることを見出した。かくして、本発明に従え
ば、回転しながら圧接している現像剤供給部材と
現像剤担持体とを備え、更に、前記現像剤担持体
に隣接して回転する静電潜像保持体を備え、非磁
性一成分現像剤が、前記現像剤供給部材と現像剤
担持体との間で摺擦されて所定の電荷が付与され
ながら現像剤供給部材から現像剤担持体に供給さ
れ、更に前記静電潜像保持体に送られ該潜像を可
視像に現像する非磁性一成分現像装置であつて、
前記現像剤供給部材の表面粗さ（中心線平均表面
粗さ）が5μｍ以上になつていることを特徴とす
る現像装置が提供される。Means for Solving the Problems and Their Effects As a result of repeated studies on the factors that govern the image density in the non-magnetic one-component developing device as described above, the present invention has been developed by adjusting the surface of the developer supplying member to a specific value. It has been found that the above-mentioned problem can be solved by making the grain rougher. Thus, according to the present invention, there is provided a developer supply member and a developer carrier that are in pressure contact with each other while rotating, and further includes an electrostatic latent image holder that rotates adjacent to the developer carrier, A non-magnetic one-component developer is rubbed between the developer supply member and the developer carrier, is supplied from the developer supply member to the developer carrier while being given a predetermined charge, and is further charged with the electrostatic charge. A non-magnetic one-component developing device that is sent to a latent image holder and develops the latent image into a visible image,
There is provided a developing device characterized in that the surface roughness (center line average surface roughness) of the developer supplying member is 5 μm or more.
このような本発明の現像装置によれば、現像剤
供給部材の表面が粗いことによつて、該供給部材
が現像剤担持体と圧接すると充分な電荷と量の現
像剤を与えるために画像濃度を維持することがで
きるものと考えられる。 According to the developing device of the present invention, the surface of the developer supplying member is rough, so that when the supplying member comes into pressure contact with the developer carrier, the image density is increased in order to provide sufficient charge and amount of developer. It is considered that it is possible to maintain the
以下、本発明の特徴を一層明らかにするため、
図面に示す実施例に沿つて本発明を説明する。 Below, in order to further clarify the features of the present invention,
The present invention will be explained along with embodiments shown in the drawings.
実施例
第１図は、本発明が適用される非磁性一成分現
像装置の典型例を示すものである。図に示すよう
に、回転しながら圧接している現像剤担持体１と
現像剤供給部材２に、適当なホツパ（図示せず）
から現像剤３が供給される。しかして、現像剤３
は、担持体１と供給部材２の圧接部所において摺
擦されて電荷が付与され、一部は供給部材の回転
に応じてその表面に保持されながら回転し、その
際、適当な部材８によつて層状に形成されながら
元の圧接部所に戻る。このようにして、電荷が付
与された現像剤は、逐次、供給部材２から担持体
１に送られる。担持体に供給された現像剤は、像
形成部材４によつて薄い層状に形成されながら、
静電潜像５を保持する保持体６に搬送され該潜像
５を可視像にする。保持体６と担持体１の間には
電圧源７によつてバイアス電源が付与されて現像
効率が高められるようになつている。Embodiment FIG. 1 shows a typical example of a non-magnetic one-component developing device to which the present invention is applied. As shown in the figure, a suitable hopper (not shown) is attached to the developer carrying member 1 and the developer supplying member 2, which are in pressure contact with each other while rotating.
The developer 3 is supplied from. However, developer 3
are rubbed against each other at the press-contact portion of the carrier 1 and the supply member 2 and are given an electric charge, and some of them rotate while being held on the surface of the supply member according to the rotation of the supply member. As a result, it returns to its original pressure-welded position while being formed into layers. In this way, the charged developer is sequentially sent from the supply member 2 to the carrier 1. The developer supplied to the carrier is formed into a thin layer by the image forming member 4, and
The electrostatic latent image 5 is conveyed to a holder 6 that holds the latent image 5, and the latent image 5 is made into a visible image. A bias power source is applied between the holder 6 and the carrier 1 by a voltage source 7, so that the developing efficiency is increased.
以上のような構成を有する現像装置を用いて次
のような条件で現像を行なつた。担持体１として
は、SUS製の直径13mmの円柱状部材に厚さ１mm、
比抵抗１０6Ω・cmのフエノール樹脂を被覆した
ものを用い、供給部材２としては、直径６mmの
SUS製円柱状部材に肉厚２mm、比抵抗１０3Ω・
cmのEPDMゴム層を被覆したものを用い、また、
現像剤３としては、カーボンブラツクをスチレン
アクリル樹脂中に分散させて得た粒径約10μｍの
ものを用いた。保持体６は、直径６mmの円筒状部
材の表面にSe系感光体を蒸着したものであり、
この上に表面電位950Vの静電潜像５を形成させ
た。層形成部材４は、SUS製の0.1mmの板バネ材
から成り、50ｇ／cm〜500ｇ／cmの範囲で担持体
１に圧接させた。層形成部材８は、SUS製0.1mm
の板バネ材から成り、現像剤供給部材２に圧接さ
せた。静電潜像保持体６と現像剤担持体１との間
隙は150μｍとした。保持体６を周速85mm／秒で
回転させ、他方、直流電圧500Vに交流電圧
800Vpp、300Hzを重畳して現像バイアス電圧とし
て付与しながら、現像剤担持体１と現像剤供給部
材とを圧接させて周速127.5mm／秒で回転させた。 Development was carried out under the following conditions using the developing device having the above configuration. The carrier 1 is a cylindrical member made of SUS with a diameter of 13 mm and a thickness of 1 mm.
A material coated with phenolic resin with a specific resistance of 10 6 Ω・cm was used, and the supply member 2 was a material with a diameter of 6 mm.
SUS cylindrical member with a wall thickness of 2 mm and a specific resistance of 10 3 Ω.
cm coated with an EPDM rubber layer, and
As the developer 3, one obtained by dispersing carbon black in styrene acrylic resin and having a particle size of about 10 μm was used. The holder 6 is a cylindrical member with a diameter of 6 mm with a Se-based photoreceptor deposited on the surface.
An electrostatic latent image 5 with a surface potential of 950V was formed on this. The layer forming member 4 was made of a 0.1 mm plate spring material made of SUS, and was brought into pressure contact with the carrier 1 in a range of 50 g/cm to 500 g/cm. Layer forming member 8 is made of SUS 0.1mm
It is made of a plate spring material and is brought into pressure contact with the developer supply member 2. The gap between the electrostatic latent image holder 6 and the developer carrier 1 was 150 μm. The holding body 6 is rotated at a circumferential speed of 85 mm/sec, and on the other hand, a DC voltage of 500 V is applied to an AC voltage.
While applying a superimposed developing bias voltage of 800 V pp and 300 Hz, the developer carrier 1 and the developer supply member were brought into pressure contact and rotated at a circumferential speed of 127.5 mm/sec.
かくして、現像剤供給部材２の表面のEPDM
ゴムを＃60のサンドペーパーを用いて粗面化する
ことによつて、その中心線平均表面粗さ（Ra）
を1μｍ〜10μｍの範囲で変えて、上述の条件下
に、ベタ黒領域から成る像の現像を行なつたとこ
ろ、第２図に示すような結果が得られた。なお、
供給部材２の表面を粗面化するには、サンドペー
パーを用いる他に、旋盤で研磨する等の手段を用
いてもよい。図において、Ｌは現像剤担持体１の
周長に相当する長さである。 Thus, the EPDM on the surface of the developer supply member 2
By roughening the rubber using #60 sandpaper, its centerline average surface roughness (Ra)
When an image consisting of a solid black area was developed under the above-mentioned conditions while changing the width in the range of 1 μm to 10 μm, the results shown in FIG. 2 were obtained. In addition,
In order to roughen the surface of the supply member 2, in addition to using sandpaper, means such as polishing with a lathe may be used. In the figure, L is a length corresponding to the circumferential length of the developer carrier 1.
第２図から理解されるように、現像剤供給部材
の表面粗さが低い場合には、広面積のベタ黒部を
現像すると、担持体１の周長以上の部所に相当す
る画像の濃度が薄くなつているが、該表面粗さが
5μｍ以上になるとそのような問題は解消する。 As can be understood from FIG. 2, when the surface roughness of the developer supplying member is low, when a wide area of solid black area is developed, the density of the image corresponding to the area longer than the circumference of the carrier 1 is reduced. Although it is thinner, the surface roughness is
Such problems disappear when the thickness becomes 5 μm or more.
発明の効果
上述したように、本発明の現像装置は、非磁性
一成分系現像剤を用いて現像するに当たり、広面
積のベタ黒部を現像した場合においても画像濃度
の変化の見られない良好な可視像を与えることが
できる。Effects of the Invention As described above, the developing device of the present invention provides good performance with no change in image density even when developing a solid black area over a wide area using a non-magnetic one-component developer. It can give a visible image.
第１図は、本発明が適用される非磁性一成分現
像装置の典型例を示す側部断面図であり、第２図
は、第１図に示す装置を用いて広面積のベタ黒部
を現像した場合の画像濃度が現像剤供給部材の表
面粗さRaによつて変わることを示すグラフであ
る。
１……現像剤担持体、２……現像剤供給部材、
３……現像剤、４……層形成部材、５…静電潜
像、６……潜像保持体。
FIG. 1 is a side sectional view showing a typical example of a non-magnetic one-component developing device to which the present invention is applied, and FIG. 3 is a graph showing that the image density changes depending on the surface roughness Ra of the developer supplying member. 1...Developer carrier, 2...Developer supply member,
3...Developer, 4...Layer forming member, 5...Electrostatic latent image, 6...Latent image holder.
Claims (1)
現像剤担持体とを備え、更に、前記現像剤担持体
に隣接して回転する静電潜像保持体を備え、非磁
性一成分現像剤が、前記現像剤供給部材と現像剤
担持体との間で摺擦されて所定の電荷が付与され
ながら現像剤供給部材から現像剤担持体に供給さ
れ、更に前記静電潜像保持体に送られて該潜像を
可視像に現像する非磁性一成分現像装置であつ
て、前記現像剤供給部材の中心線表面粗さが5μ
ｍ以上になつていることを特徴とする現像装置。1. A developer supplying member and a developer carrying member that are in pressure contact with each other while rotating, further comprising an electrostatic latent image holding member that rotates adjacent to the developer carrying member, and a non-magnetic one-component developer is provided. , the developer is rubbed between the developer supply member and the developer carrier and is supplied with a predetermined electric charge from the developer supply member to the developer carrier, and further sent to the electrostatic latent image carrier. a non-magnetic one-component developing device that develops the latent image into a visible image, the developer supplying member having a centerline surface roughness of 5 μm;
A developing device characterized in that it is larger than m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15343784A JPS6132075A (en) | 1984-07-24 | 1984-07-24 | Non-magnetic one component developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15343784A JPS6132075A (en) | 1984-07-24 | 1984-07-24 | Non-magnetic one component developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6132075A JPS6132075A (en) | 1986-02-14 |
| JPH048792B2 true JPH048792B2 (en) | 1992-02-18 |
Family
ID=15562501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15343784A Granted JPS6132075A (en) | 1984-07-24 | 1984-07-24 | Non-magnetic one component developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6132075A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022204872A1 (en) | 2021-05-21 | 2022-11-24 | Mitsubishi Heavy Industries, Ltd. | Inspection system, inspection procedures and inspection program |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0839708A (en) * | 1994-08-01 | 1996-02-13 | Teikoku Ink Seizo Kk | Article having non-adhesive surface and production thereof |
-
1984
- 1984-07-24 JP JP15343784A patent/JPS6132075A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022204872A1 (en) | 2021-05-21 | 2022-11-24 | Mitsubishi Heavy Industries, Ltd. | Inspection system, inspection procedures and inspection program |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6132075A (en) | 1986-02-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |