JPH0222953B2 - - Google Patents
Info
- Publication number
- JPH0222953B2 JPH0222953B2 JP59110887A JP11088784A JPH0222953B2 JP H0222953 B2 JPH0222953 B2 JP H0222953B2 JP 59110887 A JP59110887 A JP 59110887A JP 11088784 A JP11088784 A JP 11088784A JP H0222953 B2 JPH0222953 B2 JP H0222953B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- image support
- transmitting member
- cylindrical
- exposure device
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/06—Eliminating residual charges from a reusable imaging member
- G03G21/08—Eliminating residual charges from a reusable imaging member using optical radiation
Landscapes
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電子写真複写機において、現像後転
写前或は分離後クリーニング前に全面露光して画
像支持体の表面から電荷を除去する除電用露光装
置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is an electrophotographic copying machine in which charges are removed from the surface of an image support by exposing the entire surface to light after development and before transfer, or after separation and before cleaning. The present invention relates to an exposure apparatus.
従来、電子写真複写機において、転写効率或は
クリーニング効率を向上させるために、現像後転
写前或は分離後クリーニング前に全面露光し画像
支持体の表面の電荷を消去することは、よく知ら
れている。例えば、特開昭56−60473号公報には、
画像支持体である感光体に付着しているトナーの
量に応じて転写部或はクリーニング部の前方に設
けられた露光ランプの光量を制御する技術として
記載されており、又、特開昭57−104170号公報に
は、現像後感光体に疲労を与えるスペクトル成分
を含まない光で感光体を全面露光する技術として
記載されている。
Conventionally, in electrophotographic copying machines, it is well known that in order to improve transfer efficiency or cleaning efficiency, the entire surface of the image support is exposed to light after development and before transfer, or after separation and before cleaning to erase charges on the surface of the image support. ing. For example, in Japanese Patent Application Laid-open No. 56-60473,
It is described as a technique for controlling the light amount of an exposure lamp provided in front of a transfer section or a cleaning section according to the amount of toner attached to a photoreceptor that is an image support, and is also disclosed in Japanese Patent Laid-Open No. 57 Japanese Patent No. 104170 describes a technique for exposing the entire surface of a photoreceptor to light that does not contain spectral components that cause fatigue to the photoreceptor after development.
従来の電子写真複写機における全面露光して画
像支持体の表面から電荷を消去する除電用露光装
置は、画像支持体の周辺部に設置されている。画
像支持体の周辺部には、塵埃や飛散トナーが浮遊
し、しかもこれら浮遊物は静電気を帯びている。
したがつて、除電用露光装置の発光表面は、前記
浮遊物が付着し汚染される。前記発光表面が汚染
されると、露光量が低下し所定の露光量を得るこ
とができず画像支持体の表面の電荷を消去するこ
とができない状態となる。そのため、従来は発光
表面の前面に防塵用のガラスを着脱自在に設ける
ことによつて、それを定期的に取外して清掃でき
るようにしていた。しかし、清掃する作業が煩し
いため、防塵用のガラスが汚染された状態で複写
作業が行われることが多く、露光量低下により転
写効率或はクリーニング効率が低下するという問
題点があつた。 In a conventional electrophotographic copying machine, an exposure device for removing electric charge, which exposes the entire surface to light to erase charges from the surface of an image support, is installed at the periphery of the image support. Dust and scattered toner float around the image support, and these floating objects are charged with static electricity.
Therefore, the light emitting surface of the exposure device for static elimination is contaminated by the floating matter attached thereto. If the light-emitting surface is contaminated, the amount of exposure decreases, making it impossible to obtain a predetermined amount of exposure and making it impossible to erase the charge on the surface of the image support. Therefore, in the past, a dustproof glass was removably provided in front of the light emitting surface so that it could be periodically removed for cleaning. However, since the cleaning work is troublesome, copying work is often performed with the dust-proof glass contaminated, and there is a problem in that the transfer efficiency or cleaning efficiency is reduced due to a reduction in the exposure amount.
本発明の目的は、従来の前記問題点を解消すべ
く、浮遊している塵埃や飛散トナーが発光表面の
前面に設けられた防塵用の透光部材に付着して
も、露光量不足を生じることがなく、しかも、従
来のもののように透光部材を定期的に取外して清
掃する必要のない、透光部材を自動的に清掃し得
る除電用露光装置を提供することにある。 An object of the present invention is to solve the above-mentioned conventional problems, and even if floating dust or scattered toner adheres to a dust-proof transparent member provided in front of a light emitting surface, insufficient exposure occurs. It is an object of the present invention to provide an exposure device for static elimination that can automatically clean a light-transmitting member without the need for periodic removal and cleaning of the light-transmitting member as in conventional devices.
本発明は、光源と、円柱状或は円筒状の透光部
材と、画像支持体の周面への対向側が開口して、
その開口側に前記透光部材をその円柱状或は円筒
状の軸が前記画像支持体の軸と平行するように回
転可能に支持するとともに、奥側に前記光源を支
持する枠体と、該枠体の前記透光部材周面と対向
する２面にそれぞれ保持されて透光部材周面と接
触する清掃部材と、前記透光部材を回転させる駆
動機構とを備えて成ることを特徴とする画像支持
体の除電用露光装置、にある。
The present invention includes a light source, a cylindrical or cylindrical light-transmitting member, and an image support having an opening on the side opposite to the peripheral surface of the image support.
A frame body rotatably supports the light transmitting member on the opening side so that its cylindrical or cylindrical axis is parallel to the axis of the image support, and supports the light source on the back side; It is characterized by comprising a cleaning member that is held on two surfaces of a frame body facing the circumferential surface of the light-transmitting member and comes into contact with the circumferential surface of the light-transmitting member, and a drive mechanism that rotates the light-transmitting member. This is an exposure device for eliminating static electricity from an image support.
本発明は、前記のように構成されているので、
除電用露光装置を現像部の下流に設けている場
合、浮遊している塵埃や飛散トナーが除電用露光
装置の透光部材に付着しても透光部材が回動し、
かつ、透光部材に清掃部材が接触しているので、
前記透光部材に付着した塵埃や飛散トナーは自動
的に除去される。従つて、光源の前面には透光部
材の清掃された新しい面が存在することになり、
画像支持体の面は露光量不足を生じることがなく
露光され、所定通り除電される。又、透光部材
は、自動的に清掃されるので、定期的に取外して
清掃する必要がない。 Since the present invention is configured as described above,
When the exposure device for static elimination is installed downstream of the developing section, even if floating dust or scattered toner adheres to the transparent member of the exposure device for static elimination, the transparent member will rotate.
In addition, since the cleaning member is in contact with the transparent member,
Dust and scattered toner adhering to the transparent member are automatically removed. Therefore, a new cleaned surface of the transparent member is present in front of the light source,
The surface of the image support is exposed to light without underexposure, and static electricity is removed as required. Furthermore, since the transparent member is automatically cleaned, there is no need to periodically remove and clean it.
本発明を実施例によつてより詳細に説明する。 The present invention will be explained in more detail by way of examples.
第１図は、実施例の概略説明図で、除電用露光
装置を現像部と転写部との間に設置した場合を示
す。第２図は、第１図の要部拡大図で、除電用露
光装置の構造を示す。第３図ａ及びｂは、透光部
材の作用を説明する図で、第３図ａは、平行光の
場合、第３図ｂは、拡散光の場合である。第１図
において、１は、画像支持体である感光体ドラ
ム、２は帯電電極、３は、原稿像を感光体ドラム
１の表面上に露光する光学系による像光、４は、
現像装置、５は、全面露光する除電用露光装置、
６は、転写電極、７は、分離電極、８は、クリー
ニング装置である。P1，P2は、給、排紙の方向
を示す。９は、本体側壁で、除電用露光装置５を
着脱できるガイド板９１を有している。第２図に
おいて、５１は、反射板５１′を有する光源、５
２は、透光部材であるガラス製、硬質樹脂製等の
透明な円柱状或は円筒状の回転体で、図示されて
いない駆動機構によつて回転駆動される。５３
は、フエルトから成る清掃部材であつて、回転体
５２に接触されている。５４は、引出し可能な廃
棄トナー桶で、回転体５２に付着しかつ清掃部材
で除去された塵埃、飛散トナー等を受ける容器で
ある。５６は、除電用露光装置の枠体５５に設け
られた空気孔である。 FIG. 1 is a schematic explanatory diagram of an embodiment, showing a case where an exposure device for static elimination is installed between a developing section and a transfer section. FIG. 2 is an enlarged view of the main part of FIG. 1, showing the structure of the exposure device for static elimination. FIGS. 3a and 3b are diagrams for explaining the action of the light-transmitting member. FIG. 3a is for parallel light, and FIG. 3b is for diffused light. In FIG. 1, 1 is a photoreceptor drum which is an image support, 2 is a charging electrode, 3 is image light from an optical system that exposes the original image onto the surface of the photoreceptor drum 1, and 4 is:
a developing device; 5 is an exposure device for static elimination that exposes the entire surface;
6 is a transfer electrode, 7 is a separation electrode, and 8 is a cleaning device. P 1 and P 2 indicate the feeding and discharging directions. Reference numeral 9 denotes a side wall of the main body, which has a guide plate 91 on which the exposure device 5 for static elimination can be attached and detached. In FIG. 2, 51 is a light source having a reflection plate 51';
Reference numeral 2 denotes a transparent cylindrical or cylindrical rotating body made of glass, hard resin, etc., which is a light-transmitting member, and is rotationally driven by a drive mechanism (not shown). 53
is a cleaning member made of felt and is in contact with the rotating body 52. Reference numeral 54 denotes a removable waste toner bucket, which is a container for receiving dust, scattered toner, etc. attached to the rotating body 52 and removed by the cleaning member. 56 is an air hole provided in the frame 55 of the exposure device for static elimination.
除電用露光装置５は、回転体５２が円柱状或は
円筒状であるためレンズ作用をなし、光源５１が
平行光である場合も拡散光である場合も共に第３
図ａ及びｂに示すように入射光Lioが或る程度集
光され、照射光Lputが感光体ドラム１の表面を効
率的に全面露光する。それによつて、感光体ドラ
ム１の表面の電荷は消去される。 Since the rotating body 52 is columnar or cylindrical, the exposure device 5 for static elimination functions as a lens, and when the light source 51 is parallel light or diffused light, the third
As shown in FIGS. a and b, the incident light L io is focused to a certain extent, and the irradiation light L put efficiently exposes the entire surface of the photoreceptor drum 1. As a result, the charge on the surface of the photoreceptor drum 1 is erased.
一方、除電用露光装置５は、現像装置４の下流
に設けられているので、浮遊している塵埃や飛散
トナーが回転体５２の面に付着する。しかし、回
転体５２は駆動機構（図示せず）によつて回転さ
れ、かつ、清掃部材５３が回転体５２の面に接触
しているので、回転体５２の面に付着した塵埃や
飛散トナーは清掃部材５３で除去される。従つ
て、光源５１の前面には回転体５２の清掃された
新しい面が存在することになり、感光体ドラム１
の面は露光量不足を生じることがなく露光され、
所定通り除電される。又、回転体５２は、自動的
に清掃されるので、定期的に取外して清掃する必
要がない。 On the other hand, since the static eliminating exposure device 5 is provided downstream of the developing device 4, floating dust and scattered toner adhere to the surface of the rotating body 52. However, since the rotating body 52 is rotated by a drive mechanism (not shown) and the cleaning member 53 is in contact with the surface of the rotating body 52, dust and scattered toner attached to the surface of the rotating body 52 are removed. It is removed by the cleaning member 53. Therefore, a new cleaned surface of the rotating body 52 exists in front of the light source 51, and the photosensitive drum 1
The surface is exposed without underexposure,
Static electricity is removed as specified. Further, since the rotating body 52 is automatically cleaned, there is no need to periodically remove and clean it.
なお、清掃部材は、ゴムや合成樹脂等の材料を
用いてもよい。 Note that the cleaning member may be made of a material such as rubber or synthetic resin.
本発明は、複写装置における除電用露光装置の
光源の前面に回動する透光部材を設け、かつ光透
部材に接触するように清掃部材を設けているの
で、透光部材に付着した塵埃や飛散トナーは自動
的に除去される。従つて、光源の前面には透光部
材の清掃された新しい面が存在することになり、
画像支持体の面は露光量不足を生じることがなく
露光され、所定通り除電される。又、透光部材
は、自動的に清掃されるので、定期的に取外して
清掃する必要を生じない。
According to the present invention, a rotating light-transmitting member is provided in front of the light source of the exposure device for static elimination in a copying machine, and a cleaning member is provided so as to come into contact with the light-transmitting member. Spattered toner is automatically removed. Therefore, a new cleaned surface of the transparent member is present in front of the light source,
The surface of the image support is exposed to light without underexposure, and static electricity is removed as required. Furthermore, since the transparent member is automatically cleaned, there is no need to periodically remove and clean it.
以上のように、本発明は、除電用露光装置を改
良することによつて、従来のもののように透光部
材が汚染されることがなく、転写効率或はクリー
ニング効率の低下を著しく少なくすることができ
る。 As described above, the present invention improves the exposure device for static elimination so that the light-transmitting member is not contaminated unlike the conventional ones, and the reduction in transfer efficiency or cleaning efficiency is significantly reduced. Can be done.
第１図は、実施例の概略説明図、第２図は、第
１図の要部拡大図、第３図ａ，ｂは、透光部材の
作用の説明図である。
１：感光体ドラム、２：帯電電極、３：像光、
４：現像装置、５：除電用露光装置、６：転写電
極、７：分離電極、８：クリーニング装置、５
１：光源、５２：円柱状の回転体、５３：清掃部
材、５４：廃棄トナー桶。
FIG. 1 is a schematic explanatory diagram of the embodiment, FIG. 2 is an enlarged view of the main part of FIG. 1, and FIGS. 3 a and 3 b are explanatory diagrams of the action of the light-transmitting member. 1: Photosensitive drum, 2: Charging electrode, 3: Image light,
4: Developing device, 5: Exposure device for static elimination, 6: Transfer electrode, 7: Separation electrode, 8: Cleaning device, 5
1: light source, 52: cylindrical rotating body, 53: cleaning member, 54: waste toner bucket.
Claims (1)
像支持体の周面への対向側が開口して、その開口
側に前記透光部材をその円柱状或は円筒状の軸が
前記画像支持体の軸と平行するように回転可能に
支持するとともに、奥側に前記光源を支持する枠
体と、該枠体の前記透光部材周面と対向する２面
にそれぞれ保持されて透光部材周面と接触する清
掃部材と、前記透光部材を回転させる駆動機構と
を備えて成ることを特徴とする画像支持体の除電
用露光装置。 ２ 画像支持体に対して現像装置の下流側に設け
られている特許請求の範囲第１項記載の画像支持
体の除電用露光装置。[Scope of Claims] 1. A light source, a cylindrical or cylindrical light-transmitting member, and an opening on the side opposite to the peripheral surface of the image support, and the light-transmitting member is attached to the cylindrical or cylindrical shape on the opening side. a frame body rotatably supported so that a cylindrical axis is parallel to the axis of the image support body and supporting the light source on the back side; and two surfaces of the frame body facing the circumferential surface of the light-transmitting member. 1. An exposure device for removing static electricity from an image support, comprising: cleaning members that are respectively held by and in contact with a peripheral surface of a light-transmitting member; and a drive mechanism that rotates the light-transmitting member. 2. An exposure device for removing static electricity from an image support according to claim 1, which is provided downstream of the developing device with respect to the image support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11088784A JPS60256184A (en) | 1984-06-01 | 1984-06-01 | Copying device with exposing device for destaticizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11088784A JPS60256184A (en) | 1984-06-01 | 1984-06-01 | Copying device with exposing device for destaticizing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60256184A JPS60256184A (en) | 1985-12-17 |
| JPH0222953B2 true JPH0222953B2 (en) | 1990-05-22 |
Family
ID=14547208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11088784A Granted JPS60256184A (en) | 1984-06-01 | 1984-06-01 | Copying device with exposing device for destaticizing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60256184A (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5616616Y2 (en) * | 1976-07-27 | 1981-04-17 | ||
| JPS58103057U (en) * | 1981-12-28 | 1983-07-13 | セイコーエプソン株式会社 | Position adjustment structure of liquid crystal optical valve device |
-
1984
- 1984-06-01 JP JP11088784A patent/JPS60256184A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60256184A (en) | 1985-12-17 |
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