JPS6048066A - Copying machine - Google Patents
Copying machineInfo
- Publication number
- JPS6048066A JPS6048066A JP15672783A JP15672783A JPS6048066A JP S6048066 A JPS6048066 A JP S6048066A JP 15672783 A JP15672783 A JP 15672783A JP 15672783 A JP15672783 A JP 15672783A JP S6048066 A JPS6048066 A JP S6048066A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- developing tank
- destaticizing
- light
- static elimination
- 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
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
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
- G03G15/045—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas
- G03G15/047—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas for discharging non-image areas
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
く技術分野〉
本発明は被写機、さらに詳しくは複写機に備わる感光体
上の非画像部の光除電を行う光除電装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a photographing machine, and more particularly to an optical static eliminating device for optically neutralizing a non-image area on a photoreceptor provided in a copying machine.
〈従来技術〉
変倍時の非画像部の光除電方式に1d1従来のものとし
て下記の方式がある。なお、光除電装置には光源が備え
られる。<Prior Art> There is the following method as a conventional 1d1 optical charge removal method for a non-image area when changing magnification. Note that the optical static eliminator is equipped with a light source.
(1) 感光体表面よりある程度離れた位置に光除電装
置を設置して光除電を行う方式
(2)感光体表面近傍に発光素子光除電装置を設置して
光除電を行う方式。(1) A method in which a photostatic charge eliminator is installed at a certain distance from the surface of the photoreceptor to perform photostatic charge removal. (2) A method in which a light emitting element optical charge remover is installed near the surface of the photoreceptor to perform photostatic charge removal.
上記(1)の方式においては、感光体表面よシ離れてい
るた、めに、感光体上の除電しようとする位置の決定が
困難で、且つ遠距離のため光源には大きな光量を有する
ものが要求される。In the method (1) above, it is difficult to determine the position on the photoconductor where static electricity is to be removed because it is far from the surface of the photoconductor, and the light source has a large amount of light because it is far away. is required.
上記(2)の方式においては、感光体近傍設置のため光
源の光量は少なくて済むが、スペースの都合上制約があ
り、LEDやウェッジ球等をはめ込んだだけのものが大
半である。そのために、感光体上の原稿画像部と非画像
部との境界領域において、除電用の発光が非必要な部分
にまで進行していったり、又、除電位置の正確な位置決
め調整手段のないことから何かと不便な事態が生じ易い
。In the method (2) above, since the light source is installed near the photoreceptor, the amount of light from the light source is small, but there are restrictions due to space constraints, and most of the methods are simply fitted with LEDs, wedge bulbs, etc. For this reason, in the boundary area between the original image area and the non-image area on the photoreceptor, the light emission for charge removal may proceed to an unnecessary part, and there is no means for accurately positioning and adjusting the charge removal position. This can easily lead to some inconvenient situations.
〈発明の目的〉
本発明は上記の各方式の欠点を改善すべく、小光量で正
確且つ除電位置を正確に決定し得るところの光除電装置
を有する複写機を提供する。<Objective of the Invention> In order to improve the drawbacks of the above-mentioned systems, the present invention provides a copying machine having an optical charge removal device that can accurately determine the charge removal position with a small amount of light.
〈実施例〉
以下、図面に従って本発明の詳細な説明するO・本実施
例の複写機は下記2つの条件を満足さすようにして光除
電装置を開発した。<Example> Hereinafter, the present invention will be described in detail with reference to the drawings. In the copying machine of this example, an optical static eliminator was developed so as to satisfy the following two conditions.
■ 複写機(静電方式)においては、感光体上の電荷の
晴減衰、装置のコンパクト性等の問題より、感光体の帯
電、露光、視像という各プロセスの間をあま9大きくす
るときけできない。■ In copying machines (electrostatic type), due to problems such as the decay of the charge on the photoreceptor and the compactness of the device, it is difficult to distinguish between the processes of charging the photoreceptor, exposure, and visual image by increasing the gap by more than 9 degrees. .
■ 一方、変倍時の非画像部(感光体の進行方向と平行
な方向で該感光体の両側若しくは片側部分)を光除電す
るには、帯電工程から現像工程に移行する間に感光体に
光を照射しなければならない。即ち、原稿画像の感光体
上への投影の前後或いはそれと同時に光照射を実施しな
ければならない。■ On the other hand, in order to optically neutralize the non-image area (parts on both sides or one side of the photoconductor in a direction parallel to the direction of travel of the photoconductor) during magnification, it is necessary to light must be irradiated. That is, light irradiation must be performed before, after, or simultaneously with the projection of the original image onto the photoreceptor.
そこで、本実施例においては、感光体上の静電潜像を現
像する現像槽に光除電装置を増設した。Therefore, in this embodiment, an optical static eliminator was added to the developer tank for developing the electrostatic latent image on the photoreceptor.
第1図は本実施例の複写機の複写部分に関係する構造図
であり、1が感光ドラムである。以下、各工程に順して
説明する。FIG. 1 is a structural diagram related to the copying part of the copying machine of this embodiment, and 1 is a photosensitive drum. Below, each step will be explained in order.
(イ)帯電工程
上記感光ドラム1に帯電器2によりイオンが帯電される
。(a) Charging process The photosensitive drum 1 is charged with ions by the charger 2.
(ロ)露光工程
感光ドラム1上に光学系(図示していない。)にて送ら
れてきた原稿の画像の静電潜像を形成する。露光用光路
をKで示した。(b) Exposure step An electrostatic latent image of the image of the original document sent by an optical system (not shown) is formed on the photosensitive drum 1. The exposure optical path is indicated by K.
(ハ)除電工程
感光ドラム1上に除電ランプ体りより除電光を照射する
。この除電ランプ体りは次工程の現像を行う現像槽(箱
)3の上部(帯電器2のある側即ち原稿画像露光用光路
にの通過する側)傾該現像槽3と一体的につまり固着し
て設置されており、現像槽3け複写機の性格上感光ドラ
ムIVC対して正確な位置に配置されているから、それ
ゆえ前記現像槽3は除電用光源を正確に位置決めするこ
とができる。具体的な除電ランプ体りの構造は、第2図
の通りであって、感光ドラム1と平行に対峠されるべく
両側をフレームFで支えられた現像槽3のふた3aの上
面に該感光ドラム1と近接する縁辺の両端に除電ランプ
体LI 、 L2が設定される。(c) Static elimination process A static elimination light is irradiated onto the photosensitive drum 1 from a static elimination lamp body. This static elimination lamp body is integrally fixed with the tilted developer tank 3 (on the side where the charger 2 is located, that is, the side through which the optical path for exposing the original image passes) of the developer tank (box) 3 that performs the next step of development. Since the developer tank 3 is installed at an accurate position with respect to the photosensitive drum IVC due to the nature of the three-developer copying machine, the developer tank 3 can accurately position the light source for charge removal. The specific structure of the static elimination lamp body is as shown in FIG. Static elimination lamp bodies LI and L2 are set at both ends of the edge adjacent to the drum 1.
この2つの除電ランプ体L+ 、、 L2は内部構造は
同一なため一方側の除電ラング体L1 について述べる
。Since these two static elimination lamp bodies L+, L2 have the same internal structure, only one static elimination lamp body L1 will be described.
除電ランプ体L+ Kh2つのランプA、Bが設けられ
、それらランプA、Bけ共にランプ保持プリント基板P
W B K取り付けられている。Static elimination lamp body L + Kh Two lamps A and B are provided, and both lamps A and B are connected to the lamp holding printed circuit board P.
WBK is installed.
そして、ランプA、Bの感光ドラム1側には各ランプA
、Bの発光の通る光路を制限するスリン)Sが設けられ
、各スリットsの空隙(出口開孔)のみより光が館外す
る仕組みとなっている。又、各スリン)Sの出口開孔の
前面には該出口開孔の開放面積を適宜縮少(若しくは縮
少後拡大)する可動な調整板Tが付備されている。Each lamp A and B is placed on the photosensitive drum 1 side.
, B is provided to restrict the optical path of the emitted light from the slits S, and the light exits the building only through the gap (exit opening) of each slit s. In addition, a movable adjustment plate T is attached to the front surface of the outlet opening of each sulin (S) to appropriately reduce (or enlarge after reducing) the open area of the outlet opening.
上記の各構成部品はサイドラングホルダーHでふた3a
にビス固定されている。Each of the above components is attached to the lid 3a with the side rung holder H.
is fixed with screws.
なお、この除電ランプ体LI + L2は現像槽3とは
別部品で構成して該現像槽3のふた3aにビス固定(長
大に固定することで除電ランプL+ 、 L2を可動に
できる。)しているが、そのふた3a及び除電ランプ体
L+ 、 L2をアルミサツシ等で一体形成することも
可能である。Note that this static elimination lamp body LI+L2 is constructed as a separate part from the developer tank 3, and is fixed to the lid 3a of the developer tank 3 with screws (by fixing it in a long length, the static elimination lamps L+ and L2 can be made movable). However, it is also possible to integrally form the lid 3a and the static elimination lamp bodies L+ and L2 with aluminum sash or the like.
付は加えるに、ランプA、Bのフィラメントの方向は、
感光ドラム1上の除電域とそれ以外の領域との境界を明
確とするために、該感光ドラム1の回転方向に向けられ
ている。In addition, the direction of the filaments of lamps A and B is
In order to clarify the boundary between the static elimination area and other areas on the photosensitive drum 1, it is oriented in the rotational direction of the photosensitive drum 1.
に)現像工程
現像槽3より粒子が供給され潜像に粒子が電気的に吸引
させられ現像が行なわれる。B) Development process Particles are supplied from the developer tank 3 and are electrically attracted to the latent image to perform development.
Oう 転写工程 転写チャージャー4によって転写が成される。Ou Transfer process Transfer is performed by the transfer charger 4.
この段階で用紙は定着装置(図示ぜず)へ送られる。At this stage, the paper is sent to a fixing device (not shown).
(へ)除電工程及びクリーニング工程
除電チャージャー5によって感光ドラムlの表層が除電
され、引き続いてクリーナー6によってクリーニングさ
れる。(f) Static elimination process and cleaning process The surface layer of the photosensitive drum 1 is neutralized by the static elimination charger 5, and subsequently cleaned by the cleaner 6.
く効 果〉
以上の様に本発明の複写機によれば、感光体上の非画像
部の光除電を行う光除電装置が現像槽上部に、設けられ
ているから、
■ 除電領域を精確に決定できる。Effects> As described above, according to the copying machine of the present invention, since the optical static eliminating device for optically eliminating static electricity from the non-image area on the photoreceptor is provided above the developer tank, ■ the static electricity removal area can be precisely eliminated. You can decide.
■ 除電のための光源の位置決めが正確となる。■ The positioning of the light source for static elimination becomes accurate.
■ 光除電装置専用の位置決め、ガイド等が不要となる
から部品点数の削減ができる。■ The number of parts can be reduced because there is no need for positioning, guides, etc. exclusively for the optical static eliminator.
の効果を得る。obtain the effect of
第1図は本発明の複写機の感光ドラムを中心とした構造
図、第2図は本発明の複写機を特徴づける光除電装置の
構造図である。
1・・感光ドラム、2・・・帯電器、3・・現像槽、3
a・・・現像槽3のふた、4・・・転写チャージャー、
5・・・除電チャージャー、6・・クリーナー、L、L
l。
L2 ・・除電ランプ体、A、B・・・ランプ、PWB
・プリント基板、S・・スリット、T 調整板、H・
・サイドランプホルダー。
代理人 弁理士 福 士 愛 彦(他2名)5 第1g
IFIG. 1 is a structural diagram centered on the photosensitive drum of a copying machine according to the present invention, and FIG. 2 is a structural diagram of an optical neutralization device that characterizes the copying machine according to the present invention. 1...Photosensitive drum, 2...Charger, 3...Developer tank, 3
a... Lid of developer tank 3, 4... Transfer charger,
5... Static elimination charger, 6... Cleaner, L, L
l. L2... Static elimination lamp body, A, B... Lamp, PWB
・Printed circuit board, S...slit, T adjustment plate, H・
・Side lamp holder. Agent Patent attorney Aihiko Fuku (and 2 others) 5 1st g
I
Claims (1)
備する複写機であって、前記光除電装置を感光体上の潜
像を現像する現像槽に散設したことを特徴とする複写機
。1. A copying machine equipped with an optical static eliminating device for optically eliminating static electricity in a non-image area on a photoconductor, characterized in that the optical static eliminating device is disposed in a developer tank for developing a latent image on the photoconductor. copy machine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15672783A JPS6048066A (en) | 1983-08-25 | 1983-08-25 | Copying machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15672783A JPS6048066A (en) | 1983-08-25 | 1983-08-25 | Copying machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6048066A true JPS6048066A (en) | 1985-03-15 |
Family
ID=15634006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15672783A Pending JPS6048066A (en) | 1983-08-25 | 1983-08-25 | Copying machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6048066A (en) |
-
1983
- 1983-08-25 JP JP15672783A patent/JPS6048066A/en active Pending
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