JPS61170756A - Exposing device of copying machine - Google Patents

Exposing device of copying machine

Info

Publication number
JPS61170756A
JPS61170756A JP60009898A JP989885A JPS61170756A JP S61170756 A JPS61170756 A JP S61170756A JP 60009898 A JP60009898 A JP 60009898A JP 989885 A JP989885 A JP 989885A JP S61170756 A JPS61170756 A JP S61170756A
Authority
JP
Japan
Prior art keywords
sensor
original
light
copying
latent 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.)
Granted
Application number
JP60009898A
Other languages
Japanese (ja)
Other versions
JPH0476111B2 (en
Inventor
Kikuo Oki
大木 喜久男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP60009898A priority Critical patent/JPS61170756A/en
Publication of JPS61170756A publication Critical patent/JPS61170756A/en
Publication of JPH0476111B2 publication Critical patent/JPH0476111B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/04Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/045Apparatus 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
    • G03G15/047Apparatus 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)
  • Holders For Sensitive Materials And Originals (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To improve the efficiency of copying and the copying performance by installing an original size detecting sensor on a light shielding film which has been provided so as to be movable under a platen, so that an erasing light source can emit light selectively in accordance with a signal from the sensor. CONSTITUTION:When an operating switch is turned on, a light shielding film 6 is moved to an open side, and simultaneously, a sensor 8 also moves and detects the presence of an original A. By the sensor 8, a distance of a spread part of the original A is detected and stored in a controlling circuit. Also, the end part of the original A is detected, and thereafter, it is overtraveled by a set distance and its movement is stopped, and thereafter, the sensor is fed back again to the original end part position, and the detection of the original size is ended. On a copying band part C corresponding to the spread part of the original A is formed as a latent image, but when the copying form B passes through a black band latent image erasing light source 9, the black band part C is erased. The light emission time of the black band latent image erasing light source 9 is set by the width of the sheet part detected by the sensor 8 and a moving speed of a photosensitive belt 4.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は複写機の露光装置に関するもので、更に詳細
には、原稿のサイズ検出及び書籍等の厚手の原稿におい
て生じる見開き部の黒帯状潜像の消去を可能にすること
を目的とする複写機の露光装置に関するものである。
Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an exposure device for a copying machine, and more particularly, it relates to the detection of the size of a document and the detection of a black band-like pattern on a double-page spread that occurs in a thick document such as a book. The present invention relates to an exposure device for a copying machine whose purpose is to erase images.

[従来の技術] 一般に複写機には、一端が枢支されたプラテンカバーが
装備されており、複写作業時にこのプラテンカバーによ
り複写機の強い光が直接操作者の目に入らないように遮
光している。しかし、厚い書籍等のような原稿を複写す
る場合には上記プラテンカバーでは覆うことができず、
複写機の強い光が直接操作者の目を射ることとなって、
複写作業が苦痛となっていた。また、スリット露光方式
の複写機では、原稿の置かれなかった部分が黒縁となる
という不都合があった。そこで、従来では、第7図及び
第8図に示すように、プラテン(a>の下方でかつ原稿
載置基準縁の対側に、縦横2本の巻取りロール(b)、
(C)を軸設し、これら各ローラ(b)、(c)にシー
ト状遮光部材(d)、(e)の各一端を巻取ると共に、
これら遮光部材(d)、(e)の他端を複写機本体(f
)の外部に設けたつまみ(1,(h)によって上記基準
方向に引出し可能に張設して成る露光装置が開発された
。そして、この露光装置によって原稿(1)を複写する
場合には、第7図に示すようにプラテン(a)上に原稿
(i)を載置すると共に、各つまみ(Q)、(f)をも
って縦及び横方向から遮光部材(d)、(e)を引出せ
ば、原稿(i)の複写すべき部分を常にコピー紙上の定
位置に揃えて複写することができるものであった。
[Prior Art] Copying machines are generally equipped with a platen cover that is pivoted at one end. During copying operations, this platen cover blocks strong light from the copying machine from directly entering the operator's eyes. ing. However, when copying thick originals such as books, the platen cover cannot cover them.
The strong light from the copying machine will shine directly into the eyes of the operator.
Copying work was becoming a pain. Further, in the slit exposure type copying machine, there is an inconvenience that the area where the original is not placed has a black border. Therefore, conventionally, as shown in FIGS. 7 and 8, two vertical and horizontal winding rolls (b) are placed below the platen (a> and on the opposite side of the document placement reference edge).
(C) is installed as a shaft, and one end of each of the sheet-like light shielding members (d) and (e) is wound around each of these rollers (b) and (c), and
Connect the other ends of these light shielding members (d) and (e) to the copying machine body (f).
) has been developed so that it can be pulled out in the reference direction by means of a knob (1, (h) provided on the outside).When copying a document (1) using this exposure device, As shown in Figure 7, place the original (i) on the platen (a) and pull out the light shielding members (d) and (e) from the vertical and horizontal directions using the respective knobs (Q) and (f). , the portion of the document (i) to be copied can always be aligned and copied at a fixed position on the copy paper.

[発明が解決しようとする問題点1 しかしながら、従来の露光装置においては、遮光膜のセ
ットが面倒であり、また、書籍等のような厚い原稿を複
写する場合には、書箱の見開き部がプラテンから離れる
ため、黒帯潜像が生じてこの黒帯潜像がコピー用紙にそ
のまま転写されるという問題があった。そのため、現状
ではその解決策が望まれている。
[Problem to be Solved by the Invention 1] However, in the conventional exposure apparatus, it is troublesome to set the light-shielding film, and when copying thick originals such as books, the double-page spread of the bookcase is difficult to set. Since it is separated from the platen, there is a problem in that a black band latent image is generated and this black band latent image is directly transferred to the copy paper. Therefore, a solution to this problem is currently desired.

「問題点を解決するための手段] この発明は上記問題を解決することを企図してなされた
もので、上記技術的課題を解決するための手段として、
原稿を載置するプラテンの下方に、照明用光源及び結像
レンズ等を有する光学系と、この光学系により静電潜像
が形成される感光体とを具備して成る複写機において、
上記プラテンの下方に遮光膜を移動可能に配設すると共
に゛、この遮光膜上に原稿サイズ検知用センサーを設置
し、上記感光体の露光部の次工程近接位置には黒帯部像
部消去用光源を配設すると共に、この消去用光源を上記
センサーからの信号により選択的に発光可能に形成して
成ることを特徴とする複写機の露光装置を提供しようと
するものである。
"Means for Solving the Problems" This invention was made with the intention of solving the above problems, and as a means for solving the above technical problems,
A copying machine comprising an optical system having an illumination light source, an imaging lens, etc. below a platen on which a document is placed, and a photoreceptor on which an electrostatic latent image is formed by the optical system.
A light-shielding film is movably disposed below the platen, and a sensor for detecting the document size is installed on the light-shielding film, and a black band image area is erased at a position close to the exposure area of the photoreceptor for the next process. An object of the present invention is to provide an exposure device for a copying machine, characterized in that the erasing light source is configured to be able to selectively emit light in response to a signal from the sensor.

[作用] 上記技術的手段は次のように作用する。[Effect] The above technical means works as follows.

原稿をセットした後、複写操作を開始すると、遮光膜が
移動すると共に、原稿サイズ検知用センサーが原稿サイ
ズを検知して遮光膜の移動手段に信号を送るため、遮光
膜は所定の位置に位置決めされて、原稿の複写すべき部
分を常にコピー紙上(7) ’l jn fiii I
−−m i Zz ′:k 7り’ T e 6・1ゞ
・1等01厚い原稿を複写する場合には、上記原稿サイ
ズ検知用センサーにより、書籍の見開き部分を検知し、
その信号を黒帯潜像消去用光源に伝達して、この光源を
所定時間発光することにより、感光体に露光された黒帯
潜像を消去することができる。
When you start copying after setting the original, the light-shielding film moves, and the original size detection sensor detects the original size and sends a signal to the light-shielding film moving means, so the light-shielding film is positioned at a predetermined position. (7) 'l jn fiii I
--m i Zz ′:k 7ri' T e 6・1ゞ・1 etc. 01 When copying a thick document, the document size detection sensor detects the double-page spread of the book,
By transmitting the signal to a light source for erasing a black band latent image and causing this light source to emit light for a predetermined period of time, the black band latent image exposed on the photoreceptor can be erased.

[実施例] 以下にこの発明の実施例を図面に基づいて詳細に説明す
る。
[Example] Examples of the present invention will be described in detail below based on the drawings.

第1図はこの発明の露光装置の概略斜視図を示し、また
、第2図はその概略側面図を示すもので、この発明の露
光装置は、プラテン(1)の下方に、照明用光源(2)
及び結像レンズ(3)等を有する光学系(5)と、この
光学系(5)により静電潜像が形成される感光体すなわ
ち感光ベルト(4)とで主要部が構成された複写機内に
装備されており、その構造は、上記プラテン(1)の下
面に移動手段である正逆回転可能なモーター(7)によ
って移動可能に配設される遮光l!i!(6)と、この
遮光It! (6)上に設置されて上記プラテン(1)
上に載置される原稿(A)のサイズを検知する原稿サイ
ズ検知用センサー(8)と、このセンサー〈8)から信
号を受けて選択的に発光すると共に上記感光ベルト(4
)の露光部の次工程側近接位置に配設される黒帯潜像消
去用光源(9)とで構成されている。
FIG. 1 shows a schematic perspective view of an exposure apparatus of the present invention, and FIG. 2 shows a schematic side view thereof. 2)
Inside the copying machine, the main parts are composed of an optical system (5) having an imaging lens (3), etc., and a photoreceptor, that is, a photoreceptor belt (4), on which an electrostatic latent image is formed by this optical system (5). The structure is such that the light-shielding l! i! (6) And this shading It! (6) Installed on the above platen (1)
A document size detection sensor (8) detects the size of the document (A) placed thereon, and receives a signal from this sensor (8) to selectively emit light, and the photosensitive belt (4)
) and a black band latent image erasing light source (9) disposed at a position close to the next process side of the exposure section.

上記遮光g! (6)は、その一端がモーター(7)に
よって回転される軸(10)に装着された巻取りロール
(11)に巻回され、また、他端には断面クランク状の
縁部材(12)が取付けられている。この縁部材(12
)の両側端にワイヤ等の索条(13)の一端が連結され
、そして、この索条(13)は上記軸(10)と対峙す
る従動側軸(14)に装着されたブーり等の伝達車(1
5)に巻回されると共に、上記軸(10)に装着された
駆動側の伝達車(16)に他端側が巻架されている。し
たがって、上記モーター(7)が図において時計方向に
回転すると、軸(10)及び伝達車(16)及び(15
)が回転し、これに伴って上記索条(13)が移動して
遮光膜(6)が開口方向に移動する。また、逆に、上記
モーター(7)が反時計方向に回転すると、同様にして
遮光膜(6)は閉鎖方向に移動する。なおこの場合、遮
光膜(6)の移動手段は必ずしも正逆回転可能なモータ
ー(7)である必要はなく、例えば、軸(10)及び従
動側軸(14)にそれぞれモーターを連結して、選択的
にいずれかのモーターを駆動させるようにしてもよい。
Above shading g! (6) has one end wound around a winding roll (11) attached to a shaft (10) rotated by a motor (7), and an edge member (12) having a crank-shaped cross section at the other end. is installed. This edge member (12
) is connected to one end of a cable (13) such as a wire, and this cable (13) is connected to a bobbin or the like mounted on a driven shaft (14) facing the shaft (10). Transmission car (1
5), and the other end is wound around a drive-side transmission wheel (16) mounted on the shaft (10). Therefore, when the motor (7) rotates clockwise in the figure, the shaft (10) and the transmission wheels (16) and (15)
) rotates, the cable (13) moves accordingly, and the light-shielding film (6) moves in the opening direction. Conversely, when the motor (7) rotates counterclockwise, the light shielding film (6) similarly moves in the closing direction. In this case, the means for moving the light shielding film (6) does not necessarily have to be a motor (7) capable of forward and reverse rotation; for example, motors may be connected to the shaft (10) and the driven shaft (14), respectively. Either motor may be selectively driven.

また、上記原稿サイズ検知用センサー(8)は例えば光
反射型はンサーにて構成されると共に上記縁部材(12
)の水平部(12a)上に設置されている。このセンサ
ー(8)は原稿(A)のサイズを検出すると共に、図示
しない制御回路によって原稿サイズ検出後、所定の距離
範囲(例えば20〜50、 )オーバートラベルし、こ
の距離以上の範囲において原1(A)を検知しない場合
には上記モーター(7)に停止信号を送り、また、オー
バートラベル後新たに原稿(A)を検出した場合には更
に移動するようになっている。
Further, the document size detection sensor (8) is constituted by, for example, a light reflection type sensor, and the edge member (12)
) is installed on the horizontal part (12a). This sensor (8) detects the size of the document (A), and after detecting the document size by a control circuit (not shown), overtravels a predetermined distance range (for example, 20 to 50 degrees), and the document If the original (A) is not detected, a stop signal is sent to the motor (7), and if the original (A) is newly detected after overtravel, the original (A) is moved further.

一方、上記黒帯潜像消去用光源(9)は、例えば第3図
に示すように、上記感光ベルト(4)側に向って開口す
ると共に感光ベルト(4)の幅方向に配置されるチャン
ネル状のケース(17)の底部にに配設されたプリント
基板(18)上に適宜間隔をおいて配列される複数の発
光ダイオード等で構成されており、そして、上記センサ
ー(8)からの信号を受けて選択的に発光すると共に、
所定の時間発光するようになっている。なおこの場合、
上記黒帯潜像消去用光1t!<9)は必ずしも発光ダイ
オードである必要はなく、蛍光燈等の光漁であってもよ
く、この光源からの光を例えば透明の7グリル板や光フ
ァイバー等を介して上記感光ベルト(4)側に照射する
ようにしてもよい。
On the other hand, the black band latent image erasing light source (9) has a channel that opens toward the photosensitive belt (4) and is arranged in the width direction of the photosensitive belt (4), as shown in FIG. 3, for example. It is composed of a plurality of light emitting diodes, etc. arranged at appropriate intervals on a printed circuit board (18) disposed at the bottom of a shaped case (17), and receives signals from the sensor (8). In addition to selectively emitting light in response to
It is designed to emit light for a predetermined period of time. In this case,
1 ton of light for erasing the black belt latent image! <9) does not necessarily have to be a light emitting diode, but may be a light source such as a fluorescent light, and the light from this light source is transmitted to the photosensitive belt (4) side through a transparent grill plate, optical fiber, etc. Alternatively, the irradiation may be performed to

次にこの発明の露光装置の作動態様について説明する。Next, the operating mode of the exposure apparatus of this invention will be explained.

まず、書籍等の厚い原稿(A)をコピーする場合には、
第4図(a)ないしくf)及び第5図に示すように、第
4図(a)の作動前の状態において図示しない操作スイ
ッチをON操作すると、モーター(7)が駆動して遮光
膜(6)を開放側に移動し、この遮光膜(6)の移動に
伴ってセンサー3°) tz$!1lLTIjili 
(A ) (7)#alllt8°  lそして、同図
(b)及び(C)に示すようにセンサー(8)によって
原稿(A)の見開き部分の距離が検知され制御jrgJ
路部に記憶される。しかる後更にセンサー(8)によっ
て原稿(A)の端部が検知された後(同図(d)参照)
、同図(e)に示すように所定の設定された距離だけオ
ーバートラベルし、上記モーター(7)に停止信号を送
って移動が停止された後、再び原稿端部位置にフィード
バックして、原稿サイズの検知が終了する。
First, when copying thick originals (A) such as books,
As shown in FIG. 4(a) to f) and FIG. 5, when the operation switch (not shown) is turned ON in the state before operation in FIG. 4(a), the motor (7) is driven and the light shielding film is (6) to the open side, and as the light-shielding film (6) moves, the sensor will move 3°) tz$! 1lLTIjili
(A) (7) #alllt8° l Then, as shown in (b) and (C) of the same figure, the distance between the two-page spread of the original (A) is detected by the sensor (8) and the control jrgJ
stored in the road section. After that, the edge of the document (A) is further detected by the sensor (8) (see (d) in the same figure).
, as shown in Figure (e), overtravels by a predetermined distance, sends a stop signal to the motor (7) to stop the movement, and then feeds back to the document edge position again to move the document. Size detection ends.

この動作に連動して通常のコピー動作が行われ、感光ベ
ルト(4)に静電部会が形成されると共に、この感光ベ
ルト(4)に供給されるコピー用紙(B)に結像潜像が
形成される。このとき、コピー用紙(B)に原稿(A)
の見開き部に相当する黒帯部(C)が潜像されるが、コ
ピー用紙(B)が黒帯潜像消去用光2vi(9)を通過
する際にこの黒帯潜像消去用光源(9)の発光により黒
帯部(C)は消去される(第5図参照)。この場合、上
記黒帯潜像消去用光源(9)の発光時間は、あらかじめ
上記センサー(8)によって検知された見開き部の幅と
感光ベルト(4)の移動速度によって設定される。
A normal copying operation is performed in conjunction with this operation, and an electrostatic force is formed on the photosensitive belt (4), and a latent image is formed on the copy paper (B) fed to the photosensitive belt (4). It is formed. At this time, the original (A) is placed on the copy paper (B).
A latent image is formed on the black belt area (C) corresponding to the double-page spread, but when the copy paper (B) passes through the black belt latent image erasing light 2vi (9), this black belt latent image erasing light source ( 9), the black band (C) is erased (see FIG. 5). In this case, the light emitting time of the black band latent image erasing light source (9) is set based on the width of the double-page spread detected in advance by the sensor (8) and the moving speed of the photosensitive belt (4).

また、通常の原稿(Ao)を複写する場合には、第6図
(a)ないしくd)に示すように、上記書籍等の原稿(
A)と同様に同図(a)の状態で操作スイッチをON操
作すると、モーター(7)が駆動して遮光11(6)が
開放方向に移動し、センサー(8)によって原稿(Ao
)の端部が検知される(同図(b)参照)、、その後、
遮光膜(6)は所定の範囲をオーバートラベルした後停
止し、モーター(7)の逆転等によって原稿端部位置に
フィードバックする(同図(c)、(d)参照)。そし
て、通常の複写動作がなされるが、この際上記黒帯潜像
消去用光源(9)は発光せずコピー用紙(B)には照射
されない。
In addition, when copying a normal manuscript (Ao), as shown in Fig. 6 (a) to d), the manuscript (Ao) such as the above-mentioned books, etc.
Similarly to A), when the operation switch is turned ON in the state shown in FIG.
) is detected (see figure (b)), then,
The light-shielding film (6) stops after overtravelling within a predetermined range, and feeds back to the document edge position by reversing the motor (7) or the like (see (c) and (d) in the same figure). Then, a normal copying operation is performed, but at this time, the black band latent image erasing light source (9) does not emit light and does not irradiate the copy paper (B).

なお、上記実施例では遮光膜(6)がプラテン(1)の
−側方向に移動する場合ついて説明したが、実際にはこ
の方向と直交する方向にも同様に遮光膜(6)を配設し
て同様の操作を行わせて原稿(A)、  (A’)のサ
イズに合致した複写部分の設定を行うものである。
In addition, in the above embodiment, the case where the light shielding film (6) moves in the negative direction of the platen (1) was explained, but in reality, the light shielding film (6) is similarly arranged in a direction perpendicular to this direction. Then, similar operations are performed to set the copy portion that matches the size of the originals (A) and (A').

[発明の効果] 以上に説明したように、この発明の露光装置によれば、
プラテンの下方に遮光膜を移動可能に配設すると共に、
この遮光膜上に原稿サイズ検知用センサーを設置し、上
記感光体の露光部の次工程近接位置には黒帯潜像消去用
光源を配設すると共に、この消去用光源を上記センサー
からの信号により選択的に発光可能に形成して成るため
、以下のような効果が得られる。
[Effects of the Invention] As explained above, according to the exposure apparatus of the present invention,
A light-shielding film is movably arranged below the platen, and
A sensor for detecting the document size is installed on this light-shielding film, and a light source for erasing a black band latent image is installed near the exposure area of the photoreceptor for the next process. Since it is formed so that it can selectively emit light, the following effects can be obtained.

1)複雑な操作を必要とすることなく簡単に原稿のリイ
ズに合致した複写部分をプラテン上に設定することがで
きるため、複写作業能率の向上が図れる。
1) Since a copy portion matching the size of the original can be easily set on the platen without requiring complicated operations, copying efficiency can be improved.

2)書籍等の厚手の原稿にあっても見開き部に相当する
黒帯潜像部を消去することができるため、複写性能の向
上を図ることができる。
2) Even in thick originals such as books, the black band latent image area corresponding to the double-page spread area can be erased, so that copying performance can be improved.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の露光装置の概略斜視図、第2図はそ
の概略側面図、第3図はこの発明における黒帯潜像消去
用光源の一例を示す断面斜視図、第4図(a)ないしく
f)はこの発明の露光装置の作動態様を示す概略側面図
、第5図は黒帯潜像消去用光源の作動態様を示す概略側
面図、第6図(a)ないしくd)はこの発明の露光装置
の別の作動態様を示す概略側面図、第7図は従来の露光
装置の全体を示す斜視図、第8図はその要部を示す斜視
図である。 符号説明 (1)・・・プラテン  (2)・・・照明用光源(3
)・・・結像レンズ (4)・・・感光ベルト(感光体) (5)・・・光学系   (6)・・・遮光膜(7)・
・・モーター (8)・・・原稿サイズ検知用センサー(9)・・・黒
帯潜像消去用光源 特 許 出 願 人 富士ゼロックス株式会社代  理
  人  弁理士  中  村  智  廣同    
   同   成  瀬  勝  夫1ニブラテン 第3yA 第4図 第7図 第8図
FIG. 1 is a schematic perspective view of the exposure apparatus of the present invention, FIG. 2 is a schematic side view thereof, FIG. 3 is a cross-sectional perspective view showing an example of a light source for erasing black band latent images in the present invention, and FIG. ) or f) is a schematic side view showing the operating mode of the exposure apparatus of the present invention, FIG. 5 is a schematic side view showing the operating mode of the light source for erasing a black band latent image, and FIGS. 7 is a schematic side view showing another operating mode of the exposure apparatus of the present invention, FIG. 7 is a perspective view showing the entire conventional exposure apparatus, and FIG. 8 is a perspective view showing the main parts thereof. Explanation of symbols (1)...Platen (2)...Light source for illumination (3
)...Imaging lens (4)...Photosensitive belt (photoreceptor) (5)...Optical system (6)...Light shielding film (7)
...Motor (8) ...Sensor for document size detection (9) ...Light source for erasing black band latent images Patent Applicant: Fuji Xerox Co., Ltd. Agent Patent attorney: Satoshi Nakamura Hirodo
Katsuo Naruse 1 Nibraten 3rd year A Figure 4 Figure 7 Figure 8

Claims (1)

【特許請求の範囲】[Claims] 原稿を載置するプラテンの下方に、照明用光源及び結像
レンズ等を有する光学系と、この光学系により静電潜像
が形成される感光体とを具備して成る複写機において、
上記プラテンの下方に遮光膜を移動可能に配設すると共
に、この遮光膜上に原稿サイズ検知用センサーを設置し
、上記感光体の露光部の次工程近接位置には黒帯潜像消
去用光源を配設すると共に、この消去用光源を上記セン
サーからの信号により選択的に発光可能に形成して成る
ことを特徴とする複写機の露光装置。
A copying machine comprising an optical system having an illumination light source, an imaging lens, etc. below a platen on which a document is placed, and a photoreceptor on which an electrostatic latent image is formed by the optical system.
A light-shielding film is movably disposed below the platen, a sensor for detecting the document size is installed on the light-shielding film, and a light source for erasing a black band latent image is provided at a position close to the exposure area of the photoreceptor for the next process. An exposure device for a copying machine, characterized in that the erasing light source is configured to selectively emit light in response to a signal from the sensor.
JP60009898A 1985-01-24 1985-01-24 Exposing device of copying machine Granted JPS61170756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60009898A JPS61170756A (en) 1985-01-24 1985-01-24 Exposing device of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60009898A JPS61170756A (en) 1985-01-24 1985-01-24 Exposing device of copying machine

Publications (2)

Publication Number Publication Date
JPS61170756A true JPS61170756A (en) 1986-08-01
JPH0476111B2 JPH0476111B2 (en) 1992-12-02

Family

ID=11732936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60009898A Granted JPS61170756A (en) 1985-01-24 1985-01-24 Exposing device of copying machine

Country Status (1)

Country Link
JP (1) JPS61170756A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0266797A2 (en) 1986-11-07 1988-05-11 Fuji Photo Film Co., Ltd. Method of processing silver halide color photographic material and photographic color developing composition
JPS63210386A (en) * 1987-02-26 1988-09-01 有限会社 スズキハウスシステム開発 Building member
JPH05171875A (en) * 1991-12-20 1993-07-09 Daiken Trade & Ind Co Ltd Glazed fitting and manufacturing method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0266797A2 (en) 1986-11-07 1988-05-11 Fuji Photo Film Co., Ltd. Method of processing silver halide color photographic material and photographic color developing composition
JPS63210386A (en) * 1987-02-26 1988-09-01 有限会社 スズキハウスシステム開発 Building member
JPH05171875A (en) * 1991-12-20 1993-07-09 Daiken Trade & Ind Co Ltd Glazed fitting and manufacturing method thereof

Also Published As

Publication number Publication date
JPH0476111B2 (en) 1992-12-02

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