JPS60100137A - Exposing device of copying machine - Google Patents

Abstract

PURPOSE:To dissolve shortage of light quantity at the time of an exposure, and to reduce a power consumption by reflecting a part of light to an original side by a reflecting means provided on a light source which is not turned on when a fluorescent lamp is turned on independently, in the light source consisting of two fluorescent lamps which are turned on independently or simultaneously. CONSTITUTION:Two light sources 3, 4 for irradiating an original A are provided on the lower side of a platen 2. The light source 3 is a fluorescent lamp which has mixed blue and green phosphors and produces blue light through a filter 5. The light source 4 is a fluorescent lamp which has mixed blue and red phosphors and produces blue light through the filter 5. When both the light sources are turned on, blue light of a sufficient light quantity can be produced. When producing light of other green light and red light, only one light source is turned on. Each light source 3, 4 is provided with a reflecting means in its circumference. In this way, when using only light of the light source 3, the reflecting means of the light source 4 is used so as to make up for the light for irradiating an original A. Also, when using light of only the light source 4, the reflecting means of the light source 3 is used.

Description

【発明の詳細な説明】 ７）で業上の利用分野 この発明はカラー原稿の複写が可能な複写機の１．・客
先装置１ｔに四する。DETAILED DESCRIPTION OF THE INVENTION 7) Field of Industrial Use This invention relates to a copying machine capable of copying color originals.・4 tons of customer equipment.

従来技術 従来カラー複写機の線光装置には光源として白色光のタ
ングステンランプまたは螢光灯を用すており、この光源
の白色光を３色の色分解フィルタで青、緑及び赤に色分
解して像１ａｆｒ光を行っている。しかしこの方法では
必要とする以外の光は全て色分解フィルタで吸収もしく
は反射されて損失となるため、光線の消費電力が大きい
不具合があった。Prior Art The line light device of conventional color copying machines uses a white light tungsten lamp or fluorescent lamp as a light source, and the white light from this light source is separated into blue, green, and red by three color separation filters. Then, the image 1afr light is carried out. However, in this method, all light other than the necessary light is absorbed or reflected by the color separation filter and becomes a loss, so there is a problem that the power consumption of the light beam is large.

かかる不具合を改善するものとして、Ｗの螢光体と緑の
螢光体を混合したケ１“ト光灯と１Ｔの螢光体と赤の螢
光体を混合した螢光灯の２本を光源とし、これら光源か
らの光を色分解フィルタで色分解して像露光を行う露光
装置トＬも保唱されているが、感光時は１本の螢光灯を
使用するため光量が不足し、所望の露光、１．ｉ、がイ
１ｔにくいなどの不具合があった。In order to improve this problem, two fluorescent lamps were used: a 1" light lamp that mixed W phosphor and green phosphor, and a fluorescent lamp that mixed 1T phosphor and red phosphor. Exposure equipment L is also advocated, which uses a light source and separates the light from these light sources with a color separation filter to perform image exposure, but since a single fluorescent lamp is used during exposure, the amount of light is insufficient. There were problems such as difficulty in obtaining the desired exposure.

発明の目的 この発明はかかる不具合を改’ｉ”；−ｊ−る目的でな
されたもので、消費７（Ｌカ少なく、かつ光量不足分生
じることのない複写様のＭ＜光装置１１を皆供しようと
するものである。Purpose of the Invention The present invention has been made for the purpose of rectifying the above-mentioned problems, and is intended to improve the optical device 11 for copying, which consumes less L and does not cause insufficient light quantity. This is what we are trying to provide.

発明の構成 螢光体の異なる２本の螢光灯により光源を構成し、これ
ら光源により複写すべき原稿を同時及び単独で露光する
と共に、各光源の近傍に反射手段を設けて、光源を単独
で点灯した揚台に。Structure of the Invention A light source is composed of two fluorescent lamps with different fluorescent materials, and the original to be copied is simultaneously and independently exposed to light by these light sources, and a reflecting means is provided near each light source to make the light source independent. On the platform that was lit.

点灯しない光源側の反射手段によシ光の一部を原稙側へ
反射して光景不足を補うようにした複写機の露光装置。An exposure device for a copying machine in which a part of the light is reflected to the primary side by a reflecting means on the side of the light source that is not lit, thereby compensating for the lack of visual field.

実施例 以下この発明の一実施例を図面を参照して詳述すると１
図において１は接写機本体で、上部に複写すべき原稿Ａ
を載置するプラテン２が設けられておシ、このプラテン
２の下側に、上記原稿人の複写面を照射する２本の光源
３．４が設置されている。上記各光源３．４の一部３は
青と緑の螢光体を混合した螢光灯で、第２図（イ）の曲
線Ａに示す特性を有しておシ、この光源３の近傍に設置
した第２図（−ｆ）の曲線αに示す特性を有するフィル
タ５を通すことによって、第２図Ｖｊの曲線Ｃに示す青
色の光が取出せるようになっている。また他方の光源４
は青と赤の螢光体を混合した螢光灯で、第２図（川の曲
線すに示す特性を有しており、上記フィルタ５を通すこ
とによシ、第２図Ｐ１０曲線Ｃに示す１′ｆ′色の光が
堆出せるようになっている。EXAMPLE Below, one example of the present invention will be described in detail with reference to the drawings.
In the figure, 1 is the main body of the close-up copying machine, and the document A to be copied is shown at the top.
A platen 2 is provided on which the document is placed, and two light sources 3.4 are installed below the platen 2 to illuminate the copy surface of the document. Part 3 of each of the light sources 3.4 above is a fluorescent lamp that is a mixture of blue and green fluorescent materials, and has the characteristics shown in curve A in Fig. 2 (a). By passing the blue light shown in the curve C in FIG. 2 (Vj) through the filter 5 installed in FIG. 2 and having the characteristics shown in the curve α in FIG. Also, the other light source 4
is a fluorescent lamp that is a mixture of blue and red fluorescent materials, and has the characteristics shown in Figure 2 (river curve). It is possible to emit light of color 1'f' as shown in FIG.

これによって両光源３．４を同時に点灯することによシ
十分な光量の−ｙ色光が取出せる。As a result, a sufficient amount of -y color light can be extracted by turning on both light sources 3.4 at the same time.

一方光源３よシ緑色の光を取出す場合、第３図（イＪの
曲線すに示す特性のフィルタ６へ光源３からの光を通す
ことにより槁３図（ロ）の曲ｋＪＪ　Ｃに示すような緑
色が得られるが、この場合光源３のみを点灯するため光
量が不足する。On the other hand, when extracting green light from the light source 3, the light from the light source 3 is passed through the filter 6 with the characteristics shown in the curve of Fig. A green color can be obtained, but in this case, only the light source 3 is turned on, so the amount of light is insufficient.

また光源４よシ赤色の光を取出す場合は、第４図（イｉ
の曲想すに示す特性のフィルタ６を通すことにより第４
図（ロ）の曲線ｃ’／Ｃボすような赤色光が得られるが
、この場合も光源４のみを点灯するため光ｌｉｔが不足
する。In addition, when extracting red light from light source 4, see Figure 4 (I).
The fourth filter is passed through a filter 6 with the characteristics shown in
Red light as shown by the curve c'/C in Figure (b) can be obtained, but in this case as well, only the light source 4 is turned on, so the light lit is insufficient.

そこでこの光量不足を補うため、光源３，４に次のよう
な反射手段７が設けられている。上記反射手段７は光源
３，４の周囲に回転自在に嵌挿された断面はぼＣ字形の
遮光部材８が設けられている。上記遮光部材ｇの切欠部
８σは各光源３．４の管壁内面に形成された螢光面３α
。In order to compensate for this lack of light quantity, the light sources 3 and 4 are provided with the following reflecting means 7. The reflecting means 7 is provided with a light shielding member 8 having a substantially C-shaped cross section and rotatably fitted around the light sources 3 and 4. The notch 8σ of the light shielding member g is a fluorescent surface 3α formed on the inner surface of the tube wall of each light source 3.4.
.

４αのない部分と一致するように設けられ、この切欠部
８αよシ出た光により原稿Ａが照明されるようになって
いると共に、上記遮光部材８の外周部には反射板１０が
固着されている。上記反射板１０は反射部が高輝アルミ
ニウムよシなる板材や高輝アルミニウムｒ！９　膜等に
より形成された千面幌で、光源３，４の畏手方向に細長
く形成されていて％鉢光部材８の切欠部８αより出た光
を次のようにして原イｎ　Ａ側へ反射する。The document A is illuminated by the light emitted from the notch 8α, and a reflection plate 10 is fixed to the outer periphery of the light shielding member 8. ing. The reflective plate 10 has a reflective portion made of a plate material made of high brightness aluminum or a high brightness aluminum r! 9 A thousand-sided canopy formed of a film or the like, which is elongated in the direction of the light sources 3 and 4, and directs the light emitted from the notch 8α of the light source 8 to the original A side as follows. reflect to.

すなわち上Ｈ，２光源３．４の両端は機枠１αより突設
されたプラテン）１ｂに回転自在に支承されたソケット
１１に嵌合されていて、ソケット１１とともに矢印方向
へ正逆回転できるようになっていると共に、ソケット１
１にはリンク１２を弁してルノイドなどのＦ！ＪＡ動源
１３が接続されていて、この駆動源１３によシ各光源３
゜４が次のように回転される。That is, both ends of the upper H, 2 light source 3.4 are fitted into sockets 11 rotatably supported by a platen (1b) protruding from the machine frame 1α, so that they can rotate forward and backward in the directions of the arrows together with the sockets 11. and socket 1
1, valve link 12 and F! of Lunoid etc. A JA drive source 13 is connected, and each light source 3 is connected to this drive source 13.
4 is rotated as follows.

いまプラテン２上のカラー原ｒｎから脚の光を取出す場
合、各光ｍ′３．４毎に設けた駆動源Ｉ３によシ各光源
３．４を１４５図に示す位置に回動し、光源３のみを点
灯する。これによって光源３よシ出た光はプラテン２上
の原Ｊ？、３　Ａを直接照明すると同時に一部は他方の
光源４　（１１！ｌ　Ｋ設けられた反射板１ｏによシ原
稿Ａ　１ｌｌｌｌへ反射されるため、露光位置での光量
は、直射光と反射光が合算されたものとなり、これ−に
ょシ十分な光ｍが得られるようになる。Now, when extracting the leg light from the color source rn on the platen 2, each light source 3.4 is rotated to the position shown in FIG. Only 3 lights up. As a result, the light emitted from light source 3 is the source J on platen 2? , 3 A is directly illuminated, and at the same time a portion of the light is reflected onto the original A 1llllll by the reflective plate 1o provided with the other light source 4 (11!l K), the amount of light at the exposure position is divided into direct light and reflected light. are added together, so that sufficient light m can be obtained.

また原稿人からの反射光は伏叔枚のミラー１５及び集光
レンズ１６によシ光ｒ６１７上を感光体１ｇへと導びか
れ、感光体１８を麹光すると共に、集光レンズ１６後方
の党略１７上には前述した２枚のフィルタ５．６が選択
的に挿入されるようになっている。In addition, the reflected light from the manuscript is guided by the mirror 15 and the condensing lens 16 onto the photoreceptor 1g on the light r617, and the light is irradiated on the photoconductor 18, and the light behind the condensing lens 16 is The two filters 5.6 mentioned above are selectively inserted onto the filter 17.

なお感光体１８の周辺には複写に必要な現像装置ｆＭ：
　Ｉ　９や給紙装置２０−転写装置２１．定唐装置２２
及びクリーニング装置１ｖ２３などが設けられているが
、これらの説明は省略する。A developing device fM necessary for copying is provided around the photoreceptor 18.
I 9, paper feed device 20-transfer device 21. Ding tang device 22
Although a cleaning device 1v23 and the like are provided, a description thereof will be omitted.

次に青色の光を取出す場合は各光源３．４を回転して遮
光部材８の切欠部８αを原稿Ａ側へ向け、各光源３．４
を同時に点灯する。これによって原ｉＡの露光位置及び
光＃３．４によシ直接照明されるため、十分な光量の青
色光が取出せると共に、赤色を取出す場合は、光源４が
直接原稿Ａを照射する位置に、そして光源３の反射板１
０が光源４からの光を原稿Ａ側へ反射する位置に夫々光
源３．４全回動する。これによって原稿人の露光位置は
光源４からの直接光と１反射板１０からの反射光により
照明されるため、十分な光（の赤色光が得られる。Next, when extracting blue light, rotate each light source 3.4 so that the notch 8α of the light shielding member 8 faces the original A side, and each light source 3.4
light up at the same time. As a result, the exposure position of the original iA and the light #3.4 are directly illuminated, so a sufficient amount of blue light can be extracted, and when red light is extracted, the light source 4 is placed at the position where the original A is directly irradiated. , and the reflector 1 of the light source 3
The light sources 3 and 4 are fully rotated to the position where the light source 4 reflects the light from the light source 4 toward the document A side. As a result, the exposure position of the document person is illuminated by the direct light from the light source 4 and the reflected light from the first reflecting plate 10, so that sufficient light (red light) can be obtained.

これによって青色、緑色及び赤色の３ＪＭ色が同一の光
量で色分解可能になる。This makes it possible to separate the 3JM colors of blue, green, and red with the same amount of light.

発明の効果 この発明は以上詳述したように螢光体の異なる２本の螢
光灯を光源として、これら光源を単独及び同時に点灯し
て原稿を照明すると共に、単独で点灯した場合は点灯し
ない光源に設けた反射手段によシ光の一部を原稿側へ反
射して元押′の増加を図るようにしたもので、照光時の
光量不足が解消できると共に、光源も２本でよいため消
費電力も少なくできる。Effects of the Invention As described in detail above, this invention uses two fluorescent lamps with different fluorescent materials as light sources, and illuminates a document by lighting these light sources singly or simultaneously, and does not light when they are turned on alone. A reflection means installed in the light source reflects a portion of the light toward the document side, increasing the amount of light emitted.This eliminates the lack of light intensity during illumination, and only requires two light sources. Power consumption can also be reduced.

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

図面はこの発明の一実施例を示し、第１図は全体的な概
略構成図、第２図（イ）ないしＮは青色の分解方法を示
す説明図、ｇ＋％　３図（イ１．（ロ）は緑色の分解方
法を示す説明図、　ａｔ嘗４図（イｌ　、　ｆ１′：Ｉ
＋は赤色の分解方法を示す説明図、第５図はこの装置の
断面図、第６図は同′ｆ＋親図、第７図は同地動部の詳
細図である。 ３．４は光源、７は反射手段、人は原稿。 出願人　富士ゼロックス株式会社 代理人　弁理士　米　原　止　草 弁理士　浜　本　忠 第　″［図 ■第２１￥１ 第　３１４ （イ）　（ロ） 第４区 （イ）　（ロ） 第５図 第７図The drawings show one embodiment of the present invention, and FIG. 1 is an overall schematic diagram, FIGS. ) is an explanatory diagram showing the method of decomposing green color.
+ is an explanatory diagram showing a red disassembly method, FIG. 5 is a cross-sectional view of this device, FIG. 6 is a main view of the device, and FIG. 7 is a detailed view of the ground motion part. 3.4 is a light source, 7 is a reflecting means, and a person is a manuscript. Applicant: Fuji Xerox Co., Ltd. Agent Patent Attorney: Tokusa Yonehara Patent Attorney: Tadashi Hamamoto'' [Fig. figure

Claims (1)

【特許請求の範囲】[Claims] 複写すべきカラー原稿Ａを複数本の光源３゜４により露
光してカラー複写を得るものにおいて、上記光源３，４
を螢光体の異なる２本の螢光灯により構成し、かつこれ
ら光源３，４を単独及び同時に点灯して複写すべき原稿
Ａを露光するようになすと共に、上記光源３．４を単独
で点灯した場合に１点灯しない光源３，４側に設けた反
射手段７により光の一部を原稿入側へ反射するようにし
てなる複写機の露光装置。In a method for obtaining a color copy by exposing a color original A to be copied using a plurality of light sources 3.4, the light sources 3, 4 are
consists of two fluorescent lamps with different fluorescent bodies, and these light sources 3 and 4 are turned on individually and simultaneously to expose the document A to be copied, and the light sources 3 and 4 are turned on independently and simultaneously. An exposure device for a copying machine configured to reflect part of the light toward the original input side by a reflecting means 7 provided on the side of the light sources 3 and 4, which are not lit when the light is turned on.