JPH0222948B2 - - Google Patents
Info
- Publication number
- JPH0222948B2 JPH0222948B2 JP58063709A JP6370983A JPH0222948B2 JP H0222948 B2 JPH0222948 B2 JP H0222948B2 JP 58063709 A JP58063709 A JP 58063709A JP 6370983 A JP6370983 A JP 6370983A JP H0222948 B2 JPH0222948 B2 JP H0222948B2
- Authority
- JP
- Japan
- Prior art keywords
- lamp
- light source
- original
- carriage
- light
- 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
Links
- 108091008695 photoreceptors Proteins 0.000 description 7
- 230000003595 spectral effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000003287 optical effect Effects 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
- G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
- G03G15/0105—Details of unit
- G03G15/011—Details of unit for exposing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Optical Systems Of Projection Type Copiers (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
この発明は異なる分光特性を有する複数個の光
源を用いて複写すべき原稿を走査露光するカラー
複写機の走査露光装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a scanning exposure device for a color copying machine that scans and exposes an original to be copied using a plurality of light sources having different spectral characteristics.
従来技術
従来各色毎に露光、現像及び転写を複数回繰返
すカラー複写機においては、第１図イに示す光源
にハロゲンランプを用いたもの及び第１図ロに示
す螢光灯を用いたものが知られている。第１図イ
に示すハロゲンランプａを用いたものでは、ハロ
ゲンランプａより出た光を反射鏡ｂ，ｃでプラテ
ンｄ上の原稿ｅへ導びき、原稿ｅからの反射光を
色分解フイルタｆを介して感光体（図示せず）へ
導びくようにしたもので、色分解フイルタｆは複
数枚用意されていて、これらを交互に使用するこ
とにより、第２図イに示すように各色を分解し
て、各色毎に感光体を露光している。Prior Art Conventionally, in color copying machines that repeat exposure, development, and transfer multiple times for each color, there are those that use a halogen lamp as the light source, as shown in Figure 1A, and those that use a fluorescent lamp as the light source, as shown in Figure 1B. Are known. In the device using a halogen lamp a shown in FIG. A plurality of color separation filters f are prepared, and by using them alternately, each color can be separated as shown in Figure 2A. It is separated and the photoreceptor is exposed for each color.
また第１図ロに示す螢光灯ｇを用いたものも、
螢光灯ｇによりプラテンｄ上の原稿ｅを照射し、
その反射光を複数枚の色分解フイルタｆを交互に
通過させて感光体に導びき感光体を露光してい
る。 Also, the one using the fluorescent lamp g shown in Figure 1B,
Illuminate the document e on the platen d with a fluorescent lamp g,
The reflected light is passed alternately through a plurality of color separation filters f and guided to the photoreceptor, thereby exposing the photoreceptor.
このような露光装置では白黒複写に比べて約３
倍の光量を必要とするため、ハロゲンランプａを
光源とした場合、ランプ消費量が大きく、その結
果複写機全体の消費電力を増大させる欠点があ
り、また螢光灯ｇを光源とした場合、光量が不足
するため、露光速度を遅くする必要があり、複写
速度の低下を招ねく欠点があつた。 With this kind of exposure equipment, compared to black and white copying, approximately 3
Since twice the amount of light is required, if the halogen lamp a is used as the light source, the lamp consumption will be large, resulting in an increase in the power consumption of the entire copying machine.Also, if the fluorescent lamp g is used as the light source, Since the amount of light is insufficient, it is necessary to slow down the exposure speed, which has the disadvantage of slowing down the copying speed.
発明の目的
この発明はかかる欠点を改善する目的でなされ
たもので、分光特性の異なる複数個の光源を交互
に用いて複写すべき原稿を走査露光するようにし
たカラー複写機の走査露光装置を提供して、消費
電力の低減と、複写速度の向上を図ろうとするも
のである。Purpose of the Invention The present invention has been made with the aim of improving the above drawbacks, and provides a scanning exposure device for a color copying machine that scans and exposes a document to be copied by alternately using a plurality of light sources with different spectral characteristics. The aim is to reduce power consumption and improve copying speed.
発明の構成
複写すべき原稿を載置したプラテンの下側に、
原稿の走査方向に移動自在にランプキヤリツジを
設け、このランプキヤリツジに分光特性の異なる
複数本の光源を束ねた状態で回転自在に取付け、
かつ上記ランプキヤリツジの往復毎に光源を回転
かつ点灯して、各光源により複写すべき原稿を走
査露光するようにしたカラー複写機の走査露光装
置である。Structure of the Invention On the underside of the platen on which the original to be copied is placed,
A lamp carriage is provided so as to be movable in the scanning direction of the original, and a plurality of light sources with different spectral characteristics are attached to the lamp carriage so as to be freely rotatable in a bundle.
The present invention is a scanning exposure device for a color copying machine, in which a light source is rotated and turned on each time the lamp carriage moves back and forth, and each light source scans and exposes an original to be copied.
実施例
以下この発明の一実施例を第３図以下に示す図
面を参照して詳述する。Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings shown in FIG. 3 and subsequent figures.
第３図はこの発明に使用する３個の光源１，
２，３の分光特性を示すもので、光源１はブルー
を主波長とする螢光灯、光源２はグリーンを主波
長とする螢光灯、そして光源３はレツドを主波長
とする螢光灯よりなり、これら光源１，２，３は
第４図に示すようにプラテン４の下側に次のよう
な配置で設けられている。すなわち７はランプキ
ヤリツジで、複写すべき原稿５を載置したプラテ
ン４の下方に、上記原稿５の走査方向に沿つて布
設されたレール６上に移動自在に設けられ、この
ランプキヤリツジ７に軸受け２１を介してランプ
支持体２２の回転軸２２ａが支承されている。上
記支持体２２を円板状をなしていて、互に間隔を
存して設けられ、これらランプ支持体２２間に上
記光源１，２，３が取付けられている。これら光
源１，２，３は回転軸２２ａの中心Ｏを中心とす
る円周上に等間隔に配置されていて、回転軸２２
ａに取付けられた歯車２３が、ステツプモータよ
りなる回転駆動源２４に設けられた歯車２５に噛
合され、上記回転駆動源２４によりランプ支持体
２２を介して各光源１，２，３が間欠的に回転さ
れるようになつている。 Figure 3 shows three light sources 1,
Light source 1 is a fluorescent lamp whose main wavelength is blue, light source 2 is a fluorescent lamp whose main wavelength is green, and light source 3 is a fluorescent lamp whose main wavelength is red. As shown in FIG. 4, these light sources 1, 2, and 3 are provided below the platen 4 in the following arrangement. That is, 7 is a lamp carriage, which is movably provided on a rail 6 laid along the scanning direction of the original 5 below the platen 4 on which the original 5 to be copied is placed. A rotating shaft 22a of the lamp support 22 is supported through a bearing 21. The supports 22 are disk-shaped and spaced apart from each other, and the light sources 1, 2, and 3 are installed between these lamp supports 22. These light sources 1, 2, and 3 are arranged at equal intervals on a circumference centered on the center O of the rotation axis 22a.
A gear 23 attached to a is meshed with a gear 25 provided on a rotary drive source 24 consisting of a step motor, and the rotary drive source 24 intermittently powers each of the light sources 1, 2, and 3 through the lamp support 22. It is now being rotated.
また上記ランプキヤリツジ７はワイヤ８を介し
て図示しないキヤリツジ駆動系に接続され、この
キヤリツジ駆動系によりレール６に沿つて次のよ
うに往復動される。 Further, the lamp carriage 7 is connected to a carriage drive system (not shown) via a wire 8, and is reciprocated along the rail 6 by this carriage drive system in the following manner.
複写開始時にはブルーの主波長を有する光源１
が第４図に示すように複写すべき原稿５と対面す
る位置にあつて、複写開始と同時にこの光源１に
より原稿５が照射される。原稿５からの反射光は
ランプキヤリツジ７上に設けられた第１ミラ１１
により第２ミラ１２側へ屈折される。第２ミラ１
２は第１ミラ１１のランプキヤリツジの1/2の速
度で同方向に移動するミラキヤリツジ１３に第３
ミラ１４とともに取付けられていて、第１ミラ１
１からの反射光は第２、第３ミラ１３，１４によ
りレンズ１５方向へ屈折される。レンズ１５に達
した光はこれを透過して固定ミラ１６に達し、固
定ミラ１６により感光体１７側に屈折されて、感
光体１７の表面がブルーを主波長とする光源１か
らの光により露光される。感光体１７の表面に形
成された静電潜像は現像工程を経て用紙に転写さ
れると共に、リターンエンドに達したランプキヤ
リツジ７は往路より早い速度でホームポジシヨン
９へ復帰する。その間に回転駆動源２４によりラ
ンプ支持体２２が120゜回転され、ランプキヤリツ
ジ７がホームポジシヨン９に達した時点で、グリ
ーンを主波長とする光源２が原稿５と対面する位
置に停止される。その後再びキヤリツジ駆動系に
よりランプキヤリツジ７が往路方向へ移動され
て、光源２により原稿５の走査露光が行なわれ
る。原稿５からの反射光は１回目の露光と同様第
１ミラ１１及び感光体１７を結ぶ光路２０上を感
光体１７へと進み、グリーンを主波長とする光源
２から反射光により感光体１７が露光される。こ
の露光によつて形成された静電潜像は現像工程を
経て、第１回目の工程で転写された用紙に再び転
写されると共に、リターンエンドに達したランプ
キヤリツジ７は往路より早い速度でホームポジシ
ヨン９へ復帰し、その間に回転駆動源２４により
ランプ支持体２２が120゜回転されて、ランプキヤ
リツジ７がホームポジシヨン９に達した時点で、
レツドを主波長とする光源３が原稿５と対面する
位置となる。その後再びランプキヤリツジ７が往
路方向へ移動されて、光源３により３回目の走査
露光が行なわれ、第１、第２回目と同様に感光体
１７に静電潜像が形成されると共に、この像は現
像された後、第１、第２回目に転写された用紙に
転写されている。またリターンエンドに達したラ
ンプキヤリツジ７は往路より早い速度でホームポ
ジシヨン９へ復帰され、１複写サイクルが終了す
ると共に、１枚のカラー複写が得られるようにな
る。 At the start of copying, light source 1 having a blue dominant wavelength
As shown in FIG. 4, the light source 1 is located at a position facing the original 5 to be copied, and the original 5 is illuminated by this light source 1 at the same time as copying starts. The reflected light from the original 5 is reflected by the first mirror 11 provided on the lamp carriage 7.
is refracted toward the second mirror 12. 2nd Mira 1
2 is the third mirror carriage 13 moving in the same direction at 1/2 the speed of the first mirror 11 lamp carriage.
It is installed together with Mira 14, and the first Mira 1
The reflected light from the mirror 1 is refracted toward the lens 15 by the second and third mirrors 13 and 14. The light that has reached the lens 15 passes through it and reaches the fixed mirror 16, where it is refracted toward the photoreceptor 17, and the surface of the photoreceptor 17 is exposed to light from the light source 1 whose main wavelength is blue. be done. The electrostatic latent image formed on the surface of the photoreceptor 17 is transferred to the paper through a developing process, and the lamp carriage 7, which has reached the return end, returns to the home position 9 at a faster speed than the forward path. During this time, the lamp support 22 is rotated by 120 degrees by the rotary drive source 24, and when the lamp carriage 7 reaches the home position 9, the light source 2 whose main wavelength is green is stopped at a position facing the original 5. Ru. Thereafter, the lamp carriage 7 is again moved in the forward direction by the carriage drive system, and the original 5 is scanned and exposed by the light source 2. The reflected light from the original 5 travels to the photoconductor 17 on the optical path 20 connecting the first mirror 11 and the photoconductor 17, as in the first exposure, and the photoconductor 17 is illuminated by the reflected light from the light source 2 whose main wavelength is green. exposed to light. The electrostatic latent image formed by this exposure goes through a developing process and is transferred again to the paper that was transferred in the first process, and the lamp carriage 7 reaches the return end at a faster speed than the forward path. When the lamp carrier 7 returns to the home position 9, during which the lamp support 22 is rotated by 120 degrees by the rotary drive source 24, and the lamp carriage 7 reaches the home position 9,
A light source 3 whose main wavelength is red is at a position facing the original 5. Thereafter, the lamp carriage 7 is moved in the forward direction again, and the light source 3 performs a third scanning exposure, and an electrostatic latent image is formed on the photoreceptor 17 as in the first and second exposures. After the image is developed, it is transferred to the paper to which it was transferred the first and second time. Further, the lamp carriage 7 that has reached the return end is returned to the home position 9 at a faster speed than on the forward journey, and one copy cycle is completed, and one color copy can be obtained.
発明の効果
この発明は以上詳述したように分光特性の異な
る複数個の光源を、複写すべき原稿の走査毎に回
転させて、各光源により原稿を走査露光するよう
にしたことから、従来のハロゲンランプを光源と
したものに比べて消費電力をほぼ1/3に低減でき
ると共に、白色螢光灯を光源としたものに比べて
複写速度を格段に向上させることができる。しか
も複数枚の分光フイルタを切換えて使用する必要
がないことから装置の簡略化も図れるようにな
る。Effects of the Invention As described in detail above, this invention rotates a plurality of light sources with different spectral characteristics each time an original to be copied is scanned, and each light source scans and exposes the original. Power consumption can be reduced to approximately 1/3 compared to those using a halogen lamp as the light source, and copying speed can be significantly improved compared to those using a white fluorescent lamp as the light source. Furthermore, since there is no need to switch between multiple spectral filters, the apparatus can be simplified.
第１図イ，ロは従来の走査露光装置の説明図、
第２図イ，ロは同分光特性を示す説明図、第３図
はこの発明の一実施例に使用した光源の主波長を
示す線図、第４図は同走査露光装置の構成図、第
５図は光源回転部の詳細図である。
１，２，３は光源、４はプラテン、５は原稿、
７はランプキヤリツジ。
Figures 1A and 1B are explanatory diagrams of a conventional scanning exposure device;
Figures 2A and 2B are explanatory diagrams showing the same spectral characteristics, Figure 3 is a diagram showing the dominant wavelength of the light source used in an embodiment of the present invention, Figure 4 is a configuration diagram of the scanning exposure apparatus, FIG. 5 is a detailed diagram of the light source rotating section. 1, 2, 3 are light sources, 4 is a platen, 5 is a document,
7 is a lamp carrier.
Claims (1)
方に、原稿５の走査方向に移動自在にランプキヤ
リツジ７を設け、このランプキヤリツジ７に分光
特性の異なる複数本の光源１，２，３を束ねた状
態で取付け、かつこれら光源１，２，３を上記ラ
ンプキヤリツジ７の往復毎に回転させて点灯し、
各光源１，２，３により複写すべき原稿５を走査
露光してなるカラー複写機の走査露光装置。1. A lamp carriage 7 is provided below the platen 4 on which the original 5 to be copied is placed, and is movable in the scanning direction of the original 5. 3 are attached in a bundle, and these light sources 1, 2, and 3 are turned and lit each time the lamp carriage 7 goes back and forth,
A scanning exposure device for a color copying machine that scans and exposes an original 5 to be copied using each light source 1, 2, and 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58063709A JPS59189365A (en) | 1983-04-13 | 1983-04-13 | Scanning exposure device of color copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58063709A JPS59189365A (en) | 1983-04-13 | 1983-04-13 | Scanning exposure device of color copying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59189365A JPS59189365A (en) | 1984-10-26 |
| JPH0222948B2 true JPH0222948B2 (en) | 1990-05-22 |
Family
ID=13237170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58063709A Granted JPS59189365A (en) | 1983-04-13 | 1983-04-13 | Scanning exposure device of color copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59189365A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4924269A (en) * | 1987-10-28 | 1990-05-08 | Minolta Camera Kabushiki Kaisha | Original illuminating apparatus |
-
1983
- 1983-04-13 JP JP58063709A patent/JPS59189365A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59189365A (en) | 1984-10-26 |
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