JPS6324264A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPS6324264A JPS6324264A JP16891286A JP16891286A JPS6324264A JP S6324264 A JPS6324264 A JP S6324264A JP 16891286 A JP16891286 A JP 16891286A JP 16891286 A JP16891286 A JP 16891286A JP S6324264 A JPS6324264 A JP S6324264A
- Authority
- JP
- Japan
- Prior art keywords
- red
- reproducibility
- blue
- light
- light sources
- 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
- 108091008695 photoreceptors Proteins 0.000 claims description 23
- 230000001678 irradiating effect Effects 0.000 claims 1
- 108010043121 Green Fluorescent Proteins Proteins 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- CUFNKYGDVFVPHO-UHFFFAOYSA-N azulene Chemical compound C1=CC=CC2=CC=CC2=C1 CUFNKYGDVFVPHO-UHFFFAOYSA-N 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 239000000049 pigment Substances 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Abstract
Description
【発明の詳細な説明】
[発明の利用分野]
本発明は電子写真感光体を用いた画像形成装置に関し、
詳しくは光源に2以上の特定の螢光灯等を使用したこと
を特徴とする画像形成装置に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an image forming apparatus using an electrophotographic photoreceptor;
More specifically, the present invention relates to an image forming apparatus characterized in that two or more specific fluorescent lamps or the like are used as a light source.
[発明の背景]
従来、電子写真複写装置に代表される画像形成装置の光
源は、ハロゲンランプ、キセノンランプ螢光灯等を使用
しているものが多く、列えば可視領域特に黄色領域に吸
収ピークのある電子写真感光体(以下単に感光体という
)は、大体において赤色原稿、′#色原稿に対する再現
性は良好であり、光源にフィルターなどを用いる必要性
はないが、吸収ピークが赤又は赤外側か、青又は紫外側
にある感光体の場合(mJえばアズレン系感光体やトリ
スアゾ顔料を用いた感光体)、光源に何らかの処理を施
さないと赤色原稿又は青色原稿の再現性が悪くなってし
まうことが知られている、特に光源の発光分布が広い領
域にわたっているハロゲンランプ、ヒユーズランプ、キ
セノンランプ等は光源に何らかの処理(例えばフィルタ
ーを用いる等)を行なわないと、前述の様な感光体を色
再現性よく使用することはできない。[Background of the Invention] Conventionally, many of the light sources of image forming apparatuses such as electrophotographic copying apparatuses use halogen lamps, xenon lamps, fluorescent lamps, etc., and these have absorption peaks in the visible region, especially in the yellow region. Certain electrophotographic photoreceptors (hereinafter simply referred to as photoreceptors) generally have good reproducibility for red originals and '# color originals, and there is no need to use a filter as a light source, but the absorption peak is red or red. In the case of a photoconductor located outside, blue or ultraviolet (for example, an azulene photoconductor or a photoconductor using trisazo pigment), the reproducibility of red or blue documents will deteriorate unless some treatment is applied to the light source. Halogen lamps, fuse lamps, xenon lamps, etc., which are known to be stored away, especially those whose light source has a wide emission distribution over a wide area, must undergo some kind of treatment (for example, using a filter) for the light source, otherwise the photoreceptor as mentioned above will The color reproducibility cannot be used well.
ところで、光源の発光分布がせまいし1]えは螢光灯の
様な光源では、その発光分布の波長を適度に選択するこ
とによって、感光体の分光感度によらず、赤、青の再現
性を良くすることがある程度可能であるが、しかし現存
の白色蛍光灯では、肯°側にかなりの発光強度を持つも
のが多く背側に吸収ピークのある顔料又は染料を用いて
作製した感光体の場合は青色再現性が悪く、また、グリ
ーン。By the way, with a light source such as a fluorescent lamp, which has a narrow emission distribution, by appropriately selecting the wavelength of the emission distribution, the reproducibility of red and blue can be improved regardless of the spectral sensitivity of the photoreceptor. However, many existing white fluorescent lamps have a considerable emission intensity on the positive side, and it is difficult to use photoreceptors made with pigments or dyes that have an absorption peak on the back side. If the reproducibility of blue is poor, it is also green.
ピンク等の単色光では、その発光色の色あいをもつ原稿
はほとんど再現されないという欠点をもつため、その′
1までは実用に供し得る画像形成装置の構成は難かしい
点が多い。Monochromatic light such as pink has the disadvantage that originals with the hue of that emitted color are hardly reproduced.
Up to No. 1, there are many difficulties in constructing an image forming apparatus that can be put to practical use.
[発明の目的]
本発明は以上の観点からなされたものであシ、その目的
は、前述したように例えば赤ないし赤外、又は宵ないし
紫外に吸収ピークをもつ電子写真感光体を用いた画像形
成装置において、赤色原稿から青色原稿に渡って良好な
再現性を得ることができる像露光のための光源を有した
画像形成装置を提供するところにある。[Object of the Invention] The present invention has been made from the above-mentioned viewpoint, and its object is, as mentioned above, to produce an image using an electrophotographic photoreceptor having an absorption peak in the red to infrared, or in the evening to ultraviolet. An object of the present invention is to provide an image forming apparatus having a light source for image exposure that can obtain good reproducibility from a red original to a blue original.
また本発明の別の目的は、例えば赤色原稿から青色原稿
に渡って良好な色再現性をもたせつつ、その装置を使用
する目的によって、色再現性を任意に選択できる画像形
成装置を提供するところにある。Another object of the present invention is to provide an image forming apparatus that can arbitrarily select color reproducibility depending on the purpose for which the apparatus is used, while maintaining good color reproducibility from, for example, a red original to a blue original. It is in.
[発明の概要]
而してかかる目的の実現のためになされた本発明よりな
る画像形成装置の特徴は、原稿を光源から照射される光
により走査し、この走査光を感光体上に照射することに
よシ感光体上に原稿1尿に対応した潜像を形成する電子
写真装置において、上記光源は少くとも2つ設けられ、
この2つの光源の発光ピーク波長が異なる構成としたと
ころにある。[Summary of the Invention] The image forming apparatus according to the present invention, which has been made to achieve the above object, is characterized by scanning an original with light emitted from a light source, and emitting this scanning light onto a photoreceptor. Particularly in an electrophotographic apparatus that forms a latent image corresponding to a document on a photoreceptor, at least two light sources are provided,
The reason for this is that the two light sources have different emission peak wavelengths.
本発明において対象とされる電子写真感光体は、具体的
には、アズレン系感光体、トリスアゾ顔料を用いた感光
体等の積層型あるいは単層型のものを例示することがで
きるが、特にこれらに限定されるものではない。Specific examples of electrophotographic photoreceptors to which the present invention is applied include laminated or single-layer types such as azulene photoreceptors and photoreceptors using trisazo pigments. It is not limited to.
本発明においての画像形成袋mlとは、返子写其複写機
、液晶プリンター、オフセット印刷機、等全例示するこ
とができる。The image forming bag ml in the present invention includes all examples such as a copying machine, a liquid crystal printer, and an offset printing machine.
本発明は飼えば、赤ないし赤外、又は青ないし紫外に吸
収ピークをもつ感光体に対し、組会せにより光源全構成
する蛍光灯等の一方の発光ピークを波長550nm以下
、他方の発光ピークを波長600nm以上とすることで
構成される。550nm以下の蛍光灯は著しく赤再現性
が良< 600 nm以上の蛍光灯は著しく青再現性が
良い為である。In the present invention, for a photoreceptor that has an absorption peak in red to infrared or blue to ultraviolet, one emission peak of a fluorescent lamp, etc. that makes up the entire light source can be set to a wavelength of 550 nm or less, and the other emission peak can be adjusted to is configured by setting the wavelength to 600 nm or more. This is because fluorescent lamps with a wavelength of 550 nm or less have extremely good red reproducibility. Fluorescent lamps with a wavelength of 600 nm or more have extremely good blue reproducibility.
550nm以上又は600nm以下の蛍光灯等を用いる
と肯又は赤の再現性が低下するので組み合せに用いるも
のとして適当ではない。If a fluorescent lamp or the like having a wavelength of 550 nm or more or 600 nm or less is used, the reproducibility of red or red will deteriorate, so it is not suitable for use in combination.
前記した蛍光灯の組合せによればフィルター等を使用す
ることなく青、赤の原稿の再現性を得ることが可能とな
るので特に好ましい。組合せて使用される蛍光灯等の光
源は、2本に限定されることなく必要光景の確保等の目
的に合わせて適宜の本数を用いればよく、例えば、高速
機の様に光量を多く必要とする機誠は同種の蛍光灯を数
本組みあわせても良いし、白色蛍光灯を一部組み合わせ
てもよい。The above-mentioned combination of fluorescent lamps is particularly preferable because it is possible to obtain the reproducibility of blue and red originals without using a filter or the like. The number of light sources such as fluorescent lamps used in combination is not limited to two, but may be used in an appropriate number depending on the purpose such as securing the necessary view.For example, when a high-speed aircraft requires a large amount of light, The lighting may be done by combining several fluorescent lamps of the same type, or by combining some white fluorescent lamps.
[発明の実施例コ
以下本発明の実施列を図面に示す実施列に基づいて更に
説明する。[Embodiments of the Invention] Hereinafter, embodiments of the present invention will be further explained based on embodiments shown in the drawings.
第1図は本発明の構成概要−例を示した図でろり、図に
おいて、1は原稿面を示し、集光し/ズ4を通して感光
体(図ではドラム型)5の表面に像を投影する光軸6の
両側に、一対をなすようにして蛍光灯2.3が配置され
ている。7,8はこれら各蛍光灯2.3の光量を調整す
るための光量調整用反射板である。FIG. 1 is a diagram showing an example of the configuration of the present invention. In the figure, 1 indicates the document surface, and an image is projected onto the surface of a photoreceptor (drum-shaped in the figure) 5 through a condensing lens 4. A pair of fluorescent lamps 2.3 are arranged on both sides of the optical axis 6. Reference numerals 7 and 8 are light intensity adjusting reflector plates for adjusting the light intensity of each of these fluorescent lamps 2.3.
以上のような構成概要を有する画像形成装置全、キャノ
ン(株)成製PC−20型複写機をベースにして改造し
、一方の蛍光灯2を540nmに発光ピークをもつ緑色
螢光灯、蛍光灯3全620nmに発光ピークをもつ赤色
螢光灯として夫々15Wで点灯させ、種々の色画像を有
する原稿の再現性について測定した。なお使用した感光
体5は、第2図に示す分光感度(感度は400V帯電し
た電位を200Vに要するエネルギーの逆数)を有する
ものを用いた。この感光体は、赤色螢光灯又は緑色螢光
灯だけを光源として潜像を形成させた場合には、蛍光灯
の発光波長の色は再現する事ができないものであり、実
際に緑色螢光灯だけに用いて画像を取ると赤の再現性す
こぶる良いが青色の原稿(セクションペーパーなど)は
ほとんど再現せず、また同様に赤色蛍光灯だけを用いて
も青色の褥現は良くなるが赤色の再現性はなくなってし
まうことが確認されている。The entire image forming apparatus having the above-mentioned configuration was modified based on a Canon Co., Ltd. PC-20 copying machine, and one of the fluorescent lamps 2 was replaced with a green fluorescent lamp with an emission peak at 540 nm. Lamp 3 was turned on as a red fluorescent lamp having an emission peak at 620 nm at a power of 15 W, and the reproducibility of originals having various color images was measured. The photoreceptor 5 used had the spectral sensitivity shown in FIG. 2 (sensitivity is the reciprocal of the energy required to convert a charged potential of 400 V to 200 V). If a latent image is formed on this photoreceptor using only a red or green fluorescent lamp as a light source, it is impossible to reproduce the color of the fluorescent lamp's emission wavelength; If you take an image using only a red fluorescent light, the reproducibility of red is very good, but blue manuscripts (section papers, etc.) are hardly reproduced, and similarly, if you use only red fluorescent light, the reproduction of blue color is good, but the red color is very good. It has been confirmed that the reproducibility of is lost.
前記改造した複写機を用い、濃度0.3のベタ黒原稿を
0.5の濃度にコ♂−できる現像バイアスの設定を適正
とする赤色及び緑色のピーク波長の発光強度が同じにな
る様に第1図の反射板7,8を用いて調整した2つの光
源の重ね合せ光を像露光として用い、赤原稿、及び宵原
稿を夫々複写したところ、赤、又は緑色螢光灯を単品で
用いた場合の如く赤、青、どちらかの色が出ないという
ことはなく、どちらの色原稿も良好に再現された。実際
に0.3の濃度の赤色原稿及び青色原稿を各々の光源で
複写した時のコピー偵度の測定結果を下記表(1)に示
す。Using the above-mentioned modified copying machine, a solid black original with a density of 0.3 can be copied to a density of 0.5.The development bias setting is appropriate.The emission intensity of the red and green peak wavelengths is the same. When the red original and the evening original were each copied using the superimposed light of the two light sources adjusted using the reflectors 7 and 8 in Fig. 1 as image exposure, it was found that the red or green fluorescent lamp was used individually. There was no case where one of the colors, red or blue, was missing, as was the case with the originals, and originals of either color were reproduced well. Table (1) below shows the measurement results of the copy accuracy when a red original and a blue original with a density of 0.3 were actually copied using each light source.
表(1)
<1!41rin−=rクヘスRD−514濃度測定器
使用)なお、前記実施例においては、螢光灯の光fk赤
、青の再現性を感光体の分光感度に依存することなく任
意に選ぶようにしてもよく、このためにはFyIJえは
第1図の7.8に示した反射板の傾きを変える事により
行うことができる。又、かがる光量選択の他の方法は、
光源の前部の露光スl) ノドの巾を調節し7′icジ
、光源の底流を可変とすることでも可能である。前述の
改造複写機で実際亦及び緑の螢光灯の発光比率を種々に
配分した場合の赤原稿、!原稿のコピー濃度?測定した
結果は、第3図に示され九通ジであシ、赤、縁壁光灯の
光量配分を変化させる事にょシ赤、宵どちらかの色原稿
のみを任意に再現させることも可能であることが理解さ
れよう。Table (1) <1!41rin-=rKuhes RD-514 density meter used) In the above embodiment, the reproducibility of the fluorescent light fk red and blue depends on the spectral sensitivity of the photoreceptor. For this purpose, FyIJ can be performed by changing the inclination of the reflector shown in 7.8 of FIG. In addition, another method for selecting the amount of light for dimming is:
It is also possible to make the undercurrent of the light source variable by adjusting the width of the gutter in front of the light source. A red original when the light emitting ratio of the actual and green fluorescent lamps is distributed in various ways using the above-mentioned modified copying machine! Original copy density? The measurement results are shown in Figure 3. By changing the light intensity distribution of the nine-way, red, and edge wall lights, it is also possible to arbitrarily reproduce only the original color of either red or evening. It will be understood that
[発明の効果コ
以上説明した様に本発明によれば電子写真感光体を用い
た画像形成装置におりで、発光波長が異なる2つの光源
を用いることによって、赤原稿、青原稿の再現性を良く
することができ、その上2つの光源の光量配分を任意に
変える事によって、赤、青原稿の再現性を任意に選ぶ事
も可能になる々どの効果がちシ、その有用性は犬なるも
のである。[Effects of the Invention] As explained above, according to the present invention, the reproducibility of red and blue originals can be improved by using two light sources with different emission wavelengths in an image forming apparatus using an electrophotographic photoreceptor. Furthermore, by arbitrarily changing the light intensity distribution of the two light sources, it is also possible to arbitrarily select the reproducibility of red and blue originals. It is.
図面第1図は本発明よりなる画像形成装置の構成概要−
例である複写機の一部を示す図、第2図は同複写機に用
いたドラム型感光体の感光感度特性を示す図、第3図は
色原稿に対して光源光量の赤、青分配比を変化させたと
きのコピー濃度を示した図である。
に原稿面 2:緑色螢光灯
3:赤色螢光灯 4:来光レンズ
5:電子写真感光体(感光体)
6:光軸 7,8二反射板
本多小平
□−−−1
岸 1) 正 行
新部興治
谷 浩太部FIG. 1 shows an outline of the configuration of an image forming apparatus according to the present invention.
A diagram showing a part of an example copying machine, Figure 2 is a diagram showing the photosensitivity characteristics of the drum-type photoreceptor used in the same copying machine, and Figure 3 is a diagram showing the red and blue distribution of the light source light intensity for color originals. FIG. 7 is a diagram showing copy density when changing the ratio. 2: Green fluorescent lamp 3: Red fluorescent lamp 4: Light receiving lens 5: Electrophotographic photoreceptor (photoreceptor) 6: Optical axis 7, 8 Two reflectors Honda Kodaira --- 1 Shore 1 ) Tadashi Yukishinbu Kojitani Kotabe
Claims (1)
光を感光体上に照射することにより感光体上に原稿像に
対応した潜像を形成する電子写真装置において、 上記光源は少くとも2つ設けられ、この2つの光源の発
光ピーク波長が異なることを特徴とする画像形成装置。[Scope of Claims] An electrophotographic apparatus that scans an original with light emitted from a light source and forms a latent image corresponding to the image of the original on the photoreceptor by irradiating the scanning light onto the photoreceptor. An image forming apparatus characterized in that at least two light sources are provided, and the two light sources have different emission peak wavelengths.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16891286A JPS6324264A (en) | 1986-07-17 | 1986-07-17 | Image forming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16891286A JPS6324264A (en) | 1986-07-17 | 1986-07-17 | Image forming device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6324264A true JPS6324264A (en) | 1988-02-01 |
Family
ID=15876865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16891286A Pending JPS6324264A (en) | 1986-07-17 | 1986-07-17 | Image forming device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6324264A (en) |
-
1986
- 1986-07-17 JP JP16891286A patent/JPS6324264A/en active Pending
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