JPH05313092A - Image reading/writing device - Google Patents
Image reading/writing deviceInfo
- Publication number
- JPH05313092A JPH05313092A JP12025492A JP12025492A JPH05313092A JP H05313092 A JPH05313092 A JP H05313092A JP 12025492 A JP12025492 A JP 12025492A JP 12025492 A JP12025492 A JP 12025492A JP H05313092 A JPH05313092 A JP H05313092A
- Authority
- JP
- Japan
- Prior art keywords
- led array
- light
- reading sensor
- reading
- led
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
- B41J2/447—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources
- B41J2/45—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources using light-emitting diode [LED] or laser arrays
- B41J2/451—Special optical means therefor, e.g. lenses, mirrors, focusing means
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Printers Characterized By Their Purpose (AREA)
- Dot-Matrix Printers And Others (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、画像読取・書込装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading / writing device.
【０００２】[0002]
【従来の技術】従来、電子写真方式の印刷装置において
は、光源としてレーザ、ＬＥＤ素子、液晶素子等を使用
しており、帯電器によって一様に帯電させられた感光体
ドラムが前記光源によって照射されて露光され、静電潜
像が形成されるようになっている。該静電潜像は、その
後現像器によって現像されてトナー像となり、該トナー
像は転写器によって用紙に転写され、定着器によって定
着される。2. Description of the Related Art Conventionally, in an electrophotographic printing apparatus, a laser, an LED element, a liquid crystal element, etc. have been used as a light source, and a photosensitive drum uniformly charged by a charger is irradiated by the light source. It is exposed to light and an electrostatic latent image is formed. The electrostatic latent image is then developed by a developing device to become a toner image, and the toner image is transferred to a sheet by a transfer device and fixed by a fixing device.
【０００３】前記印刷装置のうちＬＥＤプリンタ（電子
写真学会誌第２４巻第２号（１９８５年）Ｐ．３１〜
Ｐ．３６参照）は光源としてＬＥＤ素子を使用してい
る。図２は従来のＬＥＤプリンタの概略図である。図に
おいて、１１は感光体ドラム、１２は該感光体ドラム１
１を帯電させる帯電器、１３は感光体ドラム１１を露光
し、静電潜像を形成するＬＥＤアレイヘッド、１４は感
光体ドラム１１上の静電潜像を現像してトナー像を形成
する現像器、１５はトナー像を用紙１６に転写する転写
器、１７は転写されたトナー像を定着する定着器、１８
は感光体ドラム１１上に残留したトナーを除去する清掃
器、１９は感光体ドラム１１上に残留した電荷を除去す
る除電ランプ、２０は用紙カセット、２１は用紙スタッ
カである。Among the above-mentioned printing devices, LED printers (Journal of the Electrophotographic Society, Vol. 24, No. 2 (1985), P. 31-)
P. 36) uses an LED element as a light source. FIG. 2 is a schematic diagram of a conventional LED printer. In the figure, 11 is a photosensitive drum, and 12 is the photosensitive drum 1.
1 is a charger for charging 1; 13 is an LED array head for exposing the photosensitive drum 11 to form an electrostatic latent image; 14 is a developing for developing the electrostatic latent image on the photosensitive drum 11 to form a toner image A device, 15 is a transfer device for transferring the toner image onto the paper 16, 17 is a fixing device for fixing the transferred toner image, 18
Is a cleaner for removing the toner remaining on the photoconductor drum 11, 19 is a discharge lamp for removing the electric charge remaining on the photoconductor drum 11, 20 is a paper cassette, and 21 is a paper stacker.
【０００４】前記ＬＥＤアレイヘッド１３のＬＥＤ素子
が選択的に１発光動作を行うと、帯電器１２によって一
様に帯電された感光体ドラム１１上に静電潜像が形成さ
れ、該静電潜像に応じてトナーが現像器１４から感光体
ドラム１１に付着する。一方、用紙カセット２０から給
紙された用紙１６は、感光体ドラム１１と転写器１５間
を通過する。この時、感光体ドラム１１に付着したトナ
ーが転写器１５によって用紙１６に転写され、その後、
定着器１７によって定着されて用紙スタッカ２１に収納
される。When the LED elements of the LED array head 13 selectively perform one light emission operation, an electrostatic latent image is formed on the photoconductor drum 11 uniformly charged by the charger 12, and the electrostatic latent image is formed. Toner adheres to the photoconductor drum 11 from the developing device 14 according to the image. On the other hand, the paper 16 fed from the paper cassette 20 passes between the photoconductor drum 11 and the transfer device 15. At this time, the toner attached to the photosensitive drum 11 is transferred to the paper 16 by the transfer device 15, and then,
The sheet is fixed by the fixing device 17 and stored in the sheet stacker 21.
【０００５】一方、感光体ドラム１１においては清掃器
１８が感光体ドラム１１上に残留しているトナーを除去
し、また、除電ランプ１９が前の電子写真プロセスで形
成された静電潜像を除去して、次の帯電プロセス以降の
各プロセスに備える。なお、感光体ドラム１１を等速回
転させるための駆動手段及び給紙用の駆動手段としては
ＤＣモータ又はＡＣモータが用いられる。On the other hand, in the photoconductor drum 11, the cleaner 18 removes the toner remaining on the photoconductor drum 11, and the charge eliminating lamp 19 removes the electrostatic latent image formed in the previous electrophotographic process. It is removed and prepared for each process after the next charging process. A DC motor or an AC motor is used as a driving unit for rotating the photosensitive drum 11 at a constant speed and a driving unit for feeding paper.
【０００６】図３は従来の画像読取装置の概略図であ
る。図において、３１は原稿、３２は集束レンズアレ
イ、３３はサブストレート（基板）、３４は該サブスト
レート３３に支持されるＣＣＤ、アモルファスシリコン
ａ−Ｓｉ等の読取センサ、３５は照明ランプ、３６は遮
光板である。前記原稿３１は図示されない原稿走行部に
よって集束レンズアレイ３２の上を低速で走行する。こ
の時、照明ランプ３５が発生した光は、原稿３１上で反
射され、集束レンズアレイ３２で集束され、読取センサ
３４に集められる。該読取センサ３４は原稿３１からの
反射光の強弱を電気信号に変換し、外部からの制御信号
によって原稿３１の１ラインごとに画像を出力する。FIG. 3 is a schematic view of a conventional image reading apparatus. In the figure, 31 is an original document, 32 is a focusing lens array, 33 is a substrate (substrate), 34 is a CCD or amorphous silicon a-Si reading sensor supported by the substrate 33, 35 is an illumination lamp, and 36 is It is a shading plate. The original 31 travels at a low speed on the focusing lens array 32 by an original traveling unit (not shown). At this time, the light generated by the illumination lamp 35 is reflected on the document 31, focused by the focusing lens array 32, and collected by the reading sensor 34. The reading sensor 34 converts the intensity of reflected light from the original 31 into an electric signal, and outputs an image for each line of the original 31 according to a control signal from the outside.
【０００７】前記照明ランプ３５は、読取センサ３４が
原稿３１からの反射光によって画像を識別するのに十分
な光量を得るために原稿３１を照射するものであり、遮
光板３６は照明ランプ３５の光が直接読取センサ３４に
入るのを防止する。このようにして得られた原稿３１の
画像は増幅され、信号処理される。そして、ファクシミ
リ装置などの画像読取・書込装置においては、原稿の画
像を読取装置で読み取って電気信号に変換するために図
３に示す読取装置が設けられていて、また、受信したデ
ータを電気信号に変換して印刷するために図２に示すＬ
ＥＤプリンタが設けられている。The illumination lamp 35 irradiates the original 31 so that the reading sensor 34 obtains a sufficient amount of light for identifying an image by the reflected light from the original 31, and the light shielding plate 36 serves as the light shielding plate 36 of the illumination lamp 35. Prevents light from entering the read sensor 34 directly. The image of the original 31 thus obtained is amplified and subjected to signal processing. In an image reading / writing device such as a facsimile device, a reading device shown in FIG. 3 is provided in order to read an image of an original with the reading device and convert it into an electric signal. L shown in FIG. 2 for converting into a signal and printing
An ED printer is provided.
【０００８】[0008]
【発明が解決しようとする課題】しかしながら、前記従
来の画像読取・書込装置においては、読取装置とＬＥＤ
プリンタのそれぞれが必要となるため、寸法が大きくな
るだけでなく、重くなり、しかもコストが高くなってし
まう。本発明は、前記従来の画像読取・書込装置の問題
点を解決して、小型化、軽量化、低価格化を図ることが
できる画像読取・書込装置を提供することを目的とす
る。However, in the above-mentioned conventional image reading / writing device, the reading device and the LED are used.
Not only is the size larger, but also heavier and more costly, as each printer is required. SUMMARY OF THE INVENTION It is an object of the present invention to provide an image reading / writing device that solves the problems of the conventional image reading / writing device described above and is capable of achieving size reduction, weight reduction, and cost reduction.
【０００９】[0009]
【課題を解決するための手段】そのために、本発明の画
像読取・書込装置においては、多数のＬＥＤ素子から成
り、直線状に配列されたＬＥＤアレイと、直線状に配列
された読取センサが平行に配設され、前記ＬＥＤアレイ
及び読取センサに対向して集束レンズアレイが配設され
る。Therefore, in the image reading / writing apparatus of the present invention, an LED array which is composed of a large number of LED elements and which is linearly arranged and a reading sensor which is linearly arranged are provided. A focusing lens array is arranged in parallel and faces the LED array and the reading sensor.
【００１０】また、前記ＬＥＤアレイ及び読取センサ
と、前記集束レンズアレイ間には、波長によって異なる
出射光路を有する分散プリズムが配設され、さらに、原
稿を照射するために照射光源が設けられる。そして、該
照射光源が発生する光と前記ＬＥＤアレイが発生する光
は波長が異なるように設定される。前記原稿からの反射
光は前記読取センサを照射し、前記ＬＥＤアレイが発生
する光は感光体ドラムを照射する。Further, a dispersive prism having an emission optical path which differs depending on the wavelength is disposed between the LED array and the reading sensor and the focusing lens array, and an irradiation light source is provided for irradiating the original. The wavelengths of the light generated by the irradiation light source and the light generated by the LED array are set to be different. The reflected light from the document illuminates the reading sensor, and the light generated by the LED array illuminates the photosensitive drum.
【００１１】[0011]
【作用】本発明によれば、前記のように多数のＬＥＤ素
子から成り、直線状に配列されたＬＥＤアレイと、直線
状に配列された読取センサが平行に配設され、前記ＬＥ
Ｄアレイ及び読取センサに対向して集束レンズアレイが
配設される。また、前記ＬＥＤアレイ及び読取センサ
と、前記集束レンズアレイ間には、波長によって異なる
出射光路を有する分散プリズムが配設され、さらに、原
稿を照射するために照射光源が設けられる。According to the present invention, as described above, the linear LED array composed of a large number of LED elements and the linear reading sensors are arranged in parallel,
A focusing lens array is arranged so as to face the D array and the reading sensor. Further, a dispersive prism having an emission optical path that differs depending on the wavelength is disposed between the LED array and the reading sensor and the focusing lens array, and an irradiation light source is provided to irradiate the document.
【００１２】したがって、ＬＥＤアレイが発生する光は
分散プリズムを通り、集束レンズアレイを通って感光体
ドラムを照射し、該感光体ドラム上に焦点を結び、静電
潜像を形成する。一方、照射光源が発生する光は原稿を
照射して反射し、集束レンズアレイを通り、分散プリズ
ムによって光路を曲げられ、読取センサを照射する。前
記、該照射光源が発生する光と前記ＬＥＤアレイが発生
する光は波長が異なるように設定される。したがって、
分散プリズムによって光路を曲げられた反射光は、ＬＥ
Ｄアレイを照射することなく読取センサを照射する。Therefore, the light generated by the LED array passes through the dispersion prism, the focusing lens array, and illuminates the photosensitive drum, and focuses on the photosensitive drum to form an electrostatic latent image. On the other hand, the light generated by the irradiation light source irradiates and reflects the original, passes through the focusing lens array, is bent in the optical path by the dispersion prism, and irradiates the reading sensor. The light generated by the irradiation light source and the light generated by the LED array are set to have different wavelengths. Therefore,
The reflected light whose optical path is bent by the dispersion prism is LE
Illuminate the read sensor without illuminating the D array.
【００１３】[0013]
【実施例】以下、本発明の実施例について図面を参照し
ながら詳細に説明する。図１は本発明の実施例を示す画
像読取・書込装置の概略図、図４は本発明の画像読取・
書込装置に使用される分散プリズムの動作説明図であ
る。まず、図４において、分散プリズムの動作について
説明する。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a schematic diagram of an image reading / writing apparatus showing an embodiment of the present invention, and FIG. 4 is an image reading / writing apparatus of the present invention.
It is an explanatory view of operation of a dispersion prism used for a writer. First, the operation of the dispersion prism will be described with reference to FIG.
【００１４】図において、４１は分散プリズムであり、
該分散プリズム４１に入射された白色光４５は、分散プ
リズム４１の第１の屈折面４７で波長λに応じて色分解
される。そして、色分解された各波長λの光４６は、第
２の屈折面４８で分散プリズム４１から空気層に出る際
に、更に各波長λに応じて角度θd ＋Δθλで出射され
る。すなわち、波長λによって出射光路が異なる。In the figure, reference numeral 41 is a dispersion prism,
The white light 45 incident on the dispersion prism 41 is color-separated by the first refracting surface 47 of the dispersion prism 41 according to the wavelength λ. Then, the color-separated light 46 of each wavelength λ is further emitted at an angle θ d + Δθ λ according to each wavelength λ when the light 46 exits from the dispersion prism 41 to the air layer at the second refracting surface 48. That is, the outgoing optical path differs depending on the wavelength λ.
【００１５】次に、図１において本発明の画像読取・書
込装置について説明する。図において、５１はサブスト
レートであり、該サブストレート５１の上にＬＥＤアレ
イ５２、ＣＣＤ、アモルファスシリコンａ−Ｓｉ等の読
取センサ５３及びＬＥＤドライバＩＣ５４が配設され
る。４１は分散プリズム、５５は該分散プリズム４１を
挟んで前記ＬＥＤアレイ５２及び読取センサ５３に対向
して設けられた集束レンズアレイ、５６は原稿（印刷動
作時においては、図示しない感光体ドラムがここに位置
する。）また、５８は照射光源として設けられた照明ラ
ンプ、５９は遮光板であり、前記照明ランプ５８は、読
取センサ５３が原稿５６からの反射光によって画像を識
別するのに十分な光量を得るために原稿５６を照射する
ものであり、遮光板５９は照明ランプ５８の光が直接読
取センサ５３に入るのを防止する。このようにして得ら
れた原稿５６の画像は増幅され、信号処理される。Next, the image reading / writing apparatus of the present invention will be described with reference to FIG. In the figure, 51 is a substrate, and an LED array 52, a CCD, a reading sensor 53 such as amorphous silicon a-Si, and an LED driver IC 54 are arranged on the substrate 51. Reference numeral 41 is a dispersion prism, 55 is a focusing lens array provided to face the LED array 52 and the reading sensor 53 with the dispersion prism 41 interposed therebetween, and 56 is a document (in a printing operation, a photosensitive drum (not shown) is used. Further, 58 is an illuminating lamp provided as an irradiation light source, 59 is a light shielding plate, and the illuminating lamp 58 is sufficient for the reading sensor 53 to identify the image by the reflected light from the original 56. The original 56 is irradiated to obtain the light amount, and the light shielding plate 59 prevents the light of the illumination lamp 58 from directly entering the reading sensor 53. The image of the original 56 thus obtained is amplified and signal-processed.
【００１６】前記サブストレート５１上においては多数
のＬＥＤアレイ５２が直線状に配列されてＬＥＤアレイ
ヘッドを形成している。前記各ＬＥＤアレイ５２は多数
のＬＥＤ素子から成り、各ＬＥＤ素子の発生する光の波
長λが６６０〜７２０〔ｎｍ〕のものが使用される。該
ＬＥＤアレイ５２と平行で、かつ、分散プリズム４１に
よって色分解された光４６（図４）が当たる位置に、読
取センサ５３が直線状に配列される。A large number of LED arrays 52 are linearly arranged on the substrate 51 to form an LED array head. Each of the LED arrays 52 is composed of a large number of LED elements, and those having a wavelength λ of light generated by each LED element of 660 to 720 [nm] are used. The reading sensor 53 is linearly arranged at a position parallel to the LED array 52 and at a position where the light 46 (FIG. 4) color-separated by the dispersion prism 41 is applied.
【００１７】前記構成の画像読取・書込装置は、印刷動
作時に外部からの制御信号を受けると、ＬＥＤドライバ
ＩＣ５４がＬＥＤアレイ５２の各ＬＥＤ素子を駆動し、
選択的に１発光動作を行わせる。この時、光は矢印６０
で示すように分散プリズム４１を通り、集束レンズアレ
イ５５を通って感光体ドラム１１（図２参照）を照射
し、該感光体ドラム１１上に焦点を結び、静電潜像を形
成する。以降の各プロセスは従来の技術で述べたものと
同じであるので説明を省略する。In the image reading / writing apparatus having the above structure, when the control signal from the outside is received during the printing operation, the LED driver IC 54 drives each LED element of the LED array 52,
One light emission operation is selectively performed. At this time, the light is arrow 60
As shown in FIG. 3, the photosensitive drum 11 (see FIG. 2) is irradiated with the light through the dispersion prism 41, the focusing lens array 55, and focused on the photosensitive drum 11 to form an electrostatic latent image. The subsequent processes are the same as those described in the conventional technique, and thus the description thereof is omitted.
【００１８】一方、読取動作時においては、照明ランプ
５８は前記ＬＥＤアレイ５２が発生する光の波長λ1 と
は異なり、例えば５５０〔ｎｍ〕前後の波長λ2 の光を
発生し、該光を原稿５６に照射する。この時、原稿５６
からの反射光は矢印６１で示すように集束レンズアレイ
５５を通り、分散プリズム４１によって光路を曲げら
れ、ＬＥＤアレイ５２上には当たらず読取センサ５３を
照射する。On the other hand, during the reading operation, the illumination lamp 58 generates light having a wavelength λ 2 of about 550 [nm], which is different from the wavelength λ 1 of light generated by the LED array 52, and emits the light. The original 56 is irradiated. At this time, the manuscript 56
The reflected light from passes through the focusing lens array 55 as shown by the arrow 61, the optical path is bent by the dispersion prism 41, and does not hit the LED array 52 and irradiates the reading sensor 53.
【００１９】読取センサ５３を照射した前記反射光の強
弱は、電気信号に変換され、信号処理される。なお、本
発明は前記実施例に限定されるものではなく、本発明の
趣旨に基づいて種々変形することが可能であり、それら
を本発明の範囲から排除するものではない。The intensity of the reflected light emitted from the reading sensor 53 is converted into an electric signal and processed. It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made based on the spirit of the present invention, and they are not excluded from the scope of the present invention.
【００２０】[0020]
【発明の効果】以上詳細に説明したように、本発明によ
れば、ＬＥＤアレイ及び読取センサに対向して集束レン
ズアレイが配設され、前記ＬＥＤアレイ及び読取センサ
と、前記集束レンズアレイ間には、波長によって異なる
出射光路を有する分散プリズムが配設される。As described above in detail, according to the present invention, the focusing lens array is disposed so as to face the LED array and the reading sensor, and the focusing lens array is provided between the LED array and the reading sensor and the focusing lens array. Is provided with a dispersion prism having an output optical path that differs depending on the wavelength.
【００２１】したがって、ＬＥＤアレイが発生する光は
分散プリズムを通り、集束レンズアレイを通って感光体
ドラムを照射し、該感光体ドラム上に焦点を結び、静電
潜像を形成する。一方、照射光源が発生した光は原稿に
照射させられて反射し、集束レンズアレイを通り、分散
プリズムによって光路を曲げられ、読取センサを照射す
る。Therefore, the light generated by the LED array passes through the dispersion prism, the focusing lens array, and illuminates the photosensitive drum, and focuses on the photosensitive drum to form an electrostatic latent image. On the other hand, the light generated by the irradiation light source is irradiated onto the document and reflected, passes through the focusing lens array, is bent in the optical path by the dispersion prism, and irradiates the reading sensor.
【００２２】ここで、照射光源が発生する光の波長は前
記ＬＥＤアレイが発生する光の波長と異なるように設定
されるため、分散プリズムによって光路を曲げられた反
射光はＬＥＤアレイを照射することなく、読取センサを
照射する。したがって、読取装置とＬＥＤプリンタの集
束レンズアレイを共通化することができるため、小型
化、軽量化、低価格化を図ることができる。Since the wavelength of the light generated by the irradiation light source is set to be different from the wavelength of the light generated by the LED array, the reflected light whose optical path is bent by the dispersion prism irradiates the LED array. Instead, illuminate the reading sensor. Therefore, since the reading device and the focusing lens array of the LED printer can be shared, the size, weight, and cost can be reduced.
【図１】本発明の実施例を示す画像読取・書込装置の概
略図である。FIG. 1 is a schematic diagram of an image reading / writing device showing an embodiment of the present invention.
【図２】従来のＬＥＤプリンタの概略図である。FIG. 2 is a schematic diagram of a conventional LED printer.
【図３】従来の画像読取装置の概略図である。FIG. 3 is a schematic diagram of a conventional image reading device.
【図４】本発明の画像読取・書込装置に使用される分散
プリズムの動作説明図である。FIG. 4 is an operation explanatory view of a dispersion prism used in the image reading / writing device of the present invention.
５３ 読取センサ ４１ 分散プリズム ５２ ＬＥＤアレイ ５５ 集束レンズアレイ ５６ 原稿 53 Reading Sensor 41 Dispersion Prism 52 LED Array 55 Focusing Lens Array 56 Original
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ４１Ｊ 3/44 Ｈ０４Ｎ 1/04 １０７ Ｚ 7251−5Ｃ (72)発明者 中村 幸夫 東京都港区虎ノ門１丁目７番12号 沖電気 工業株式会社内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Reference number within the agency FI Technical display location B41J 3/44 H04N 1/04 107 Z 7251-5C (72) Inventor Yukio Nakamura Toranomon, Minato-ku, Tokyo 1-7-12 Oki Electric Industry Co., Ltd.
Claims (1)
状に配列されたＬＥＤアレイと、（ｂ）該ＬＥＤアレイ
に対して平行に配設され、直線状に配列された読取セン
サと、（ｃ）前記ＬＥＤアレイ及び読取センサに対向し
て配設された集束レンズアレイと、（ｄ）前記ＬＥＤア
レイ及び読取センサと、前記集束レンズアレイ間に配設
され、波長によって異なる出射光路を有する分散プリズ
ムと、（ｅ）原稿の画像を読み取るための照射光源とを
有するとともに、（ｆ）前記ＬＥＤアレイが発生する光
と前記照射光源が発生する光は波長が異なるように設定
され、（ｇ）前記原稿からの反射光は前記読取センサを
照射し、前記ＬＥＤアレイが発する光は感光体ドラムを
照射することを特徴とする画像読取・書込装置。1. An LED array, which comprises (a) a large number of LED elements and is linearly arranged, and (b) a reading sensor which is arranged parallel to the LED array and linearly arranged. (C) a converging lens array arranged so as to face the LED array and the reading sensor; and (d) a converging lens array arranged between the LED array and the reading sensor and the converging lens array, and a different emission optical path depending on the wavelength. The dispersion prism has, and (e) an irradiation light source for reading an image of a document, and (f) the light generated by the LED array and the light generated by the irradiation light source are set to have different wavelengths. g) An image reading / writing device characterized in that the light reflected from the document illuminates the reading sensor and the light emitted from the LED array illuminates the photosensitive drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12025492A JPH05313092A (en) | 1992-05-13 | 1992-05-13 | Image reading/writing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12025492A JPH05313092A (en) | 1992-05-13 | 1992-05-13 | Image reading/writing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05313092A true JPH05313092A (en) | 1993-11-26 |
Family
ID=14781651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12025492A Withdrawn JPH05313092A (en) | 1992-05-13 | 1992-05-13 | Image reading/writing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05313092A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0618078A2 (en) * | 1993-03-29 | 1994-10-05 | Minnesota Mining And Manufacturing Company | An optical scanning device |
| EP0663662A2 (en) * | 1994-01-13 | 1995-07-19 | Toshinobu Futagawa | Optical head unit |
| JP2017177484A (en) * | 2016-03-30 | 2017-10-05 | 株式会社沖データ | Exposure device, image reading device, and image forming device |
-
1992
- 1992-05-13 JP JP12025492A patent/JPH05313092A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0618078A2 (en) * | 1993-03-29 | 1994-10-05 | Minnesota Mining And Manufacturing Company | An optical scanning device |
| EP0618078A3 (en) * | 1993-03-29 | 1995-01-04 | Minnesota Mining & Mfg | An optical scanning device. |
| EP0663662A2 (en) * | 1994-01-13 | 1995-07-19 | Toshinobu Futagawa | Optical head unit |
| EP0663662A3 (en) * | 1994-01-13 | 1995-08-09 | Futagawa Toshinobu | |
| JP2017177484A (en) * | 2016-03-30 | 2017-10-05 | 株式会社沖データ | Exposure device, image reading device, and image forming device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990803 |