JPS611169A - Picture reader - Google Patents

Picture reader

Info

Publication number
JPS611169A
JPS611169A JP60110438A JP11043885A JPS611169A JP S611169 A JPS611169 A JP S611169A JP 60110438 A JP60110438 A JP 60110438A JP 11043885 A JP11043885 A JP 11043885A JP S611169 A JPS611169 A JP S611169A
Authority
JP
Japan
Prior art keywords
image
read
original
photosensitive drum
picture
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
Application number
JP60110438A
Other languages
Japanese (ja)
Inventor
Masaaki Fujinawa
藤縄 雅章
Susumu Saito
進 斉藤
Akira Arimoto
昭 有本
Kunihiro Okada
邦弘 岡田
Keiji Kataoka
慶二 片岡
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.)
Koki Holdings Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Ltd
Hitachi Koki 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 Hitachi Ltd, Hitachi Koki Co Ltd filed Critical Hitachi Ltd
Priority to JP60110438A priority Critical patent/JPS611169A/en
Publication of JPS611169A publication Critical patent/JPS611169A/en
Pending legal-status Critical Current

Links

Landscapes

  • Facsimile Scanning Arrangements (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)

Abstract

PURPOSE:To read all colors on an original by lighting the original with a white lamp or a fluorescent light, forming the optical image on a photosensitive drum and developing its electrostatic latent image on the photosensitive drum means of the electrophotography method so as to allow a laser scan to read the visualized image by development. CONSTITUTION:The original on an original platen 1 is lighted by a lighting lamp 2 of a picture reader, its optical image is reflected by a mirror 3 and formed on the photosensitive drum 23 by an image forming lens 5. A charge unit 7, a development unit 8 and a cleaner unit 9 are arranged on the peripheral of the drum 23 so as to bring the picture formed on the drum 23 into an electrostatic latent image. The unit 8 adheres a pigment onto the electrostatic latent image, the result is developed and visualized. The visualized picture is read by a laser scanner comprising a laser light source 15, a rotary mirror 16, an Ftheta lens 22, mirrors 13, 14 and a motor 17 for rotary mirror. Then the reflected light of the scanned optical beam is collected by a light collecting optical fiber 10, led to a photodetector 11 and the picture in all colors on the original is read.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、図面、文章等の画像を読み取り電気信号に変
換する装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an apparatus for reading images such as drawings and texts and converting them into electrical signals.

〔発明の背景〕[Background of the invention]

従来、図面、文章等の画像を読み取り電気信号に変換す
る装置として、図面、文章等の画像をレーザ光線等で走
査し、その反射光を光検出器に受けて光学像を電気信号
に変換するレーザ・スキャン方式の画像読み取り装置が
使われて来た(例えば、画像電子学会予稿82−04−
3  「電子網が装置」)。
Conventionally, devices that read images such as drawings and texts and convert them into electrical signals scan the images with laser beams, etc., and receive the reflected light with a photodetector to convert the optical image into electrical signals. Laser scanning image reading devices have been used (for example, IEICE Proceedings 82-04-
3 “The electronic network is the device”).

かかる画像読み取り装置では、単一波長の光で図面1文
章等の原稿を走査するため、その波長に相当する色で書
かれた原稿を読み取ることが出来なかった。
In such an image reading device, since a document such as a drawing or a text is scanned with light of a single wavelength, it is not possible to read a document written in a color corresponding to that wavelength.

特に光源として、He−Neレニザや半導体レーザを使
用した場合、レーザ光の波長が赤色または近赤外領域の
ため、赤色系のインクで書かれた原稿(例えば印鑑)を
読み取ることが困難であった0 〔発明の目的〕 本発明は、かかるレーザ・スキャン方式の画像読み取り
装置の欠点に鑑みてなされたものであり、すべての色の
インクで書かれた原稿を読み取ることのできるレーザ・
スキャン方式の画像読み取り装置を提供することを目的
とする。
In particular, when a He-Ne laser or semiconductor laser is used as a light source, the wavelength of the laser light is in the red or near-infrared region, making it difficult to read manuscripts written in red ink (for example, seals). [Objective of the Invention] The present invention has been made in view of the drawbacks of such laser scanning image reading devices, and it is an object of the present invention to develop a laser scanning image reading device that can read originals written with ink of all colors.
The purpose of the present invention is to provide a scanning type image reading device.

〔発明の概要〕[Summary of the invention]

かかる目的を達成するため本発明によれば、レーザ波長
の色選択性を除くために、原稿を白色うンプや螢光灯等
で照らし、その光学像を感光ドラム上に結像させ、感光
ドラムに出来た静電潜像を電子写真の原理を用いて現像
し、これにより可視化された像(通常は黒色のトナを用
いる。)をレーザ・スキャン方式で読み取ることを特徴
とする。
To achieve this object, according to the present invention, in order to eliminate the color selectivity of the laser wavelength, an original is illuminated with a white dump, a fluorescent lamp, etc., and an optical image thereof is formed on a photosensitive drum. The electrostatic latent image formed is developed using the principles of electrophotography, and the resulting visualized image (usually using black toner) is read using a laser scanning method.

このようにいろいろな色で書かれた原稿を1度電子写真
の原理を用いて単色の像(通常黒色)に変換し、その像
を単一波長のレーザで走査することにより、すべての色
のインクで書れた原稿を読み取ることができる。さらに
、レーザビームスキャン方式のため、各種のセンサーア
レーを用いる方式にくらべ、高速・高分解の読取りが可
能である0 〔発明の実施例〕 以下、本発明を実施例を参照して詳細に説明する0 第1図は本発明の一実施例の構成を示す図である。図に
おいて、lは原稿台、2は照明用ランプ。
By converting a manuscript written in various colors into a monochromatic image (usually black) using the principles of electrophotography and scanning that image with a single wavelength laser, all colors can be reproduced. Can read manuscripts written in ink. Furthermore, since it is a laser beam scanning method, high-speed and high-resolution reading is possible compared to methods using various sensor arrays. 0 FIG. 1 is a diagram showing the configuration of an embodiment of the present invention. In the figure, l is a document table, and 2 is an illumination lamp.

3は鏡、4は結像用レンズ、5は鏡23は感光ドラムで
ある。原稿台1の上に乗せられた原稿は照明用ランプ2
で照らされ、その光学像は鏡3で反射され、結像用レン
ズ5により感光ドラム23の上に結像される。
3 is a mirror, 4 is an imaging lens, and 5 is a mirror 23 is a photosensitive drum. The document placed on the document table 1 is illuminated by the illumination lamp 2.
The optical image is reflected by the mirror 3 and formed onto the photosensitive drum 23 by the imaging lens 5.

7.8.9はそれぞれ感光ドラムの周囲lこ設けられた
帯電ユニット、現像ユニット、クリーナ・ユニットであ
る。帯電ユニット7により帯電した感光ドラム23上に
上記手段により結像された画像は、静電潜像を形成する
。この静電潜像上に現像ユニット8により顔料を耐着さ
せ現像され、可視化される。現像された像は公知のレー
ザ・スキャン手段を用いて読み取られた後にクリーナ・
ユニット9で清掃される。これにより、くり返し使用可
能である。
Reference numerals 7, 8, and 9 denote a charging unit, a developing unit, and a cleaner unit, respectively, which are provided around the photosensitive drum. The image formed by the above means on the photosensitive drum 23 charged by the charging unit 7 forms an electrostatic latent image. The developing unit 8 causes the pigment to adhere to the electrostatic latent image and develop it, thereby making it visible. The developed image is read using known laser scanning means and then cleaned using a cleaner.
It is cleaned in unit 9. This allows repeated use.

なお、図において、15はレーザ光源、16は回転鏡、
17は回転鏡用モータ、22はFθレンズ、13及び1
4はそれぞれ鏡、10は集光用光ファイバ、11は光検
出器であり、これらによりレーザ・スキャン手段が構成
される。
In the figure, 15 is a laser light source, 16 is a rotating mirror,
17 is a rotating mirror motor, 22 is an Fθ lens, 13 and 1
4 is a mirror, 10 is a condensing optical fiber, and 11 is a photodetector, which constitute a laser scanning means.

即ちレーザ光源15からでた光ビームは回転鏡16、F
θレンズ22および@13,14を通りて、感光ドラム
23上に現像された像を走査する。
That is, the light beam emitted from the laser light source 15 is rotated by the rotating mirror 16, F.
The image developed on the photosensitive drum 23 is scanned through the θ lens 22 and @13, 14.

走査された光ビームの反射光は集光用光ファイバ10で
集光され、光検出器11に導ひかれ、電気信号に変換さ
れる0なお、光ファイバlOの代わりにレンズ系や反射
系の光学系を用いて集光しても良いことは勿論である。
The reflected light of the scanned light beam is focused by a focusing optical fiber 10, guided to a photodetector 11, and converted into an electrical signal. Of course, a system may be used to collect the light.

〔発明の効果〕〔Effect of the invention〕

以上説明したごとく1本発明によれば、すべての色で書
かれた反巻を読み取ることが可能であり、さらには、高
速、かつ高分解能の画像読みとりも実現できる。
As explained above, according to the present invention, it is possible to read counterrolls written in all colors, and furthermore, it is possible to realize high-speed and high-resolution image reading.

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

第1図は本発明の一実施例の構成を示す図である0 FIG. 1 is a diagram showing the configuration of an embodiment of the present invention.

Claims (1)

【特許請求の範囲】[Claims] 1、画像にレーザ光を照射する手段と、感光ドラムと、
上記画像の光学像を上記感光ドラム上に結像する光学手
段と、上記感光ドラム上に結像された上記光学像を現像
する手段と、上記現像された画像を走査する手段と、該
走査により得られる反射光を受光し電気信号に変換する
手段とを有することを特徴とする画像読み取り装置。
1. A means for irradiating an image with laser light, a photosensitive drum,
an optical means for forming an optical image of the image on the photosensitive drum; a means for developing the optical image formed on the photosensitive drum; a means for scanning the developed image; An image reading device comprising means for receiving the obtained reflected light and converting it into an electrical signal.
JP60110438A 1985-05-24 1985-05-24 Picture reader Pending JPS611169A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60110438A JPS611169A (en) 1985-05-24 1985-05-24 Picture reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60110438A JPS611169A (en) 1985-05-24 1985-05-24 Picture reader

Publications (1)

Publication Number Publication Date
JPS611169A true JPS611169A (en) 1986-01-07

Family

ID=14535726

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60110438A Pending JPS611169A (en) 1985-05-24 1985-05-24 Picture reader

Country Status (1)

Country Link
JP (1) JPS611169A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009008691A (en) * 2008-10-10 2009-01-15 Panasonic Corp Flow measuring apparatus
JP2009008692A (en) * 2008-10-10 2009-01-15 Panasonic Corp Flow measuring apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009008691A (en) * 2008-10-10 2009-01-15 Panasonic Corp Flow measuring apparatus
JP2009008692A (en) * 2008-10-10 2009-01-15 Panasonic Corp Flow measuring apparatus

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