JPS5857856A - Picture reader - Google Patents

Abstract

PURPOSE:To prevent partial duplicate reading, missing of reading, and shift of picture, by taking an image forming optical system to a primary dimension image sensor as one common system and providing an optical path split mirror surface at the light emitting side of the system. CONSTITUTION:A picture of an original 1 of an original stand is formed on the 1st and 2nd primary image sensors CCDs 1, 2 with a common image forming optical system 7. A light through a part corresponding to the 1st half A of the information along the main scanning direction of the original 1 is directly irradiated and formed on the 1st sensor CCD1 out of lights through the system 7. Further, a light of a part corresponding to the latter half B of the information is emitted from the system 7 and split and deflected from the light corresponding to the 1st half A of information on an optical path split mirror surface 8 and formed on the 2nd sensor CCD2. Thus, a part of the original can never be read with two lenses or lost.

Description

【発明の詳細な説明】 本発明は一次元イメージセンナを利用した画像読取）装
置ｖｃ関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image reading device (vc) using a one-dimensional image sensor.

近都７アクＶｔす複写機等に於−て、ＣＣＤイ・メーー
ジ慟ンサ・ＭＯ８イメージセンナ等を用−てオリジナル
ｌ！取〉を行なう報告がされてｉる。Use a CCD image sensor, MO8 image sensor, etc. on a copier, etc. to create an original copy! There have been reports that they will carry out a

これらｏｗｔｔ＊ｖｓに用−られるイメージセンナは一
般に一次元イメージセンナであ〕、主走査方向に電気的
に走査し、−列ＯＶａ像Ｏ撮直慣報を時間的に一列にな
らべた形で取ル出し、ｌＬにセンナによるＷＲ堆参部と
ぶ狽との相対移動によ）副走査して２次元Ｏ原画儂Ｏパ
ターンを時間的に一列にならべられ九罵気信号に変換す
る。そしてその信号を電送線によ）他Ｏ装置（記―装置
、メ４−リ等）へ送り出し、プリント、表示等のＪ６通
を可能とする。The image sensor used for these owtt*vs is generally a one-dimensional image sensor], which electrically scans in the main scanning direction and captures the -row OVa image O direct information in a temporally aligned manner. The two-dimensional O original image is temporally arranged in a line by sub-scanning (relative movement with the WR assembly section by Senna) and converted into a nine-dimensional signal. Then, the signal is sent to other O devices (recording device, mailbox, etc.) via an electric transmission line, making it possible to print, display, etc.

しかし市ｌｌ畜れて−るＣＯＤ等のイメージセンナを用
ｉて、よ襲高晶質０＠像信号を高適度で得ようとすると
次のような問題がある。第１Ｋイメージセン１０画素敏
が小−ａｈ事が問題となる。現在市１１１−ｉ１れて−
る一次元固体イメージ七ンーｒｏｉｉｉ嵩歇紘最大のも
Ｏでも２０４８画素楊度であ）。However, when attempting to obtain a highly crystalline 0@ image signal at a high level using an image sensor such as the COD, which is widely known, the following problems arise. The problem is that the 10 pixel resolution of the 1st K image sensor is small. Currently city 111-i1-
The largest one-dimensional solid image is 2048 pixels.

例えばム３ｔイズ（２９７−Ｘ　４２０−）　０原両像
をＷＩＬＩＩＬ為場合、そＯ短辺方向に主走査するとし
て４４？画素／■Ｉｌｌ［４部画素書直しか得られず。For example, if you want to WILIIL both original images of M3t size (297-X 420-), then 44? Pixel/■Ill [Only 4 pixel rewrites were obtained.

不満足なものである。高い画素１１度を得るためには、
よ〕画素数の大き−イメージセンナがあればｊＬ％／％
のであるが、固体イメージセン−１０画画素上増す事紘
技術的に困難な面が多く、又で龜たとしても高価である
。It is unsatisfactory. In order to obtain a high pixel of 11 degrees,
[Yo] Large number of pixels - If you have an image sensor, jL%/%
However, increasing the size of a solid-state image sensor to 10 pixels is technically difficult, and even if it is difficult, it is expensive.

そζで従来第１ＴｉＡｏ１ｉＩＡ＜複数のイメージセン
ナＣ０Ｄ１．２を横にならべて使用する事によシ。Therefore, it is recommended to use multiple image sensors C0D1.2 side by side.

画素数を増す事が提案されてｉる。It has been proposed to increase the number of pixels.

これ線条イメージセンサに原稿１の主走査方向に沿う情
＠を分担読取りさせるもので、第１図例のものは２個の
イメージセンｔｃｃ１．２を利用し、第１０イメージセ
／すＣＣ１によ鬼厘稿１０主走査方内に沿う情報の前半
部ムを、第２　ｏ　＊　ｙすＣＣ摩に後半部Ｂを夫々分
担読＊＊させるようにしたもので、＃Ｉ２図はその制御
回路例である。The linear image sensor is used to read the information along the main scanning direction of the document 1, and the example shown in Fig. 1 uses two image centers tcc1.2 and the 10th image sensor CC1. The first half of the information along the main scanning direction is read by the second o * y CC machine, respectively, and the second half B is read separately, and Figure #I2 shows its control circuit. This is an example.

即ち先ず回路自動切換えスイッチ５による［１０イメー
ジセンｔｃｃＩ儒切換えによｊ１！１１１０イメージ七
ンナＣＣ１にパルス１１４から信号続出し夕―ツタパル
スが与えられて賦センナＣＣＩＶｃよる原稿主走査方向
情報Ｏ前亭部人の読堆ル炉なされる。この読取〕が終る
と同時にスイッチ５の自動切換えによ〉回路が第２０イ
メージ七ン？ＣＣ２儒に切換えられ今度は第２のイメー
ジセンナＣＣ２にＡｈス源６からの信号続出しり冑ツク
パルスが与えられて諌センナＣＣ２による原稿情報後半
部ＢＯＩ！取ルがなされる。との２つのイメージセンナ
によ）胱堆つ九信号を単に続けて送）出す事によ〉、一
本のイメージセンサでｍ取っ九〇と同様Ｏ時間的に一列
に並んだｍ像信号Ｓが出力される。That is, first, by switching the automatic circuit changeover switch 5 to [10 image center tccI], a series of signals are given from pulse 114 to image center CC1, and a pulse is applied to image sensor CCIVc. The club's reading is done. As soon as this reading is completed, the switch 5 automatically switches the circuit to the 20th image 7? The mode is switched to CC2, and the second image sensor CC2 is given a continuous pulse of signals from the Ah source 6, and the second half of the document information BOI! by the image sensor CC2 is given. The deal will be made. By simply sending the bladder signals S to the two image sensors, one image sensor can generate m image signals S that are aligned in time, as in the case of m. is output.

崗、第１図に於て２はガラス等速−［剃０鳳積載置台で
、原稿１はζ０台２上に画像翼下向亀にして載置セット
される。５拳４は夫々第１及び第２のイメージセン？Ｃ
Ｃ１，２に対すゐ結像光学系である。鳳１１１１０ＩＩ
ｉ１１走査嬬原稿台移動蓋０場合状台１が、又原稿台同
定置の場合紘結像光学系又繻センｔ００１．２を含む結
像光学系が図面上紙１ｉｉｒＩｌｃ直角方向に移動駆動
畜れてなされる。原稿１両は図に省略した照明手段でメ
リット照＠威抹金面照＠される。原稿面からｔ）Ｉｔ射
光拡績健光学系に直接或紘反射鏡を介して入射する。In FIG. 1, reference numeral 2 denotes a glass constant velocity loading table, and the original 1 is set on the ζ0 table 2 with the image wing facing downward. Are 5 fists 4 the first and second image centers respectively? C
This is an imaging optical system for C1 and C2. Otori 11110II
i11 Scanning Original table moving lid 0 If table 1 is also placed on the document table, the imaging optical system or the imaging optical system including the center 001.2 is moved and driven in the direction perpendicular to the paper 1iirIlc on the drawing. It is done. One manuscript is illuminated by the illumination means not shown in the figure. t) It enters the incident light from the document surface directly into the diffusing optical system or via a mirror.

しかしこの場合゛の問題点として次のような点が挙げら
れる。即ち第３図例のように原稿１０画像爾が原稿載置
台２面に対して全体千両的に賓着せずセンｔＣＣ１，２
の４）読取）領域ム・Ｂｅ境界部ＩＩｃまたがって浮き
上１部があると、第１０センサＣＣ１により領域ムの倫
に領域Ｂ９４ＯＢ’部分もｖＬ取られ、又第２のセンサ
ＣＣ２によ〉領域ＢＯ＃ＡｌＩＣ領域ム儒のム１部分も
試取られ、そｏｌ呆電気処理されて続出されるプリント
は、＊＊０ム゛及びＩＢ＠領域Ｏ像につ−て夫々２つの
像がＳ威名れたｔのになる欠点を有する。However, the following problems can be raised in this case. In other words, as shown in the example in Fig. 3, the original 10 images are not completely attached to the two sides of the original placing table;
4) Reading) When there is a floating part across the area M/Be boundary IIc, the 10th sensor CC1 also takes the area B94OB' part VL to the boundary of the area M, and the second sensor CC2 The area BO # AIC area M 1 part was also sampled, and the prints that were produced one after another after being subjected to electrical processing were two images, respectively, for the ** 0 mm and IB @ area O images. It has the drawbacks of becoming a prestigious company.

これは、原稿１０面が原稿台２面に対して平面的に接触
しズーるような場合で′４ｈ、結像レンズとそれに対応
するイメージ七ｙすを各々複数有している場合で紘、原
稿面上の１つの点を複歇Ｏセｙすで検知することが生じ
る。その結果、試み出畜れたプリントには１つの点に対
して、複数の像が生じることになる。This is true in the case where the 10th surface of the document contacts the 2nd surface of the document table in a flat manner and zooms, and in the case where a plurality of imaging lenses and a plurality of image frames corresponding thereto are provided. A single point on the document surface may be detected multiple times. As a result, the attempted print will have multiple images for one point.

ｔた。一般に複数個ＯイメージセンナＣ０Ｄ１゜２と複
数個の投影光学系３・４（以下単にレンズと略称する）
とによル一連のｉｉｉ偉領域ム５ｉｌｔ正確に分担Ｘ埴
ｐ名せることは、各分担読取襲系が完全に独立している
ため極めて困難であり、これを再生して得られ為画像に
は継ぎ目、歪み等が現われゐ。It was. Generally, a plurality of O image sensors C0D1゜2 and a plurality of projection optical systems 3 and 4 (hereinafter simply referred to as lenses) are provided.
It is extremely difficult to accurately name a series of three major areas, as each division is completely independent, and the image obtained by reproducing this is extremely difficult. Seams, distortions, etc. appear.

上１０ように複数Ｏレンズ６・４を用ｉた時に。When multiple O lenses 6 and 4 are used as shown in 10 above.

生じ為欠点を改善するため第４ｖＡ例のようＫＩ！用す
るレンズ７を１つ４ｃ＠定して、そのレンズの結像Ｅｌ
に一次元イメージセンナを機敏儒ＣＣＤ１゜２を用−る
構成にした場合も、実際止金センナＣＣＤ１，２によ為
ｉｍ＊ｎ部分林センナの構成。In order to improve the resulting defects, KI! as in the 4th vA example. One lens 7 to be used is fixed at 4c@, and the image formation El of that lens is
Even if the one-dimensional image sensor is configured to use agile CCDs 1 and 2, the actual stop sensor CCDs 1 and 2 are used to form an im*n partial image sensor.

スペース上の問題によ）画像の全域ム＋ｍｔｉｇ！み込
むこと拡小可能である。即ち、センｔｃｃｐｉ。(Due to space issues) the entire area of the image M+mtig! It can be enlarged by folding. That is, cent tccpi.

２岡±ｏｔｉｘぎ■の部分Ｃｖｃ対応すゐ両像部分は不
＠ＩＩ、　ｔた紘画像を形成し得な−ことになる・本発
明は同じく複数個〇−次元イメージセｙすを利用してそ
れ等のイメージセンナによｐ原稿情報の主走査方向に沿
う情報を分担ｍｏｂさせゐ方式のものであるが、上述の
よう１ｋｗＩ問題を解消した読取ル装置１ｍ供すること
を目的とする。This means that the Cvc-corresponding part of the 2-Oka +/-otix area cannot form a 2-dimensional image. The purpose of this invention is to provide a 1 m reading device which solves the 1 kwI problem as described above, although the image sensor is used to share the information along the main scanning direction of the original document information.

即ち、複数個〇−次元イメージセンナを用ｉ。That is, a plurality of 〇-dimensional image sensors are used.

それ等のセンナによ）原稿情報Ｏ主走査方向ｔｃ沿う情
報を領域分担させて分割読＊ｂ盲せる方式０画像読１ｉ
Ｌｎ装ＷＬに於て、各−次元イメージセンナに対する結
像光学系を共通一つの系にし、その結像光学系Ｏ光出射
側の光路に光路分割鏡面を配設して出射光を分割化し、
そＯ各分割光を各分担−次元イメージセンサに結像入射
させる。ように構成したことを特徴とする両像読堆ル装
置を要旨とする。(by those sensors) Original information O Information along the main scanning direction tc is divided into areas and read *b Blinding method 0 Image reading 1i
In the Ln system WL, the imaging optical system for each -dimensional image sensor is made into one common system, and an optical path splitting mirror surface is arranged in the optical path on the light output side of the imaging optical system O to divide the emitted light,
Then, each divided light is made to form an image on each divided-dimensional image sensor. The gist of the present invention is a double-image reading stacking device characterized by being configured as follows.

第５図に一実施例として２個〇−次元イメージセンサを
用ｉた装置例を示す。即ち原稿台２上の原稿１の画像は
１つの共通の結像光学系７によって、第１及び第２の２
個の一次元イメージセンナＣ０Ｄ１．２に結像されるが
、この場合１１＆１のセンｔｃｃＤ１には結像光学系７
を過つ九党のうち。FIG. 5 shows an example of an apparatus using two 0-dimensional image sensors as an embodiment. That is, the image of the document 1 on the document table 2 is captured by the first and second two images by one common imaging optical system 7.
The image is formed on the one-dimensional image sensor C0D1.2, but in this case, the image forming optical system 7
Of the nine parties that pass.

原稿１０主滝“歪方向に沿う情報０ｔＩＩ半部ムに対応
する部分Ｏ光−が直接照射結像する。The main portion of the document 10 is directly irradiated and imaged by a portion of the light corresponding to the information 0tII half portion along the distortion direction.

一方情報の後半ｉｌＢに対応する部分Ｏ光線は結像光学
系７から出射した後光路分割鏡面８にて上記Ｏｆｌ報前
半部ムに対応する光線から分割偏向されて第２のセンナ
Ｃ０Ｄ２に入射結像する。On the other hand, the partial O ray corresponding to the latter half of the information ilB is emitted from the imaging optical system 7, and then split and deflected from the ray corresponding to the first half of the Ofl information by the optical path splitting mirror surface 8, and is incident on the second sensor C0D2. Image.

つｔｎｘ稿１０１スリットラインは複ＩＩＣ本例は２つ
ム・Ｂ）Ｋ分割畜れて夫々第１１１第２０セン？Ｃ０Ｄ
１．２に：分担されて試み込まれる。The tnx draft 101 slit line is multiple IIC and this example is 2 M/B) K divided into 111th and 20th sen respectively? C0D
1.2: Allocated and attempted.

そして、各々のイメージセンサＣＣＤ１．２で読み込ま
れた情報は一担缶イメージセンナに対応した複数Ｏバッ
フ７メ篭りに各々記憶される。ζＯＳ敏分割畜れて記憶
畜れ九！スリットラインの情＠をシリアルデータとして
取り出すことによってメモリ内容を合成し１スリット分
の画像情報とする。The information read by each image sensor CCD 1.2 is stored in seven multiple O-buffers corresponding to the single-capacity image sensor. ζOS Toshibai damn it, damn the memory! By extracting the information of the slit line as serial data, the memory contents are combined to form image information for one slit.

まえ、バッファメモリをイメージセンｔ１個に対して榎
数有してｉる場合ｌｆ−線、メ峰すを交互に切ｐ換えて
用−ることによル原梢１４０１！み取ルとメモリからの
読み出しを同時に行なうとともで龜る。First, if the buffer memory has a number of lines for one image center t, by alternately switching between the lf line and the line line, the line 1401 can be used. It slows down when reading data and reading from memory at the same time.

以上のように構成すれば、第５図で説明したような複数
個Ｏ分担結像光学系３・４に基因する情報の一部メブ華
醜取シ０問題、第４図で説明しえような−５ａｉｃｅ抜
け（Ｃ部分）の問題、その他倉成再成ｊｌｉ像の画像ず
れ、歪み等ｏｎみ取シ誤羞を生じ得なｉもので、所期の
目的がよ〈達成される。With the above configuration, the problem of removing part of the information due to the multiple O-sharing imaging optical systems 3 and 4 as explained in FIG. 5 can be solved as shown in FIG. The intended purpose can be achieved by eliminating problems such as -5 aice omission (part C), and other problems that can cause errors in reading, such as image shifts and distortions of the Kuranari reconstructed JLI image.

尚１以上光路二分割の例をａ明したが、それ以上の分割
構成にもできること紘勿論である。Although an example in which the optical path is divided into two or more parts has been described above, it is of course possible to use a configuration in which the optical path is divided into more than one part.

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

第１図は複数個の一次兄イメージセンナを用−て情報を
分ａｕｔＩＩＬｎする例の略図、第２図はそＯ鯛御回路
例の図、第３図は情報〇一部タプル貌読取Ｏなされてｉ
る例Ｏ略図、第４ｖＡ拡憤報の一部１１！＊）抜けを生
じて−る例Ｏ略図、第５図拡本発明の一実施例の構成を
示す略図。 １は原稿（オリジナル）、２は原稿載置台、３・４・７
抹緒像光学系、ＣＣＤ１φ２は第１及び第２の一次元イ
メージ七ンｔ０ 特許出願人　　　　キャノン株式会社Fig. 1 is a schematic diagram of an example of dividing information using multiple primary image sensors, Fig. 2 is a diagram of an example of the control circuit, and Fig. 3 is a diagram of an example of autIILn that uses a plurality of primary image sensors. Tei
Example O Schematic diagram, part 11 of the 4th vA public announcement! *) Schematic diagram of example O in which omission occurs; FIG. 5 is an enlarged schematic diagram showing the configuration of an embodiment of the present invention. 1 is the original (original), 2 is the original table, 3, 4, 7
Image optical system, CCD1φ2 is the first and second one-dimensional image t0 Patent applicant: Canon Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] （１）複数個の一次元イメージセｙｔを用−９それ等Ｏ
センナによ〕原稿情報０主走査方向に沿う情報を領域分
担畜せて分割読取）畜せる方式０画像読取り装置に於て
。 各−次元イメージセンナに対する結像光学系を共通−り
の系にし、その結像光学系の光真射曙０光路に光踏分ａ
ｍ面を配設して出射光を分割化し。 そｏ６分割光を各分担−次元イメージ竜ンｆｅｌｔ績條
入射嘔せる。 ように４１１成したことを４Ｉ黴とする画像貌堆）装置
。(1) Use multiple one-dimensional images
In an image reading device that can store document information (information along the main scanning direction) into different areas and read them separately. The imaging optical system for each -dimensional image sensor is a common system, and the optical path of the imaging optical system is
The m-plane is arranged to split the emitted light. Then, the light is divided into 6 parts, each of which is divided into two dimensions. A device for producing images of 411 molds as 4I mold. （２）−次元イメージセンナがＣＣＤであることを特徴
とする。ｌ！！＃許請求ｏｓｔｍ第１項記載のｉｌ像絖
取）装置。(2) The -dimensional image sensor is a CCD. l! ! #The apparatus for removing an il image according to item 1 of the patent application.