JPS6315566A - Picture reader - Google Patents
Picture readerInfo
- Publication number
- JPS6315566A JPS6315566A JP61160155A JP16015586A JPS6315566A JP S6315566 A JPS6315566 A JP S6315566A JP 61160155 A JP61160155 A JP 61160155A JP 16015586 A JP16015586 A JP 16015586A JP S6315566 A JPS6315566 A JP S6315566A
- Authority
- JP
- Japan
- Prior art keywords
- original
- document
- reading
- image
- zone
- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 239000013307 optical fiber Substances 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
Landscapes
- Facsimiles In General (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は原稿の表裏両面を光学的に読取る画像読取装置
に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an image reading device that optically reads both the front and back sides of a document.
(従来の技術)
従来、この種原稿の表裏両面の画像を自動的に読取る画
像読取装置においては、原稿を原稿供給装置から原稿台
に導いて、−・度読取った原稿を複雑な+!’i路及び
過程を経て裏返しとし、再び原稿台に導いた後、反対面
(裏面)を読取るものである。(Prior Art) Conventionally, in an image reading device that automatically reads images on both the front and back sides of this type of document, the document is guided from the document supply device to the document table, and the document that has been read by −.degree. The document is turned over after going through the i-path and process, and then guided to the document table again, and then the opposite side (back side) is read.
(発明が解決しよう。する問題点)
しかし、斯かる従来例の場合には、原稿を裏返ししなけ
ればならないため、その裏返し動作に時間がかかり、高
速な読取動作ができないばかりでなく、複雑な動作の過
程で原稿を損傷させたり、原稿ジャムを引きおこすとい
う問題点があった。(Problems to be solved by the invention) However, in the case of such a conventional example, since the document must be turned over, the turning operation takes time, and not only is it impossible to perform a high-speed reading operation, but also a complicated reading operation is required. There are problems in that the document may be damaged or jammed in the process of operation.
そこで、本発明は従来例の上記した問題点を解決するた
めになされたもので、その目的とするところは、原稿を
裏返すことなく一方向への移送だけで、原稿の両面の画
像を高速、珪っ渋滞することなく読取可能な画像読取装
置を提供することにある。Therefore, the present invention has been made to solve the above-mentioned problems of the conventional example, and its purpose is to transfer images on both sides of a document at high speed by simply transporting the document in one direction without turning it over. An object of the present invention is to provide an image reading device capable of reading images without causing congestion.
(問題点を解決するための手段)
L記の目的を達成するために、本発明にあっては、原稿
を一方向に移送する移送手段と、該移送f段により前記
原稿を移送させ原稿台上の第1位置で前記原稿の第1の
面の画像を順次読取る読取手段と、前記原稿を移送させ
前記原稿台りの第2位置で前記原稿の第2の面の画像を
前記読取手段にて読取るために前記第2位置から前記第
1位置に前記第2の面の画像を導びく光学系とを備えた
ことにより構成されている。(Means for Solving the Problems) In order to achieve the object L, the present invention includes a transport means for transporting the original in one direction, and a transport means for transporting the original by the transport stage a reading means for sequentially reading images of a first side of the original at a first position on the upper side; and a reading means for transporting the original and reading an image of a second side of the original at a second position of the original table. and an optical system that guides the image of the second surface from the second position to the first position for reading.
(作 用)
L記の構成を有する本発明においては、移送手段によっ
て原稿を一方向に移送し、この原稿を原稿台上の第1位
置に移送させることにより、読取手段で原稿の第1の面
の画像を読取り、次いで移送手段によって原稿を第2位
置に移送し、この原稿の第2の面の画像を光学系にて第
1位置に導びき、L記読取f段で読取るようにし、一方
向への移送だけで両面の画像を読取ることができるよう
にしたものである。(Function) In the present invention having the configuration described in L, the document is transferred in one direction by the transfer means, and the document is transferred to the first position on the document table, so that the reading device reads the first portion of the document. The image on the surface is read, and then the document is transported to a second position by the transport means, the image on the second surface of the document is guided to the first position by the optical system, and is read at the L reading stage f, This allows images on both sides to be read simply by moving in one direction.
(実施例)
以Fに本発明を図示の実施例に基づいて説明する。第1
図は本発明に係る画像読取装置の第1実施例を示す概略
構成図であり、同図において、lOは光の透過可能な原
稿台で、この原稿台10■二には原稿20が供給される
。原稿20は原稿台101−に所定間隔をおいて複数配
設された移送手段としてのローラ11に導びかれて矢印
X方向に移送される。12は原稿台lOの下方に設けら
れた光源で、該光源12は第1位置としてのA位置を原
稿台lOの下方から照射する。そして、A位置に原稿2
0の先端部が位置すると、A位置で照射された原稿20
の画像は原稿台10の下方に配設されたミラー13,1
4.15を経て結像レンズ16により、CCD (電荷
結合よ7−)′:gの感光素r−又は感光体ドラム等の
読取手段としての読取部材17に結像し、読取られる。(Example) Hereinafter, the present invention will be explained based on the illustrated example. 1st
The figure is a schematic configuration diagram showing a first embodiment of an image reading device according to the present invention. In the figure, 1O is a document table through which light can pass, and a document 20 is supplied to this document table 10. Ru. The original 20 is guided by a plurality of rollers 11, which serve as transport means, arranged on the original table 101- at predetermined intervals, and is transported in the direction of arrow X. Reference numeral 12 denotes a light source provided below the document table 1O, and the light source 12 illuminates the first position A from below the document table 10. Then, place document 2 in position A.
When the leading edge of 0 is located, the document 20 irradiated at position A
The image is taken from mirrors 13 and 1 disposed below the document table 10.
4.15, an image is formed by the imaging lens 16 on a reading member 17 as a reading means such as a photosensitive element r- of a CCD (charge coupling 7-)':g or a photosensitive drum, and the image is read.
ここで、同実施例の原稿読取系を第3図(d)。Here, the document reading system of the same embodiment is shown in FIG. 3(d).
(b)に基づいて説明するに、同図(a)に示すような
ローラ11により原稿台101の原稿20を矢印X方向
に移送する。第1図に示すように、原稿台10Fに帯状
のA位置を設定し、原稿20がA位置を通過する際に、
同図(b)に示すようにA位置りの原稿20の画像を順
次結像レンズ16を経て読取部材17に結像させて、原
稿21の第1の面である原稿台lO側の面の画像を読取
る。尚、第3図においては、A位置から結像レンズ16
までの間に光路を変更するミラー(m1図示)を省略し
ている。To explain based on (b), the original 20 on the original platen 101 is transported in the direction of arrow X by the roller 11 as shown in (a) of the same figure. As shown in FIG. 1, a belt-shaped A position is set on the document table 10F, and when the document 20 passes through the A position,
As shown in FIG. 2(b), images of the original 20 at position A are sequentially focused on the reading member 17 via the imaging lens 16, and the first surface of the original 21, which is the surface on the original table lO side, is imaged. Read the image. In addition, in FIG. 3, the imaging lens 16 is
A mirror (illustrated in m1) that changes the optical path between these steps is omitted.
また、画像がA位置から結像レンズ16に至るまでの距
離をDとすると、距@D=a+b+c+dで表わすこと
ができる。第1図において、aはミラー15から結像レ
ンズ16までの距離、bはミラー14からミラー15ま
での距離、cはミラー13からミラー14までの距離、
dはA位置からミラー13までの距離、eはミラー22
がらA位1°6までの距離である。−・方、原稿2oの
移送距離がfであるとすると、A位置での原稿2oの読
取りが終rした時、原稿2oの先端部はA位置から移動
方向に距fif離れた第2位置としてのB位置にある。Further, if the distance from the position A to the imaging lens 16 is D, it can be expressed as distance@D=a+b+c+d. In FIG. 1, a is the distance from the mirror 15 to the imaging lens 16, b is the distance from the mirror 14 to the mirror 15, c is the distance from the mirror 13 to the mirror 14,
d is the distance from the A position to the mirror 13, e is the distance from the mirror 22
The distance is from A to 1°6. - On the other hand, if the transport distance of the original 2o is f, then when the reading of the original 2o at the A position is completed r, the leading edge of the original 2o is moved to a second position a distance fif away from the A position in the moving direction. It is at position B.
そして、18はB位置にある原稿20を−L方から照射
する光源であり、B位置において照射された原稿20の
画像は、原稿2oの下方に配設された光学系であるミラ
ー21.22によりA位置へと導びかれ、上記と同様の
経路にて第2の面の画像である原稿台10と反対側の面
の画像が結像レンズ16に導びかれ、読取部材17に結
像される。ここで、光源12.18の明るさの比は同−
m−の原稿に対して同じ画像が読取部材17に入力する
よう予め調整しである。また結像レンズ16と読取部材
17の位置が不変であるとすると、画像がB位置から結
像レンズ16に至るまでの距#D′を距fiDと等しく
しなければ、読取部材17Fに1確に結像されない。Reference numeral 18 denotes a light source that irradiates the original 20 at the B position from the −L direction, and the image of the original 20 irradiated at the B position is captured by mirrors 21 and 22, which are optical systems disposed below the original 2o. The image of the second surface, which is the image of the surface opposite to the document table 10, is guided to the imaging lens 16 through the same path as above, and is imaged on the reading member 17. be done. Here, the brightness ratio of the light sources 12 and 18 is the same -
Adjustment is made in advance so that the same image is input to the reading member 17 for the m- original. Further, assuming that the positions of the imaging lens 16 and the reading member 17 remain unchanged, unless the distance #D' from the image position B to the imaging lens 16 is made equal to the distance fiD, the reading member 17F must be is not imaged.
そこで、原稿20の読取りがA位置からB位置に移行す
ると同時に、B位置から結像レンズ16・に至る画像の
ルートを補正して距f2ID’=Dとする。これは1例
えば、CPU、ROM、RAMにより構成される制御装
置により原稿2oをi3:(稿台lOに供給してから、
原稿20をB位置に移送するまでの時間を原稿20の移
送速度と移送距離から算出し、また読取動作中において
原稿20を原稿台10に供給してからの時間を計測し、
原稿20がB位置に達する時刻にサーボモータ(図示せ
ず)を動作させ、該サーボモータの動力をワイヤでミラ
ー14.15に伝達し、該ミラー14.15を第1因に
示す14’ 、15’位置に距ax (D ′=a+b
+c+d+e+f+g−2x 、x=−’−ム週LL)
移動させる。また、これ以外には、rめ14′、15’
位置の近傍に配設したミラー14.15と別のミラーを
上記の時刻に14’、15′位置に上記と同様の方式に
より移動させるようにしてもよい。Therefore, at the same time that the reading of the original 20 moves from the A position to the B position, the route of the image from the B position to the imaging lens 16 is corrected so that the distance f2ID'=D. This is 1. For example, a control device composed of a CPU, ROM, and RAM supplies the document 2o to the manuscript table 10, and then
The time required to transport the original 20 to position B is calculated from the transport speed and the transport distance of the original 20, and the time after the original 20 is fed to the original platen 10 during the reading operation is measured.
A servo motor (not shown) is operated at the time when the document 20 reaches position B, and the power of the servo motor is transmitted to the mirror 14.15 by a wire, and the mirror 14.15 is shown as the first factor 14', At the 15' position, the distance ax (D'=a+b
+c+d+e+f+g-2x, x=-'-mu week LL)
move it. In addition, other than this, rme 14', 15'
Mirrors 14, 15 and other mirrors disposed near the position may be moved to positions 14' and 15' at the above-mentioned times in a manner similar to that described above.
上記の構成において、原稿の両面画像の読取り動作を第
2図(a)、(b)に基づいて説明する。同図(a)は
A位置において原稿20の原稿台10側の面の画像を読
取っている状態を示し、同図(b)はA位置での読取り
を終了し、B位置において原稿20の原稿台lOと反対
側の面を読取り始める状jEを示している。したがって
、同図(b)に示すように、ミラー21.22間の距#
fを原稿20の移送方向の長さと等しくすることにより
、原稿20の・面の読取終r後、直ちに他面を読取るこ
とができる。In the above configuration, the operation of reading images on both sides of a document will be described with reference to FIGS. 2(a) and 2(b). Figure 2 (a) shows a state in which the image of the surface of the original document 20 on the document table 10 side is being read at position A, and Figure 2 (b) shows the state in which the image of the original 20 on the side of the original platen 10 is read at position A, and the image of the original 20 is read at position B. It shows a state jE in which reading begins on the side opposite to the table lO. Therefore, as shown in FIG. 2(b), the distance # between mirrors 21 and 22 is
By making f equal to the length of the original 20 in the transport direction, after reading one side of the original 20 r, the other side can be read immediately.
ここで、距#ifは可変にしてもよく、例えば読取動作
前に操作者によって行なわれる原稿長指定操作等からC
PU、ROM、RAM等から構成される装置
原稿長に基づきサーボモータを一定時間,一定速度で動
作させ,サーボモータの動力をワイヤー等でミラー2l
に伝達して,ミラー2lを一定距離移動させることによ
り,距離fを等しくする動作が可能である.尚,距:a
fを原稿20の長ざより長くしても原稿20の両面の画
像を読取る機能に関して支障がない.また、上記実施例
において。Here, the distance #if may be made variable; for example, the distance #if may be changed from
The device consists of PU, ROM, RAM, etc. The servo motor is operated at a constant speed for a certain period of time based on the document length, and the power of the servo motor is transferred to the mirror 2L using a wire, etc.
It is possible to equalize the distance f by transmitting the signal to the mirror 2l and moving the mirror 2l a certain distance. Furthermore, distance: a
Even if f is made longer than the length of the original 20, there is no problem with the function of reading images on both sides of the original 20. Also, in the above embodiments.
原稿20の移送方向が逆であっても同様の構成により、
同様の作用をなす。Even if the direction of transport of the document 20 is reversed, the same structure allows
It has a similar effect.
次に、本発明に係る画像読取装置を複写機に適用した例
を第4図(a)〜(c)に基づいて説1]する。同図(
a)に示すよラに,A4サイズの原稿40が入位置に達
してからB位置に達するまでの時間をtL.JIX稿4
0が8位2に達してから、B位置を通過し終わるまでの
時間をtiとすると、同図(b)に示すような時間1+
,1工の1順に形成される1枚の画像を得ることができ
る.この画像を複写機内の感光体ドラムに露光させて,
電r写真プロセスを経て印刷することにより、サイズが
A3サイズの原稿の2倍のA2サイズの記録紙を使用し
て原稿の両面を見開きにした画像を記録印刷することが
可11である。Next, an example in which the image reading device according to the present invention is applied to a copying machine will be explained based on FIGS. 4(a) to 4(c). Same figure (
As shown in a), the time from when the A4 size document 40 reaches the input position until it reaches the B position is tL. JIX draft 4
If the time from when 0 reaches 8th place 2 until it finishes passing through position B is ti, then the time 1+ as shown in the same figure (b)
, one image formed in one order of one construction can be obtained. This image is exposed to the photoreceptor drum inside the copying machine,
By printing through an electrophotographic process, it is possible to record and print images of double-sided spreads of a document using A2 size recording paper, which is twice the size of an A3 size document.
また、第5図(a)は本発明に係る画像読取装置の第2
実施例を示す要部概略図であり、この実施例では光学系
として光ファイバ50を複数並設し、該光ファイバ50
の端部を各々A位置とB位置に設け,B位置の画像をA
位置に導びくことかできるようにしてある.即ち、同図
(a)に示すように原稿e; 5 1 、hを原稿52
が移送し,A位置とB位置を通過すると、上記第1実施
例の如くミラーを光学系として使用したことと同様に原
稿52の両面が順次A位置に導びかれる.したがって、
光学系に光ファイバ50を使用することにより、ミラー
の,装置を不要とし,また画像の伝達路も柔軟に決定す
ることが可能となり,延いては装置を小型化することが
できる。Further, FIG. 5(a) shows the second image reading device according to the present invention.
FIG. 2 is a schematic diagram of main parts showing an embodiment, in which a plurality of optical fibers 50 are arranged in parallel as an optical system, and the optical fibers 50
The ends of the images are placed at positions A and B, respectively, and the image at position B is
It is designed so that it can be guided to a certain position. That is, as shown in FIG. 5(a), the original e;
When the document 52 is transported and passes through the A position and the B position, both sides of the original 52 are sequentially guided to the A position similarly to the case where a mirror is used as an optical system as in the first embodiment. therefore,
By using the optical fiber 50 in the optical system, it is possible to eliminate the need for a mirror device, and also to flexibly determine the image transmission path, thereby making it possible to downsize the device.
(発明の効果)
未発IJIに係る画像読取装置は以Eの構成及び作用か
らなるもので、一度読取った原稿を裏返すことなく、一
方向への移送だけで原稿の両面の画像を読取ることがで
きる.これにより、原稿を裏返す過程及び機構を不要と
し、原稿の移送経路を短かくでき,したがって、高速比
つ渋滞することなく画像の読取りが可能であると共に,
原稿を損傷させたりジャムの発生を確実に防lトできる
という効果を奏する。(Effects of the Invention) The image reading device related to unissued IJI has the configuration and operation described below, and can read images on both sides of a document by simply transporting it in one direction without turning over the document once read. can. This eliminates the need for a process and mechanism for turning over the original, shortens the transport path for the original, and allows images to be read without congesting traffic than at high speeds.
This has the effect of reliably preventing damage to the original and occurrence of a jam.
第1図は未発IJIに係る画像読取装置の第1実施例を
示す概略構成図、第2図(a) 、 (b)は同実施例
において原稿の読取動作を示す概略図、第3図(a)
、 (b)は各々同実施例における原稿読取系を示す概
略斜視図、説II図、第4図(a)、(b)、(c)は
各々本発明を複写機に適用した例を示す説明図、第5図
(a) 、(b) 、(C)は未発IIに係る画像読取
装置の第2実施例を示し、同IΔ(a)は要部概略図、
同図(b)は概略斜視図、同図(c)は光ファイバの断
面図である。
符 号 の 説 明
lO・・・原稿台
11・・・・−ラ(移送r段)
医12.18・・・光源 16・・・結像手段
−17・・・読取部材(読取手段)派
20・・・原稿
21.22・・・ミラー(光学系)
50・・・光ファイバ(光学系)
特許出即人 キャノン株式会社 ゛・代理人 弁理上
助 良 和 信 −7代理人 弁理上
奥 1) 規 之 7′−ヘ゛、第2図
第3図
(a)
(b)
第4図
1. 1゜
第5図FIG. 1 is a schematic configuration diagram showing a first embodiment of an image reading device related to unissued IJI, FIGS. 2(a) and (b) are schematic diagrams showing a document reading operation in the same embodiment, and FIG. 3 (a)
, (b) is a schematic perspective view showing the original reading system in the same embodiment, Figure II, and Figures 4 (a), (b), and (c) each show an example in which the present invention is applied to a copying machine. Explanatory drawings, FIGS. 5(a), 5(b), and 5(C) show a second embodiment of the image reading device related to Unreleased II, and IΔ(a) is a schematic diagram of the main part,
FIG. 5B is a schematic perspective view, and FIG. 1C is a cross-sectional view of the optical fiber. Explanation of symbols 1O...Original table 11...-R (transfer stage R)
Medical doctor 12.18...Light source 16...Imaging means
-17...Reading member (reading means) 20...Manuscript 21.22...Mirror (optical system) 50...Optical fiber (optical system) Patent issued by Canon Co., Ltd. Agent Patent attorney Yoshikazu Kamisuke -7 Agent Patent attorney
Back 1) Rules 7'-He, Figure 2, Figure 3 (a) (b) Figure 4, 1. 1゜Figure 5
Claims (3)
により前記原稿を移送させ原稿台上の第1位置で前記原
稿の第1の面の画像を順次読取る読取手段と、前記原稿
を移送させ前記原稿台上の第2位置で前記原稿の第2の
面の画像を前記読取手段にて読取るために前記第2位置
から前記第1位置に前記第2の面の画像を導びく光学系
とを備えたことを特徴とする画像読取装置。(1) A transport means for transporting the original in one direction; a reading means for transporting the original by the transport means and sequentially reading images on the first side of the original at a first position on the original table; an optical system for guiding an image of the second surface of the document from the second position to the first position in order to read the image of the second surface of the document by the reading means at a second position on the document table; An image reading device comprising a system.
とする特許請求の範囲第1項記載の画像読取装置。(2) The image reading device according to claim 1, wherein the optical system includes a plurality of mirrors.
第1項記載の画像読取装置。(3) The image reading device according to claim 1, wherein the optical system is an optical fiber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61160155A JPS6315566A (en) | 1986-07-08 | 1986-07-08 | Picture reader |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61160155A JPS6315566A (en) | 1986-07-08 | 1986-07-08 | Picture reader |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6315566A true JPS6315566A (en) | 1988-01-22 |
Family
ID=15709062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61160155A Pending JPS6315566A (en) | 1986-07-08 | 1986-07-08 | Picture reader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6315566A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2789782A1 (en) * | 1999-02-16 | 2000-08-18 | Sagem | DEVICE FOR OPTICALLY READING INFORMATION CARRIED ON A MEDIUM SUCH AS A GAME TICKET |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5817768A (en) * | 1981-07-24 | 1983-02-02 | Fuji Xerox Co Ltd | Picture reading device |
-
1986
- 1986-07-08 JP JP61160155A patent/JPS6315566A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5817768A (en) * | 1981-07-24 | 1983-02-02 | Fuji Xerox Co Ltd | Picture reading device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2789782A1 (en) * | 1999-02-16 | 2000-08-18 | Sagem | DEVICE FOR OPTICALLY READING INFORMATION CARRIED ON A MEDIUM SUCH AS A GAME TICKET |
EP1030261A1 (en) * | 1999-02-16 | 2000-08-23 | Sagem Sa | Optical reading device for information carried by a support such as a game ticket |
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