JPH0568147A - Original reader - Google Patents

Original reader

Info

Publication number
JPH0568147A
JPH0568147A JP3229067A JP22906791A JPH0568147A JP H0568147 A JPH0568147 A JP H0568147A JP 3229067 A JP3229067 A JP 3229067A JP 22906791 A JP22906791 A JP 22906791A JP H0568147 A JPH0568147 A JP H0568147A
Authority
JP
Japan
Prior art keywords
document
polarizing plate
original
light
platen
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
JP3229067A
Other languages
Japanese (ja)
Inventor
Tokio Nakajima
時男 中島
Original Assignee
Mitsubishi Electric Corp
三菱電機株式会社
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 Mitsubishi Electric Corp, 三菱電機株式会社 filed Critical Mitsubishi Electric Corp
Priority to JP3229067A priority Critical patent/JPH0568147A/en
Publication of JPH0568147A publication Critical patent/JPH0568147A/en
Application status is Pending legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00795Reading arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04Scanning arrangements
    • H04N2201/0402Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/043Viewing the scanned area

Abstract

PURPOSE:To easily align an original and to prevent the rereading of the original due to its positional deviation. CONSTITUTION:The 1st polarizing plate 12 is fixed to an original pressure plate and the 2nd polarizing plate 16 whose polarizing direction is shifted by 90 deg. from that of the 1st polarizing plate 12 is arranged in the route of reflected light from the original 11. Consequently the position of the original 11 can be checked in the closed state of the original pressure plate without receiving external light by an image sensor 14.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】この発明は、例えばイメージスキャナなど、イメージセンサを用いて原稿の画像を読み取る原稿読取装置に関するものである。 BACKGROUND OF THE INVENTION This invention, for example, an image scanner, etc., to a document reading apparatus for reading an image of a document using an image sensor.

【0002】 [0002]

【従来の技術】図2は従来のイメージスキャナの一例を示す概略の斜視図である。 BACKGROUND OF THE INVENTION FIG 2 is a perspective view schematically showing an example of a conventional image scanner. 図において、1はスキャナ本体、2はスキャナ本体1の上部に設けられ、原稿(図示せず)が載せられるガラス製の透明な原稿台、3はスキャナ本体1内に往復動可能に設けられ、原稿の画像を読み取る読取ユニット、4はスキャナ本体1に開閉自在に取り付けられている原稿押さえ板であり、この原稿押さえ板4は、不透明な材料からなっている。 In the figure, the scanner main body 1, 2 is provided in an upper portion of the scanner main body 1, a document (not shown) made of glass transparent platen to be loaded, 3 reciprocally mounted in the scanner main body 1, reading unit reads an image of the original 4 is a document pressing plate attached openably to the scanner device 1, the document pressing plate 4 is made of an opaque material.

【0003】上記のような従来のイメージスキャナでは、原稿読取中にスキャナ本体1内に外来光が侵入すると、この外来光がノイズとなり読取が困難となるため、 [0003] In the conventional image scanner as described above, the external light from entering the scanner body 1 in the read original, since the reading will the foreign light and noise becomes difficult,
不透明な原稿押さえ板4を用いて外来光を遮断する。 Blocking the external light using an opaque original pressing plate 4.

【0004】 [0004]

【発明が解決しようとする課題】上記のように構成された従来のイメージスキャナにおいては、原稿押さえ板4 In the conventional image scanner constructed as above [SUMMARY OF THE INVENTION], the document pressing plate 4
が不透明であるため、原稿押さえ板4を閉じた状態では原稿の位置を確認することができず、原稿押さえ板4を閉じる際に原稿がずれた場合などには、そのままの位置で原稿の読取が行われてしまい、位置合わせをした後に再度読取を行う必要があるという問題点があった。 Because it is opaque, it is impossible to confirm the position of the document in a closed state of the document pressing plate 4, the like when the original is displaced when closing the document pressing plate 4, the reading of the document in situ would have been conducted, there is a problem that it is necessary to perform reading again after the alignment.

【0005】この発明は、上記のような問題点を解決することを課題としてなされたものであり、原稿押さえ板を閉じた状態で原稿の位置を確認することができる原稿読取装置を得ることを目的とする。 [0005] The present invention has been made as a problem to solve the problems described above, to obtain a document reading apparatus capable of confirming the position of the document is closed the document pressing plate for the purpose.

【0006】 [0006]

【課題を解決するための手段】この発明に係る原稿読取装置は、原稿押さえ板に第1の偏光板を設け、原稿からの反射光の経路に、第1の偏光板に対して偏光方向が9 Means for Solving the Problems The document reading apparatus according to the present invention, the first polarizing plate is provided on the document pressing plate, in the path of the reflected light from the original polarization direction with respect to the first polarizer 9
0°ずらされた第2の偏光板を設けたものである。 0 ° staggered is provided with a second polarizing plate.

【0007】 [0007]

【作用】この発明においては、第2の偏光板が、第1の偏光板を透過した外来光を遮断し、原稿からの反射光のみを透過させ、イメージセンサに到達せさる。 [Action] In this invention, the second polarizing plate, to block the external light transmitted through the first polarizing plate, transmits only reflected light from the document, monkey reach the image sensor.

【0008】 [0008]

【実施例】以下、この発明の実施例を図について説明する。 EXAMPLES A description is given of a preferred embodiment of the present invention. 図1はこの発明の一実施例によるイメージスキャナの要部構成図であり、図2と同一又は相当部分には同一符号を付し、その説明を省略する。 Figure 1 shows the configuration of principal portions of an image scanner according to an embodiment of the present invention, the same reference numerals are given to the same or corresponding parts in FIG. 2, the description thereof is omitted. 図において、11は原稿台2上に載せられている原稿、12は原稿押さえ板に設けられ、原稿台2に接離自在になっている第1の偏光板(0°)である。 In the figure, the document 11 is being placed on the document table 2, 12 provided in the document pressing plate, a first polarizing plate has a freely separable on the document table 2 (0 °).

【0009】13は原稿台2の下面に対向しており、原稿 [0009] 13 is opposed to the lower surface of the document table 2, the document
11に光を照射する光源、14は原稿台2の下面に対向しており、原稿11からの反射光を受光するイメージセンサ、 Light source for irradiating light to the 11, 14 is opposed to the lower surface of the document table 2, an image sensor for receiving the reflected light from the document 11,
15は反射光の経路に設けられている集束レンズ、16は反射光の経路に設けられている偏光フィルタ、即ち第2の偏光板(90°)であり、この第2の偏光板16は、第1 15 a focusing lens provided in the path of the reflected light, 16 is a polarizing filter is provided in the path of the reflected light, i.e., a second polarizing plate (90 °), the second polarizing plate 16, first
の偏光板12に対して偏光方向が90°ずらされている。 Polarization direction is shifted 90 ° relative to the polarizer 12.
17は光源13,イメージセンサ14,集束レンズ15及び第2 17 light source 13, the image sensor 14, focusing lens 15 and a second
の偏光板16を有し、図の左右方向に往復動可能な読取ユニットである。 It has a polarizer 16, a reciprocable reading unit in the horizontal direction in FIG.

【0010】上記のように構成されたイメージスキャナにおいては、光源13から照射された光が原稿11で反射され、その反射光が集束レンズ15及び第2の偏光板16を透過してイメージセンサ14に受光され、原稿11の画像が読み取られる。 [0010] In the image scanner configured as above, light emitted from the light source 13 is reflected by the document 11, the image sensor 14 and the reflected light is transmitted through the focusing lens 15 and the second polarizing plate 16 is received, the image of the document 11 is read. このとき、原稿11は、原稿押さえ板により原稿台2上に押さえ付けられている。 At this time, the document 11 is pressed onto the platen 2 by the document pressing plate.

【0011】このようなイメージスキャナでは、原稿押さえ板に第1の偏光板12が用いられているので、原稿押さえ板を閉じた状態でも原稿11の位置を見ることができる。 [0011] In such an image scanner, since the first polarizing plate 12 is used for the document pressing plate, it can be seen the position of the original 11 in the closed state of the document pressing plate. 従って、原稿11の位置合わせを確実に行うことができ、原稿11の位置ずれによる読取のやり直しなどの手間はかからない。 Therefore, it is possible to align the document 11 reliably, labor such as redoing reading by positional deviation of the original 11 is not applied. また、第1の偏光板12を透過した外来光は、第2の偏光板16で遮断されるので、イメージセンサ Further, external light transmitted through the first polarizing plate 12, due to being blocked by the second polarizing plate 16, an image sensor
14には受光されず、従って外来光がノイズとなることはない。 Not received the 14, thus external light does not become a noise. さらに、光源13から照射され原稿11で反射される光の経路に位置する偏光板は第2の偏光板16のみであるため、原稿11の画像の読取は良好に行える。 Furthermore, since the polarizing plate positioned in the path of the light reflected by the original 11 emitted from the light source 13 is only the second polarizing plate 16, the reading of the image of the document 11 is performed satisfactorily.

【0012】なお、上記実施例では集束レンズ15とイメージセンサ14との間に第2の偏光板16を配置したが、例えば原稿台2に設けるなど、反射光の経路であれば他の位置でもよい。 [0012] Although placing the second polarizing plate 16 between the focusing lens 15 and the image sensor 14 in the above embodiment, for example, provided on the document table 2, also at other locations as long as the path of the reflected light good. また、第1の偏光板12は、原稿押さえ板の全面に設けても一部のみに設けてもよい。 The first polarizing plate 12 may be provided only on a part be provided on the entire surface of the document pressing plate. さらに、透明板の一方の面に偏光板を接合したものを原稿押さえ板として用いてもよい。 Further, it may be used as the document pressing plate obtained by bonding a polarizing plate on one surface of the transparent plate. さらに、上記実施例では原稿読取装置としてイメージスキャナを示したが、例えばコピー機などであってもよい。 Furthermore, this embodiment shows an image scanner as the document reading apparatus, and for example may be a copier.

【0013】 [0013]

【発明の効果】以上説明したように、この発明の原稿読取装置は、原稿押さえ板に第1の偏光板を設け、原稿からの反射光の経路に、第1の偏光板に対して偏光方向が90°ずらされた第2の偏光板を設けたので、外来光をイメージセンサに受光させることなく、原稿押さえ板を閉じた状態で原稿の位置を確認することができ、原稿の位置合わせを容易にすることができ、原稿の位置ずれによる読取のやり直しを防止することができるなどの効果を奏する。 As described above, according to the present invention, the document reading apparatus of the present invention, the first polarizing plate is provided on the document pressing plate, in the path of the reflected light from the original, the polarization direction with respect to the first polarizer because There is provided a second polarizing plate are offset 90 °, without receiving the external light to the image sensor, it is possible to confirm the position of the document is closed the document pressing plate, the alignment of the original it can facilitate an effect, such as rework reading by positional deviation of the document can be prevented.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】この発明の一実施例によるイメージスキャナを示す要部構成図である。 1 is a main configuration diagram showing an image scanner according to an embodiment of the present invention.

【図2】従来のイメージスキャナの一例を示す概略の斜視図である。 2 is a perspective view schematically showing an example of a conventional image scanner.

【符号の説明】 DESCRIPTION OF SYMBOLS

2 原稿台 4 原稿押さえ板 11 原稿 12 第1の偏光板 13 光源 14 イメージセンサ 16 第2の偏光板 2 original table 4 platen cover 11 original 12 first polarizer 13 light source 14 image sensor 16 and the second polarizer

Claims (1)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 一方の面上に原稿が載せられる透明な原稿台と、この原稿台の他方の面に対向しており、前記原稿に光を照射する光源と、前記原稿台の他方の面に対向しており、前記原稿からの反射光を受光するイメージセンサと、第1の偏光板を有し、かつ前記原稿台の一方の面に接離自在に設けられ、前記原稿を前記原稿台上に押さえ付ける原稿押さえ板と、前記反射光の経路に設けられ、かつ前記第1の偏光板に対して偏光方向が90°ずらされており、前記第1の偏光板を透過した光を遮断する第2の偏光板とを備えていることを特徴とする原稿読取装置。 And 1. A transparent document table document is placed on one side, faces the other surface of the platen, a light source for irradiating light to the document, the other side of the platen faces the an image sensor for receiving reflected light from the original, having a first polarizing plate, and separable freely provided on one surface of said platen, said platen the document blocking a document pressing plate is provided in the path of the reflected light, and the and the polarization direction is shifted 90 ° with respect to the first polarizing plate, the light transmitted through the first polarizing plate for pressing the upper document reading apparatus characterized by and a second polarizing plate.
JP3229067A 1991-09-09 1991-09-09 Original reader Pending JPH0568147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3229067A JPH0568147A (en) 1991-09-09 1991-09-09 Original reader

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP3229067A JPH0568147A (en) 1991-09-09 1991-09-09 Original reader
TW81101742A TW256809B (en) 1991-09-09 1992-03-07
KR92016388A KR960008377B1 (en) 1991-09-09 1992-09-08 Manuscript reading apparatus
DE19924230173 DE4230173C2 (en) 1991-09-09 1992-09-09 image scanner
CA 2077860 CA2077860C (en) 1991-09-09 1992-09-09 Image scanner
GB9219061A GB2259371B (en) 1991-09-09 1992-09-09 Image scanner

Publications (1)

Publication Number Publication Date
JPH0568147A true JPH0568147A (en) 1993-03-19

Family

ID=16886220

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3229067A Pending JPH0568147A (en) 1991-09-09 1991-09-09 Original reader

Country Status (6)

Country Link
JP (1) JPH0568147A (en)
KR (1) KR960008377B1 (en)
CA (1) CA2077860C (en)
DE (1) DE4230173C2 (en)
GB (1) GB2259371B (en)
TW (1) TW256809B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5625469A (en) * 1995-06-29 1997-04-29 Agfa Division, Bayer Corp. Apparatus for alignment of material to be scanned in a flat-bed scanner
GB2309087A (en) * 1996-01-10 1997-07-16 Michael Waddingham Photocopiers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63218935A (en) * 1987-03-09 1988-09-12 Toshiba Eng Co Ltd Confirming device for original of copying machine

Also Published As

Publication number Publication date
DE4230173A1 (en) 1993-03-18
CA2077860A1 (en) 1993-03-10
DE4230173C2 (en) 1996-08-01
GB9219061D0 (en) 1992-10-21
TW256809B (en) 1995-09-11
KR960008377B1 (en) 1996-06-26
KR930007196A (en) 1993-04-22
GB2259371A (en) 1993-03-10
CA2077860C (en) 1996-04-30
GB2259371B (en) 1994-12-14

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